SSM2141SZ

a FEATURES High Common-Mode Rejection DC: 100 dB typ 60 Hz: 100 dB typ 20 kHz: 70 dB typ 40 kHz: 62 dB typ Low Distortion: 0.001% typ Fast Slew Rate: 9.5 V/ms typ Wide Bandwidth: 3 MHz typ Low Cost Complements SSM2142 Differential Line Driver APPLICATIONS Line Receivers Summing Amplifiers Buffer Amplifiers–Drives 600 V Load High Common-Mode Rejection Differential Line Receiver SSM2141 FUNCTIONAL BLOCK DIAGRAM 25kΩ 25kΩ –IN 2 5 SENSE 7 +VCC SSM2141 6 OUTPUT 4 –VEE 25kΩ 25kΩ +IN 3 1 REFERENCE PIN CONNECTIONS GENERAL DESCRIPTION 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 rejection. The SSM2141 typically achieves 100 dB of commonmode rejection (CMR), whereas implementing an op amp with four off-the-shelf precision resistors will typically achieve only 40 dB of CMR—inadequate for high-performance audio. 8-Pin Plastic Mini-DIP (P Suffix) Narrow Body SO (S Suffix) 8 NC REFERENCE 1 –IN 2 SSM2141 7 V+ 6 OUTPUT TOP VIEW (Not to Scale) 5 SENSE V– 4 +IN 3 NC = NO CONNECT The SSM2141 achieves low distortion performance by maintaining a large slew rate of 9.5 V/µs 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 Ω 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 otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 781/461-3113 SSM2141–SPECIFICATIONS ELECTRICAL CHARACTERISTICS (@ VS = 618 V, TA = +258C, unless otherwise noted) Parameter Symbol Conditions Min OFFSET VOLTAGE VOS VCM = 0 V –1000 No Load, VIN = ± 10 V, RS = 0 Ω GAIN ERROR INPUT VOLTAGE RANGE IVR (Note 1) ± 10 COMMON-MODE REJECTION CMR VCM = ± 10 V 80 POWER SUPPLY REJECTION RATIO PSRR VS = ± 6 V to ± 18 V OUTPUT SWING VO RL = 2 kΩ ± 13 SHORT-CIRCUIT CURRENT LIMIT ISC Output Shorted to Ground +45/–15 SMALL-SIGNAL BANDWIDTH (–3 dB) BW RL = 2 kΩ SLEW RATE SR RL = 2 kΩ THD SSM2141 Typ Max Units 1000 µV 0.001 0.01 % 25 V 100 0.7 dB 15 ± 14.7 µV/V V mA 3 MHz 9.5 V/µs RL = 100 kΩ RL = 600 Ω 0.001 0.01 % CAPACITIVE LOAD DRIVE CAPABILITY CL No Oscillation 300 pF SUPPLY CURRENT No Load 2.5 3.5 mA TOTAL HARMONIC DISTORTION ISY 6 NOTES 1 Input Voltage Range Guaranteed by CMR test. Specifications subject to change without notice ELECTRICAL CHARACTERISTICS (@ V = 618 V, –408C ≤ T ≤ +858C) S A Parameter Symbol Conditions Min Typ Max Units OFFSET VOLTAGE VOS VCM = 0 V –2500 200 2500 µV 0.002 0.02 % No Load, VIN = ± 10 V, RS = 0 Ω GAIN ERROR INPUT VOLTAGE RANGE IVR (Note 1) ± 10 COMMON-MODE REJECTION CMR VCM = ± 10 V 75 POWER SUPPLY REJECTION RATIO PSRR VS = ± 6 V to ± 18 V OUTPUT SWING VO RL = 2 kΩ SLEW RATE SR SUPPLY CURRENT ISY V 90 1.0 ± 13 dB 20 µV/V ± 14.7 V RL = 2 kΩ 9.5 V/µs No Load 2.6 4.0 mA NOTES 1 Input Voltage Range Guaranteed by CMR test. Specifications subject to change without notice –2– REV. C SSM2141 ABSOLUTE MAXIMUM RATINGS 1 Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V Input Voltage1 . . . . . . . . . . . . . . . . . . . . . . . . Supply Voltage Output Short-Circuit Duration . . . . . . . . . . . . . . Continuous Storage Temperature Range P Package . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C Lead Temperature (Soldering, 60 sec) . . . . . . . . . . . . +300°C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . +150°C Operating Temperature Range . . . . . . . . . . . . –40°C to +85°C Package Type uJA2 uJC Units 8-Pin Plastic DIP (P) 103 43 °C/W NOTES 1 For supply voltages less than ± 18 V, the absolute maximum input voltage is equal to the supply voltage. 2 θJA is specified for worst case mounting conditions, i.e., θJA is specified for device in socket for P-DIP package. Typical Performance Characteristics REV. C 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 –3– SSM2141–Typical Performance Characteristics Input Offset Voltage vs. Temperature Closed-Loop Gain vs. Frequency Gain Error vs. Temperature Slew Rate vs. Temperature Supply Current vs. Supply Voltage Maximum Output Voltage vs. Output Current (Source) –4– Closed-Loop Output Impedance vs. Frequency Supply Current vs. Temperature Maximum Output Voltage vs. Output Current (Sink) REV. C SSM2141 1S 5mV +1µV 0V –1µV 0.1 TO 10Hz PEAK-TO-PEAK NOISE Low Frequency Voltage Noise Voltage Noise Density vs. Frequency 2mS 10mV 1mS 10mV +10µV +10µV 0V 0V –10µV –10µV TA = +25°C TA = +25°C VS = ±15V VS = ±15V NOTE: EXTERNAL AMPLIFIER GAIN = 1000; THEREFORE, VERTICAL SCALE = 10µV/DIV. NOTE: EXTERNAL AMPLIFIER GAIN = 1000; 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 µF 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 Ω 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 A1, A2, R1 and R2 Figure 1. Precision Difference Amplifier. Rejects [E1 + E 2 ] Common-Mode Signal = 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 1 4 0.280 (7.11) 0.250 (6.35) 0.240 (6.10) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.100 (2.54) BSC 0.060 (1.52) MAX 0.210 (5.33) MAX 0.015 (0.38) MIN 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) SEATING PLANE 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.195 (4.95) 0.130 (3.30) 0.115 (2.92) 0.015 (0.38) GAUGE PLANE 0.014 (0.36) 0.010 (0.25) 0.008 (0.20) 0.430 (10.92) MAX 0.005 (0.13) MIN 0.070 (1.78) 0.060 (1.52) 0.045 (1.14) 070606-A COMPLIANT TO JEDEC STANDARDS MS-001 CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. CORNER LEADS MAY BE CONFIGURED AS WHOLE OR HALF LEADS. 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) 1 5 4 1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 0.10 SEATING PLANE 6.20 (0.2441) 5.80 (0.2284) 1.75 (0.0688) 1.35 (0.0532) 0.51 (0.0201) 0.31 (0.0122) 0.50 (0.0196) 0.25 (0.0099) 8° 0° 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) COMPLIANT TO JEDEC STANDARDS MS-012-AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 7.8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches) REV. C –7– 45° 012407-A 8 4.00 (0.1574) 3.80 (0.1497) SSM2141 ORDERING GUIDE Model1 SSM2141PZ SSM2141SZ SSM2141SZ-REEL 1 Temperature Range −40°C ≤ TA ≤ +85°C −40°C ≤ TA ≤ +85°C −40°C ≤ TA ≤ +85°C Package Description 8-Lead PDIP 8-Lead SOIC_N 8-Lead SOIC_N Package Option N-8 R-8 R-8 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