a High Common-Mode Rejection Differential Line Receiver SSM2141 FEATURES FUNCTIONAL BLOCK DIAGRAM High Common-Mode Rejection DC: 100 dB typ 60 Hz: 100 dB typ 25kW 25kW –IN 2 5 SENSE 20 kHz: 70 dB typ 40 kHz: 62 dB typ 7 +VCC Low Distortion: 0.001% typ Fast Slew Rate: 9.5 V/(cid:109)s typ SSM2141 6 OUTPUT Wide Bandwidth: 3 MHz typ Low Cost Complements SSM2142 Differential Line Driver 4 –VEE 25kW 25kW APPLICATIONS +IN 3 1 REFERENCE Line Receivers Summing Amplifiers Buffer Amplifiers–Drives 600 (cid:86) Load PIN CONNECTIONS 8-Pin Plastic Mini-DIP (P Suffix) Narrow Body SO GENERAL DESCRIPTION (S Suffix) The SSM2141 is an integrated differential amplifier intended to receive balanced line inputs in audio applications requiring a high level of noise immunity and optimum common-mode REFERENCE 1 8 NC rejection. The SSM2141 typically achieves 100 dB of common- –IN 2 SSM2141 7 V+ mode rejection (CMR), whereas implementing an op amp with +IN 3 TOP VIEW 6 OUTPUT (Not to Scale) four off-the-shelf precision resistors will typically achieve only V– 4 5 SENSE 40 dB of CMR—inadequate for high-performance audio. NC = NO CONNECT The SSM2141 achieves low distortion performance by maintaining a large slew rate of 9.5 V/m s and high open-loop gain. Distortion is less than 0.002% over the full audio bandwidth. The SSM2141 complements the SSM2142 balanced line driver. Together, these devices comprise a fully integrated solution for equivalent transformer balancing of audio signals without the problems of distortion, EMI fields, and high cost. Additional applications for the SSM2141 include summing signals, differential preamplifiers, and 600 W low distortion buffer amplifiers. For similar performance with G = 1/2, see SSM2143. REV.C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. otherwise under any patent or patent rights of Analog Devices. Tel: 617/329-4700 Fax: 781/461-3113

SSM2141–SPECIFICATIONS ELECTRICAL CHARACTERISTICS (@ V = (cid:54)18 V, T = +25(cid:56)C, unless otherwise noted) S A SSM2141 Parameter Symbol Conditions Min Typ Max Units OFFSET VOLTAGE V V = 0 V –1000 25 1000 m V OS CM GAIN ERROR No Load, V = – 10 V, R = 0 W 0.001 0.01 % IN S INPUT VOLTAGE RANGE IVR (Note 1) – 10 V COMMON-MODE REJECTION CMR V = – 10 V 80 100 dB CM POWER SUPPLY REJECTION RATIO PSRR V = – 6 V to – 18 V 0.7 15 m V/V S OUTPUT SWING V R = 2 kW – 13 – 14.7 V O L SHORT-CIRCUIT CURRENT LIMIT I Output Shorted to Ground +45/–15 mA SC SMALL-SIGNAL BANDWIDTH (–3 dB) BW R = 2 kW 3 MHz L SLEW RATE SR R = 2 kW 6 9.5 V/m s L TOTAL HARMONIC DISTORTION R = 100 kW 0.001 % L THD R = 600 W 0.01 L CAPACITIVE LOAD DRIVE CAPABILITY C No Oscillation 300 pF L SUPPLY CURRENT I No Load 2.5 3.5 mA SY NOTES 1Input Voltage Range Guaranteed by CMR test. Specifications subject to change without notice ELECTRICAL CHARACTERISTICS (@ V = (cid:54)18 V, –40(cid:56)C £ T £ +85(cid:56)C) S A Parameter Symbol Conditions Min Typ Max Units OFFSET VOLTAGE V V = 0 V –2500 200 2500 m V OS CM GAIN ERROR No Load, V = – 10 V, R = 0 W 0.002 0.02 % IN S INPUT VOLTAGE RANGE IVR (Note 1) – 10 V COMMON-MODE REJECTION CMR V = – 10 V 75 90 dB CM POWER SUPPLY REJECTION RATIO PSRR V = – 6 V to – 18 V 1.0 20 m V/V S OUTPUT SWING V R = 2 kW – 13 – 14.7 V O L SLEW RATE SR R = 2 kW 9.5 V/m s L SUPPLY CURRENT I No Load 2.6 4.0 mA SY NOTES 1Input Voltage Range Guaranteed by CMR test. Specifications subject to change without notice –2– REV. C

SSM2141 ABSOLUTE MAXIMUM RATINGS1 Package Type (cid:117) 2 (cid:117) Units Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 18 V JA JC Input Voltage1 . . . . . . . . . . . . . . . . . . . . . . . . Supply Voltage 8-Pin Plastic DIP (P) 103 43 (cid:176) C/W Output Short-Circuit Duration . . . . . . . . . . . . . . Continuous Storage Temperature Range NOTES 1For supply voltages less than – 18 V, the absolute maximum input voltage is equal P Package . . . . . . . . . . . . . . . . . . . . . . . –65(cid:176) C to +150(cid:176) C to the supply voltage. Lead Temperature (Soldering, 60 sec) . . . . . . . . . . . . +300(cid:176) C 2q is specified for worst case mounting conditions, i.e., q is specified for device JA JA Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . +150(cid:176) C in socket for P-DIP package. Operating Temperature Range . . . . . . . . . . . . –40(cid:176) C to +85(cid:176) C Typical Performance Characteristics Small Signal Transient Response Large Signal Transient Response Common-Mode Rejection vs. Frequency Power Supply Rejection vs. Frequency Total Harmonic Distortion vs. Frequency Dynamic Intermodulation Distortion vs. Frequency REV. C –3–

SSM2141–Typical Performance Characteristics Input Offset Voltage vs. Temperature Closed-Loop Gain vs. Frequency Closed-Loop Output Impedance vs. Frequency Gain Error vs. Temperature Slew Rate vs. Temperature Supply Current vs. Temperature Supply Current vs. Supply Voltage Maximum Output Voltage vs. Maximum Output Voltage vs. Output Current (Source) Output Current (Sink) –4– REV. C

SSM2141 5mV 1S +1µV 0V –1µV 0.1 TO 10Hz PEAK-TO-PEAK NOISE Voltage Noise Density vs. Frequency Low Frequency Voltage Noise 10mV 2mS 10mV 1mS +10µV +10µV 0V 0V –10µV –10µV TVAS == +–152V5(cid:176)C TVAS == +– 2155(cid:176)VC NOTE: EXTERNAL AMPLIFIER GAIN = 1000; NOTE: EXTERNAL AMPLIFIER GAIN = 1000; THEREFORE, VERTICAL SCALE = 10µV/DIV. THEREFORE, VERTICAL SCALE = 10µV/DIV. Voltage Noise from 0 kHz to 10 kHz Voltage Noise from 0 kHz to 1 kHz APPLICATIONS INFORMATION The SSM2141 represents a versatile analog building block. In order to capitalize on fast settling time, high slew rate, and high CMR, proper decoupling and grounding techniques must be employed. For decoupling, place 0.1 m F capacitor located within close proximity from each supply pin to ground. Slew Rate Test Circuit REV. C –5–

SSM2141 MAINTAINING COMMON-MODE REJECTION In order to achieve the full common-mode rejection capability of the SSM2141, the source impedance must be carefully controlled. Slight imbalances of the source resistance will result in a degradation of DC CMR—even a 5 W imbalance will degrade CMR by 20 dB. Also, the matching of the reactive source impedance must be matched in order to preserve the CMRR over frequency. Figure 5.Suitable Instrumentation Amplifier Requirements can be Addressed by Using an Input Stage Consisting of A, A, R and R 1 2 1 2 Figure 1.Precision Difference Amplifier. Rejects [E +E ] Common-Mode Signal = 1 2 by 100 dB 2 Figure 2.Precision Unity Gain Inverting Amplifier Figure 3.Precision Summing Amplifier Figure 4.Precision Summing Amplifier with Gain –6– REV. C

SSM2141 OUTLINE DIMENSIONS 0.400 (10.16) 0.365 (9.27) 0.355 (9.02) 8 5 0.280 (7.11) 0.250 (6.35) 1 4 0.240 (6.10) 0.325 (8.26) 0.310 (7.87) 0.100 (2.54) 0.300 (7.62) BSC 0.060 (1.52) 0.195 (4.95) 0.210 (5.33) MAX 0.130 (3.30) MAX 0.115 (2.92) 0.015 0.150 (3.81) (0.38) 0.015 (0.38) 0.130 (3.30) MIN GAUGE 0.115 (2.92) SEATING PLANE 0.014 (0.36) PLANE 0.010 (0.25) 0.022 (0.56) 0.008 (0.20) 0.005 (0.13) 0.430 (10.92) 0.018 (0.46) MIN MAX 0.014 (0.36) 0.070 (1.78) 0.060 (1.52) 0.045 (1.14) COMPLIANTTO JEDEC STANDARDS MS-001 CONTROLLING DIMENSIONSARE IN INCHES; MILLIMETER DIMENSIONS (RCINEOFRPEANRERERENN LCTEEHA EODSNSEL MSY)AAAYNR BDEE AR CROOEU NNNFODIGETUDAR-POEPFDRFOA INSPC RWHIAH ETOEQL UFEIO VORAR LU EHSNAETL ISFN FLDOEEARSDIGSN.. 070606-A Figure 6. 8-Lead Plastic Dual In-Line Package [PDIP] Narrow Body (N-8) Dimensions shown in inches and (millimeters) 5.00(0.1968) 4.80(0.1890) 8 5 4.00(0.1574) 6.20(0.2441) 3.80(0.1497) 1 4 5.80(0.2284) 1.27(0.0500) 0.50(0.0196) BSC 1.75(0.0688) 0.25(0.0099) 45° 0.25(0.0098) 1.35(0.0532) 8° 0.10(0.0040) 0° COPLANARITY 0.51(0.0201) 0.10 SEATING 0.31(0.0122) 0.25(0.0098) 10..2470((00..00510507)) PLANE 0.17(0.0067) COMPLIANTTOJEDECSTANDARDSMS-012-AA C(RINOEFNPEATRRREOENNLCLTEIHNEOGSNDELISYM)AEANNRDSEIAORRNOESUNANORDETEDAIN-POMPFRIFLOLMPIMIRLELIATIMTEEERTFSEO;RIRNECUQHSUEDIVIINMAELDENENSSTIIOGSNNFS.OR 012407-A Figure 7.8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches) REV. C –7–

SSM2141 ORDERING GUIDE Model1 Temperature Range Package Description Package Option SSM2141PZ −40°C ≤ T ≤ +85°C 8-Lead PDIP N-8 A SSM2141SZ −40°C ≤ T ≤ +85°C 8-Lead SOIC_N R-8 A SSM2141SZ-REEL −40°C ≤ T ≤ +85°C 8-Lead SOIC_N R-8 A 1 Z = RoHS Compliant Part. REVISION HISTORY 6/11—Rev. B to Rev. C Updated Outline Dimensions ......................................................... 7 Changes to Ordering Guide ............................................................ 8 5/91—Rev. A to Rev. B ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D10008-0-6/11(C) –8– REV. C

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