The SSM2143 is an integrated differential amplifier intended to receive balanced line inputs in audio applications requiring a high level of immunity from common-mode noise. The device provides a typical 90 dB of common-mode rejection (CMR), which is achieved by laser trimming of resistances to better than 0.005%.

Additional features of the device include a slew rate of 10 V/µs and wide bandwidth. Total harmonic distortion (THD) is less than 0.004% over the full audio band, even while driving low impedance loads. The SSM2143 input stage is designed to handle input signals as large as +28 dBu at G = 1/2. Although primarily intended for G = 1/2 applications, a gain of 2 can be realized by reversing the +IN/-IN and SENSE/REFERENCE connections.

When configured for a gain of 1/2, the SSM2143 and SSM2142 Balanced Line Driver provide a fully integrated, unity gain solution to driving audio signals over long cable runs. For similar performance with G = 1, see SSM2141.

Part#	Instructions/Cycles	DAC DNR (dB)	DAC THD+N @ 1 kHz (-3dB)	ADC DNR (dB)	ADC THD+N (dB)	Digital I/O Channels	Analog I/O Channels	Product Description	Price* (1000-4999)
AD1940	1,536	n/a	n/a	-	-	16/16	0/0	SigmaDSP Multichannel 28-/56-Bit Audio Processor w/ 4-Wire SPI ® control interface.	$8.09
AD1941	1,536	n/a	n/a	-	-	16/16	0/0	SigmaDSP Multichannel 28-/56-Bit Audio Processor w/ 2-wire I2C ® control interface.	$8.35
AD1953	512	112	100	-	-	4/6	0/3	SigmaDSP 3 Ch, 26-/48-Bit Processing D/A	$7.06
AD1954	512	112	100	-	-	4/2	0/3	SigmaDSP 3 Ch, 26-/48-Bit Processing D/A	$7.06
ADAU1401	1,024	104	90	100	-83	8/8	2/4	28/56-Bit Automotive Audio Processor with Two ADCs and Four DACs	-
ADAU1701	1,024	104	90	100	-83	8/8	2/4	SigmaDSP® 28/56-Bit Audio Processor with Two ADCs and Four DACs	$4.47

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
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• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

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For detailed drawings and chemical composition please consult our  Package Site

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• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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