FEATURES

Multiplexer and Programmable-Gain Amplifier

(PGA)

− 6×2-Channel Single-Ended Inputs

− Multiplexed Output

− Maximum Input Level: 2.4 V rms

− Input Resistance: 50 kΩ, Minimum

− PGA Gain: 11 to –11 dB Range,

0.5 dB/Step

24-Bit Delta-Sigma Stereo A/D Converter

Antialiasing Filter Included

Oversampling Decimation Filter

− Oversampling Frequency: ×64

− Pass-Band Ripple: ±0.05 dB

− Stop-Band Attenuation: –65 dB

− On-Chip High-Pass Filter: 0.91 Hz (48 kHz)

High Performance

− THD+N: 0.0023% (Typically)

− SNR: 101 dB (Typically)

− Dynamic Range: 102 dB (Typically)

PCM Audio Interface

− Master/Slave Mode Selectable

− Data Formats: 24-Bit Left Justified,

24-Bit I2S, 16-, 24-Bit Right Justified

Mode Control by Serial Interface:

− With SPI Control (PCM1850)

− With I2C Control (PCM1851)

Sampling Rate: 16–96 kHz

System Clock: 256 fs, 384 fs, 512 fs, 768 fs

Dual Power Supplies:

5 V for Analog, 3.3 V for Digital

Package: 32-Pin TQFP

Lead-Free Product

APPLICATIONS

DVD/HDD/DVD+HDD Recorder

AV Amplifier Receiver

CD Recorder

MD Recorder

Multi-Track Recorder

Electric Musical Instrument

DESCRIPTION

The PCM1850/1851 is a high-performance, low-cost, single-chip stereo analog-to-digital converter with a single-ended

analog front end that consists of a 6-stereo-input multiplexer and wide-range PGA. The PCM1850/1851 includes a

delta-sigma modulator with 64-times oversampling, a digital decimation filter and a low-cut filter that removes the dc

component of the input signal. For various applications, the PCM1850/1851 supports two modes (master and slave) and

four data formats through a serial control interface, SPI for the PCM1850 and I2C for the PCM1851, respectively. The

PCM1850/1851 is suitable for a wide variety of cost-sensitive DVD/CD/MD recorder and receiver applications where good

performance and operation from a 5-V analog supply and 3.3-V digital supply is required. The PCM1850/1851 is fabricated

using a highly advanced CMOS process and is available in a small 32-pin TQFP package.