AD5757ACPZ-REEL7

Overview

The AD5757ACPZ-REEL7 is a quad-channel, 16-bit serial input digital-to-analog converter (DAC) with current outputs. It operates from a power supply range of 10.8 V to 33 V and features on-chip dynamic power control via a DC-to-DC boost converter to regulate output driver voltage between 7.4 V and 29.5 V. The device supports current output ranges of 0 mA to 24 mA, 0 mA to 20 mA, or 4 mA to 20 mA. It includes an internal reference with ±10 ppm/°C maximum drift, user-programmable offset and gain, and HART connectivity through dedicated CHART pins. The part utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, DSP, and microcontroller standards.

Feature Summary

• 16-bit resolution with guaranteed monotonicity and ±0.05% maximum total unadjusted error (TUE).
• On-chip dynamic power control using a DC-to-DC boost converter for thermal management.
• Integrated HART connectivity with dedicated CHART pins for each channel.
• Versatile 3-wire serial interface supporting clock rates up to 30 MHz with optional CRC-8 packet error checking.

Applications

• Process control systems
• Actuator control
• Programmable logic controllers (PLCs)
• HART network connectivity

Procurement Notes

Verify the package type corresponds to the LFCSP (Lead Frame Chip Scale Package) indicated by the 'PZ' suffix in the model number. Confirm that the reel packaging matches the 'REEL7' designation. Ensure the operating environment stays within the specified -40°C to +105°C industrial temperature range. Check that the system power supply adheres to the 10.8 V to 33 V AVDD requirement.

Selection Notes

Select this component when multiple isolated current loops are required in a compact form factor. The internal DC-to-DC converters reduce external component count compared to discrete solutions. Consider the ±0.05% TUE specification for high-precision applications. Verify compatibility with the host controller's serial interface timing requirements, specifically the 30 MHz SCLK limit and SYNC signal constraints.

Part Context

The AD5757 belongs to Analog Devices' family of precision DACs designed for industrial automation. It complements companion products such as the AD5755 series for different channel counts or performance levels. For HART communication, it pairs with modems like the AD5700 if external processing is preferred, though the AD5757 integrates the capability directly. External references like the ADR445 can be used to further enhance stability if needed.

Replacement Considerations

Public confirmed substitute part numbers: AD5755-1, AD5755.