1 Features
• Stereo high-performance ADC:
– 2-channel analog microphones or line-in
• ADC line and microphone differential and singleended
input performance:
– PCM1822-Q1 dynamic range:
• 117-dB, dynamic range enhancer enabled
• 111-dB, dynamic range enhancer disabled
– THD+N: –95 dB
• 1-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 PCM1822-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 single-ended and
differential line and microphone inputs with a 1-
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 PCM1822-Q1
supports master and slave mode selection for the
audio bus interface operation. These integrated highperformance
features, along with the ability to be
powered from a single supply of 3.3 V, make the
device an excellent choice for cost-sensitive, spaceconstrained
audio systems in far-field microphone
recording applications.
The PCM1822-Q1 is specified from –40°C to +125°C,
and is offered in a 20-pin WQFN package.