AD5423BCPZ

Overview

The AD5423BCPZ is a single-channel, 16-bit digital-to-analog converter (DAC) from Analog Devices Inc., housed in a 32-lead, 5 mm × 5 mm LFCSP package. It provides both current and voltage outputs on the shared VIOUT terminal. The device supports wide supply ranges, with AVDD1 and AVSS spanning −33 V to +33 V, and VLOGIC operating between 1.71 V and 5.5 V. Key electrical specifications include a settling time of 12 µs for a 10 V step, an integral nonlinearity (INL) of ±0.006% FSR, and a differential nonlinearity (DNL) of ±1 LSB. It features an integrated 12-bit ADC for diagnostics and HART connectivity via the CHART pin.

Feature Summary

• 16-bit resolution with guaranteed monotonicity across all output ranges.
• Integrated 12-bit diagnostic ADC for background monitoring of supplies and temperature.
• HART protocol connectivity enabled through the dedicated CHART input pin.
• Versatile 4-wire SPI interface supporting clock rates up to 50 MHz with optional CRC and watchdog timer.

Applications

• Process control systems requiring high-precision analog outputs.
• Actuator control loops in industrial automation.
• Programmable logic controllers (PLC) and distributed control systems (DCS).
• HART network-enabled field instrumentation.

Procurement Notes

Verify the specific suffix 'BCPZ' against the manufacturer's ordering guide to confirm the industrial temperature range (-40°C to +115°C) and lead-free RoHS compliance status. Ensure that the power supply configuration matches the required unipolar or bipolar operation, as AVSS must be connected appropriately for negative voltage ranges.

Selection Notes

Select the AD5423BCPZ when a single channel with both current and voltage capability is needed. Use external RSET resistors between RA and RB pins to improve current output temperature drift performance compared to internal settings. Ensure the load impedance does not exceed the specified headroom and footroom requirements for the chosen output range.

Part Context

This component belongs to the AD5423 family of precision DACs. Companion products include the AD5758 and AD5422 for similar functionality, while the AD5700 serves as a dedicated HART modem. External references like the ADR431 can be used if higher precision than the internal 2.5 V reference is required.

Replacement Considerations

The AD5422 is a related product within the same family. Verify pin compatibility and register map differences before substitution. No other direct public substitutes are confirmed in the provided documentation.