AD7011ARS-REEL

Overview

The AD7011ARS-REEL is a complete low-power CMOS pi/4 DQPSK modulator designed for baseband conversion of I and Q transmit waveforms in accordance with the TIA IS-54 standard. It operates on a single +5 V supply, featuring on-chip root-raised cosine Tx filters with alpha = 0.35, two 10-bit D/A converters, and fourth-order reconstruction filters. The device provides differential analog outputs, on-chip ramp up/down power control, and Tx offset calibration. Typical power dissipation is 30 mW, with a power-down mode consuming less than 10 uA.

Feature Summary

• Integrates a pi/4 DQPSK modulator with dual 10-bit digital-to-analog converters and fourth-order reconstruction filters for baseband signal processing.
• Supports dual-mode operation including an analog bypass mode and includes on-chip voltage reference and power control mechanisms.
• Features on-chip transmission offset calibration and root-raised cosine transmit filters to ensure signal integrity.

Applications

• American Digital Cellular Telephony systems
• American Analog Cellular Telephony systems

Procurement Notes

Verify the specific suffix 'ARS' indicates the SSOP package variant when sourcing. Confirm that the '-REEL' designation corresponds to tape-and-reel packaging requirements for automated assembly processes. Ensure compatibility with single +5 V supply constraints during integration planning.

Selection Notes

Select this component for applications requiring compliance with TIA IS-54 standards for baseband modulation. Consider its low-power characteristics and integrated filter design for efficient signal chain implementation. Evaluate the need for differential analog outputs and on-chip calibration features against system complexity requirements.

Part Context

This part belongs to the AD7011 series of baseband modulators from Analog Devices. It is functionally related to the AD7010 and AD7013, which serve similar or complementary roles in cellular telephony baseband processing. The AD7011 specifically addresses the transmit path modulation requirements.

Replacement Considerations

The AD7010 is listed as a similar part number within the same family. Verify functional equivalence and pin compatibility before substitution.