PCM1820-Q1 is an automotive, stereo, 113dB, 192kHz, hardware controlled audio analog-to-digital converter

The PCM1820-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 2-VRMS full-scale signals. The device integrates a phase-locked loop (PLL), a DC removal high-pass AD5161BRM50 filter (HPF), and supports sample rates up to 192 kHz. The device supports Time Division Multiplexing (TDM) or I2S audio formats, selectable via hardware pin levels. In addition, the PCM182(0/1)-Q1 supports master-slave mode selection for audio bus interface operation. These integrated high-performance features, along with the ability to operate from a single 3.3 V supply, make this device an excellent choice for cost-sensitive, space-constrained audio systems in far-field microphone recording applications.

The PCM1820-Q1 is specified over a temperature range of –40°C to +125°C and is available in a 20-pin WQFN package.


●Stereo high-performance ADC:

○2 channel analog microphone or line input

● ADC line and microphone differential input performance:

PCM1820-Q1 dynamic range:

123-dB with dynamic range enhancer enabled

113-dB, dynamic range enhancer disabled

PCM1820-Q1 dynamic range: 106 dB

○Total Harmonic Distortion + Noise: –95dB

●ADC differential 2VRMS full-scale input

ADC sample rate (fS) = 8 kHz to 192 kHz

●Hardware pin control configuration

●Linear phase or low delay filter selection

●Flexible audio serial data interface:

○Master-slave interface selection

○32-bit, 2-channel TDM

○32-bit, 2-channel I2S

●Auto power off when audio clock is lost

●Integrated high-performance audio PLL

●Single supply operation: 3.3 V

●I/O power operation: 3.3 V or 1.8 V

●3.3V AVDD power consumption:

○ 19.6 mW/channel, 16 kHz sample rate

○ 21.3 mW/channel, 48 kHz sampling rate


●Car active noise reduction

●Car audio host

●Backseat entertainment

●Digital Cockpit Processing Unit

●Telematics control unit


Number of ADC channels: 2

Analog Inputs: 2

Digital audio interface: I2S, TDM

Control interface: H/W

Sample Rate (Max) (kHz): 192

ADC SNR (Typ) (dB): 113

Approx. Price (USD): 1ku | 2.071

PCM1820-Q1 simplified block diagram

PCM1820-Q1 functional block diagram