TSDP1808X1NEGIZAX

Overview

The TSDP1808X1NEGIZAX is an ultra low-power, high-performance octal PDM to linear PCM converter manufactured by Tempo Semiconductor. It supports Digital MEMS Microphone (DMIC) inputs with sample rates up to 6.144MHz and provides output sampling rates from 8kHz to 384kHz. The device features a single 1.8V supply for both IOVDD and DVDD, with IOVDD also supporting 3.3V. It delivers greater than 142dB SNR/DNR/THD+N performance within the 20Hz to 20kHz bandwidth. Operating temperatures range from -40°C to +85°C in a 3x3mm, 20-lead QFN package.

Feature Summary

• Octal PDM to Linear PCM conversion with >142dB SNR/DNR/THD+N
• Supports I2S, Left-Justified, and TDM output formats with configurable word lengths of 16, 24, or 32 bits
• Configurable oversampling modes ranging from 8x to 256x via OS_MODE pins
• Ultra-low standby power consumption of less than 1uA when SCLK signal is stopped

Applications

• Digital microphone arrays for smart speakers and screens
• Voice assistance enabled devices
• Audio and video conferencing systems
• Augmented and virtual reality systems
• Far-field voice pickup applications

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm temperature grade and packaging type. The 'I' suffix indicates Industrial temperature range (-40C to 85C), while 'G' denotes Tray packaging. Confirm availability through authorized distributors as lead times may vary.

Selection Notes

Select this component for designs requiring high-fidelity conversion of multiple DMICs to linear PCM. Ensure the host processor supports the desired output format (I2S, LJ, or TDM) and clock ratios. Verify that the system can accommodate the required SCLK to LRCLK ratios based on the chosen oversampling mode and word length.

Part Context

This part belongs to the TSDP18xx family of audio special purpose converters. It is designed to replace discrete solutions by integrating decimation filtering and format conversion into a single chip, reducing board space and BOM cost for multi-microphone array applications.

Replacement Considerations

Direct replacements within the same series include TSDP1808X1NEGXZAX for commercial temperature grades. Cross-vendor substitutes require verification of pin compatibility, power requirements, and digital interface timing specifications.