AD5737ACPZ

Overview

The AD5737ACPZ is a quad-channel, 12-bit current output digital-to-analog converter (DAC) from Analog Devices. It features dynamic power control via an on-chip DC-to-DC boost converter to minimize thermal dissipation. The device supports HART protocol connectivity through dedicated CHART pins and offers user-programmable offset and gain adjustments. It operates with analog supplies from 9 V to 33 V and digital supplies from 2.7 V to 5.5 V. Key electrical specifications include a maximum total unadjusted error (TUE) of ±0.1% FSR with external RSET, a settling time of 15 µs, and a versatile 3-wire serial interface compatible with SPI, QSPI, and Microwire standards.

Feature Summary

• Quad-channel 12-bit resolution with guaranteed monotonicity
• Integrated dynamic power control using on-chip DC-to-DC converters for thermal management
• HART network connectivity enabled by dedicated CHART input pins per channel
• User-programmable digital offset and gain correction registers

Applications

• Process control systems
• Actuator control loops
• Programmable Logic Controllers (PLCs)
• HART network connectivity interfaces

Procurement Notes

Verify the specific suffix 'ACPZ' corresponds to the LFCSP-64 package and industrial temperature range (-40°C to +105°C). Confirm that the ordering part number matches the exact revision required for your design, as datasheet revisions may update timing or thermal parameters. Ensure compatibility with the 3-wire serial interface voltage levels (DVDD 2.7 V to 5.5 V) before procurement.

Selection Notes

Select this component when high accuracy (±0.1% TUE) and HART compliance are required in a multi-channel configuration. The internal DC-to-DC converters reduce external component count but require careful layout of SWx and VBOOST_x pins. For applications requiring lower power consumption without HART, consider companion products like the AD5735. Verify that the load impedance does not exceed the compliance voltage limits defined by the VBOOST_x supply rails.

Part Context

The AD5737 belongs to the AD5737 product family, which includes variants such as the AD5755, AD5757, and AD5735. These devices share similar architectures but differ in channel count, resolution, and feature sets. The AD5737 is specifically designed for industrial applications requiring robust HART communication alongside precise analog output control.

Replacement Considerations

Direct replacements within the same family include the AD5755, AD5757, and AD5735. When substituting, verify pinout compatibility and ensure that the replacement device supports the required HART connectivity and dynamic power control features. Check if the target application requires the specific 12-bit resolution and 4 mA to 20 mA output ranges provided by the AD5737.