ADAU1761 SigmaDSP® Stereo, Low Power, 96 kHz, 24-Bit Audio Codec with Integrated PLL

The ADAU1761 is a low power, stereo audio codec with integrated digital audio processing that supports stereo 48 kHz record and playback at 14 mW from a 1.8 V analog supply. The stereo audio ADCs and DACs support sample rates from 8 kHz to 96 kHz as well as a digital volume control.

The SigmaDSP® core features 28-bit processing (56-bit double precision). The processor allows system designers to compensate for the real-world limitations of microphones, speakers, amplifiers, and listening environments, resulting in a dramatic improvement in the perceived audio quality through equalization, multiband compression, limiting, and third-party branded algorithms.

The SigmaStudio™ graphical development tool is used to program the ADAU1761. This software includes audio processing blocks such as filters, dynamics processors, mixers, and low level DSP functions for fast development of custom signal flows.

The record path includes an integrated microphone bias circuit and six inputs. The inputs can be mixed and muxed before the ADC, or they can be configured to bypass the ADC. The ADAU1761 includes a stereo digital microphone input.

The ADAU1761 includes five high power output drivers (two differential and three single-ended), supporting stereo head-phones, an earpiece, or other output transducer. AC-coupled or capless configurations are supported. Individual fine level controls are supported on all analog outputs. The output mixer stage allows for flexible routing of audio.

Applications

Smartphones / Multimedia phones
Digital Still Cameras / Digital Video Cameras
Portable Media Players/ Portable Audio Players
Phone accessories products

Features and Benefits

SigmaDSP 28-/56-bit 50 MIPS digital audio processor
Fully programmable with SigmaStudio graphical tool
24-bit stereo audio ADC and DAC: >98 dB SNR
Sampling rates from 8 kHz to 96 kHz\
Linux Driver
Low power: 7 mW record, 7 mW playback, 48 kHz at 1.8 V

6 analog input pins, configurable for single-ended or differential inputs
Flexible analog input/output mixers
Please see data sheet for additional features

Reference Designs

Data Sheets

Document	note
ADAU1761: SigmaDSP® Stereo, Low Power, 96 kHz, 24-Bit Audio Codec with Integrated PLL Data Sheet (Rev. C)	PDF 1354 kB

Application Notes

Document	note
AN-1323: High Performance Digital MEMS Microphone Simple Interface to SigmaDSP Audio Codec (Rev. D)	PDF 77.87 K
AN-1324: High Performance Analog MEMS Microphone’s Simple Interface to SigmaDSP Audio Codec (Rev. B)	PDF 140.48 K
AN-951: Using Hardware Controls with SigmaDSP GPIO Pins (Rev. A)	PDF 439 kB
AN-1056: Capless Headphone Virtual Ground Short-Circuit Protection for the ADAU1361 and ADAU1761 Low Power Codecs (Rev. 0)	PDF 77 kB
AN-1006: Using the EVAL-ADUSB2EBZ (Rev. A)	PDF 349 kB

Frequently Asked Questions

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Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADAU1761BCPZ Production	32 ld LFCSP (5x5mm) w/3.5mm exposed pad	OTH 490	-40 to 85C	6.2	3.91	Y
ADAU1761BCPZ-R7 Production	32 ld LFCSP (5x5mm) w/3.5mm exposed pad	REEL 1500	-40 to 85C	0	3.91	Y
ADAU1761BCPZ-RL Production	32 ld LFCSP (5x5mm) w/3.5mm exposed pad	REEL 5000	-40 to 85C	0	3.91	Y