Analog Devices Inc. AD5124BRUZ10

Overview

AD5124BRUZ10 from Analog Devices is a quad-channel, 128-position, nonvolatile digital potentiometer with SPI/I²C interface, 10 kΩ end-to-end resistance, ±8% resistor tolerance, and 35 ppm/°C temperature coefficient. It operates from −40°C to +125°C on single or dual supplies (2.3 V to 5.5 V / ±2.25 V), supporting precision gain setting in programmable power supplies and LCD brightness control.

For engineers reviewing the AD5124BRUZ10 datasheet, AD5124BRUZ10 pinout, AD5124BRUZ10 application, or AD5124BRUZ10 equivalent, this device delivers verified 7-bit resolution, <75 µs start-up time, 3 MHz bandwidth, wiper current up to ±6 mA, and independent 1.8 V–5.5 V logic supply-critical for industrial embedded systems requiring stable analog trimming without recalibration.

Technical Context

The AD5124BRUZ10 implements four independent RDAC channels in a single IC, each configurable as either a rheostat or potentiometer divider. Its linear gain setting mode enables precise RAW/RWB resistor matching, while EEPROM storage retains wiper positions across power cycles.

Dual-supply operation (±2.25 V to ±2.75 V) supports ground-referenced bipolar signal adjustment, and the device supports both SPI (CPOL=0/1, CPHA=0/1) and I²C (100 kHz/400 kHz) interfaces with dedicated SYNC/SCLK/SDI/SDO or SCL/SDA/ADDR pins depending on variant-though AD5124BRUZ10 specifically uses the SPI-capable TSSOP-20 package.

Key Specifications

Pinout & Package

AD5124BRUZ10 is housed in a 20-lead TSSOP package (4.4 mm × 6.5 mm, 0.65 mm pitch), optimized for automated assembly and thermal performance (θJA = 105.92°C/W). Pin functions are defined for SPI interface operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5124BRUZ10, AD5144BRUZ10 offers higher resolution at the expense of slightly relaxed linearity, while MCP42010-I/P sacrifices channel count, nonvolatility, and temperature range for lower unit cost-making AD5124BRUZ10 optimal for robust, multi-channel industrial trimming where EEPROM persistence and wide temp operation are mandatory.

Availability

AD5124BRUZ10 is available at Aetrix Electronics and suitable for programmable power supplies, LCD panel controls, portable electronics level adjustment, and programmable filter design requiring stable component supply across long production lifecycles.

Supply support for AD5124BRUZ10 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 DSP technologies, serving industrial, automotive, communications, and healthcare markets with precision signal processing solutions.

The AD51xx family targets digitally programmable analog trimming in space- and reliability-constrained systems, emphasizing nonvolatile configuration, wide temperature operation, and flexible digital interfacing for next-generation embedded control.

FAQ

What is the guaranteed resistor tolerance for AD5124BRUZ10?

The AD5124BRUZ10 has a guaranteed nominal resistor tolerance of ±8% across the full temperature range (−40°C to +125°C), measured at full-scale code. This specification is production-tested and applies to the 10 kΩ RAB resistance value. Tight tolerance simplifies open-loop applications such as fixed-gain amplifier configurations where external calibration is impractical, and supports resistor matching between channels within ±0.2%.

Does AD5124BRUZ10 support dual-supply operation?

Yes, AD5124BRUZ10 supports true dual-supply operation with VDD/VSS ranging from ±2.25 V to ±2.75 V. This enables ground-referenced bipolar signal adjustment-ideal for AC-coupled audio paths or sensor interfaces where input signals swing above and below ground. Terminal voltage limits remain VSS − 0.3 V to VDD + 0.3 V, and wiper current capability is preserved at ±6 mA for 10 kΩ RAB under dual-supply conditions.

How many wiper positions does AD5124BRUZ10 provide per channel?

AD5124BRUZ10 provides 128 wiper positions (7-bit resolution) per channel. Each of its four RDACs can be independently programmed to any of these positions via SPI or I²C. The resolution is confirmed in Table 2 of the Rev. E datasheet under "Resolution" with N = 7 bits, and supports monotonic operation with DNL ≤ ±0.1 LSB (typical) in potentiometer divider mode-ensuring predictable step response in closed-loop systems.

What package type is used for AD5124BRUZ10?

AD5124BRUZ10 is packaged in a 20-lead TSSOP (Thin Shrink Small Outline Package) measuring 4.4 mm × 6.5 mm with 0.65 mm lead pitch. This package is explicitly listed in Table 1 and Figure 2 of the datasheet for the AD5124 model with SPI interface. Thermal resistance is θJA = 105.92°C/W, and the pinout matches Table 10 (SPI configuration), distinguishing it from LFCSP or I²C-specific variants like AD5144A.

Can AD5124BRUZ10 retain wiper settings after power loss?

Yes, AD5124BRUZ10 retains wiper settings after power loss using on-chip EEPROM. Settings are stored automatically on command or optionally at power-down, with guaranteed data retention of 50 years after 1000 write cycles (or 5 years after 100,000 cycles). The EEPROM is accessed via SPI/I²C commands, and the device powers up with the last stored wiper values-enabling fail-safe analog configuration in mission-critical industrial systems without boot-time reinitialization.