AD9115BCPZ

Overview

The AD9115BCPZ is a dual, low-power, 10-bit TxDAC digital-to-analog converter operating at sample rates up to 125 MSPS. It features differential current outputs with adjustable full-scale currents ranging from 2 mA to 20 mA and an output common-mode level adjustable from 0 V to 1.2 V. The device integrates two on-chip auxiliary DACs and operates on flexible power supplies: AVDD/CVDD from 1.7 V to 3.5 V and DVDDIO from 1.7 V to 3.5 V. Power consumption is 232 mW at 125 MSPS with 3.3 V supplies. It utilizes a CMOS interface with single-port operation and is housed in a 40-lead LFCSP package.

Feature Summary

• Dual 10-bit DAC architecture supporting 125 MSPS conversion rates
• Adjustable output common-mode voltage from 0 V to 1.2 V for easy interfacing
• Integrated internal reference providing 1.0 V output
• Two on-chip auxiliary DACs for system calibration

Applications

• Wireless infrastructure base stations
• Picocell and femtocell systems
• Medical instrumentation
• Ultrasound transducer excitation

Procurement Notes

Verify the specific suffix 'BCPZ' corresponds to the RoHS-compliant, lead-free 40-lead LFCSP package variant. Confirm that the ordering code matches the 10-bit resolution version within the AD911x family, as pin compatibility exists across 8-, 12-, and 14-bit variants.

Selection Notes

Select this component when a balance between resolution and power consumption is required for transmit signal paths. Ensure the design supports the 1.8 V to 3.3 V analog supply range. Consider the 11.5 ns settling time and 85 dBc SFDR specifications against system dynamic range requirements.

Part Context

This part belongs to the AD9114/AD9115/AD9116/AD9117 family of TxDAC converters. All members share identical interfaces, packages, and pinouts, allowing for upward or downward selection based on resolution needs without redesigning the PCB layout.

Replacement Considerations

Pin-compatible alternatives include the AD9114 (8-bit), AD9116 (12-bit), and AD9117 (14-bit). Verify that the resolution difference meets application requirements before substitution.