PCM1851PJTR屬于集成電路（IC）的ADC/DAC-特殊用途。由美國德州儀器公司制造生產(chǎn)的PCM1851PJTRADC/DAC - 特殊用途該產(chǎn)品族中的產(chǎn)品可用于模擬和數(shù)字表示的信息轉(zhuǎn)換，適用于特定用例，或集成了通用數(shù)據(jù)轉(zhuǎn)換器中不常見的其他功能。例如針對超聲或汽車雷達應用集成了低噪聲放大器和可變增益級的器件、注重音頻和視頻的產(chǎn)品、在段碼式顯示器上集成顯示測量值功能的器件、集成輸入輸出電氣隔離的器件等。

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.