LOW NOISE, JFET INPUT OPERATIONAL AMPLIFIERS

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Bruce Waters
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1 Order this document by TL7/D These low noise JFET input operational amplifiers combine two stateoftheart analog technologies on a single monolithic integrated circuit. Each internally compensated operational amplifier has well matched high voltage JFET input device for low input offset voltage. The BIFET technology provides wide bandwidths and fast slew rates with low input bias currents, input offset currents, and supply currents. Moreover, the devices exhibit low noise and low harmonic distortion, making them ideal for use in high fidelity audio amplifier applications. These devices are available in single, dual and quad operational amplifiers which are pincompatible with the industry standard M7, M, and the M33/LM32 bipolar products. Low Input Noise Voltage: nv/ 2 Hz Typ Low Harmonic Distortion:.% Typ Low Input Bias and Offset urrents High Input Impedance: 2 Ω Typ High Slew Rate: 3 V/µs Typ Wide Gain Bandwidth:. MHz Typ Low Supply urrent:. ma per Amp LOW NOISE, JFET INPUT OPERATIONAL AMPLIFIERS P SUFFIX ASE 626 Offset Null Inv Input Noninvt Input SEMIONDUTOR TEHNIAL DATA PIN ONNETIONS TL7 (Top View) D SUFFIX ASE 7 (SO) N V Output Offset Null Output A Inputs A TL72 (Top View) V Output B Inputs B PIN ONNETIONS N SUFFIX ASE 66 (TL7 Only) Output Output Op Amp Function ORDERING INFORMATION Device Operating Temperature Range Package Inputs V Inputs Single TL7D TL7AP TA = to 7 SO Plastic DIP Inputs Inputs 3 Dual TL72D TL72AP TA = to 7 SO Plastic DIP Quad TL7N, AN TA = to 7 Plastic DIP Output 2 7 TL7 (Top View) Output 3 MOTOROLA ANALOG I DEVIE DATA Motorola, Inc. 997 Rev

2 MAXIMUM RATINGS Rating Symbol Value Unit Supply Voltage V V Differential Input Voltage VID ±3 V Input Voltage Range (Note ) VIDR ± V Output Short ircuit Duration (Note 2) ts ontinuous Power Dissipation Plastic Package (N, P) PD 6 mw Derate above TA = 7./θJA mw/ Operating Ambient Temperature Range TA to 7 Storage Temperature Range Tstg 6 to NOTES:. The magnitude of the input voltage must not exceed the magnitude of the supply voltage or V, whichever is less. 2. The output may be shorted to ground or either supply. Temperature and/or supply voltages must be limited to ensure that power dissipation ratings are not exceeded. 3. ESD data available upon request. ELETRIAL HARATERISTIS (V = V, = V, TA = Thigh to Tlow [Note ]) haracteristics Symbol Min Typ Max Unit Input Offset Voltage (RS k, VM = ) VIO mv TL7, TL72 3 TL7 3 TL7_A 7. Input Offset urrent (VM = ) (Note 2) IIO na TL7_ 2. TL7_A 2. Input Bias urrent (VM = ) (Note 2) IIB na TL7_ 7. TL7_A 7. LargeSignal Voltage Gain (VO = ± V, RL 2. k) AVOL V/mV TL7_ TL7_A 2 Output Voltage Swing (PeaktoPeak) VO V (RL k) 2 (RL 2. k) 2 NOTES:. T low = for TL7,A T high =7 for TL7,A for TL72,A T high =7 for TL72,A for TL7,A T high =7 for TL7,A 2. Input Bias currents of JFET input op amps approximately double for every rise in junction temperature as shown in Figure 3. To maintain junction temperature as close to ambient temperature as possible, pulse techniques must be used during testing. Figure. Unity Gain Voltage Follower Figure 2. Inverting Gain of Amplifier k Vin VO Vin. k VO L = pf RL L = pf 2 MOTOROLA ANALOG I DEVIE DATA

3 ELETRIAL HARATERISTIS (V = V, = V, TA = 2, unless otherwise noted.) haracteristics Symbol Min Typ Max Unit Input Offset Voltage (RS k, VM = ) VIO mv TL7, TL72 3. TL7 3. TL7_A Average Temperature oefficient of Input Offset Voltage VIO/ T µv/ RS = Ω, TA = Tlow to Thigh (Note ) Input Offset urrent (VM = ) (Note 2) IIO pa TL7_. TL7_A. Input Bias urrent (VM = ) (Note 2) IIB pa TL7_ 3 2 TL7_A 3 2 Input Resistance ri 2 Ω ommon Mode Input Voltage Range VIR V TL7_ ±, 2 TL7_A ±, 2 LargeSignal Voltage Gain (VO = ± V, RL 2. k) AVOL V/mV TL7_ 2 TL7_A Output Voltage Swing (PeaktoPeak) VO 2 2 V (RL = k) ommon Mode Rejection Ratio (RS k) MRR db TL7_ 7 TL7_A Supply Voltage Rejection Ratio (RS k) PSRR db TL7_ 7 TL7_A Supply urrent (Each Amplifier) ID. 2. ma Unity Gain Bandwidth BW. MHz Slew Rate (See Figure ) SR 3 v/µs Vin = V,, L = pf Rise Time (See Figure ) tr. µs Overshoot (Vin = 2 mv,, L = pf) OS % Equivalent Input Noise Voltage en nv/ Hz RS = Ω, f = Hz Equivalent Input Noise urrent in. pa/ Hz RS = Ω, f = Hz Total Harmonic Distortion THD. % VO (RMS) = V, RS. k, RL 2. k, f = Hz hannel Separation S 2 db AV = NOTES:. T low = for TL7,A T high =7 for TL7,A for TL72,A T high =7 for TL72,A for TL7,A T high =7 for TL7,A 2. Input Bias currents of JFET input op amps approximately double for every rise in junction temperature as shown in Figure 3. To maintain junction temperature as close to ambient temperature as possible, pulse techniques must be used during testing. MOTOROLA ANALOG I DEVIE DATA 3

4 I IB, INPUT BIAS URRENT (na).. Figure 3. Input Bias urrent VO, OUTPUT VOLTAGE SWING (Vpp) Figure. Output Voltage Swing versus Frequency ± V ±. V TA = 2 (See Figure 2) TA, AMBIENT TEMPERATURE ( ). k k k. M M f, FREQUENY (Hz) VO, OUTPUT VOLTAGE SWING (Vpp) 3 2. Figure. Output Voltage Swing versus Load Resistance TA = 2 (See Figure 2) VO, OUTPUT VOLTAGE SWING (Vpp) 3 2 TA = 2 Figure 6. Output Voltage Swing versus Supply Voltage RL, LOAD RESISTANE (kω). 2 V,, SUPPLY VOLTAGE (±V) VO, OUTPUT VOLTAGE SWING (Vpp) Figure 7. Output Voltage Swing (See Figure 2) RL = k TA, AMBIENT TEMPERATURE ( ), SUPPLY DRAIN URRENT (ma) I D Figure. Supply urrent per Amplifier TA, AMBIENT TEMPERATURE ( ) MOTOROLA ANALOG I DEVIE DATA

5 VOL, OPENLOOP GAIN V Figure 9. Large Signal Voltage Gain and Phase Shift versus Frequency Gain Phase Shift... k k k. M M f, FREQUENY (Hz) TA = PHASE SHIFT (DEGREES) VVOL, VOLTAGE GAIN (V/mV) Figure. Large Signal Voltage Gain TA, AMBIENT TEMPERATURE ( ) VO = ± V. M NORMALIZED SLEW RATE Figure. Normalized Slew Rate TA, AMBIENT TEMPERATURE ( ) e n, EQUIVALENT INPUT NOISE VOLTAGE ( nv/ Hz ) Figure 2. Equivalent Input Noise Voltage versus Frequency dc AV = RS = Ω TA = f, FREQUENY (Hz) THD, TOTAL HARMONI DISTORTION (%) Figure 3. Total Harmonic Distortion versus Frequency AV =. VO = 6. V (RMS) TA = f, FREQUENY (Hz) MOTOROLA ANALOG I DEVIE DATA

6 Q3 Representative Schematic Diagram (Each Amplifier) Output Q Q Q2 Q Bias ircuitry ommon to All Amplifiers V Q6 Inputs J J2 Q7 2. k Q Q pf Q9 Q2 Q23 2 J3 Q2 Q22 Q2 Q2 Q3 Q6 Q Q Q9 Q Q7 Q2 Offset Null (TL7 only). k Q. k Input k Figure. Audio Tone ontrol Amplifier k k.33 µf.33 µf k 3.3 k.33 µf.33 µf k 6 k V TL7 Output TurnOver Frequency =. khz Bass Boost/ut ±2 db at 2 Hz Treble Boost/ut ±9 db at 2 khz Figure. High Q Notch Filter Input R R TL7 R f o 2R 3 Hz R 2R. M 2 3 pf 6 MOTOROLA ANALOG I DEVIE DATA

7 OUTLINE DIMENSIONS P SUFFIX ASE 626 ISSUE K NOTE 2 T SEATING PLANE H B F A L J N M D K G.3 (.) M T A M B M NOTES:. DIMENSION L TO ENTER OF LEAD WHEN FORMED PARALLEL. 2. PAKAGE ONTOUR OPTIONAL (ROUND OR SQUARE ORNERS). 3. DIMENSIONING AND TOLERANING PER ANSI Y.M, 92. MILLIMETERS INHES DIM MIN MAX MIN MAX A B D F G 2. BS. BS H J K L 7.62 BS.3 BS M N D SUFFIX ASE 7 (SO) ISSUE S A E B A e D B H A.2 M B S A S.2 M B M SEATING PLANE. h X L NOTES:. DIMENSIONING AND TOLERANING PER ASME Y.M, DIMENSIONS ARE IN MILLIMETERS. 3. DIMENSION D AND E DO NOT INLUDE MOLD PROTRUSION.. MAXIMUM MOLD PROTRUSION. PER SIDE.. DIMENSION B DOES NOT INLUDE MOLD PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE.27 TOTAL IN EXESS OF THE B DIMENSION AT MAXIMUM MATERIAL ONDITION. MILLIMETERS DIM MIN MAX A.3.7 A..2 B D.. E 3.. e.27 BS H. 6.2 h.2. L..2 7 MOTOROLA ANALOG I DEVIE DATA 7

8 OUTLINE DIMENSIONS 7 B N SUFFIX ASE 666 ISSUE M NOTES:. DIMENSIONING AND TOLERANING PER ANSI Y.M, ONTROLLING DIMENSION: INH. 3. DIMENSION L TO ENTER OF LEADS WHEN FORMED PARALLEL.. DIMENSION B DOES NOT INLUDE MOLD FLASH.. ROUNDED ORNERS OPTIONAL. T SEATING PLANE N A INHES MILLIMETERS DIM MIN MAX MIN MAX A F L B D F G. BS 2. BS H J K K J L M H G D PL M N (.) M Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola 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 consequential or incidental damages. Typical parameters which may be provided in Motorola 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. Motorola does not convey any license under its patent rights nor the rights of others. Motorola 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 Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola 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 Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. Mfax is a trademark of Motorola, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 32, P.O. Box, Denver, olorado or 27 NishiGotanda, Shinagawaku, Tokyo, Japan. 37 ustomer Focus enter: 2627 Mfax : RMFAX@ .sps.mot.com TOUHTONE ASIA/PAIFI: Motorola Semiconductors H.K. Ltd.; B Tai Ping Industrial Park, Motorola Fax Back System US & anada ONLY 77 Ting Kok Road, Tai Po, N.T., Hong Kong HOME PAGE: TL7/D MOTOROLA ANALOG I DEVIE DATA

Amplifiers JFET INPUT OPERATIONAL AMPLIFIERS

Amplifiers JFET INPUT OPERATIONAL AMPLIFIERS Order this document by TLC/D These lowcost JFET input operational amplifiers combine two stateof theart linear technologies on a single monolithic integrated circuit. Each internally compensated operational