Product details

Number of ADC channels 2 Analog inputs 2 Digital audio interface I2S, TDM Control interface H/W Sampling rate (max) (kHz) 192 ADC SNR (typ) (dB) 102 Rating Catalog Analog outputs 0 Operating temperature range (°C) -40 to 105
Number of ADC channels 2 Analog inputs 2 Digital audio interface I2S, TDM Control interface H/W Sampling rate (max) (kHz) 192 ADC SNR (typ) (dB) 102 Rating Catalog Analog outputs 0 Operating temperature range (°C) -40 to 105
WQFN (RTE) 20 9 mm² 3 x 3
  • Stereo low power ADC:
    • 2-channel analog microphones or line-in
  • ADC line and microphone differential and single-ended input performance:
    • PCM1809 dynamic range:
      • Differential Input: 104dB
      • Single-ended Input: 102dB
    • THD+N: –95 dB
  • 2-VRMS differential full-scale input
  • Direct Coupling
    • Wide Input Common Mode support
    • AC/DC Coupling support
  • 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:
    • Controller or target 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
  • Stereo low power ADC:
    • 2-channel analog microphones or line-in
  • ADC line and microphone differential and single-ended input performance:
    • PCM1809 dynamic range:
      • Differential Input: 104dB
      • Single-ended Input: 102dB
    • THD+N: –95 dB
  • 2-VRMS differential full-scale input
  • Direct Coupling
    • Wide Input Common Mode support
    • AC/DC Coupling support
  • 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:
    • Controller or target 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

The PCM1809 is a low power 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 2VRMS full-scale differential signal. The device integrates 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) or I2S audio formats, selectable with the hardware pin level. Additionally, the PCM1809 supports Controller and target mode selection for the audio bus interface operation. These integrated 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 microphone recording applications.

The PCM1809 is specified from –40°C to +105°C, and is offered in a 20-pin WQFN package.

The PCM1809 is a low power 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 2VRMS full-scale differential signal. The device integrates 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) or I2S audio formats, selectable with the hardware pin level. Additionally, the PCM1809 supports Controller and target mode selection for the audio bus interface operation. These integrated 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 microphone recording applications.

The PCM1809 is specified from –40°C to +105°C, and is offered in a 20-pin WQFN package.

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Technical documentation

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Type Title Date
* Data sheet PCM1809 Stereo Channel, 102dB Dynamic Range Audio ADC datasheet PDF | HTML 07 May 2024
EVM User's guide PCM182xEVM, PCM182xQ1EVM User's Guide (Rev. B) PDF | HTML 03 Jun 2024
Certificate PCM1809EVM EU Declaration of Conformity (DoC) 22 May 2024

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Evaluation board

PCM1809EVM — PCM1809 evaluation module

The PCM1809 evaluation module (EVM) allows the user to test the capabilities of PCM1809, a two-channel DC Coupled hardware-controlled high-performance audio ADC, which is intended for applications in voice-activated systems, professional microphones, audio conferencing, portable computing, (...)

User guide: PDF | HTML
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PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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WQFN (RTE) 20 Ultra Librarian

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