Texas Instruments PCM1870YZFR

Description
The PCM1870 is a low-power stereo ADC designed for portable digital audio applications. It features a line-input amplifier, boost amplifier, microphone bias, programmable gain control, sound effects, and auto level control (ALC). The PCM1870 is available in 24-QFN (4 mm x 5 mm) and 24-DSBGA (2.49 mm x 3.49 mm) packages. It accepts right-justified, left-justified, 12S, 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.

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 μW 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 (C) or 3 (SPI) Wire Serial Control
Programmable Function by Register Control:
Digital Soft Mute
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 Filter and Two-Stage Notch Filter
Pop Noise Reduction Circuit
Package:
24-QFN (4 mm x 5 mm)
24-DSBGA (2.49 mm x 3.49 mm)

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