PCM1865DBTR

ADCs/DACs - Special Purpose Overview

The PCM1865DBTR is a four-channel, software-controlled audio analog-to-digital converter (ADC) from Texas Instruments. It utilizes a delta-sigma modulation architecture with 24-bit resolution and supports sampling rates up to 192 kHz. The device features a typical signal-to-noise ratio (SNR) of 110 dB and a dynamic range of 110 dB, ensuring high-fidelity audio capture. Integrated components include a universal analog front end, programmable gain amplifiers, anti-aliasing filters, and digital filtering units. Communication is managed via I²C or SPI interfaces for register configuration, while audio data is transmitted through standard formats like I²S. The component operates within a temperature range of -40°C to +125°C and is housed in a 30-pin TSSOP package.

ADCs/DACs - Special Purpose Feature Summary

• Four independent channels with 24-bit resolution and 110 dB SNR
• Software-configurable via I²C/SPI control interfaces
• Integrated universal analog front end and programmable gain amplifiers
• Supports sampling rates from 8 kHz to 192 kHz

ADCs/DACs - Special Purpose Applications

• Multi-channel professional audio recording systems
• High-end home theater and surround sound receivers
• Intelligent conference microphone arrays
• Industrial acoustic monitoring equipment

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'DBTR' corresponds to the TSSOP-30 package and reel packaging format as listed in official distributor catalogs. Confirm RoHS compliance status and moisture sensitivity level prior to procurement. Ensure the supplier provides valid traceability documentation for the Texas Instruments manufacturing batch.

ADCs/DACs - Special Purpose Selection Notes

Select this model when four synchronized audio inputs are required with high dynamic range performance. Compare against PCM1864 if lower SNR is acceptable or PCM1861/PCM1863 for stereo configurations. Verify that the host system supports the necessary I²C/SPI control lines and I²S/TDM data interfaces for proper integration.

ADCs/DACs - Special Purpose Part Context

This part belongs to the PCM186x series of high-performance audio ADCs. It shares the same package and control interface structure with siblings like PCM1864 and PCM1862 but offers superior noise performance compared to the 103 dB variants. The DBTR suffix indicates surface-mount packaging in a tape-and-reel configuration suitable for automated assembly.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible alternatives within the same family include PCM1864DBTR (103 dB SNR) and PCM1862DBTR (stereo, 103 dB SNR). For higher channel counts, consider PCM1870 series devices. Verify register compatibility when substituting with other PCM186x variants.