AD7729ARU

ADCs/DACs - Special Purpose Overview

The AD7729ARU is a monolithic 3 V CMOS dual-channel baseband codec featuring two 15-bit sigma-delta ADCs and a 10-bit auxiliary DAC. It operates with a 13 MHz master clock, providing an output word rate of 270.83 kHz. The device includes on-chip FIR digital filters, offset calibration, and a bandgap voltage reference. It supports differential or single-ended inputs via Baseband (BSPORT) and Auxiliary (ASPORT) serial interfaces. Available in a 28-lead TSSOP package, it functions within an industrial temperature range of –40 °C to +105 °C.

ADCs/DACs - Special Purpose Feature Summary

• Dual 15-bit Sigma-Delta ADCs with integrated 288-tap FIR digital filters
• 10-bit Auxiliary DAC for AGC/AFC applications
• On-chip 1.3 V bandgap voltage reference
• Baseband and Auxiliary Serial Ports (DSP compatible)
• Receive section power-down mode

ADCs/DACs - Special Purpose Applications

• GSM Basestations
• Pagers

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'RU' confirms the 28-lead Thin Shrink Small Outline (TSSOP) package. Confirm the 'A' grade designation ensures operation across the full industrial temperature range of –40 °C to +105 °C. Check current manufacturing status as legacy components may have limited availability.

ADCs/DACs - Special Purpose Selection Notes

Select this component for low-power baseband signal processing requiring simultaneous I/Q channel digitization. Ensure the system provides a 13 MHz master clock input. Verify that the 2 V peak-to-peak ADC signal range and 1.3 V reference voltage align with the sensor interface requirements.

ADCs/DACs - Special Purpose Part Context

The AD7729ARU belongs to the AD7729 family of dual sigma-delta ADCs. The 'ARU' designation specifically identifies the Industrial temperature grade variant housed in the RU-28 (TSSOP) package, distinguishing it from other package options like the SOIC.

ADCs/DACs - Special Purpose Replacement Considerations

No direct public substitute part numbers are documented in the provided source material.