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HFA1112
September 1998 File Number 2992.5
850MHz, Low Distortion Programmable Gain Buffer Amplifier
The HFA1112 is a closed loop Buffer featuring user programmable gain and ultra high speed performance. Manufactured on Intersil's proprietary complementary bipolar UHF-1 process, the HFA1112 offers a wide -3dB bandwidth of 850MHz, very fast slew rate, excellent gain flatness, low distortion and high output current. A unique feature of the pinout allows the user to select a voltage gain of +1, -1, or +2, without the use of any external components. Gain selection is accomplished via connections to the inputs, as described in the "Application Information" section. The result is a more flexible product, fewer part types in inventory, and more efficient use of board space. Compatibility with existing op amp pinouts provides flexibility to upgrade low gain amplifiers, while decreasing component count. Unlike most buffers, the standard pinout provides an upgrade path should a higher closed loop gain be needed at a future date. This amplifier is available with programmable output limiting as the HFA1113. For applications requiring a standard buffer pinout, please refer to the HFA1110 datasheet. For Military product, refer to the HFA1112/883 data sheet.
Features
* User Programmable for Closed-Loop Gains of +1, -1 or +2 without Use of External Resistors * Wide -3dB Bandwidth. . . . . . . . . . . . . . . . . . . . . . 850MHz * Very Fast Slew Rate . . . . . . . . . . . . . . . . . . . . . . 2400V/s * Fast Settling Time (0.1%) . . . . . . . . . . . . . . . . . . . . . 11ns * High Output Current . . . . . . . . . . . . . . . . . . . . . . . . . 60mA * Excellent Gain Accuracy . . . . . . . . . . . . . . . . . . . 0.99V/V * Overdrive Recovery . . . . . . . . . . . . . . . . . . . . . . . . <10ns * Standard Operational Amplifier Pinout
Applications
* RF/IF Processors * Driving Flash A/D Converters * High-Speed Communications * Impedance Transformation * Line Driving * Video Switching and Routing * Radar Systems * Medical Imaging Systems * Related Literature - AN9507, Video Cable Drivers Save Board Space
Pinout
HFA1112 (PDIP, SOIC) TOP VIEW
NC -IN +IN V1 300 2 3 4 + 300 8 NC 7 V+ 6 OUT 5 NC
Ordering Information
PART NUMBER (BRAND) HFA1112IP HFA1112IB (H1112I) HFA11XXEVAL TEMP. RANGE (oC) -40 to 85 -40 to 85 PACKAGE 8 Ld PDIP 8 Ld SOIC PKG. NO. E8.3 M8.15
-
High Speed Op Amp DIP Evaluation Board
Pin Description
NAME NC -IN +IN VOUT V+ PIN NUMBER 1, 5, 8 2 3 4 6 7 DESCRIPTION No Connection Inverting Input Non-Inverting Input Negative Supply Output Positive Supply
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. http://www.intersil.com or 407-727-9207 | Copyright (c) Intersil Corporation 1999
HFA1112
Absolute Maximum Ratings
Voltage Between V+ and V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSUPPLY Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60mA
Thermal Information
Thermal Resistance (Typical, Note 1) JA (oC/W) JC (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . 98 N/A SOIC Package . . . . . . . . . . . . . . . . . . . 170 N/A Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only)
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE: 1. JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
PARAMETER INPUT CHARACTERISTICS Output Offset Voltage
VSUPPLY = 5V, AV = +1, RL = 100, Unless Otherwise Specified TEST CONDITIONS TEMP (oC) MIN TYP MAX UNITS
25 Full
39 35 25 240 2.5
8 10 45 9 37 25 50 300 2 2.8
25 35 40 65 360 -
mV mV V/oC dB dB nV/Hz pA/Hz A A k pF V
Output Offset Voltage Drift PSRR
Full 25 Full
Input Noise Voltage (Note 3) Non-Inverting Input Noise Current (Note 3) Non-Inverting Input Bias Current
100kHz 100kHz
25 25 25 Full
Non-Inverting Input Resistance Inverting Input Resistance (Note 2) Input Capacitance Input Common Mode Range TRANSFER CHARACTERISTICS Gain AV = +1, VIN = +2V
25 25 25 Full
25 Full
0.980 0.975 1.96 1.95 -
0.990 1.98 0.02
1.02 1.025 2.04 2.05 -
V/V V/V V/V V/V %
Gain
AV = +2, VIN = +1V
25 Full
DC Non-Linearity (Note 3) OUTPUT CHARACTERISTICS Output Voltage (Note 3)
AV = +2, 2V Full Scale
25
AV = -1
25 Full
3.0 2.5 50 35 -
3.3 3.0 60 50 0.3
-
V V mA mA
Output Current (Note 3)
RL = 50
25, 85 -40
Closed Loop Output Impedance POWER SUPPLY CHARACTERISTICS Supply Voltage Range Supply Current (Note 3)
DC, AV = +2
25
Full 25 Full
4.5 -
21 -
5.5 26 33
V mA mA
2
HFA1112
Electrical Specifications
PARAMETER AC CHARACTERISTICS -3dB Bandwidth (VOUT = 0.2VP-P, Notes 2, 3) AV = -1 AV = +1 AV = +2 Slew Rate (VOUT = 5VP-P, Note 2) AV = -1 AV = +1 AV = +2 Full Power Bandwidth (VOUT = 5VP-P, Note 3) AV = -1 AV = +1 AV = +2 Gain Flatness (to 30MHz, Notes 2, 3) AV = -1 AV = +1 AV = +2 Gain Flatness (to 50MHz, Notes 2, 3) AV = -1 AV = +1 AV = +2 Gain Flatness (to 100MHz, Notes 2, 3) Linear Phase Deviation (to 100MHz, Note 3) AV = -1 AV = +2 AV = -1 AV = +1 AV = +2 2nd Harmonic Distortion (30MHz, VOUT = 2VP-P, Notes 2, 3) AV = -1 AV = +1 AV = +2 3rd Harmonic Distortion (30MHz, VOUT = 2VP-P, Notes 2, 3) AV = -1 AV = +1 AV = +2 2nd Harmonic Distortion (50MHz, VOUT = 2VP-P, Notes 2, 3) AV = -1 AV = +1 AV = +2 3rd Harmonic Distortion (50MHz, VOUT = 2VP-P, Notes 2, 3) AV = -1 AV = +1 AV = +2 2nd Harmonic Distortion (100MHz, VOUT = 2VP-P, Notes 2, 3) AV = -1 AV = +1 AV = +2 3rd Harmonic Distortion (100MHz, VOUT = 2VP-P, Notes 2, 3) AV = -1 AV = +1 AV = +2 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 450 500 350 1500 800 1100 800 850 550 2400 1500 1900 300 150 220 0.02 0.1 0.015 0.05 0.2 0.036 0.10 0.07 0.13 0.83 0.05 -52 -57 -52 -71 -73 -72 -47 -53 -47 -63 -68 -65 -41 -50 -42 -55 -49 -62 0.04 0.08 0.22 -45 -65 -40 -55 -35 -45 MHz MHz MHz V/s V/s V/s MHz MHz MHz dB dB dB dB dB dB dB dB Degrees Degrees Degrees dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc VSUPPLY = 5V, AV = +1, RL = 100, Unless Otherwise Specified (Continued) TEST CONDITIONS TEMP (oC) MIN TYP MAX UNITS
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HFA1112
Electrical Specifications
PARAMETER 3rd Order Intercept (AV = +2, Note 3) 1dB Compression (AV = +2, Note 3) Reverse Isolation (S12, Note 3) VSUPPLY = 5V, AV = +1, RL = 100, Unless Otherwise Specified (Continued) TEST CONDITIONS 100MHz 300MHz 100MHz 300MHz 40MHz 100MHz 600MHz TRANSIENT CHARACTERISTICS Rise Time (VOUT = 0.5V Step, Note 2) AV = -1 AV = +1 AV = +2 Rise Time (VOUT = 2V Step) AV = -1 AV = +1 AV = +2 Overshoot (VOUT = 0.5V Step, Input tR/tF = 200ps, Notes 2, 3, 4) AV = -1 AV = +1 AV = +2 0.1% Settling Time (Note 3) 0.05% Settling Time Overdrive Recovery Time Differential Gain VOUT = 2V to 0V VOUT = 2V to 0V VIN = 5VP-P AV = +1, 3.58MHz, RL = 150 AV = +2, 3.58MHz, RL = 150 Differential Phase AV = +1, 3.58MHz, RL = 150 AV = +2, 3.58MHz, RL = 150 NOTES: 2. This parameter is not tested. The limits are guaranteed based on lab characterization, and reflect lot-to-lot variation. 3. See Typical Performance Curves for more information. 4. Overshoot decreases as input transition times increase, especially for AV = +1. Please refer to Typical Performance Curves. 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 500 480 700 0.82 1.06 1.00 12 45 6 11 15 8.5 0.03 0.02 0.05 0.04 800 750 1000 30 65 20 ps ps ps ns ns ns % % % ns ns ns % % Degrees Degrees TEMP (oC) 25 25 25 25 25 25 25 MIN TYP 28 13 19 12 -70 -60 -32 MAX UNITS dBm dBm dBm dBm dB dB dB
Application Information
Closed Loop Gain Selection
The HFA1112 features a novel design which allows the user to select from three closed loop gains, without any external components. The result is a more flexible product, fewer part types in inventory, and more efficient use of board space. This "buffer" operates in closed loop gains of -1, +1, or +2, and gain selection is accomplished via connections to the inputs. Applying the input signal to +IN and floating -IN selects a gain of +1, while grounding -IN selects a gain of +2. A gain of -1 is obtained by applying the input signal to -IN with +IN grounded. The table below summarizes these connections:
GAIN (ACL) -1 +1 +2 CONNECTIONS +INPUT (PIN 3) GND Input Input -INPUT (PIN 2) Input NC (Floating) GND
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HFA1112 PC Board Layout
The frequency response of this amplifier depends greatly on the amount of care taken in designing the PC board. The use of low inductance components such as chip resistors and chip capacitors is strongly recommended, while a solid ground plane is a must! Attention should be given to decoupling the power supplies. A large value (10F) tantalum in parallel with a small value (0.1F) chip capacitor works well in most cases. Terminated microstrip signal lines are recommended at the input and output of the device. Capacitance directly on the output must be minimized, or isolated as discussed in the next section. For unity gain applications, care must also be taken to minimize the capacitance to ground seen by the amplifier's inverting input. At higher frequencies this capacitance will tend to short the -INPUT to GND, resulting in a closed loop gain which increases with frequency. This will cause excessive high frequency peaking and potentially other problems as well. An example of a good high frequency layout is the Evaluation Board shown in Figure 2. overdamped response, while points below or left of the curve indicate areas of underdamped performance. RS and CL form a low pass network at the output, thus limiting system bandwidth well below the amplifier bandwidth of 850MHz. By decreasing RS as CLincreases (as illustrated in the curves), the maximum bandwidth is obtained without sacrificing stability. Even so, bandwidth does decrease as you move to the right along the curve. For example, at AV = +1, RS = 50, CL = 30pF, the overall bandwidth is limited to 300MHz, and bandwidth drops to 100MHz at AV = +1, RS = 5, CL = 340pF.
50 45 40 35 30 25 20 15 10 5 0 0
AV = +1
RS ()
AV = +2 40 80 120 160 200 240 280 320 LOAD CAPACITANCE (pF) 360 400
FIGURE 1. RECOMMENDED SERIES OUTPUT RESISTOR vs LOAD CAPACITANCE
Driving Capacitive Loads
Capacitive loads, such as an A/D input, or an improperly terminated transmission line will degrade the amplifier's phase margin resulting in frequency response peaking and possible oscillations. In most cases, the oscillation can be avoided by placing a resistor (RS) in series with the output prior to the capacitance. Figure 1 details starting points for the selection of this resistor. The points on the curve indicate the RS and CL combinations for the optimum bandwidth, stability, and settling time, but experimental fine tuning is recommended. Picking a point above or to the right of the curve yields an
Evaluation Board
The performance of the HFA1112 may be evaluated using the HFA11XX Evaluation Board, slightly modified as follows: 1. Remove the 500 feedback resistor (R2), and leave the connection open. 1. a. For AV = +1 evaluation, remove the 500 gain setting resistor (R1), and leave pin 2 floating. b. For AV = +2, replace the 500 gain setting resistor with a 0 resistor to GND. The layout and modified schematic of the board are shown in Figure 2. To order evaluation boards (part number HFA11XXEVAL), please contact your local sales office.
(AV = +1) or 0 (AV = +2)
R1 50 IN 0.1F -5V GND 1 2 3 4 10F 8 7
VH 0.1F 50 6 5 GND OUT VL 10F +5V +IN
TOP LAYOUT
VH 1
BOTTOM LAYOUT
OUT V+ VL VGND
FIGURE 2. EVALUATION BOARD SCHEMATIC AND LAYOUT
5
HFA1112 Typical Performance Curves
200 AV = +2 150 OUTPUT VOLTAGE (mV) OUTPUT VOLTAGE (V) 100 50 0 -50 -100 -150 -200 TIME (5ns/DIV.) 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 TIME (5ns/DIV.)
VSUPPLY = 5V, TA = 25oC, RL = 100, Unless Otherwise Specified
2.0 AV = +2
FIGURE 3. SMALL SIGNAL PULSE RESPONSE
200 150 OUTPUT VOLTAGE (mV) 100 50 0 -50 -100 -150 -200 TIME (5ns/DIV.) AV = +1 2.0 1.5 OUTPUT VOLTAGE (V) 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0
FIGURE 4. LARGE SIGNAL PULSE RESPONSE
AV = +1
TIME (5ns/DIV.)
FIGURE 5. SMALL SIGNAL PULSE RESPONSE
FIGURE 6. LARGE SIGNAL PULSE RESPONSE
200 150 OUTPUT VOLTAGE (mV) 100 50 0 -50 -100 -150 -200 TIME (5ns/DIV.) AV = -1
2.0 1.5 OUTPUT VOLTAGE (V) 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 TIME (5ns/DIV.) AV = -1
FIGURE 7. SMALL SIGNAL PULSE RESPONSE
FIGURE 8. LARGE SIGNAL PULSE RESPONSE
6
HFA1112 Typical Performance Curves
NORMALIZED GAIN (dB) 6 VOUT = 200mVP-P 3 0 -3 -6 -9 PHASE -90 AV = +2 AV = -1 AV = +1 -180 -270 -360 GAIN AV = -1 AV = +2 0 AV = +1 9 GAIN (dB) NORMALIZED PHASE (DEGREES) 6 3 0 GAIN RL = 50 RL = 100 RL = 1k 0 PHASE RL = 100 RL = 50 RL = 1k 0.3 1 10 100 FREQUENCY (MHz) -90 -180 -270 -360 1000 PHASE (DEGREES) PHASE (DEGREES) PHASE (DEGREES) AV = +2, VOUT = 200mVP-P
VSUPPLY = 5V, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued)
0.3
1
10 FREQUENCY (MHz)
100
1000
FIGURE 9. FREQUENCY RESPONSE
FIGURE 10. FREQUENCY RESPONSE FOR VARIOUS LOAD RESISTORS
6 3 GAIN (dB) 0 -3 -6 -9
AV = +1, VOUT = 200mVP-P
6 RL = 1k GAIN (dB) 3 0 -3 -6 -9 0 PHASE (DEGREES)
AV = -1, VOUT = 200mVP-P
RL = 1k
GAIN
RL = 100 RL = 50
GAIN
RL = 100 RL = 50
RL = 100 180 PHASE 90 0 RL = 50 RL = 1k 0.3 1 10 100 FREQUENCY (MHz) -90 -180 1000
PHASE RL = 100 RL = 50 RL = 1k 0.3 1 10 100 FREQUENCY (MHz) -90 -180 -270 -360 1000
FIGURE 11. FREQUENCY RESPONSE FOR VARIOUS LOAD RESISTORS
FIGURE 12. FREQUENCY RESPONSE FOR VARIOUS LOAD RESISTORS
12 GAIN (dB) 9 6
AV = +2
1VP-P GAIN (dB)
6 3 0
AV = +1
GAIN 3 0 PHASE 4.0VP-P PHASE (DEGREES) 2.5VP-P 0 -90 4.0VP-P 2.5VP-P 1VP-P 0.3 1 10 100 FREQUENCY (MHz) -180 -270 -360 1000
GAIN -3 -6
VOUT = 4VP-P VOUT = 2.5VP-P VOUT = 1VP-P 0
PHASE -90 VOUT = 4VP-P VOUT = 2.5VP-P VOUT = 1VP-P 0.3 1 10 100 FREQUENCY (MHz) -180 -270 -360 1000
FIGURE 13. FREQUENCY RESPONSE FOR VARIOUS OUTPUT VOLTAGES
FIGURE 14. FREQUENCY RESPONSE FOR VARIOUS OUTPUT VOLTAGES
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HFA1112 Typical Performance Curves
6 GAIN (dB) 3 GAIN 0 -3 -6 PHASE PHASE (DEGREES) 180 90 VOUT = 4VP-P VOUT = 2.5VP-P VOUT = 1VP-P -180 0.3 1 10 100 FREQUENCY (MHz) 1000 0 -90 NORMALIZED GAIN (dB) VOUT = 1VP-P AV = -1 VOUT = 2.5VP-P VOUT = 4VP-P
VSUPPLY = 5V, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued)
15 12 9 6 3 0 -3 -6 -9 -12 -15 0.3 1 10 FREQUENCY (MHz) 100 1000 AV = -1 AV = +2 AV = +1 VOUT = 5VP-P
FIGURE 15. FREQUENCY RESPONSE FOR VARIOUS OUTPUT VOLTAGES
FIGURE 16. FULL POWER BANDWIDTH
900 850 800 BANDWIDTH (MHz) 750 700 650 600 AV = +2 550 500 -50 -25 0 25 50 75 100 125 TEMPERATURE (oC) AV = +1 AV = -1 NORMALIZED GAIN (dB)
0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 -0.05 -0.10 -0.15 1 10 FREQUENCY (MHz) 100 AV = +2 AV = +1 AV = -1
FIGURE 17. -3dB BANDWIDTH vs TEMPERATURE
FIGURE 18. GAIN FLATNESS
4 3 DEVIATION (DEGREES) 2 1 0 -1 -2 -3 -4 -5 -6 0 15 30 45 60 75 90 105 120 135 150 -2 3 8 13 18 23 28 33 38 43 48 AV = +2 AV = +1 AV = -1 SETTLING ERROR (%) 0.6 0.4 0.2 0.1 0 -0.1 -0.2 -0.4 -0.6 AV = +2, VOUT = 2V
FREQUENCY (MHz)
TIME (ns)
FIGURE 19. DEVIATION FROM LINEAR PHASE
FIGURE 20. SETTLING RESPONSE
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HFA1112 Typical Performance Curves
-24 -30 -36 -42 GAIN (dB) -48 -54 GAIN (dB) -60 -66 -72 -78 -84 0 20 40 60 80 100 120 140 160 180 200 FREQUENCY (MHz) AV = +2 AV = -1 AV = +2 AV = -1 AV = +1 -24 -30 -36 -42 -48 -54 -60 100 190 280 370 460 550 640 730 FREQUENCY (MHz) 820 910 1000 AV = -1 AV = +1 AV = -1 AV = +2 AV = +2 GAIN PHASE AV = +1 90 45 0
VSUPPLY = 5V, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued)
PHASE (DEGREES) 235 180
FIGURE 21. LOW FREQUENCY REVERSE ISOLATION (S12)
OUTPUT POWER AT 1dB COMPRESSION (dBm) 20 18 AV = -1
FIGURE 22. HIGH FREQUENCY REVERSE ISOLATION (S12)
30 2 - TONE
INTERCEPT POINT (dBm)
16 14 12 10 8 6 4 2 0 100 200 AV = +1
AV = -1 20
AV = +2 AV = +1 10
AV = +2
300 FREQUENCY (MHz)
400
500
0 100
200
300
400
FREQUENCY (MHz)
FIGURE 23. 1dB GAIN COMPRESSION vs FREQUENCY
FIGURE 24. 3rd ORDER INTERMODULATION INTERCEPT vs FREQUENCY
-20 AV = +2 -30 -40 DISTORTION (dBc) DISTORTION (dBc) -50 -60 100MHz -70 -80 -90 -100 -6 -3 0 3 6 9 12 15 OUTPUT POWER (dBm) 50MHz 30MHz
-20 -30 -40 -50 -60 -70 -80 -90 -100 -6
AV = +2
30MHz 50MHz 100MHz
-3
0
3
6
9
12
15
18
OUTPUT POWER (dBm)
FIGURE 25. 2nd HARMONIC DISTORTION vs POUT
FIGURE 26. 3rd HARMONIC DISTORTION vs POUT
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HFA1112 Typical Performance Curves
-20 AV = +1 -30 -40 DISTORTION (dBc) DISTORTION (dBc) -50 -60 -70 -80 -90 -100 -6 -3 0 3 6 9 OUTPUT POWER (dBm) 12 15 100MHz 50MHz 30MHz -30 -40 -50 -60 -70 100MHz -80 -90 -100 -6 50MHz 30MHz
VSUPPLY = 5V, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued)
-20 AV = +1
-3
0 3 6 9 OUTPUT POWER (dBm)
12
15
FIGURE 27. 2nd HARMONIC DISTORTION vs POUT
-20 AV = -1 -30 -40 DISTORTION (dBc) DISTORTION (dBc) -50 -60 -70 -80 -90 -100 -6 -3 0 3 6 9 OUTPUT POWER (dBm) 12 15 100MHz 50MHz 30MHz
FIGURE 28. 3rd HARMONIC DISTORTION vs POUT
-20 AV = -1 -30 -40 -50 -60 -70 -80 50MHz -90 -100 -6 -3 0 3 6 9 12 15 OUTPUT POWER (dBm) 100MHz 30MHz
FIGURE 29. 2nd HARMONIC DISTORTION vs POUT
FIGURE 30. 3rd HARMONIC DISTORTION vs POUT
0.04
60 VOUT = 0.5V 50
PERCENT ERROR (%)
0.02 OVERSHOOT (%) 40
AV = +1
0
30
20 AV = -1 10 AV = +2 0
-0.02
-0.04 -3.0 -2.0 -1.0 0 1.0 INPUT VOLTAGE (V) 2.0 3.0
100
300
500
700
900
1100
1300
INPUT RISE TIME (ps)
FIGURE 31. INTEGRAL LINEARITY ERROR
FIGURE 32. OVERSHOOT vs INPUT RISE TIME
10
HFA1112 Typical Performance Curves
60 VOUT = 1V 50 OVERSHOOT (%) OVERSHOOT (%) 50
VSUPPLY = 5V, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued)
60 VOUT = 2V
40 AV = +1 30
40 AV = +1
30
20 AV = -1 AV = +2 0 100 300 500 700 900 1100 1300
20 AV = +2
10
10 AV = -1 0 100 300 500 700 900 1100 1300
INPUT RISE TIME (ps)
INPUT RISE TIME (ps)
FIGURE 33. OVERSHOOT vs INPUT RISE TIME
22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 5 6 7 8 9 10 TOTAL SUPPLY VOLTAGE (V+ - V-, V) 25 24 23 SUPPLY CURRENT (mA) 22 21 20 19 18 17 16 15
FIGURE 34. OVERSHOOT vs INPUT RISE TIME
SUPPLY CURRENT (mA)
-50
-25
0
25
50
75
100
125
TEMPERATURE (oC)
FIGURE 35. SUPPLY CURRENT vs SUPPLY VOLTAGE
FIGURE 36. SUPPLY CURRENT vs TEMPERATURE
3.6 3.5 3.4 OUTPUT VOLTAGE (V) 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 -50 -25 0 25 50 75 TEMPERATURE (oC) 100 125 |-VOUT| (RL= 50) |-VOUT| (RL= 100) AV = -1 +VOUT (RL= 50) +VOUT (RL= 100) NOISE VOLTAGE (nV/Hz)
50
130
30
90
20 ENI 10 INI 0 0.1 1 10 FREQUENCY (kHz)
70
50
30 100
FIGURE 37. OUTPUT VOLTAGE vs TEMPERATURE
FIGURE 38. INPUT NOISE CHARACTERISTICS
11
NOISE CURRENT (pA/Hz)
40
110
HFA1112 Die Characteristics
DIE DIMENSIONS: 63 mils x 44 mils x 19 mils 1600m x 1130m 483m METALLIZATION: Type: Metal 1: AlCu (2%)/TiW Thickness: Metal 1: 8kA 0.4kA Type: Metal 2: AlCu (2%) Thickness: Metal 2: 16kA 0.8kA PASSIVATION: Type: Nitride Thickness: 4kA 0.5kA TRANSISTOR COUNT: 52 SUBSTRATE POTENTIAL (Powered Up): Floating (Recommend Connection to V-)
Metallization Mask Layout
HFA1112
NC
+IN
V-
-IN NC
NC
NC
V+
OUT
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Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
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