This is an AD73422 dual low power CMOS analog front end with DSP microcomputer produced by Analog Devices
The AD73422 is a single integrated device that incorporates a dual analog front end (AFE) and a microcomputer designed for high-speed numeric processing. The AFE section features two 16-bit A/D converters and two 16-bit D/A converters, suitable for speech and telephony applications including compression and synthesis.
The internal DSP engine combines the ADSP-2100 family base architecture with on-chip program and data memory. Available in an 80K byte or 40K byte configuration depending on the suffix (-80 or -40), the device supports a maximum sample rate of 64 kS/s and operates from a single supply voltage.
| A/D Converters | Two 16-Bit A/D Converters |
|---|---|
| D/A Converters | Two 16-Bit D/A Converters |
| Maximum Sample Rate | 64 kS/s |
| ADC SNR | 78 dB |
| DAC SNR | 77 dB |
| Instruction Cycle Time | 19 ns @ 3.3 V |
| Sustained Performance | 52 MIPS |
| Operating Temperature Range | -20°C to +85°C |
The maximum sample rate for the device is 64 kS/s.
The low group delay characteristic is typically 25 microseconds per ADC channel.