AD9743BCPZ

Digital To Analog Converters Overview

The AD9743BCPZ is a dual-channel, 10-bit digital-to-analog converter (DAC) from Analog Devices, operating at sample rates up to 250 MSPS. It features low noise and intermodulation distortion, with a typical Spurious Free Dynamic Range (SFDR) of 80 dBc at 20 MHz output. The device includes an internal 1.2 V precision reference, programmable differential current outputs ranging from 8.6 mA to 31.7 mA, and auxiliary 10-bit DACs for offset nulling. Powered by 1.8 V and 3.3 V supplies, it dissipates approximately 345 mW at maximum performance and is housed in a 72-lead Lead Frame Chip Scale Package (LFCSP).

Digital To Analog Converters Feature Summary

• Dual 10-bit resolution with 250 MSPS sampling rate.
• Low noise and intermodulation distortion (Typical SFDR: 80 dBc @ 20 MHz).
• Programmable differential analog current outputs (8.6 mA to 31.7 mA).
• Internal 1.2 V precision reference voltage source.

Digital To Analog Converters Applications

• Wireless infrastructure: WCDMA, CDMA2000, TD-SCDMA, WiMAX.
• Wideband communications: LMDS/MMDS, point-to-point.
• Instrumentation: RF signal generators, arbitrary waveform generators.

Digital To Analog Converters Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm package type and temperature range. Ensure compatibility with the system's power supply rails (1.8 V and 3.3 V) and SPI interface requirements. Confirm that the 72-lead LFCSP footprint matches the PCB layout design.

Digital To Analog Converters Selection Notes

Select this component when a dual-channel DAC with 10-bit resolution and high-speed operation up to 250 MSPS is required. Consider the AD9741 or AD9745 if different resolution options are needed, as they share pin compatibility. Evaluate the need for auxiliary DACs for external offset nulling and ensure the application can accommodate the specified power dissipation of 345 mW.

Digital To Analog Converters Part Context

The AD9743BCPZ belongs to the AD974x family of high dynamic range dual DACs, which also includes the AD9741 (8-bit), AD9745 (12-bit), AD9746 (14-bit), and AD9747 (16-bit). These devices are pin-compatible and designed for direct conversion transmit applications, offering seamless interfacing with analog quadrature modulators.

Digital To Analog Converters Replacement Considerations

Pin-compatible alternatives within the same family include the AD9741, AD9745, AD9746, and AD9747. Verify that the resolution difference aligns with system requirements before substitution.

Digital To Analog Converters FAQ

What is the typical Spurious Free Dynamic Range (SFDR) of the AD9743BCPZ?

The typical SFDR is 80 dBc at a 20 MHz output frequency with a 250 MSPS DAC clock.

Does the AD9743BCPZ have an internal reference?

Yes, it includes an internal 1.2 V precision reference voltage source.

What is the full-scale output current range?

The differential analog current outputs are programmable from 8.6 mA to 31.7 mA full scale.