AD5422BREZ

Digital To Analog Converters Overview

The AD5422BREZ is a single-channel, 16-bit serial input digital-to-analog converter (DAC) from Analog Devices Inc., housed in a 24-lead TSSOP_EP package. It integrates a programmable current source and a buffered voltage output designed for industrial process control applications. The device operates with an AVDD supply range of 10.8 V to 40 V and supports unipolar or bipolar power configurations. Key electrical specifications include a typical total unadjusted error (TUE) of ±0.01% FSR for both current and voltage modes, with output drifts of ±3 ppm/°C and ±2 ppm/°C respectively. It features a flexible SPI/MICROWIRE-compatible serial interface, on-chip fault detection, and an asynchronous clear function.

Digital To Analog Converters Feature Summary

• 16-bit resolution with guaranteed monotonicity and ±0.01% FSR typical total unadjusted error (TUE).
• Programmable current output ranges: 4 mA to 20 mA, 0 mA to 20 mA, or 0 mA to 24 mA.
• Programmable voltage output ranges: 0 V to 5 V, 0 V to 10 V, ±5 V, or ±10 V, with 10% overrange capability.
• Integrated 5 V reference with maximum 10 ppm/°C temperature coefficient and optional regulated DVCC output.

Digital To Analog Converters Applications

• Process controls
• Actuator controls
• Programmable Logic Controllers (PLC)

Digital To Analog Converters Procurement Notes

Verify the ordering suffix BREZ corresponds to the 24-lead TSSOP_EP package variant. Confirm the B version grade if strict ±0.01% FSR TUE accuracy at 25°C is required, as A versions have wider error bounds. Ensure the design accommodates the specified AVDD and AVSS supply ranges for the intended industrial environment.

Digital To Analog Converters Selection Notes

Select the AD5422BREZ when 16-bit precision and integrated voltage/current outputs are needed in a TSSOP package. Note that HART connectivity via the CAP2 pin is only available in the LFCSP package; this TSSOP variant lacks that specific feature. Choose this part over the AD5412 if 16-bit resolution is mandatory rather than 12-bit.

Digital To Analog Converters Part Context

The AD5422 is part of the AD5412/AD5422 family of low-cost, precision DACs. It is pin-compatible with the AD5412 (12-bit), AD5420 (16-bit current only), and AD5410 (12-bit current only). The BREZ suffix specifically denotes the TSSOP_EP package option within this product line.

Digital To Analog Converters Replacement Considerations

The AD5412 serves as a lower-resolution alternative. For current-only applications, the AD5420 is a compatible substitute. Verify package compatibility when replacing, as the AD5422BREZ uses a TSSOP_EP package, whereas other family members may use LFCSP.

Digital To Analog Converters FAQ

Does the AD5422BREZ support HART communication?

No, HART signal coupling via the CAP2 pin is only supported in the LFCSP package version. The TSSOP_EP package (BREZ suffix) does not include this pin.

What is the maximum capacitive load the voltage output can drive?

The voltage output can drive up to 1 µF of capacitive load when an external 4 nF compensation capacitor is connected between the CCOMP and VOUT pins.

How is the asynchronous clear function configured?

The CLEAR pin sets the output to zero-scale or midscale voltage, or the low end of the selected current range. The CLEAR SELECT pin determines whether the voltage output clears to zero-scale or midscale code.