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The PCM6140QRGERQ1 is an automotive grade four-channel, 768kHz Burr-Brown™ audio analog-to-digital converter (ADC) from Texas Instruments with 122dB signal-to-noise ratio (SNR). Its operating temperature range is from -40°C to 125°C and it has not been certified by AEC-Q100. The following are its key 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

Performance of ADC circuit and microphone differential input:

Dynamic range (DR)

Support 123dB Dynamic Range Enhancer (DRE)

113dBDRE is disabled

-98dB THD+N

ADC channel summation mode, DR Performance:

116 dB, DRE disabled, 2-channel summation

119dB, DRE disabled, 4-channel summation

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: 0 dB to 42 dB, step 1 dB

Digital volume control: -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 high-pass filter (HPF) and dual four-element digital filter

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 under 1.8V AVDD power supply:

8.5mW/channel, 16kHz sampling rate

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

Overview

The PCM6140QRGERQ1 audio ADC is a multi-channel high-performance ADC that adopts Burr-Brown™ technology. This ADC features a sampling rate ranging from 8kHz to 768kHz and a signal-to-noise ratio (SNR) of 122dB. The PCM6140QRGERQ1 supports both line and microphone inputs, allowing for single-ended and differential input configurations. These ADCs integrate programmable channel gain, digital volume control, microphone bias voltage, phase-locked loop (PLL), programmable high-pass filter, dual four-channel filter and low-latency filter modes. The PCM6140QRGERQ1 device has passed the AEC automotive application certification.

The PCM6140QRGERQ1 audio ADC integrates high-performance functions and can be powered by either 3.3V or 1.8V. This makes the device highly suitable for audio systems in space-constrained far-field microphone recording applications. The operating temperature range of the PCM6140QRGERQ1 audio ADC is -40°C to 125°C, and it is packaged in a 24-pin VQFN. The PCM6140QRGERQ1 audio ADC is used in microphone array systems, voice-controlled digital assistants, teleconferencing systems, and security and monitoring systems.

The target application of PCM6140QRGERQ1

Microphone array system

Voice activation of the digital assistant

Teleconference system

Security and monitoring systems

Performance parameters

Product: PCM6140QRGERQ1

Type: Audio

Number of channels: 4

Resolution (bits) : 16 b, 20 b, 24 b, 32 b

Sampling rate (per second) : 768k

Data interfaces: I2C, I2S, TDM

Power supply voltage source: Single power supply

Voltage - Power supply: 1.7V - 1.9V, 3V - 3.6V, 1.65V - 1.95V, 3V - 3.6V

Operating temperature: -40°C to 125°C

Installation type: Surface mount type

Grade: Automotive grade

Qualification: AEC-Q100

Package/Housing: 24-VQFN

For more information

For the purchase of PCM6140QRGERQ1 audio ADC, please visit www.hkmjd.com.