1 Features
• Stereo high-performance ADC:
– 2-channel analog microphones or line-in
• ADC line and microphone differential input
performance:
– PCM1820-Q1 dynamic range:
• 123-dB, dynamic range enhancer enabled
• 113-dB, dynamic range enhancer disabled
– PCM1821-Q1 dynamic range: 106 dB
– THD+N: –95 dB
• ADC differential 2-VRMS full-scale input
• ADC sample rate (fS) = 8 kHz to 192 kHz
• Hardware pin control configurations
• Linear-phase or low-latency filter selection
• Flexible audio serial data interface:
– Master or slave interface selection
– 32-bits, 2-channel TDM
– 32-bits, 2-channel I2S
• Automatic power-down upon loss of audio clocks
• Integrated high-performance audio PLL
• Single-supply operation: 3.3 V
• I/O-supply operation: 3.3 V or 1.8 V
• Power consumption for 3.3-V AVDD supply:
– 19.6 mW/channel at 16-kHz sample rate
– 21.3 mW/channel at 48-kHz sample rate
2 Applications
• Automotive Active Noise Cancellation
• Automotive Head Unit
• Rear Seat Entertainment
• Digital Cockpit Processing Unit
• Telematics Control Unit
3 Description
The PCM182(0/1)-Q1 is a high-performance, Burr-
Brown™ audio analog-to-digital converter (ADC) that
supports simultaneous sampling of up to two analog
channels. The device supports differential line and
microphone inputs with a 2-VRMS full-scale signal.
The device integrates a phase-locked loop (PLL),
a DC removal high-pass filter (HPF), and supports
sample rates up to 192 kHz. The device supports
time-division multiplexing (TDM) or I2S audio formats,
selectable with the hardware pin level. Additionally,
the PCM182(0/1)-Q1 supports master and slave
mode selection for the audio bus interface operation.
These integrated high-performance features, along
with the ability to be powered from a single supply
of 3.3 V, make the device an excellent choice for costsensitive,
space-constrained audio systems in far-field
microphone recording applications.
The PCM182(0/1)-Q1 is specified from –40°C to
+125°C, and is offered in a 20-pin WQFN package.