PCM1822QRTERQ1

ADCs/DACs - Special Purpose Overview

The PCM1822QRTERQ1 is an automotive-grade stereo-channel audio analog-to-digital converter (ADC) from Texas Instruments. It supports simultaneous sampling of two analog channels with a 32-bit resolution and sample rates up to 192 kHz. The device features a dynamic range of 117 dB with the Dynamic Range Enhancer enabled, and a THD+N of -95 dB. It accepts single-ended or differential line and microphone inputs with a 1-V RMS full-scale signal. Powered by a single 3.3 V supply, it integrates a phase-locked loop (PLL), DC removal high-pass filter, and digital/analog regulators. The component operates within a temperature range of –40°C to +125°C and is housed in a 20-pin WQFN package.

ADCs/DACs - Special Purpose Feature Summary

• Stereo delta-sigma ADC with 117-dB dynamic range (DRE enabled) and -95 dB THD+N
• Integrated PLL, DC removal HPF, and on-chip voltage regulators for single-supply operation
• Flexible serial interface supporting TDM or I2S formats with master/slave selection via hardware pins
• Automotive qualification (AEC-Q100) with extended operating temperature range of –40°C to +125°C

ADCs/DACs - Special Purpose Applications

• Automotive Active Noise Cancellation
• Automotive Head Unit
• Rear Seat Entertainment Systems
• Digital Cockpit Processing Units
• Telematics Control Units

ADCs/DACs - Special Purpose Procurement Notes

Verify the Q1 suffix indicates AEC-Q100 automotive qualification and the RTE suffix denotes the 20-pin WQFN package with a 3.00 mm x 3.00 mm body size. Confirm that the specific revision matches the production data status. Ensure compatibility with the required 3.3 V AVDD and 1.8 V or 3.3 V IOVDD supplies during sourcing.

ADCs/DACs - Special Purpose Selection Notes

Select this component for space-constrained automotive audio systems requiring far-field microphone recording capabilities. It is suitable where hardware pin control is preferred over I2C configuration. Compare against PCM1820-Q1 and PCM1821-Q1 if different input types or channel counts are needed, as they share pin-to-pin compatibility.

ADCs/DACs - Special Purpose Part Context

The PCM1822-Q1 belongs to the Burr-Brown audio ADC family designed for cost-sensitive applications. It serves as a drop-in replacement for the PCM1820-Q1 and PCM1821-Q1 in compatible designs. The device simplifies system architecture by integrating necessary clocking and filtering components directly onto the silicon die.

ADCs/DACs - Special Purpose Replacement Considerations

The PCM1820-Q1 and PCM1821-Q1 are pin-to-pin, package, and control register compatible replacements. Verify that the specific application requirements for input impedance and dynamic range align with the target substitute's specifications before swapping.