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AD5231BRUZ10-REEL7

1024-position nonvolatile digital potentiometer, 10kΩ, SPI, EEMEM, 16-TSSOP, REEL7 packaging

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Manufacturer Part：

AD5231BRUZ10-REEL7

Package：

16-TSSOP (5.0x4.4mm)

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Description

Product Overview

The AD5231BRUZ10-REEL7 from Analog Devices is a nonvolatile memory, 1024-position digital potentiometer with 10kΩ terminal resistance. Featuring an SPI-compatible interface, EEMEM for wiper setting storage, and versatile programming with 16 modes of operation, it is housed in a 16-lead TSSOP package and operates over -40°C to +85°C.

Key Specifications

Category Digital Potentiometer
Resolution 1024 positions (10-bit)
Terminal Resistance 10 kΩ
Number of Circuits 1
Memory Type Nonvolatile (EEMEM)
Interface SPI (3-wire compatible)
Supply Voltage 2.7V ~ 5.5V (single) or ±2.25V ~ 2.75V (dual)
EEMEM Restore Time 140 μs (typical)
Data Retention 100 years (typical)
Temperature Coefficient 600 ppm/°C (typical)
Operating Temperature -40°C ~ 85°C
Package 16-TSSOP
Packaging Tape & Reel (REEL7)
Part Status Production

Features

  • 1024-position resolution for precise adjustment
  • Nonvolatile EEMEM maintains wiper setting at power-on
  • EEMEM restore time: 140μs typical
  • Full monotonic operation guaranteed
  • 16 modes of operation via SPI including scratchpad, increment/decrement
  • ±6 dB/step log taper increment/decrement commands
  • Wiper setting readback capability
  • 28 bytes extra EEMEM for user-defined data
  • Permanent memory write protection
  • Linear and logarithmic adjustment modes

Applications

  • Mechanical potentiometer replacement
  • Instrumentation gain and offset adjustment
  • Programmable filters, delays, and time constants
  • Programmable power supplies
  • Sensor calibration and trimming

The AD5231BRUZ10-REEL7 from Analog Devices is a nonvolatile memory, digitally controlled potentiometer (DCP) with 1024-step resolution and 10kΩ terminal resistance. It performs the same electronic adjustment function as a mechanical potentiometer with enhanced resolution, solid-state reliability, and remote controllability. The AD5231 features versatile programming using a standard 3-wire SPI-compatible serial interface supporting 16 modes of operation, including scratchpad programming, EEMEM storing and restoring, linear increment/decrement, ±6 dB/step log taper adjustment, and wiper setting readback. The EEMEM stores the wiper setting and automatically transfers it to the RDAC register at power-on in 140μs. An additional 28 bytes of EEMEM are available for user-defined data such as look-up tables or system identification. The REEL7 suffix indicates Tape & Reel packaging.

The AD5231 operates as a digitally controlled resistor with three terminals: A, B, and W (wiper). The 1024-position RDAC register controls the wiper position, dividing the total resistance (10kΩ) between W-A and W-B. The SPI interface receives 24-bit command words consisting of an instruction byte and a data byte. The scratchpad register allows direct wiper position programming without affecting EEMEM. The EEMEM stores the desired wiper position permanently and restores it automatically at power-on. Increment/decrement commands move the wiper one step at a time without requiring full SPI data transfers. The ±6 dB commands double or halve the wiper setting for logarithmic adjustment. Write protection (WP) prevents accidental EEMEM modification, while the PR pin allows hardware EEMEM restore.

Pin Name Type Description
1 VDD PWR Positive supply (2.7V-5.5V)
2 GND GND Ground
3 VSS PWR Negative supply (dual supply mode)
4 A Analog Terminal A of resistor
5 W Analog Wiper terminal
6 B Analog Terminal B of resistor
7 RDY O Ready output (EEMEM operation status)
8 WP I Write protect (protects EEMEM)
9 PR I Program restore (hardware EEMEM recall)
10 CS I Chip select (active low)
11 SDI I SPI data input
12 SDO O SPI data output (wiper readback)
13 CLK I SPI clock
14 NC – No connect
15 NC – No connect
16 NC – No connect
  • Gain Adjustment: Remote gain control of op-amp circuits in instrumentation and audio
  • Sensor Calibration: Trim offset and span of sensor signal chains at production or in-field
  • Power Supply: Programmable output voltage adjustment in lab and bench supplies
  • Filter Tuning: Adjustable RC time constants for programmable filters and oscillators
  • LCD Contrast: Nonvolatile contrast adjustment for LCD modules
Model Manufacturer Key Difference
AD5231BRUZ50 Analog Devices 50kΩ resistance option
AD5231BRUZ100 Analog Devices 100kΩ resistance option
AD5235BRUZ10 Analog Devices Dual channel, 1024-position, 10kΩ
MCP4161-103E/SN Microchip 7-bit (129 pos), 10kΩ, SPI, 8-SOIC
AD8400ARZ10 Analog Devices 256-position, volatile, 10kΩ, simpler
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Quality Assurance

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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