PCM1870A| Datasheet

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PCM1870A
www.ti.com................................................................................................................................................................................................. SLAS617 AUGUST 2008

16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier
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FEATURES
Analog Front End: Stereo Single End Input With MUX Mono Differential Input Stereo Programmable Gain Amplifier Microphone Boost Amplifier and Bias Analog Performances Dynamic Range: 90 dB Power-Supply Voltage 1.71 V to 3.6 V for Digital I/O Section 1.71 V to 3.6 V for Digital Core Section 2.4 V to 3.6 V for Analog Section Low Power Dissipation: 13 mW in Record, 1.8/2.4 V, 48 kHz, Stereo 5.3 mW in Record, 1.8/2.4 V, 8 kHz, Mono 3.3 uW in All Power Down Sampling Frequency: 5 kHz to 50 kHz Auto Level Control for Recording Operation by Single Clock Input Without PLL System Clock: Common Audio Clock (256 fS/384 fS), 12/24, 13/26, 13.5/27, 19.2/38.4, 19.68/39.36 MHz 2 (I2C) or 3 (SPI) Wire Serial Control Programmable Function by Register Control: Digital Soft Mute Hi-Z for LRCK, BCK and DOUT Power Up/Down Control for Each Module 30-dB to 12-dB Gain for Analog Inputs 0/12/20-dB Boost for Microphone Input Parameter Settings for ALC Three-Band Tone Control and 3D Sound High-Pass Fi
lter and Two-Stage Notch Filter

Pop Noise Reduction Circuit Package: 24-DSBGA (2.49 mm 3.49 mm) Operation Temperature Range: 40 C to 85 C

APPLICATIONS
Portable Audio Player, Cellular Phone Video Camcorder, Movie Digital Still Camera PMP/DMB, Voice Recorder

DESCRIPTION
The PCM1870A is a low-power stereo ADC designed for portable digital audio applications, with line-input amplifier, boost amplifier, microphone bias, programmable gain control, sound effects, and auto level control (ALC). It is available in a 24-DSBGA (2.49-mm 3.49-mm) package to save footprint. The PCM1870A accepts right-justified, left-justified, I2S, and DSP formats, providing easy interfacing to audio DSP and encoder chips. Sampling rates up to 50 kHz are supported. The user-programmable functions are accessible through a 2- or 3-wire serial control port.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.