Analog Devices Inc. AD5282BRUZ200-R7

Overview

AD5282BRUZ200-R7 from Analog Devices is a dual-channel, 256-position, I²C-compatible digital potentiometer with 200 kΩ end-to-end resistance, ±5 V dual-supply or +15 V single-supply operation, and 30 ppm/°C temperature coefficient. It replaces mechanical potentiometers in precision gain/offset adjustment, programmable voltage/current sources, and line impedance matching circuits.

For engineers reviewing the AD5282BRUZ200-R7 datasheet, AD5282BRUZ200-R7 pinout, AD5282BRUZ200-R7 application, or AD5282BRUZ200-R7 equivalent, key selection criteria include dual-channel rheostat/potentiometer operation, midscale power-on preset, programmable logic outputs O1/O2, and guaranteed −40°C to +85°C industrial temperature range.

Technical Context

The AD5282BRUZ200-R7 implements two independent 8-bit digitally controlled resistor arrays (RAB = 200 kΩ) with wiper positions selectable via I²C interface (up to 400 kHz). Each channel supports both rheostat (W–B or W–A) and potentiometer (A–W–B) configurations, with wiper resistance ≤150 Ω and channel-to-channel resistance matching within ±1%.

It features asynchronous active-low SHDN that shorts W to B while preserving register contents, programmable address pins AD0/AD1 for up to four devices on one bus, and two open-drain logic outputs (O1/O2) configurable as general-purpose digital drivers-enabling direct control of LEDs, analog switches, or logic gates without external buffers.

Key Specifications

Pinout & Package

AD5282BRUZ200-R7 uses a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch), RoHS-compliant and reflow-solderable per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5282BRUZ50-R7 and AD5202BRUZ10, AD5282BRUZ200-R7 offers highest terminal resistance for minimal loading in high-Z sensor interfaces, retains dual-channel correlation for matched systems, and provides I²C flexibility plus integrated logic drivers - making it optimal for industrial calibration and audio infrastructure.

Availability

AD5282BRUZ200-R7 is available at Aetrix Electronics and suitable for audio equipment manufacturing, test and measurement instrumentation, industrial sensor calibration, and communications infrastructure requiring stable component supply and long-term lifecycle support.

Supply support for AD5282BRUZ200-R7 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 AD5280/AD5282 product line delivers precision, nonvolatile-free digital potentiometers for replacing mechanical trimmers in environments demanding reliability, temperature stability, and programmability - especially where EEPROM wear-out or calibration drift must be avoided.

FAQ

What is the maximum operating voltage for AD5282BRUZ200-R7?

The AD5282BRUZ200-R7 supports a maximum total supply voltage of |VDD − VSS| ≤ 16.5 V, with absolute ratings of VDD to GND ≤ +16.5 V and VSS to GND ≥ −7 V. For reliable operation, Analog Devices specifies +4.5 V to +16.5 V single-supply or ±4.5 V to ±5.5 V dual-supply ranges. Exceeding these limits risks permanent damage per Absolute Maximum Ratings Table 2.

Does AD5282BRUZ200-R7 retain wiper position after power cycling?

No, AD5282BRUZ200-R7 does not have nonvolatile memory. Upon power-up, it defaults to midscale (0x80) wiper position unless a programmable reset sequence is executed during startup using the SHDN pin and VL timing. The RDAC register contents are volatile and lost when VDD/VSS are removed.

Can AD5282BRUZ200-R7 operate with a 3.3 V logic interface?

Yes, AD5282BRUZ200-R7 supports 3.3 V logic levels when VL is tied to 3.3 V. Its input logic thresholds scale with VL (VIH ≥ 0.7 × VL, VIL ≤ 0.3 × VL), and O1/O2 outputs swing rail-to-rail relative to VL. Ensure SCL/SDA pull-ups connect to VL, not VDD, to maintain compatibility and avoid overstressing inputs.

What is the wiper resistance specification for AD5282BRUZ200-R7?

The wiper resistance (RW) of AD5282BRUZ200-R7 is specified as 60 Ω minimum and 150 Ω maximum at TA = 25°C, measured with IW = VDD/R at VDD = 3 V or 5 V. This on-resistance contributes directly to total RWB or RWA values and must be included in precision calculations per Equation (1) and (2) in the datasheet.

How many AD5282BRUZ200-R7 devices can share one I²C bus?

Up to four AD5282BRUZ200-R7 devices can operate on a single I²C bus using the AD0 and AD1 address pins, which provide four unique 7-bit slave addresses (0x54, 0x55, 0x56, 0x57). Each device must have distinct AD0/AD1 combinations; floating these pins is not allowed and may cause bus conflicts.