PCM1851A Datasheet PDF - TI

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.

● 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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