AD7729ARUZ-REEL

ADCs/DACs - Special Purpose Overview

The AD7729ARUZ-REEL is a dual-channel, low-power CMOS device featuring two 15-bit Sigma-Delta ADCs and an auxiliary 10-bit DAC. Designed for 3 V operation, it integrates on-chip offset calibration, FIR digital filters, and a bandgap voltage reference. The I and Q receive channels sample at 13 MSPS with an output word rate of 270.83 kHz. It supports differential or single-ended inputs and includes baseband and auxiliary serial ports for control. The component is housed in a 28-lead TSSOP package.

ADCs/DACs - Special Purpose Feature Summary

• Dual 15-bit Sigma-Delta ADCs with integrated FIR digital filters
• Auxiliary 10-bit DAC for AGC/AFC applications
• On-chip 1.3 V bandgap voltage reference
• Internal offset calibration capability

ADCs/DACs - Special Purpose Applications

• GSM Base Stations
• Pagers

ADCs/DACs - Special Purpose Procurement Notes

Verify the suffix 'REEL' indicates tape-and-reel packaging. Confirm the 'U' designation corresponds to the 28-lead Thin Shrink Small Outline (TSSOP) package. Ensure the 'A' grade meets the -40°C to +105°C industrial temperature range requirements.

ADCs/DACs - Special Purpose Selection Notes

Select this part for applications requiring simultaneous I/Q signal digitization at baseband frequencies. The internal digital filter simplifies external anti-aliasing requirements. Verify that the 3 V supply voltage aligns with the system power architecture.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AD7729 family of dual Sigma-Delta ADCs. It is specifically designed for wireless communication receiver front-ends. The ARUZ variant denotes the industrial temperature range and TSSOP package form factor.

ADCs/DACs - Special Purpose Replacement Considerations

No direct public substitutes are listed in the provided documentation. Evaluate other ADI dual ADCs if pin compatibility is not required.

ADCs/DACs - Special Purpose FAQ

What is the maximum input sampling rate?

The analog front-end samples at 13 MHz.

How is the voltage reference configured?

An on-chip bandgap reference provides 1.3 V. A 0.1 mF capacitor is required from REFCAP to AGND.

What is the settling time for the digital filter?

The filter settling time is typically 47 ms.