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TS612
DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT
. . . . . .
LOW NOISE : 3nV/ 1.2pA/ Hz, Hz HIGH OUTPUT CURRENT : 200mA min. VERY LOW HARMONIC AND INTERMODULATION DISTORTION HIGH SLEW RATE : 40V/s SPECIFIED FOR 25 LOAD POWER DOWN FUNCTION
D SO20 (Plastic Micropackage)
ORDER CODES
Part Number TS612ID Temperature Range -40, +85 C
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Package D *
PIN CONNECTIONS (top view)
DESCRIPTION The TS612 is a dual operational amplifier featuring a high output current (200mA min.), large gainbandwidth product (130MHz) and capable of driving a 25 load with a 160mA output current at 6V power supply. This device is particularly intended for applications where multiple carriers must be amplified simultaneously with very low intermodulation products. The TS612 is housed in a SO20 batwing package for a very low thermal resistance. The TS612 is fitted out with Power Down function in order to decrease the consumption. APPLICATIONS UPSTREAM line driver for Assymetric Digital Subscriber Line (ADSL) (NT).
June 1999
Powe r Down 1 Inve rting Input 1 2 Non-inverting input 1 3 Vcc- 4 Vcc- 5 Vcc- 6 Vcc- 7 Non-inverting input 2 8 Inve rting input 2 9 P owe r Down 10
20 Vcc+ 1
+
19 Output 1 18 Vcc17 Vcc16 Vcc15 Vcc14 Vcc13 GND 12 Output 2 11 Vcc+ 2
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ABSOLUTE MAXIMUM RATINGS
Symbol VCC Vid Vi Toper Tstg Tj R thjc
Note : 1. 2. 3. 4.
Parameter Supply Voltage - note 1 Differential Input Voltage - note 2 Input Voltage - note 3 Operating Free Air Temperature Range TS612ID Storage Temperature Maximum Junction Temperature Thermal Resistance Junction to Case Output Short Circuit Duration
Value 7 2 6 -40 to +85 -65 to +150 150 25 see note 4
Unit V V V
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C C C
C/W
All voltages values, except differential voltage are with respect to network ground terminal. Differential voltages are non-inverting input terminal with respect to the inverting input terminal. The magnitude of input and output voltages must never exceed VCC +0.3V. An output current limitation protects the circuit from transient currents. Short-circuits can cause excessive heating. Destructive dissipation can result from short circuit on amplifiers.
OPERATING CONDITIONS
Symbol VCC Vicm Supply Voltage Common Mode Input Voltage Parameter Value 2.5 to 6 (VCC)+2 to (VCC+)-1 Unit V V
VCC+1 and VCC+2 are both VCC+ supply pins and they are internally connected together. VCC- (pin18) is not internally connected with the other VCC- pins and must be externally connected to VCC-.
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TS612
ELECTRICAL CHARACTERISTICS VCC = 6V, Tamb = 25oC (unless otherwise specified)
Symbol Vio Vio Iio Iib ICC VOH VOL AVD Parameter Input Offset Voltage Differential Input Offset Voltage Input Offset Current Input Bias Current Total Supply Current per Operator High Level Output Voltage RL connected to GND Low Level Output Voltage RL connected to GND Large Signal Voltage Gain Test Condition Tamb = 25oC Tmin. < Tamb < Tmax. Tamb = 25oC Tmin. < Tamb < Tmax. o Tamb = 25 C Tmin. < Tamb < Tmax. Tamb = 25oC Tmin. < Tamb < Tmax. No load, Vout = 0 Iout = 160mA RL =25 Iout = 160mA RL =25 Vout = 7Vpeak RL = 25 Tamb = 25oC Tmin. < Tamb < Tmax. AVCL = +11, f = 20MHz, RL = 100 Vic = 2V to 2V Tmin. < Tamb < Tmax. Vic = 6V to 4V Tmin. < Tamb < Tmax. Vic = 6V, Tamb = 25 C Tmin. < Tamb < Tmax. o Vic = 6V, Tamb = 25 C Tmin. < Tamb < Tmax. AVCL = +7, RL = 50 RL = 25//15pF RL = 25//15pF f = 100kHz f = 100kHz Vout = 4Vpp, f = 100kHz AVCL = -10 RL = 25//15pF Vout = 4Vpp, f = 100kHz AVCL = -10 RL = 25//15pF Vout = 4Vpp, f = 100kHz AVCL = -10 RL = 25//15pF F1 = 80kHz, F2 = 70kHz Load = 25//15pF Vout = 8Vpp, AVCL = -10 F1 = 80kHz, F2 = 70kHz Load = 25//15pF Vout = 8Vpp, AVCL = -10 Vout = 4Vpp, f = 1MHz AVCL = +2 RL = 25//15pF Vout = 4Vpp, f = 1MHz AVCL = +2 RL = 25//15pF
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Min. -6
Typ. -1
Max. 6 10 6 3 5 15 30
Unit mV mV A A MA V
0.2 5 14 4.5 -4.5
4
-4
V V/V
GBP CMR SVR Ios Isink Isource SR M14 M6 en in THD
Gain Bandwidth Product Common Mode Rejection Ratio Supply Voltage Rejection Ratio Output Short Circuit Current Output Sink Current Output Source Current Slew Rate Phase Margine at AVCL = 14dB Phase Margine at AVCL = 6dB Equivalent Input Noise Voltage Equivalent Input Noise Current Total Harmonic Distorsion
6500 5000 80 90 70 70 50 +200 +180
11000 130 108 88 320 MHz dB dB mA mA -200 -180 mA V/s deg deg nV/ Hz pA/ Hz dB
23
40 60 40 3 1.2 -69
HD2
2nd Harmonic Distorsion
dBc -70 dBc -80 dBc -77 dBc -77 dBc -74 dBc -79
HD3
3rd Harmonic Distorsion
IM2
2nd Order Intermodulation Product
IM3
3rd Order Intermodulation Product
HD2
2nd Harmonic Distorsion
HD3
3rd Harmonic Distorsion
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TS612
POWER DOWN MODE
Symbol Vpdw Parameter Pin 1/10 Threshold Voltage for Power Down Mode Low level High level Supply Consumption per Operator Power Down Mode Output Resistance Power Down Mode Output Capacitance LOGIC INPUT Power Down 1 0 0 1 1 Power Down 2 0 1 0 1 Op-Amp 1 Enable Enable Power Down Power Down STATUS Op-Amp 2 Enable Power Down Enable Power Down 1.4 33 Min. Typ. 0 3.3 Max. 0.8 75 A m pF Unit V 2
ICC pdw Rpdw Cpdw
POWER MODE POSITION
POWER DOWN MODE OUTPUT IMPEDANCE For the Power-Down mode the driver output is on "high impedance" state. It is really the case for the static mode. For the dynamic mode the impedance decreases due to a capacitive effect of the collector-substrat and base-collector junction, then the impedance behaviour is capacitive and resistive (as shown on the following diagram) with Rout = 1.4M and Cout = 33pF.
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TS612
TYPICAL APPLICATION Differential Line Driver with Active Impedance Matching
Equivalent circuit for one line
Vout = (G.Vin) - (R out.I out) with Rout = Rs1/(1-R2/3) G = (1+2R2/R1+R2/R3)/(1-R2/R3) the gain for the unloaded device GL = G/2 the gain for the loaded device The aim of the active impedance matching : By using a classical impedance matching (or passive impedance matching), a Vout*=2V out output line amplitude. With the active impedance matching it is possible to hold a Vs line amplitude with a Vout* smaller than 2Vout. The advantage of this concept is to have a larger line amplitude without saturation of the output amplifier while keeping a good impedance matching. Components calculation : R out = 1/2RL G = 2GL with GL and ((Vout*max-Voutmax)/Voutmax) fixed by the user
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TS612
TS612 INTERMODULATION DISTORTION The curves shown below are the measurements results of a single operator wired as an adder with a gain of 20dB. The operational amplifier is supplied by a symmetric 6V and is loaded with 25. Two synthesizers (Rhode & Schwartz SME) generate two frequencies (tones) (70 & 80kHz ; 180 & 280kHz). THIRD ORDER INTERMODULATION F1 = 180kHz ; F2 = 280kHz An HP3585 spectrum analyzer measures the spurious level at different frequencies. The curves are traced for differentoutput levels (the value in the X ax is the value of each tone). The output levels of the two tones are the same. The generators and spectrum analyzer are phase locked to enhance measurement precision.
THIRD ORDER INTERMODULATION F1 = 70kHz ; F2 = 80kHz
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TS612
SECOND ORDER INTERMODULATION F1 = 180kHz ; F2 = 280kHz, spurious measurement @ 100kHz
MAXIMUM OUTPUT SWING The TS612 drives a 25 load @ 100kHz and is supplied with 6V
INPUT EQUIVALENT NOISE
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PACKAGE MECHANICAL DATA 20 PINS - PLASTIC MICROPACKAGE (SO)
Dimensions A a1 a2 b b1 C c1 D E e e3 F L M S
Min. 0.1 0.35 0.23
Millimeters Typ.
Max. 2.65 0.3 2.45 0.49 0.32 45 (typ.)
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Min. 0.004 0.014 0.009
Inches Typ.
Max. 0.104 0.012 0.096 0.019 0.013
0.5 12.6 10 1.27 11.43 7.4 0.5 7.6 1.27 0.75 8o (Max.) 0.291 0.020 13.0 10.65 0.496 0.394
0.020 0.512 0.419 0.050 0.450 0.299 0.050 0.030
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement 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 STMicroelectronics. Specifications mentioned in this pub lication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a trademark of STMicroelectronics (c) 1999 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. (c) http://www.st.com
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