Analog Devices Inc. AD5750BCPZ

Overview

AD5750BCPZ from Analog Devices is a single-channel, precision industrial current/voltage output driver with software-programmable ranges, ±0.03% FSR total unadjusted error (TUE), ±5 ppm/°C typical current output drift, and 32-lead 5 mm × 5 mm LFCSP package. It delivers programmable 4 mA to 20 mA, 0 mA to 24 mA, and ±24 mA current outputs plus 0 V to 10 V, ±10 V voltage outputs with 20% overrange - used in PLC analog output modules for field instrument control.

For engineers reviewing the AD5750BCPZ datasheet, AD5750BCPZ pinout, AD5750BCPZ application, or AD5750BCPZ equivalent, this page provides verified functional identity, validated SPI/MICROWIRE interface behavior, confirmed fault detection architecture, exact thermal and supply range compliance (−40°C to +105°C, ±12 V to ±24 V), and real-world loop compliance (AVDD − 2.75 V).

Technical Context

The AD5750BCPZ implements a dual-path analog output architecture: a high-accuracy current output stage with internal/external RSET selection and a separate buffered voltage output stage with COMP1/COMP2 compensation pins. Its digital interface supports both 3-wire SPI and MICROWIRE protocols with optional CRC-8 packet error checking (PEC) for noise immunity in industrial environments.

Hardware/software mode selection is controlled by the HW SELECT pin, enabling either register-based configuration (software mode) or pin-strapped range selection (hardware mode). Output fault detection includes open-circuit (IFAULT), short-circuit (VFAULT), and overtemperature (TEMP) alerts, each mapped to dedicated open-drain outputs with pull-up requirements.

Key Specifications

Pinout & Package

AD5750BCPZ uses a 32-lead, 5 mm × 5 mm LFCSP package with exposed paddle tied to AVSS. Pin functions are mode-dependent (software/hardware), with shared pins like SDO/VFAULT and FAULT/TEMP supporting dual roles per configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5750BCPZ, AD5751ACPZ removes the AVSS dependency but sacrifices VSENSE+/− precision sensing, while AD5422BREZ embeds a DAC but eliminates voltage output flexibility - making AD5750BCPZ optimal for dual-mode (I/V), dual-rail, fault-aware industrial I/O.

Availability

AD5750BCPZ is available at Aetrix Electronics and suitable for PLC analog output modules, industrial actuator drivers, HART field instruments, and process control safety loops requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for AD5750BCPZ 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, serving industrial, automotive, communications, and healthcare markets since 1965.

The AD5750BCPZ belongs to Analog Devices' industrial precision output driver product line, designed specifically for programmable automation controllers (PACs), distributed I/O systems, and safety-critical process instrumentation requiring metrology-grade accuracy and robust fault handling.

FAQ

What is the maximum loop compliance voltage supported by the AD5750BCPZ?

The AD5750BCPZ supports a current output loop compliance voltage up to AVDD − 2.75 V. With AVDD = +24 V (±10%), this yields a maximum of 21.25 V - sufficient to drive standard 250 Ω–600 Ω loads in 4–20 mA loops while maintaining full-scale accuracy. This specification is validated across −40°C to +105°C and applies regardless of selected current range (e.g., 4–20 mA or ±24 mA). The AD5750BCPZ datasheet confirms this value in Table 2 under "Current Loop Compliance Voltage".

Does the AD5750BCPZ support HART communication overlay on its 4–20 mA output?

Yes, the AD5750BCPZ supports HART communication when configured in 0 mA–20 mA or 4 mA–20 mA current output mode. Its 2% programmable overrange provides headroom for the 1 mA peak-to-peak HART sinusoidal signal without clipping, and its integrated PEC (packet error checking) via CRC-8 ensures robust SPI configuration even in electrically noisy plant environments. The AD5750BCPZ does not decode HART itself but maintains analog integrity required for external HART modem integration.

How does the AD5750BCPZ handle fault conditions such as open-circuit or short-circuit events?

The AD5750BCPZ provides three dedicated fault detection mechanisms: open-circuit detection on IOUT (reported via IFAULT pin in hardware mode), short-circuit detection on VOUT (reported via VFAULT pin), and overtemperature detection (reported via TEMP/FAULT pin). All fault flags are open-drain outputs requiring external pull-up resistors. In software mode, FAULT/TEMP aggregates all faults into one alert. These features are fully documented in the AD5750BCPZ datasheet Sections 7.3 and 9.2, with response times under 10 µs.

Can the AD5750BCPZ operate with a single positive supply instead of dual ±12 V to ±24 V rails?

No - the AD5750BCPZ requires dual analog supplies: AVDD (+12 V to +24 V) and AVSS (−12 V to −24 V). It does not support single-supply operation. For single-rail alternatives, consider the AD5751ACPZ, which operates from +10 V to +55 V AVDD only and shares similar current/voltage range programmability but lacks VSENSE+/− and bipolar voltage symmetry. The AD5750BCPZ's dual-rail architecture is essential for its ±24 mA and ±10 V output capabilities.

What is the role of the HW SELECT pin on the AD5750BCPZ?

The HW SELECT pin determines whether the AD5750BCPZ operates in hardware mode (HW SELECT = logic high) or software mode (HW SELECT = logic low). In hardware mode, output ranges are set by R0–R3 pin strapping; in software mode, ranges are configured via SPI writes to internal registers. This pin must be driven to a valid logic level at power-up - floating is undefined. Its function is explicitly defined in the AD5750BCPZ datasheet Section 7.1 and Figure 1's functional block diagram.