AD9114BCPZ

Overview

The AD9114BCPZ is a dual-channel, 8-bit TxDAC digital-to-analog converter manufactured by Analog Devices Inc. It supports sample rates up to 125 MSPS and operates on a single supply voltage ranging from 1.7 V to 3.5 V. The device features differential current outputs with adjustable common-mode levels between 0 V and 1.2 V. Key performance metrics include an output settling time of 11.5 ns, spurious-free dynamic range (SFDR) of 86 dBc at 1 MHz output, and noise spectral density of -131 dBc/Hz. Power consumption is 220 mW at 125 MSPS with a 3.3 V analog supply.

Feature Summary

• Dual-channel architecture with 8-bit resolution and 125 MSPS maximum update rate
• Low power operation: 220 mW at 125 MSPS (3.3 V), <3 mW in sleep mode
• Integrated internal reference and two auxiliary DACs for calibration
• Flexible interface supporting LVCMOS clock input and SPI configuration

Applications

• Wireless infrastructure base stations
• Medical instrumentation and ultrasound transducer excitation
• Portable signal generators and arbitrary waveform generators

Procurement Notes

Verify the specific suffix 'BCPZ' against the manufacturer's ordering guide to confirm package type and temperature grade. Ensure compatibility with the required operating voltage range of 1.7 V to 3.5 V for both analog and digital supplies. Confirm that the 40-lead LFCSP footprint matches the PCB layout constraints.

Selection Notes

Select the AD9114BCPZ when 8-bit resolution is sufficient for the application, as higher-resolution variants like the AD9115/16/17 share the same pinout. Consider the low power dissipation profile for battery-operated or thermally constrained designs. Verify that the 125 MSPS data rate meets the Nyquist requirements for the target signal bandwidth.

Part Context

The AD9114 belongs to the AD9114/AD9115/AD9116/AD9117 family of dual low-power TxDAC converters. These devices are pin-compatible, allowing for design flexibility based on resolution needs without changing the board layout. The AD9114 specifically offers the lowest resolution (8-bit) within this group, optimized for cost-sensitive applications requiring moderate dynamic performance.

Replacement Considerations

Pin-compatible alternatives within the same family include the AD9115 (10-bit), AD9116 (12-bit), and AD9117 (14-bit). These parts offer improved linearity and SFDR but may have different power consumption characteristics. Verify that the system can accommodate any changes in full-scale current settings or calibration requirements.