Analog Devices Inc. AD5206BRZ10

Overview

AD5206BRZ10 from Analog Devices is a 6-channel, 256-position digital potentiometer with 10 kΩ end-to-end resistance, SPI-compatible 3-wire serial interface, ±2.7 V dual-supply or +2.7 V to +5.5 V single-supply operation, and midscale power-on reset-used for precision gain/offset adjustment in instrumentation amplifiers and programmable filter tuning.

For engineers reviewing the AD5206BRZ10 datasheet, AD5206BRZ10 pinout, AD5206BRZ10 application, or AD5206BRZ10 equivalent, key selection criteria include channel count (6), terminal resistance (10 kΩ), wiper settling time (2 μs at 10 kΩ), THD (0.004%), and guaranteed monotonicity in both rheostat and potentiometer divider modes.

Technical Context

The AD5206BRZ10 implements six independent 8-bit digitally controlled variable resistors, each with its own latch updated via an 11-bit serial word (3 address bits + 8 data bits) clocked on CLK rising edge. Address decoding (A2–A0) selects one of six RDAC channels (000–101), enabling random-access updates without affecting other channels.

It supports both rheostat mode (RWB or RWA) and potentiometer divider mode, with linear transfer functions: RWB(Dx) = (Dx/256) × RAB + RW and VW(Dx) = (Dx/256) × VAB + VB. Temperature coefficient is 700 ppm/°C for RAB and only 15 ppm/°C for voltage divider output due to ratio-metric operation.

Key Specifications

Pinout & Package

AD5206BRZ10 is housed in a 24-lead SOIC package (body width 0.300", JEDEC MS-013). Pin assignments follow standard AD5206 SOIC/TSSOP configuration per Rev. G datasheet Figure 8 and Table 7.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5206BRZ10, AD5206BRUZ10 offers identical functionality in a smaller footprint but requires different land pattern and reflow profile, while MAX5487ETE+T trades SPI flexibility and dual-supply capability for I²C simplicity and higher on-resistance-neither is pin-compatible nor drop-in.

Availability

AD5206BRZ10 is available at Aetrix Electronics and suitable for instrumentation calibration, programmable filtering, line impedance matching, and offset compensation requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for AD5206BRZ10 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, founded in 1965 and headquartered in Wilmington, MA.

The AD5204/AD5206 family was designed specifically for replacing mechanical potentiometers in precision analog signal conditioning-emphasizing monotonicity, low THD, ratio-metric stability, and robust serial interface for automated test and embedded calibration.

FAQ

What is the terminal resistance tolerance and temperature coefficient of AD5206BRZ10?

The AD5206BRZ10 has a nominal terminal resistance of 10 kΩ with a tolerance of ±30% at 25°C. Its resistance temperature coefficient is 700 ppm/°C across −40°C to +85°C. This applies to the A–B end-to-end resistance; voltage divider mode reduces effective drift to 15 ppm/°C due to ratio-metric operation. These values are measured and guaranteed per Rev. G datasheet Table 1.

Does AD5206BRZ10 support dual-supply operation, and what are the voltage limits?

Yes, AD5206BRZ10 supports dual-supply operation with VDD = +2.7 V and VSS = −2.7 V (±2.7 V), provided |VDD| + |VSS| ≤ 5.5 V. It also operates from +2.7 V to +5.5 V single supply with VSS = 0 V. Absolute maximum ratings specify VDD to GND ≤ +7 V and VSS to GND ≥ −7 V, but functional operation is guaranteed only within the specified supply ranges.

How does the serial interface of AD5206BRZ10 work, and what is the data format?

The AD5206BRZ10 uses a 3-wire SPI-compatible interface (CS, CLK, SDI) with MSB-first 11-bit serial words: three address bits (A2–A0) followed by eight data bits (D7–D0). CS falling initiates shift-in; on CS rising, the address bits decode which of the six RDAC latches receives the eight data bits. The AD5206BRZ10 does not feature SDO-unlike AD5204, it lacks daisy-chain capability.

Is AD5206BRZ10 monotonic, and what are its DNL/INL specifications?

Yes, AD5206BRZ10 is guaranteed monotonic. Its differential nonlinearity (DNL) is ±0.25 LSB max and integral nonlinearity (INL) is ±0.5 LSB max in potentiometer divider mode, and similarly ±0.25 LSB and ±0.5 LSB in rheostat mode. These specifications ensure no missing codes and predictable step response-critical for closed-loop control and filter tuning applications using AD5206BRZ10.

What happens to the wiper position during power-up or reset?

AD5206BRZ10 features an internal power-on preset that automatically places all six wipers at midscale (code 0x80) upon power application-no external PR pin assertion required. This behavior is inherent to the device architecture and ensures a known, safe resistance state (5 kΩ for 10 kΩ version) at startup, preventing undefined gain or offset in sensitive analog circuits using AD5206BRZ10.