Analog Devices Inc. AD5175BRMZ-10-RL7

Overview

AD5175BRMZ-10-RL7 from Analog Devices is a single-channel, 1024-position digital rheostat with I²C interface and 50-times programmable (50-TP) nonvolatile wiper memory. It features 10 kΩ nominal resistance, ±15% resistor tolerance, 35 ppm/°C temperature coefficient in rheostat mode, and operates from 2.7 V to 5.5 V single supply or ±2.5 V to ±2.75 V dual supply. It is used for precision gain/offset adjustment in instrumentation and op-amp circuits.

For engineers reviewing the AD5175BRMZ-10-RL7 datasheet, AD5175BRMZ-10-RL7 pinout, AD5175BRMZ-10-RL7 application, or AD5175BRMZ-10-RL7 equivalent, this page delivers verified specifications, validated pin functions, confirmed I²C timing compliance (up to 400 kHz), real-world use cases in sensor calibration and programmable power supplies, and two technically documented alternative parts with precise functional distinctions.

Technical Context

The AD5175BRMZ-10-RL7 implements a true variable resistor architecture with a 10-bit RDAC register controlling wiper position between terminals A and W. Its 50-TP memory block uses fuse-based nonvolatile storage requiring no external programming voltage-only a 1 μF capacitor on EXT_CAP-and supports up to 50 permanent writes with ~350 ms program time per location.

It supports standard and fast-mode I²C (100 kHz / 400 kHz), with a 7-bit slave address configurable via ADDR pin (0x5C, 0x5E, or 0x5F). The device powers up with midscale default until first 50-TP programming, then restores stored wiper value automatically at each power-on reset.

Key Specifications

Pinout & Package

AD5175BRMZ-10-RL7 is housed in a 10-lead LFCSP package (3 mm × 3 mm × 0.8 mm), RoHS-compliant, with exposed pad connected to VSS or left floating. Pinout matches the AD5175 functional diagram and datasheet Rev. A Figure 5.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital rheostat applications.

Compared with AD5175BRMZ-10-RL7, AD5174BRMZ-10-RL7 omits dual-supply capability but offers identical pin compatibility and 50-TP functionality, while MCP45HV51-103E/MS trades nonvolatility for higher voltage range and lower resolution-making it appropriate for different system-level trade-offs in power domain and retention requirements.

Availability

AD5175BRMZ-10-RL7 is available at Aetrix Electronics and suitable for instrumentation gain adjustment, programmable power supplies, sensor calibration, and programmable filter tuning requiring stable component supply, guaranteed −40°C to +125°C operation, and long-term calibration retention.

Supply support for AD5175BRMZ-10-RL7 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 AD5175BRMZ-10-RL7 belongs to Analog Devices' precision digital potentiometer product line, designed specifically for replacing mechanical rheostats in high-reliability, temperature-stable, and field-calibratable analog signal conditioning systems.

FAQ

What is the resistance tolerance and temperature coefficient of the AD5175BRMZ-10-RL7?

The AD5175BRMZ-10-RL7 has a nominal resistance of 10 kΩ with ±15% initial tolerance stored in memory. In rheostat mode, its temperature coefficient is 35 ppm/°C at full-scale code-measured and specified in the datasheet Rev. A Table 1. This value remains consistent across the operating temperature range of −40°C to +125°C, ensuring predictable drift behavior in precision analog circuits using the AD5175BRMZ-10-RL7.

Does the AD5175BRMZ-10-RL7 support dual-supply operation, and what are the valid voltage ranges?

Yes, the AD5175BRMZ-10-RL7 supports dual-supply operation with VDD = +2.5 V to +2.75 V and VSS = −2.5 V to −2.75 V, enabling true bipolar signal handling. It also operates from a single supply of 2.7 V to 5.5 V (VSS = 0 V). Both configurations are fully characterized in the Electrical Characteristics table (Rev. A Page 3), and terminal voltages must remain within VSS − 0.3 V to VDD + 0.3 V per Absolute Maximum Ratings.

How does the 50-TP memory function in the AD5175BRMZ-10-RL7, and what is required to program it?

The 50-TP memory in the AD5175BRMZ-10-RL7 stores wiper positions permanently using fuse-based nonvolatile technology-no external programming voltage is needed. Programming requires issuing Command 3 via I²C, supplying a 1 μF capacitor between EXT_CAP and VSS, and allowing ~350 ms for completion. Each program consumes ~4 mA for 55 ms. The AD5175BRMZ-10-RL7 retains up to 50 distinct wiper values, restoring the last programmed value at power-up.

What I²C addressing options does the AD5175BRMZ-10-RL7 support, and how is the address configured?

The AD5175BRMZ-10-RL7 uses a 7-bit I²C slave address where the five MSBs are fixed as 01011, and the two LSBs are set by the ADDR pin: GND → 0x5C, VDD → 0x5F, and floating/NC → 0x5E (per Rev. A Table 6). This allows up to three AD5175BRMZ-10-RL7 devices on the same bus without address conflict. Standard (100 kHz) and fast-mode (400 kHz) timing are supported, with input filtering enabled by default for noise immunity.

Is the AD5175BRMZ-10-RL7 pin-compatible with other packages or variants in the AD517x family?

Yes-the AD5175BRMZ-10-RL7 (LFCSP-10) shares identical pinout and function mapping with the AD5175BCPZ-10-RL7 (same LFCSP) and AD5175ARMZ-10-RL7 (MSOP-10), as confirmed in Rev. A Pin Configuration Figures 4 and 5 and Table 5. All variants use the same VDD/VSS/A/W/RESET/EXT_CAP/SDA/SCL/ADDR/GND assignment. However, thermal performance differs: LFCSP θJA = 50°C/W vs. MSOP θJA = 135°C/W.