PCM1851A - 具有 6x2 通道 MUX 和 PGA 的 101dB SNR 立体声 ADC

PCM1851A是TI德州仪器公司的一款音频ADC产品，PCM1851A是具有 6x2 通道 MUX 和 PGA 的 101dB SNR 立体声 ADC，本站介绍了PCM1851A的封装应用图解、特点和优点、功能等，并给出了与PCM1851A相关的TI元器件型号供参考。

PCM1851A - 具有 6x2 通道 MUX 和 PGA 的 101dB SNR 立体声 ADC - 音频ADC - 音频转换器 - 德州仪器

产品描述

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.

产品特性

Multiplexer and Programmable–Gain Amplifier (PGA)
- 6×2–Channel Single–Ended Inputs
- Multiplexed Output
- Maximum Input Level: 2.4 V rms
- Input Resistance: 50 k, 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

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