Analog Devices Inc. AD5748ACPZ

Overview

AD5748ACPZ from Analog Devices is a single-channel, precision industrial current/voltage output driver with hardware- or software-programmable ranges. It delivers ±0.15% FSR TUE for current outputs (0–21 mA, 4–21 mA) and ±0.05% FSR TUE for voltage outputs (0–5 V, 0–10.5 V, ±10.5 V), operates from ±12 V to ±24 V analog supplies, and features on-chip fault detection and PEC error checking-used in PLC analog output modules and process control actuators.

For engineers reviewing the AD5748ACPZ datasheet, AD5748ACPZ pinout, AD5748ACPZ application, or AD5748ACPZ equivalent, key selection criteria include programmable dual-mode (hardware/software) configuration, ±10.5 V bipolar voltage capability, 32-lead LFCSP package thermal performance, and integrated open/short-circuit protection for loop reliability in harsh industrial environments.

Technical Context

The AD5748ACPZ implements a buffered analog input architecture (0 V to 4.096 V) conditioned internally to generate precise current or voltage outputs. Its dual-path output stage supports independent current sourcing (IOUT pin) and voltage buffering (VOUT pin), each with dedicated sense inputs (VSENSE+, VSENSE−) and compliance up to AVDD − 2.75 V.

It integrates SPI/MICROWIRE-compatible serial interface with optional CRC-8 packet error checking (PEC), asynchronous CLEAR for zero/midscale reset, and HW SELECT pin to configure power-up behavior between software mode (SPI-controlled ranges) and hardware mode (pin-strapped ranges). Fault monitoring includes open-circuit (IFAULT), short-circuit (VFAULT), and overtemperature (TEMP) alerts via open-drain outputs.

Key Specifications

Pinout & Package

AD5748ACPZ uses a 32-lead, 5 mm × 5 mm LFCSP package with exposed paddle electrically connected to AVSS. Pin functions are mode-dependent (software/hardware), with shared pins like SDO/VFAULT, FAULT/TEMP, and NC/IFAULT serving distinct roles per configuration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar industrial output driver applications.

Compared with AD5748ACPZ, AD5750ACPZ offers reduced feature set and lower fault coverage but identical footprint and basic range programming, while XTR300IPWPR serves a fundamentally different architecture (loop-powered vs. externally powered) and lacks digital configurability entirely.

Availability

AD5748ACPZ is available at Aetrix Electronics and suitable for process control transmitters, PLC analog output modules, and industrial actuator drivers requiring stable component supply, long-term lifecycle assurance, and traceable industrial-grade sourcing.

Supply support for AD5748ACPZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with deep expertise in precision instrumentation and industrial interface solutions.

The AD5748ACPZ belongs to Analog Devices' industrial current/voltage output driver product line, designed specifically for high-accuracy, fault-resilient analog output stages in programmable logic controllers, distributed control systems, and smart field instruments.

FAQ

What output voltage ranges does the AD5748ACPZ support?

The AD5748ACPZ supports three programmable voltage output ranges: 0 V to 5 V, 0 V to 10.5 V, and ±10.5 V. These are selected either via SPI register writes in software mode or through hardware pin strapping (R0–R3) in hardware mode. The ±10.5 V range requires minimum ±1.3 V headroom on AVDD/AVSS, and all ranges maintain ±0.05% FSR total unadjusted error at 25°C. The AD5748ACPZ achieves this using an internal scaling amplifier driven by a buffered 0–4.096 V analog input.

How does the AD5748ACPZ handle current output fault conditions?

The AD5748ACPZ detects IOUT open-circuit faults and reports them via the FAULT/TEMP pin in software mode or NC/IFAULT pin in hardware mode, both asserting low on detection. It also monitors VOUT short-circuit faults using the SDO/VFAULT pin. These open-drain alerts require external pull-up resistors and integrate directly into PLC watchdog logic. The AD5748ACPZ does not auto-recover; fault status must be cleared via SPI or RESET pin. No internal current limiting is applied during open-circuit events-the output remains at programmed level until fault is acknowledged.

Can the AD5748ACPZ operate with a single analog supply?

No, the AD5748ACPZ requires dual analog supplies: AVDD (+12 V to +24 V, ±10%) and AVSS (−12 V to −24 V, ±10%). This bipolar supply is mandatory to support its ±10.5 V voltage output range and proper biasing of the current output stage. The digital supply DVCC (2.7 V to 5.5 V) is independent. Attempting single-supply operation violates absolute maximum ratings and will result in undefined behavior or damage. The AD5748ACPZ specification explicitly defines all performance parameters under dual-rail conditions.

What is the role of the HW SELECT pin on the AD5748ACPZ?

The HW SELECT pin determines the AD5748ACPZ's configuration mode at power-up: logic low selects software mode (SPI-controlled range selection and register access), while logic high selects hardware mode (range and function determined by R0–R3 pin states). In software mode, pins like SDO/VFAULT and FAULT/TEMP serve digital interface/fault roles; in hardware mode, they become dedicated fault indicators. The AD5748ACPZ retains its full functionality in both modes but changes pin multiplexing and initialization behavior accordingly.

Does the AD5748ACPZ support HART communication?

Yes, the AD5748ACPZ supports HART communication indirectly by enabling the 4–21 mA current range, which provides 1 mA of headroom above 20 mA for HART's 1 mA peak-to-peak frequency-shift keying signal. Its low output impedance (<0.12 Ω for voltage, high-Z for current), fast settling time (≤8.5 µs), and integrated PEC error checking on the SPI interface help maintain signal integrity during HART bursts. However, the AD5748ACPZ itself does not implement the HART modem-it interfaces with external HART modems (e.g., HT2012) via its digital control lines and analog output terminals.