Datasheet > ADAU7112

ADAU7112

更新时间： 2023-12-20 18:45:47

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管转换器
页数	文件大小	规格书
14页	331K
描述
立体声 PDM 至 I2S/TDM 转换器

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数据手册

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ADAU7112 数据手册

Stereo PDM to I²S/TDM Converter

Data Sheet

ADAU7112

FEATURES

FUNCTIONAL BLOCK DIAGRAM

1.10V TO 1.98V

1.70V TO 3.63V

2 channels of PDM audio inputs from digital microphones

64× decimation ratio of PDM to PCM audio data

24-bit resolution to support high sound pressure level (SPL)

microphones

DVDD

GND

IOVDD

126 dB A-weighted SNR

4 kHz to 96 kHz output sampling rate

Bit clock rates of 64×, 128×, 192×, 256×, 384×, or 512× the

output sampling rate

PDM_CLK

PDM_DAT

BCLK

PDM

INPUT

PORT

DIGITAL

DECIMATION

FILTERING

I S/TDM

OUTPUT

PORT

FSYNC

SDATA

Automatic PDM clock generation

Automatic power-down when BCLK is removed

0.36 mA DVDD operating current at 48 kHz sampling rate

and 1.8 V supply

ADAU7112

CONFIG

Slave I²S or TDM output interface

Figure 1.

Up to TDM-16 supported

Configurable TDM slots

I/O supply voltage from 1.70 V to 3.63 V

DVDD core supply voltage from 1.10 V to 1.98 V

4 μA typical DVDD shutdown current

9-ball, 1.26 mm × 1.26 mm, 0.4 mm pitch WLCSP

Power-on reset

APPLICATIONS

Mobile computing

Portable electronics

Consumer electronics

Professional electronics

GENERAL DESCRIPTION

The ADAU7112 converts stereo pulse density modulation

(PDM) bit streams into one pulse code modulation (PCM) output

stream. The source for the PDM data can be two microphones

or other PDM sources. The PCM audio data is output on a serial

audio interface port in either inter-IC serial (I²S) or time domain

multiplexed (TDM) format.

The ADAU7112 is specified over a commercial temperature

range of −40°C to +85°C. The ADAU7112 is available in a

halide-free, 9-ball, 1.26 mm × 1.26 mm, 0.4 mm pitch, wafer

level chip scale package (WLCSP).

Rev. 0

Document Feedback

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 that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Technical Support

www.analog.com

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