PCM1841QRGERQ1-Texas Instruments-Price, Stock & Datasheet

The PCM1841-Q1 is a high-performance, Burr-Brown™ audio analog-to-digital converter (ADC) that supports simultaneous sampling of up to four analog channels. The device supports differential line and microphone inputs with a 2VRMS full-scale signal. The device integrates microphone bias voltage, a phase-locked loop (PLL), a DC removal high-pass filter (HPF), and supports sample rates up to 192kHz. The device supports time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats, selectable with the hardware pin level. Additionally, the PCM1841-Q1 supports controller and target 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 3.3V, make the device an excellent choice for cost-sensitive, space-constrained audio systems in far-field microphone recording applications.

The PCM1841-Q1 is specified from –40°C to +125°C and is offered in a 24-pin VQFN package.

Multichannel high-performance ADC:
- 4-channel analog microphones or line-in
ADC line and microphone differential input performance:
- Dynamic range:
  - 123dB, dynamic range enhancer enabled
  - 113dB, dynamic range enhancer disabled
- THD+N: –98dB
ADC differential 2VRMS full-scale input
ADC sample rate (fS) = 8kHz to 192kHz
Hardware pin control configurations
Linear-phase or low-latency filter selection
Flexible audio serial data interface:
- Controller or target interface selection
- 32-bits, 4-channel TDM
- 32-bits, 2-channel TDM
- 32-bits, 2-channel I2S
- 32-bits, 2-channel left-justified (LJ)
Automatic power-down upon loss of audio clocks
Integrated high-performance audio PLL
Low-noise MICBIAS 2.75V output
Single-supply operation: 3.3V
I/O-supply operation: 3.3V or 1.8V
Power consumption for 3.3V AVDD supply:
- 17.0 mW/channel at 16kHz sample rate
- 18.4 mW/channel at 48kHz sample rate