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MC100EP196 3.3V ECL Programmable Delay Chip with FTUNE
The MC100EP196 is a programmable delay chip (PDC) designed primarily for clock deskewing and timing adjustment. It provides variable delay of a differential NECL/PECL input transition. It has similar architecture to the EP195 with the added feature of further tuneability in http://onsemi.com delay using the FTUNE pin. The FTUNE input takes an analog voltage from VCC to VEE to fine tune the output delay from 0 to 60 ps. MARKING The delay section consists of a programmable matrix of gates and DIAGRAM* multiplexers as shown in the logic diagram, Figure 2. The delay increment of the EP196 has a digitally selectable resolution of about 10 ps and a net range of up to 10.2 ns. The required delay is selected by the 10 data select MC100 inputs D[9:0] values and controlled by the LEN (pin 10). A LOW level on EP196 LEN allows a transparent LOAD mode of real time delay values by AWLYYWWG LQFP-32 D[9:0]. A LOW to HIGH transition on LEN will LOCK and HOLD FA SUFFIX 32 current values present against any subsequent changes in D[10:0]. The CASE 873A approximate delay values for varying tap numbers correlating to D0 (LSB) 1 through D9 (MSB) are shown in Table 5. Because the EP196 is designed using a chain of multiplexers, it has a fixed minimum delay of 2.4 ns. An additional pin, D10, is provided for A = Assembly Location WL = Wafer Lot controlling Pins 14 and 15, CASCADE and CASCADE, also latched YY = Year by LEN, in cascading multiple PDCs for increased programmable WW = Work Week range. The cascade logic allows full control of multiple PDCs. G = Pb-Free Package Switching devices from all "1" states on D[0:9] with SETMAX LOW to all "0" states on D[0:9] with SETMAX HIGH will increase the *For additional marking information, refer to Application Note AND8002/D. delay equivalent to "D0", the minimum increment. Select input pins, D[10:0], may be threshold controlled by combinations of interconnects between VEF (pin 7) and VCF (pin 8) for LVCMOS, ECL, or LVTTL level signals. LVTTL and LVCMOS ORDERING INFORMATION operation is available in PECL mode only. For LVCMOS input levels, See detailed ordering and shipping information in the package dimensions section on page 17 of this data sheet. leave VCF and VEF open. For ECL operation, short VCF and VEF (pins 7 and 8). For LVTTL level operation, connect a 1.5 V supply reference to VCF and leave open VEF pin. The 1.5 V reference voltage to VCF pin can be accomplished by placing a 2.2 kW resistor between *For additional information on our Pb-Free strategy VCF and VEE for 3.3 V power supply. and soldering details, please download the The VBB pin, an internally generated voltage supply, is available to ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. this device only. For single-ended input conditions, the unused differential input is connected to VBB as a switching reference voltage. VBB may also rebias AC coupled inputs. When used, decouple VBB and VCC via a 0.01 mF capacitor and limit current sourcing or sinking to 0.5 mA. When not used, VBB should be left open. The 100 Series contains temperature compensation. * Maximum Frequency > 1.2 GHz Typical * Open Input Default State * Programmable Range: 0 ns to 10 ns * Safety Clamp on Inputs * Delay Range: 2.4 ns to 12.4 ns * A Logic High on the EN Pin Will Force Q to Logic Low * 10 ps Increments * D[10:0] Can Accept Either ECL, LVCMOS, or LVTTL * PECL Mode Operating Range: Inputs VCC = 3.0 V to 3.6 V with VEE = 0 V * VBB Output Reference Voltage * NECL Mode Operating Range: * Pb-Free Packages are Available* VCC = 0 V with VEE = -3.0 V to -3.6 V
(c) Semiconductor Components Industries, LLC,2006
November, 2006 - Rev. 12
1
Publication Order Number: MC100EP196/D
MC100EP196
VEE D0 VCC Q Q VCC VCC FTUNE
24 D1 D2 D3 VEE D4 D5 D6 D7 25 26 27 28 29 30 31 32 1
23
22
21
20
19
18
17 16 15 14 EN CASCADE CASCADE VCC SETMAX SETMIN LEN VEE
MC100EP196
13 12 11 10 9
2
3
4
5
6
7
8
D8
D9 D10 IN
IN VBB VEF VCF
Figure 1. 32-Lead LQFP Pinout (Top View)
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MC100EP196
Table 1. PIN DESCRIPTION
Pin 23, 25, 26, 27, 29, 30, 31, 32, 1, 2 3 4 5 6 7 8 9, 28 13, 18, 19, 22 10 11 12 14 15 16 17 21 20 Name D[0:9] I/O LVCMOS, LVTTL, ECL Input LVCMOS, LVTTL, ECL Input ECL Input ECL Input - - - - - ECL Input ECL Input ECL Input ECL Output ECL Output ECL Input Analog Input ECL Output ECL Output Default State LOW Description Single-ended Parallel Data Inputs [0:9]. Internal 75 kW to VEE. (Note 1) Single-ended CASCADE/CASCADE Control Input. Internal 75 kW to VEE. (Note 1) Noninverted Differential Input. Internal 75 kW to VEE. Inverted Differential Input. Internal 75 kW to VEE and 36.5 kW to VCC. ECL Reference Voltage Output Reference Voltage for ECL Mode Connection LVCMOS, ECL, OR LVTTL Input Mode Select Negative Supply Voltage. All VEE Pins must be Externally Connected to Power Supply to Guarantee Proper Operation. (Note 2) Positive Supply Voltage. All VCC Pins must be externally Connected to Power Supply to Guarantee Proper Operation. (Note 2) Single-ended D pins LOAD / HOLD input. Internal 75 kW to VEE. Single-ended Minimum Delay Set Logic Input. Internal 75 kW to VEE. (Note 1) Single-ended Maximum Delay Set Logic Input. Internal 75 kW to VEE. (Note 1) Inverted Differential Cascade Output for D[10] Input. Typically Terminated with 50 W to VTT = VCC - 2 V. Noninverted Differential Cascade Output for D[10] Input. Typically Terminated with 50 W to VTT = VCC - 2 V. Single-ended Output Enable Pin. Internal 75 kW to VEE. Fine Tuning Input. Noninverted Differential Output. Typically Terminated with 50 W to VTT = VCC - 2 V. Inverted Differential Output. Typically Terminated with 50 W to VTT = VCC - 2 V.
D[10] IN IN VBB VEF VCF VEE VCC LEN SETMIN SETMAX CASCADE CASCADE EN FTUNE Q Q
LOW LOW HIGH - - - - - LOW LOW LOW - - LOW - - -
1. SETMIN will override SETMAX if both are high. SETMAX and SETMIN will override all D[0:10] inputs. 2. All VCC and VEE pins must be externally connected to Power Supply to guarantee proper operation.
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MC100EP196
Table 2. CONTROL PIN
Pin EN State LOW (Note 3) HIGH LEN LOW (Note 3) HIGH SETMIN LOW (Note 3) HIGH SETMAX LOW (Note 3) HIGH D10 LOW HIGH Function Input Signal is Propagated to the Output Output Holds Logic Low State Transparent or LOAD mode for real time delay values present on D[0:10]. LOCK and HOLD mode for delay values on D[0:10]; further changes on D[0:10] are not recognized and do not affect delay. Output Delay set by D[0:10] Set Minimum Output Delay Output Delay set by D[0:10] Set Maximum Output Delay CASCADE Output LOW, CASCADE Output HIGH CASCADE Output LOW, CASCADE Output High
3. Internal pulldown resistor will provide a logic LOW if pin is left unconnected.
Table 3. CONTROL D[0:10] INTERFACE
Pin State VEF Pin (Note 4) No Connect 1.5 V $ 100 mV ECL Mode LVCMOS Mode LVTTL Mode (Note 5) Function
VCF VCF
VCF
4. Short VCF (pin 8) and VEF (pin 7). 5. When Operating in LVTTL Mode, the reference voltage can be provided by connecting an external resistor, RCF (suggested resistor value is 2.2 kW $5%), between VCF and VEE pins.
Table 4. DATA INPUT ALLOWED OPERATING VOLTAGE MODE TABLE
CONTROL DATA SELECT INPUTS PINS (D [0:10]) POWER SUPPLY PECL Mode Operating Range NECL Mode Operating Range LVCMOS YES N/A LVTTL YES N/A LVPECL YES N/A LVNECL N/A YES
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FTUNE 0 512 GD* 1 1 1 1 1 1 1 1 256 GD* 128 GD* 64 GD* 32 GD* 16 GD* 8 GD* 4 GD* 2 GD* 0 0 0 0 0 0 0 0 1 1 GD* 0 1 1 GD* 0 1
IN
Q Q
IN
EN
LEN 10 BIT LATCH
SET MIN
SET MAX D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Figure 2. Logic Diagram
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CASCADE Latch CASCADE D10
MC100EP196
5
VBB
VCF
VEF *GD = (GATE DELAY) APPROXIMATELY 10 ps DELAY PER GATE (FIXED MINIMUM DELAY APPROX. 2.4 ns)
VEE
MC100EP196
Table 5. THEORETICAL DELTA DELAY VALUES
D(9:0) Value XXXXXXXXXX 0000000000 0000000001 0000000010 0000000011 0000000100 0000000101 0000000110 0000000111 0000001000 0000010000 0000100000 0001000000 0010000000 0100000000 1000000000 1111111111 XXXXXXXXXX *Fixed minimum delay not included. SETMIN H L L L L L L L L L L L L L L L L L SETMAX L L L L L L L L L L L L L L L L L H Programmable Delay* 0 ps 0 ps 10 ps 20 ps 30 ps 40 ps 50 ps 60 ps 70 ps 80 ps 160 ps 320 ps 640 ps 1280 ps 2560 ps 5120 ps 10230 ps 10240 ps
Table 6. TYPICAL FTUNE DELAY PIN
Input Range VCC-VEE (V) Output Range 0 - 60 (ps)
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MC100EP196
15000 14000 13000 12000 11000 10000 DELAY ( ps) 9000 8000 7000 6000 5000 4000 3000 2000 1000 0 0 100 200 300 400 500 600 700 800 900 1000 85 C 25 C
-40 C
Decimal Value of Select Inputs (D[9:0])
Figure 3. Measured Delay vs. Select Inputs
Table 7. ATTRIBUTES
Characteristics Internal Input Pulldown Resistor Internal Input Pullup Resistor ESD Protection Human Body Model Machine Model Charged Device Model Pb Pkg Level 2 Value 75 kW N/A > 2 kV > 100 V > 2 kV Pb-Free Pkg Level 2
Moisture Sensitivity, Indefinite Time Out of Drypack (Note 1) LQFP-32 Flammability Rating Oxygen Index: 28 to 34 Transistor Count Meets or exceeds JEDEC Spec EIA/JESD78 IC Latchup Test 1. For additional information, see Application Note AND8003/D.
UL 94 V-0 @ 0.125 in 1237 Devices
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MC100EP196
Table 8. MAXIMUM RATINGS
Symbol VCC VEE VI Iout IBB TA Tstg qJA qJC Tsol Parameter PECL Mode Power Supply NECL Mode Power Supply PECL Mode Input Voltage NECL Mode Input Voltage Output Current VBB Sink/Source Operating Temperature Range Storage Temperature Range Thermal Resistance (Junction-to-Ambient) Thermal Resistance (Junction-to-Case) Wave Solder Pb Pb-Free 0 lfpm 500 lfpm Standard Board LQFP-32 LQFP-32 LQFP-32 Condition 1 VEE = 0 V VCC = 0 V VEE = 0 V VCC = 0 V Continuous Surge VI VCC VI VEE Condition 2 Rating 6 -6 6 -6 50 100 0.5 -40 to +85 -65 to +150 80 55 12 to 17 265 265 Units V V V V mA mA mA C C C/W C/W C/W C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
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MC100EP196
Table 9. DC CHARACTERISTICS, PECL VCC = 3.3 V, VEE = 0 V (Note 2)
-40C Symbol IEE VOH VOL VIH Characteristic Power Supply Current Output HIGH Voltage (Note 3) Output LOW Voltage (Note 3) Input HIGH Voltage (Single-Ended) LVPECL LVCMOS LVTTL Input LOW Voltage (Single-Ended) LVPECL LVCMOS LVTTL Output Voltage Reference LVTTL Mode Input Detect Voltage @ IVCF = 700 mA Reference Voltage for ECL Mode Connection Input HIGH Voltage Common Mode Range (Differential Configuration) (Note 4) Input HIGH Current (PECL) IN, IN, EN, LEN, SETMIN, SETMAX FTUNE Input High Current @ VCC Input LOW Current (PECL) IN, IN, EN, LEN, SETMIN, SETMAX FTUNE Input LOW Current @VEE 50 0.5 -10 0 10 87 Min 100 2155 1355 2075 2000 2000 1355 0 0 1775 1.4 1900 2.0 1875 1.5 1960 Typ 125 2300 1520 Max 160 2405 1605 2420 3300 3300 1675 800 800 1975 1.6 2050 3.3 Min 110 2155 1355 2075 2000 2000 1355 0 0 1775 1.4 1875 2.0 1875 1.5 1953 25C Typ 130 2300 1500 Max 170 2405 1605 2420 3300 3300 1675 800 800 1975 1.6 2050 3.3 Min 110 2155 1355 2075 2000 2000 1355 0 0 1775 1.4 1850 2.0 1875 1.5 1945 85C Typ 135 2300 1485 Max 175 2405 1605 2420 3300 3300 mV 1675 800 800 1975 1.6 2050 3.3 mV V mV V Unit mA mV mV mV
VIL
VBB VCF VEF VIHCMR
IIH IIHH IIL IILL
150 150 50 0.5 -10 0 84
150 150 50 0.5 10 -10 0 82
150 150
mA mA mA
10
mA
NOTE: Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are guaranteed only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. 2. Input and output parameters vary 1:1 with VCC. VEE can vary +0.3 V to -0.3 V. 3. All loading with 50 W to VCC - 2.0 V. 4. VIHCMR min varies 1:1 with VEE, VIHCMR max varies 1:1 with VCC. The VIHCMR range is referenced to the most positive side of the differential input signal.
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MC100EP196
Table 10. DC CHARACTERISTICS, NECL VCC = 0 V, VEE = -3.3 V (Note 5)
-40C Symbol IEE VOH VOL VIH VIL VBB VEF VIHCMR Characteristic Power Supply Current Output HIGH Voltage (Note 6) Output LOW Voltage (Note 6) Input HIGH Voltage (Single-Ended) LVNECL Input LOW Voltage (Single-Ended) LVNECL Output Voltage Reference Reference Voltage for ECL Mode Connection Input HIGH Voltage Common Mode Range (Differential Configuration) (Note 7) Input HIGH Current IN, IN, EN, LEN, SETMIN, SETMAX FTUNE Input High Current @ VCC Input LOW Current IN, IN, EN, LEN, SETMIN, SETMAX FTUNE Input LOW Current @ VEE 50 0.5 -10 0 10 87 Min 100 -1145 -1945 -1225 -1945 -1525 -1400 -1425 -1340 Typ 125 -1000 -1780 Max 160 -895 -1695 -880 -1625 -1325 -1250 0 Min 110 -1145 -1945 -1225 -1945 -1525 -1425 -1425 -1347 25C Typ 130 -1000 -1800 Max 170 -895 -1695 -880 -1625 -1325 -1250 0 Min 110 -1145 -1945 -1225 -1945 -1525 -1450 -1425 -1355 85C Typ 135 -1000 -1815 Max 175 -895 -1695 -880 -1625 -1325 -1250 0 Unit mA mV mV mV mV mV mV V
VEE+2.0
VEE+2.0
VEE+2.0
IIH IIHH IIL IILL
150 150 50 0.5 -10 0 84
150 150 50 0.5 10 -10 0 82
150 150
mA mA mA
10
mA
NOTE: Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are guaranteed only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. 5. Input and output parameters vary 1:1 with VCC. VEE can vary +0.3 V to -0.3 V. 6. All loading with 50 W to VCC - 2.0 V. 7. VIHCMR min varies 1:1 with VEE, VIHCMR max varies 1:1 with VCC. The VIHCMR range is referenced to the most positive side of the differential input signal.
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MC100EP196
Table 11. AC CHARACTERISTICS VCC = 0 V; VEE = -3.0 V to -3.6 V or VCC = 3.0 V to 3.6 V; VEE = 0 V (Note 8)
-40C Symbol fmax tPLH tPHL Characteristic Maximum Frequency Propagation Delay IN to Q; D(0-9) = 0 IN to Q; D(0-9) = 1023 EN to Q; D(0-9) = 0 D10 to CASCADE Programmable Range {D(0-9) = HI} - {D(0-9) = LO} Step Delay (Note 9) D0 High D1 High D2 High D3 High D4 High D5 High D6 High D7 High D8 High D9 High 1810 9500 1780 350 8600 Min Typ 1.2 2210 11496 2277 450 9285 7 23 39 58 137 293 590 1158 2317 4647 9 20 150 100 150 225 450 150 400 300 -10 -130 -105 170 275 -105 70 165 3 150 800 1200 150 150 100 150 200 450 150 400 350 2610 13500 2780 550 10000 1960 10000 1930 380 9200 Max Min 25C Typ 1.2 2360 12258 2430 477 9897 11 30 48 67 149 313 629 1237 2472 4955 10 22 -70 -150 -120 70 305 -120 110 180 3 800 1200 150 150 100 150 200 450 150 400 350 2760 14000 2930 580 10700 2180 10955 2150 420 9900 Max Min 85C Typ 1.2 2580 13454 2650 520 10875 13 32 53 73 154 337 681 1353 2712 5440 11 27 -70 -165 -140 60 325 -140 160 205 3 800 1200 2980 15955 3150 620 12000 Max Unit GHz ps
tRANGE Dt
ps ps
90 245 530 1060 2160 4335
185 335 650 1265 2490 5010
100 260 560 1130 2290 4590
200 370 710 1355 2680 5385
90 270 600 1200 2450 4935
225 410 770 1520 3015 6015 ps ps ps
Mono tSKEW ts
Monotonicity (Note 10) Duty Cycle Skew (Note 11) |tPHL-tPLH| Setup Time D to LEN D to IN (Note 12) EN to IN (Note 13) LEN to D IN to EN (Note 14) EN to IN (Note 15) SET MAX to LEN SET MIN to LEN
th
Hold Time
ps
tR
Release Time
ps
tjit VPP tr tf
Random Clock Jitter @ 1.2 GHz, SETMAX Delay Input Voltage Swing (Differential Configuration) Output Rise/Fall Time 20-80% (Q) 20-80% (CASCADE)
ps mV ps
85 100
110 150
130 200
95 110
120 160
145 210
110 125
135 175
160 225
NOTE: Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are guaranteed only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. 8. Measured using a 750 mV source, 50% duty cycle clock source. All loading with 50 W to VCC - 2.0 V. 9. Specification limits represent the amount of delay added with the assertion of each individual delay control pin. The various combinations of asserted delay control inputs will typically realize D0 resolution steps across the specified programmable range. 10. The monotonicity indicates the increased delay value for each binary count increment on the control inputs D(0-9). 11. Duty cycle skew guaranteed only for differential operation measured from the cross point of the input to the cross point of the output. 12. This setup time defines the amount of time prior to the input signal the delay tap of the device must be set. 13. This setup time is the minimum time that EN must be asserted prior to the next transition of IN/IN to prevent an output response greater than VCC - 1425 mV to that IN/IN transition. 14. This hold time is the minimum time that EN must remain asserted after a negative going IN or positive going IN to prevent an output response greater than VCC - 1425 mV to that IN/IN transition. 15. This release time is the minimum time that EN must be deasserted prior to the next IN/IN transition to ensure an output response that meets the specified IN to Q propagation delay and transition times.
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MC100EP196
IN VINPP = VIH(D) - VIL(D) IN Q VOUTPP = VOH(Q) - VOL(Q) Q tPHL tPLH
Figure 4. AC Reference Measurement
Using the FTUNE Analog Input The analog FTUNE pin on the EP196 device is intended to add more delay in a tunable gate to enhance the 10 ps resolution capabilities of the fully digital EP196. The level of resolution obtained is dependent on the voltage applied to the FTUNE pin. To provide this further level of resolution, the FTUNE pin must be capable of adjusting the additional delay finer than the 10 ps digital resolution (See Logic Diagram). This requirement is easily achieved because a 60 ps additional delay can be obtained over the entire FTUNE voltage range (See Figure 5). This extra analog range ensures that the
90 80 70 60 DELAY (ps) 50 40 30 20 10 0 VCC = 0 V VEE = -3.3 V
FTUNE pin will be capable even under worst case conditions of covering a digital resolution. Typically, the analog input will be driven by an external DAC to provide a digital control with very fine analog output steps. The final resolution of the device will be dependent on the width of the DAC chosen. To determine the voltage range necessary for the FTUNE input, Figure 5 should be used. There are numerous voltage ranges which can be used to cover a given delay range; users are given the flexibility to determine which one best fits their designs.
25C
-40C
85C
-10 -3.3 -2.97 -2.64 -2.31 -1.98 -1.65 -1.32 -0.99 VEE FTUNE VOLTAGE (V)
-0.66 -0.33
0 VCC
Figure 5. Typical EP196 Delay versus FTUNE Voltage
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MC100EP196
Cascading Multiple EP196s To increase the programmable range of the EP196, internal cascade circuitry has been included. This circuitry allows for the cascading of multiple EP196s without the need for any external gating. Furthermore, this capability requires only one more address line per added E196. Obviously, cascading multiple programmable delay chips will result in a larger programmable range; however, this increase is at the expense of a longer minimum delay. Figure 6 illustrates the interconnect scheme for cascading two EP196s. As can be seen, this scheme can easily be
Need if Chip #3 is used
expanded for larger EP196 chains. The D10 input of the EP196 is the cascade control pin and when assert HIGH switches output pin CASCADE to HIGH and pin CASCADE to LOW. With the interconnect scheme of Figure 6 when D10 is asserted, it signals the need for a larger programmable range than is achievable with a single device. The A11 address can be added to generate a cascade output for the next EP196. For a 2-device configuration, A11 is not required.
ADDRESS BUS
A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
D7 D8 D9 D10 IN INPUT IN VBB VEF
D6
D5
D4
VEE
D3
D2
D1 VEE D0
D7 D8 D9 D10 IN IN VBB VEF
D6
D5
D4
VEE
D3
D2
D1 VEE D0
EP196 CHIP #2
VCC Q Q VCC VCC CASCADE CASCADE
EP196 CHIP #1
VCC Q Q VCC VCC CASCADE CASCADE OUTPUT
SETMAX
SETMIN
SETMIN
VCF LEN VEE
FTUNE EN
VCF LEN VEE
SETMAX
FTUNE EN
VCC
VCC
DAC Figure 6. Cascading Interconnect Architecture
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MC100EP196
An expansion of the latch section of the block diagram is pictured in Figure 7. Use of this diagram will simplify the explanation of how the SETMIN and SETMAX circuitry works in cascade. When D10 of chip #1 in Figure 5 is LOW, this device's cascade output will also be LOW while the CASCADE output will be HIGH. In this condition, the SETMIN pin of chip #2 will be asserted HIGH and thus all of the latches of chip #2 will be reset and the device will be set at its minimum delay. Chip #1, on the other hand, will have both SETMIN and SETMAX deasserted so that its delay will be controlled entirely by the address bus A0-A9. If the delay needed is greater than can be achieved with 1023 gate delays (1111111111 on the A0-A9 address bus), D10 will be asserted to signal the need to cascade the delay to the next EP196 device. When D10 is asserted, the SETMIN pin of chip #2 will be deasserted and the SETMAX pin asserted, resulting in the device delay to be the maximum delay. Table 12 shows the delay time of two EP196 chips in cascade. To expand this cascading scheme to more devices, one simply needs to connect the D10 pin from the next chip to the address bus and CASCADE outputs to the next chip in the same manner as pictured in Figure 6. The only addition to the logic is the increase of one line to the address bus for cascade control of the second programmable delay chip. Furthermore, to fully utilize EP196, the FTUNE pin can be used for additional delay and for finer resolution than 10 ps. As shown in Figure 5, an analog voltage input from DAC can adjust the FTUNE pin with an extra 60 ps of delay for each chip.
TO SELECT MULTIPLEXERS
BIT 0 D0 Q0 LEN SET MIN SET MAX
Set Reset
BIT 1 D1 Q1 LEN
Set Reset
BIT 2 D2 Q2 LEN
Set Reset
BIT 3 D3 Q3 LEN
Set Reset
BIT 4 D4 Q4 LEN
Set Reset
BIT 5 D5 Q5 LEN
Set Reset
BIT 6 D6 Q6 LEN
Set Reset
BIT 7 D7 Q7 LEN
Set Reset
BIT 8 D8 Q8 LEN
Set Reset
BIT 9 D9 Q9 LEN
Set Reset
Figure 7. Expansion of the Latch Section of the EP196 Block Diagram
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MC100EP196
Table 12. CASCADED DELAY VALUE OF TWO EP196S
VARIABLE INPUT TO CHIP #1 AND SETMIN FOR CHIP #2 INPUT FOR CHIP #1 D10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 D9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 D8 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 D7 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 D6 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 D5 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 D4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 D3 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 D2 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 1 D1 0 0 1 1 0 0 1 1 0 0 0 0 0 0 0 1 D0 0 1 0 1 0 1 0 1 0 0 0 0 0 0 0 1 Delay Value 0 ps 10 ps 20 ps 30 ps 40 ps 50 ps 60 ps 70 ps 80 ps 160 ps 320 ps 640 ps 1280 ps 2560 ps 5120 ps 10230 ps Total Delay Value 4400 ps 4410 ps 4420 ps 4430 ps 4440 ps 4450 ps 4460 ps 4470 ps 4480 ps 4560 ps 4720 ps 5040 ps 5680 ps 6960 ps 9520 ps 14630 ps
VARIABLE INPUT TO CHIP #1 AND SETMAX FOR CHIP #2 INPUT FOR CHIP #1 D10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 D8 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 D7 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 D6 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 D5 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 D4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 D3 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 D2 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 1 D1 0 0 1 1 0 0 1 1 0 0 0 0 0 0 0 1 D0 0 1 0 1 0 1 0 1 0 0 0 0 0 0 0 1 Delay Value 10240 ps 10250 ps 10260 ps 10270 ps 10280 ps 10290 ps 10300 ps 10310 ps 10320 ps 10400 ps 10560 ps 10880 ps 11520 ps 12800 ps 15360 ps 20470 ps Total Delay Value 14640 ps 14650 ps 14660 ps 14670 ps 14680 ps 14690 ps 14700 ps 14710 ps 14720 ps 14800 ps 14960 ps 15280 ps 15920 ps 17200 ps 19760 ps 24870 ps
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MC100EP196
Multi-Channel Deskewing The most practical application for EP196 is in multiple channel delay matching. Slight differences in impedance and cable length can create large timing skews within a high-speed system. To deskew multiple signal channels, each channel can be sent through each EP196 as shown in Figure 8. One signal channel can be used as reference and the other EP196s can be used to adjust the delay to eliminate the timing skews. Nearly any high-speed system can be fine tuned (as small as 10 ps) to reduce the skew to extremely tight tolerances using the available FTUNE pin.
EP196 IN IN #1 Q Q
EP196 IN IN #2 Q Q
EP196 IN IN #N Control Logic Digital Data DAC Q Q
Figure 8. Multiple Channel Deskewing Diagram
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MC100EP196
Q Driver Device Q Zo = 50 W 50 W 50 W D Zo = 50 W D Receiver Device
VTT VTT = VCC - 2.0 V
Figure 9. Typical Termination for Output Driver and Device Evaluation (See Application Note AND8020/D - Termination of ECL Logic Devices.)
ORDERING INFORMATION
Device MC100EP196FA MC100EP196FAG MC100EP196FAR2 MC100EP196FAR2G Package LQFP-32 LQFP-32 (Pb-Free) LQFP-32 LQFP-32 (Pb-Free) Shipping 250 Units / Tray 250 Units / Tray 2000 / Tape & Reel 2000 / Tape & Reel
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
Resource Reference of Application Notes
AN1405/D AN1406/D AN1503/D AN1504/D AN1568/D AN1672/D AND8001/D AND8002/D AND8020/D AND8066/D AND8090/D - ECL Clock Distribution Techniques - Designing with PECL (ECL at +5.0 V) - ECLinPSt I/O SPiCE Modeling Kit - Metastability and the ECLinPS Family - Interfacing Between LVDS and ECL - The ECL Translator Guide - Odd Number Counters Design - Marking and Date Codes - Termination of ECL Logic Devices - Interfacing with ECLinPS - AC Characteristics of ECL Devices
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17
MC100EP196
PACKAGE DIMENSIONS
32 LEAD LQFP CASE 873A-02 ISSUE C
-T-, -U-, -Z- AE P V V1 DETAIL Y
BASE METAL
32
A1
A
25
4X
0.20 (0.008) AB T-U Z
1
-T- B B1
8
-U-
17
N
9
S1 S
8X M_
R
J
G -AB-
SEATING PLANE
DETAIL AD CE
SECTION AE-AE
-AC- 0.10 (0.004) AC 0.250 (0.010) H W X DETAIL AD K Q_
GAUGE PLANE
ECLinPS is a trademark of Semiconductor Components Industries, LLC.
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81-3-5773-3850 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative
http://onsemi.com
18
MC100EP196/D
0.20 (0.008)
9
-Z-
0.20 (0.008) AC T-U Z
F
D
M
4X
AC T-U Z
DETAIL Y
AE
EE EE EE

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