Analog Devices Inc. AD5124BRUZ10-RL7

Overview

AD5124BRUZ10-RL7 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 and supports single- or dual-supply configurations for precision analog gain/offset adjustment in portable and industrial signal conditioning circuits.

For engineers reviewing the AD5124BRUZ10-RL7 datasheet, AD5124BRUZ10-RL7 pinout, AD5124BRUZ10-RL7 application, or AD5124BRUZ10-RL7 equivalent, this device delivers verified 7-bit resolution, <75 µs start-up time, 3 MHz bandwidth, ±6 mA wiper current capability, and independent 1.8 V–5.5 V logic supply-critical for low-power, high-stability programmable resistor design.

Technical Context

The AD5124BRUZ10-RL7 integrates four independent RDAC channels in a single 20-lead TSSOP package, each configurable as either a rheostat or potentiometer divider. Its linear gain setting mode enables precise resistor matching between RAW and RWB strings, while EEPROM storage retains wiper settings across power cycles without external memory.

It supports both SPI (CPOL=0/1, CPHA=0/1) and I²C (standard/fast mode) interfaces on shared pins, with dedicated SYNC (SPI) or RESET/ADDR (I²C variant) control. Dual-supply operation (±2.25 V to ±2.75 V) allows ground-referenced bipolar signal adjustment, and its 40 Ω typical wiper resistance at end positions ensures minimal insertion error in series-connected configurations.

Key Specifications

Pinout & Package

AD5124BRUZ10-RL7 is housed in a RoHS-compliant, lead-free 20-lead TSSOP (4.4 mm × 6.5 mm), optimized for automated assembly and thermal performance (θJA = 105.92°C/W). Pin functions are defined for SPI interface configuration per Analog Devices Rev. E datasheet Figure 9 and Table 10.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5124BRUZ10-RL7, AD5144BRUZ10-RL7 offers higher resolution at the cost of slower EEPROM writes, while MCP42010-I/SL trades nonvolatility for lower unit cost and simpler interface-making AD5124BRUZ10-RL7 optimal for robust, self-contained analog tuning in harsh environments.

Availability

AD5124BRUZ10-RL7 is available at Aetrix Electronics and suitable for portable electronics level adjustment, LCD panel brightness and contrast controls, and programmable power supplies requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for AD5124BRUZ10-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, Inc. 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 AD5124 belongs to Analog Devices' precision digital potentiometer family designed for replacing mechanical trimmers in closed-loop calibration, sensor compensation, and programmable analog signal conditioning systems.

FAQ

What is the maximum wiper current rating for AD5124BRUZ10-RL7?

The AD5124BRUZ10-RL7 supports ±6 mA continuous wiper current when configured with 10 kΩ end-to-end resistance. This rating applies under single-supply conditions (VDD ≥ 2.7 V) and ensures reliable operation in op-amp feedback networks or LED bias circuits without exceeding switch thermal limits. Exceeding this current may degrade long-term endurance or cause nonmonotonic behavior.

Does AD5124BRUZ10-RL7 retain wiper settings after power cycling?

Yes, AD5124BRUZ10-RL7 stores wiper positions in on-chip EEPROM, retaining all four channel settings across power cycles. The device guarantees 50 years of data retention at 125°C junction temperature and 100,000 write cycles per JEDEC A117 qualification. Settings persist even if VDD, VSS, or VLOGIC are removed simultaneously.

Can AD5124BRUZ10-RL7 operate with separate analog and digital supplies?

Yes, AD5124BRUZ10-RL7 features independent VDD/VSS (analog) and VLOGIC (digital) supplies. VLOGIC accepts 1.8 V to 5.5 V, enabling direct interfacing with 1.8 V or 3.3 V microcontrollers while analog section runs at 5 V. This separation reduces digital switching noise coupling into sensitive analog nodes and improves overall system SNR.

What is the start-up time specification for AD5124BRUZ10-RL7?

The AD5124BRUZ10-RL7 achieves full functional readiness in less than 75 µs after power stabilization, as specified in the datasheet's Table 6. This fast start-up enables immediate analog tuning upon system boot-critical for applications like medical instruments or test equipment where delay-free calibration is required at power-on.

Is AD5124BRUZ10-RL7 compatible with both SPI and I²C interfaces?

AD5124BRUZ10-RL7 supports SPI interface only. While the AD5124 family includes I²C-capable variants (e.g., AD5144A), the AD5124BRUZ10-RL7 part number specifically denotes the SPI-enabled version in TSSOP package. Its pinout includes SYNC, SCLK, SDI, and SDO-not SCL, SDA, or ADDR-confirming exclusive SPI compatibility per Analog Devices ordering guide.