AD73411BB-40

Overview

The AD73411BB-40 is a low-power analog front end with an integrated DSP microcomputer, designed for speech and telephony applications. It combines a single-channel 16-bit sigma-delta ADC and DAC with an ADSP-2100 base architecture processor. The device operates on a 3.0 V to 3.6 V supply and supports maximum sample rates of 64 kS/s. Key performance metrics include 76 dB ADC SNR and 77 dB DAC SNR within the voiceband. The DSP section features a 19 ns instruction cycle time at 3.3 V, delivering 52 MIPS sustained performance. The BB-40 variant integrates 40 Kbytes of on-chip RAM, configured as 8K words of program memory and 8K words of data memory.

Feature Summary

• Integrated 16-bit ADC and DAC with 76/77 dB SNR and programmable gains (38 dB input, 21 dB output).
• ADSP-2100 compatible DSP core with 19 ns instruction cycle time and 52 MIPS sustained performance.
• 40 Kbytes on-chip RAM (8K words PM, 8K words DM) in the AD73411-40 configuration.
• Programmable sampling rates of 64, 32, 16, and 8 kHz via SPORT2 interface.

Applications

• Low bit rate, high-quality speech compression.
• Speech enhancement, recognition, and synthesis systems.
• Single or multichannel active noise control applications.
• Telephony signal processing modules.

Procurement Notes

Verify the specific suffix 'BB-40' corresponds to the 40 Kbyte memory configuration and industrial temperature range (-20°C to +85°C). Confirm the 119-ball PBGA package option matches the B-119 designation. Ensure power supply requirements align with the specified 3.0 V to 3.6 V range for both AVDD and DVDD pins.

Selection Notes

Select the AD73411BB-40 over the -80 variant when system code size fits within 40 Kbytes of on-chip memory. Consider the 119-ball PBGA package for space-constrained designs requiring surface-mount assembly. Verify that the 64 kS/s maximum sample rate meets the bandwidth requirements for the target audio or telephony application.

Part Context

The AD73411 series merges Analog Devices' analog front-end expertise with their DSP technology. It serves as a highly integrated solution for voice processing, reducing component count by combining conversion, filtering, and computation on a single die. The device is part of the broader ADSP-2100 family ecosystem, ensuring software compatibility with existing development tools.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.