The AD1881A meets the Audio Codec ’97 2.0 and 2.1 Extensions. In addition, the AD1881A SoundMAX Codec is designed to meet all requirements of the Audio Codec ’97, Component Specification, Revision 1.03, © 1996, Intel Corporation, found on Intel's web site. The AD1881A also includes some other Codec enhanced features such as the built-in PHAT Stereo 3D enhancement.

The AD1881A is an analog front end for high performance PC audio applications. The AC’97 architecture defines a 2-chip audio solution comprising a digital audio controller, plus a high quality analog component that includes Digital-to-Analog Converters (DACs), Analog-to-Digital Converters (ADCs), mixer and I/O.

The main architectural features of the AD1881A are the high quality analog mixer section, two channels of ΣΔ ADC conversion, two channels of ΣΔ DAC conversion with Data Direct Scram-bling (D²S) rate generators. The AD1881A’s left channel ADC and DAC are compatible for modem applications supporting irra-tional sample rates and modem filtering requirements.

Four Analog Line-Level Stereo Inputs for Connection from LINE,CD,VIDEO,and AUX

Two Analog Line-Level Mono Inputs for Speakerphone and PC BEEP

Mono MIC Input Switchable from Two External Sources

High Quality CD Input with Ground Sense

Stereo Line-Level Output

Mono Output for Speakerphone or Internal Speaker

Power Management Support

Part#	# DAC	DAC DNR (dB)	# of ADCs	ADC DNR (dB)	Product Description	Price* (1000-4999)
AD1819B	2	90	2	87	AC '97 Compliant Serial-Port CODEC	$5.77
AD1845	2	74	2	73	Parallel-Port 16-Bit SoundPort Stereo Codec	$8.66
AD1881A	2	90	2	87	AC '97 Compliant CODEC	$3.93
AD1882	6	95	4	90	HD Audio	$2.44
AD1883	4	90	4	85	HD Audio CODEC, 4DACs/4ADCs, exceeds Microsoft Vista Premium performance for notebooks	$2.45
AD1884	4	90	4	85	HD Audio	$2.38
AD1884A	4	90	4	85	Audio CODEC, 4DACs/4ADCs, exceeds Microsoft Vista Premium performance for notebooks	$2.45
AD1885	2	90	2	87	AC '97 Compliant CODEC	$3.06
AD1886A	2	90	2	87	AC '97 Compliant CODEC	$4.85
AD1888	6	90	2	80	AC '97 Compliant CODEC	$2.22
AD1980	6	90	2	82	AC '97 Compliant CODEC	$2.48
AD1981B	2	90	2	85	AC '97 Compliant CODEC	$2.62
AD1981BL	2	90	2	83	AC '97 Compliant Low Power CODEC	$3.08
AD1981HD	2	90	2	85	HD Audio CODEC with SPDIF	$2.57
AD1983	2	90	2	85	2 Ch HD Audio Codec Single Chip	$2.50
AD1984	4	96	4	90	HD Audio	$3.11
AD1984A	4	96	4	90	Audio CODEC, 4DACs/4ADCs, exceeds Microsoft Vista Premium performance for notebooks	$2.79
AD1984B	4	96	4	90	HD Audio CODEC, 4DACs/4ADCs, exceeds Microsoft Vista Premium performance	$3.15
AD1986	6	90	2	85	AC '97 Compliant CODEC	$3.69
AD1986A	6	90	2	85	HD Audio and AC '97 Compliant CODEC	$2.44
AD1987	8	95	4	90	HD Audio Codec, 8 DACs/4ADCs, Exceeds Microsoft Vista Premium Performance	$2.72
AD1988A	10	95	4	90	HD Audio	$2.85
AD1988B	10	101	6	92	HD Audio	$3.21

* 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.

The model number is a specific version of a generic that can be purchased or sampled.

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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.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• 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).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• 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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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.