PCM1851A集成电路（IC）的ADC/DAC-特殊用途规格书PDF中文资料

PCM1851A属于集成电路（IC）的ADC/DAC-特殊用途。由德州仪器制造生产的PCM1851AADC/DAC - 特殊用途该产品族中的产品可用于模拟和数字表示的信息转换，适用于特定用例，或集成了通用数据转换器中不常见的其他功能。例如针对超声或汽车雷达应用集成了低噪声放大器和可变增益级的器件、注重音频和视频的产品、在段码式显示器上集成显示测量值功能的器件、集成输入输出电气隔离的器件等。

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 kW, Minimum

– PGA Gain: 11-dB 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 (PCM1850A)

– With I2C Control (PCM1851A)

· 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

APPLICATIONS

· DVD/HDD/DVD+HDD Recorder

· AV Amplifier Receiver

· CD Recorder

· MD Recorder

· Multitrack Recorder

· Electric Musical Instrument

DESCRIPTION

The PCM1850A/1851A 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

PCM1850A/1851A 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 PCM1850A/1851A

supports two modes (master and slave) and four data formats through a serial control interface, SPI for the

PCM1850A and I2C for the PCM1851A. The PCM1850A/1851A 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 PCM1850A/1851A is fabricated using a highly advanced CMOS

process and is available in a small 32-pin TQFP package.