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

All other trademarks are the property of their respective owners