Welcome Here  Shenzhen Mingjiada Electronics Co., Ltd.

The PCM3140QRGERQ1 is a high-performance audio analog-to-digital converter (ADC) produced by Texas Instruments. It supports multi-channel synchronous sampling and is suitable for pulse density modulation (PDM) microphone input scenarios.

Product features

Multi-channel high-performance ADC

4-channel analog microphone or line input

8-channel digital PDM microphone or combination of analog and digital microphones

ADC line and microphone differential input performance:

Dynamic range (DR) : 106dB

-98 dB THD+N

ADC channel summation mode, DR Performance:

109 dB, 2-channel summation

The total of 112dB4 channels

ADC input voltage

Differential, 2VRMS full-scale input

Single-ended, 1VRMS full-scale input

The ADC sampling rate (fS) ranges from 8kHz to 768kHz

Programmable channel Settings

Channel gain from 0dB to 42dB, 1dB step

Digital volume control from -100dB to 27dB

Gain calibration with a resolution of 0.1 dB

Phase calibration with a resolution of 163ns

Programmable microphone bias or power supply voltage generation

Selection of low-latency signal processing filters

Programmable HPF and dual four-channel digital filters

Automatic Gain Controller (AGC

I2C or SPI control

Integrated high-performance audio PLL

Automatic clock divider setting configuration

Audio Serial data interface

Format: TDM, I2S or left-aligned (LJ)

Word length: 16 characters, 20 characters, 24 characters or 32 characters

Controller or target interface

Operate on a single power supply of 3.3V or 1.8V

It operates on a 3.3V or 1.8V I/O power supply

Power consumption of 1.8V AVDD power supply:

It is 8.5mW per channel at a sampling rate of 16kHz

It is 9.2mW per channel at a sampling rate of 48kHz

Block diagram of PCM3140QRGERQ1

Description

The PCM3140QRGERQ1 audio ADC is a four-channel 768kHz Burr-Brown™ audio ADC with a signal-to-noise ratio (SNR) of 106dB. These audio ADCs support line and microphone inputs, allowing for both single-ended and differential input configurations. The PCM3140QRGERQ1 ADC also supports simultaneous sampling of up to four analog channels or eight digital channels for pulse density modulation (PDM) microphone inputs.

These high-performance audio ADCs can be powered by a single supply of 3.3V or 1.8V. This makes the device an excellent choice for audio systems with limited space in far-field microphone recording applications. The PCM3140QRGERQ1 device meets the requirements of automotive applications.

The PCM3140QRGERQ1 ADC integrates programmable channel gain, digital volume control, programmable microphone bias voltage, phase-locked loop (PLL), programmable high-pass filter, dual four-channel filter and low-latency filter mode. The operating temperature range of these audio ADCs is from -40°C to 125°C, and they are packaged in a 24-pin VQFN. The PCM3140QRGERQ1 ADC is an ideal choice for microphone array systems, voice-controlled digital assistants, teleconferencing systems, as well as security and monitoring systems.

Application scenarios

Microphone array system

Voice activation of the digital assistant

Teleconference system

Security and monitoring systems

Supply information

For the purchase of TI PCM3140QRGERQ1 ADC, please visit www.hkmjd.com.