AD5423

RECOMMENDED FOR NEW DESIGNS

Single Channel, 16-Bit Current/Voltage Output DAC with HART Connectivity

Analog Devices AD5423 Product Info

10 February 2026 8

Features

16-bit resolution and monotonicity
Current or voltage output available on a single terminal
Current output ranges: 0 mA to 20 mA, 4 mA to 20 mA, 0 mA to 24 mA, ±20 mA, ±24 mA, and −1 mA to +22 mA
Voltage output ranges (with 20% overrange): 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V

User programmable offset and gain
Advanced on-chip diagnostics, including a 12-bit ADC
On-chip reference
−40°C to +115°C temperature range
32-Lead, 5 mm × 5 mm LFCSP package

Part details & applications

The AD5423 is a single-channel, voltage and current output digital-to-analog converter (DAC) that operates with a power supply range from −33 V minimum on AV_SS to +33 V maximum on AV_DD1. The C_HART pin enables a Highway Addressable Remote Transducer^® (HART) signal to be coupled on the current output.

The AD5423 uses a versatile, 4-wire, serial peripheral interface (SPI) that operates at clock rates of up to 50 MHz and is compatible with standard SPI, QSPI^™, MICROWIRE^™, digital signal processor (DSP), and microcontroller interface standards. The interface also features an optional SPI cyclic redundancy check (CRC) and a watchdog timer (WDT). The AD5423 offers improved diagnostic features from earlier versions of similar DACs, such as an integrated, 12-bit diagnostic analog-to-digital converter (ADC).

Product Highlights

16-bit performance.
Range of diagnostic features.
Integrated 12-bit monitoring ADC.
HART compliant.

Applications

Process control
Actuator control
Channel isolated analog outputs
Programmable logic controller (PLC) and distributed control systems (DCS) applications
HART network connectivity

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