Analog Devices Inc. AD5263BRU50-REEL7

Overview

AD5263BRU50-REEL7 from Analog Devices is a quad-channel, 256-position digital potentiometer with pin-selectable SPI or I²C interface, 50 kΩ end-to-end resistance, ±30 ppm/°C rheostat tempco, and operation from +4.5 V to +15 V single supply or ±5 V dual supply. It replaces mechanical potentiometers in precision gain/offset adjustment and sensor calibration circuits.

For engineers reviewing the AD5263BRU50-REEL7 datasheet, AD5263BRU50-REEL7 pinout, AD5263BRU50-REEL7 application, or AD5263BRU50-REEL7 equivalent, key selection criteria include channel count, interface flexibility (DIS-pin configurable), wiper temperature coefficient, shutdown functionality, and automotive-grade –40°C to +125°C operation.

Technical Context

The AD5263BRU50-REEL7 integrates four independent 8-bit RDAC channels, each with A/W/B terminals and programmable wiper position. Its pin-selectable DIS input determines whether the serial interface operates as 3-wire SPI (DIS = 0) or 2-wire I²C (DIS = 1), with address decoding via AD0/AD1 pins.

Each channel supports both rheostat (A–W or B–W) and potentiometer (A–W–B voltage divider) configurations. Power-on defaults to midscale (0x80), and shutdown mode (SHDN high) opens Terminal A and shorts W to B while preserving register contents.

Key Specifications

Pinout & Package

AD5263BRU50-REEL7 is housed in a narrow-body 24-lead TSSOP package (4.4 mm × 7.8 mm, 0.65 mm pitch), optimized for space-constrained PCB layouts and reflow-compatible assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5262BRU50-REEL7, the AD5263BRU50-REEL7 adds two extra channels and retains identical precision specs, making it ideal for multi-sensor or multi-loop systems. Against MCP42050-I/SL, AD5263BRU50-REEL7 offers interface flexibility and integrated logic outputs - critical for mixed-protocol or resource-constrained designs.

Availability

AD5263BRU50-REEL7 is available at Aetrix Electronics and suitable for instrumentation gain adjustment, stereo audio level control, programmable power supplies, and sensor calibration requiring stable component supply across automotive and industrial lifecycles.

Supply support for AD5263BRU50-REEL7 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, headquartered in Norwood, MA.

The AD5263 product line delivers quad-channel, automotive-grade digital potentiometers with flexible serial interfaces and low-drift performance for precision trimming and programmable analog functions in harsh environments.

FAQ

What is the end-to-end resistance tolerance and temperature coefficient of AD5263BRU50-REEL7?

The AD5263BRU50-REEL7 has a nominal end-to-end resistance of 50 kΩ with ±20% initial tolerance. In rheostat mode (A–W or B–W), its temperature coefficient is ±30 ppm/°C; in potentiometer divider mode (A–W–B), it achieves ±5 ppm/°C - critical for high-stability gain and reference applications. These values are specified over –40°C to +125°C and confirmed in Table 1 of the AD5263 Rev. F datasheet.

How does the DIS pin determine the serial interface mode for AD5263BRU50-REEL7?

The DIS pin on AD5263BRU50-REEL7 selects the communication protocol: logic low (≤0.8 V) configures the device for 3-wire SPI (CS/SDI/CLK), while logic high (≥2.4 V) enables 2-wire I²C (SDA/SCL). This pin-selectable architecture allows a single AD5263BRU50-REEL7 design to interface with either SPI- or I²C-based host controllers without hardware modification.

Does AD5263BRU50-REEL7 retain wiper position during shutdown?

Yes, AD5263BRU50-REEL7 retains its programmed wiper position during shutdown. When SHDN is asserted high, Terminal A opens and W is shorted to Terminal B, but the internal RDAC latch contents remain unchanged. Upon exit from shutdown, the previously stored wiper position is immediately reapplied - no reprogramming is required, ensuring deterministic behavior after power cycling or low-power states.

Can AD5263BRU50-REEL7 operate from a single 5 V supply?

Yes, AD5263BRU50-REEL7 supports single-supply operation from +4.5 V to +15 V. At +5 V, it meets all AC and DC specifications including 2 µs wiper settling time and ±1/4 LSB DNL. The VL (logic supply) pin must be tied to the same 5 V rail or a lower voltage (2.7–5.5 V), and digital inputs must remain within VL-referenced logic thresholds per Table 1.

What are the functions of the O1 and O2 pins on AD5263BRU50-REEL7?

In I²C mode (DIS = 1), pins SDO/O1 and NC/O2 become programmable open-drain logic outputs O1 and O2. They can drive external logic gates, analog switches, or LEDs with VOH ≥ 4 V (ISOURCE = 40 µA) and VOL ≤ 0.4 V (ISINK = 1.6 mA). These outputs are controlled via the I²C instruction byte's O1/O2 bits - adding two general-purpose outputs without extra ICs.