Analog Devices Inc. AD5206BRUZ10

Overview

AD5206BRUZ10 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 AD5206BRUZ10 datasheet, AD5206BRUZ10 pinout, AD5206BRUZ10 application, or AD5206BRUZ10 equivalent, key selection considerations include channel count (6), terminal resistance (10 kΩ), wiper settling time (2 μs at 10 kΩ), temperature coefficient (700 ppm/°C), and TSSOP-24 package compatibility with industrial-grade PCB layouts.

Technical Context

The AD5206BRUZ10 implements six independent 8-bit digitally controlled variable resistors, each with dedicated A/B/W terminals and individual latch control via 3-bit address decoding (000–101) in an 11-bit SPI frame. All channels share a common serial interface (CS, CLK, SDI) and operate synchronously under CS strobe-driven latch loading.

It supports both rheostat (A–W or B–W) and potentiometer divider (A–B–W) configurations, with guaranteed monotonicity, ±0.25 LSB differential nonlinearity, and 15 ppm/°C voltage-divider temperature coefficient-enabling stable ratio-based voltage scaling without trimming.

Key Specifications

Pinout & Package

AD5206BRUZ10 is housed in a 24-lead TSSOP package (4.4 mm × 7.8 mm, 0.65 mm pitch), optimized for high-density industrial PCBs and reflow-compatible assembly. Pin 1 is marked by a dot; exposed pad is not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5206BRUZ50 and AD5204BRUZ10, the AD5206BRUZ10 uniquely balances 6-channel density, 10 kΩ low-Z drive capability, and 721 kHz bandwidth-making it optimal for multi-stage analog signal conditioning where speed, channel count, and impedance matching converge.

Availability

AD5206BRUZ10 is available at Aetrix Electronics and suitable for instrumentation gain calibration, programmable filter tuning, line impedance matching, and voltage-to-current conversion requiring stable component supply across industrial temperature ranges.

Supply support for AD5206BRUZ10 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 precision measurement, industrial automation, and communications markets since 1965.

The AD5206BRUZ10 belongs to the AD5204/AD5206 family of digitally controlled potentiometers, designed specifically to replace mechanical trimmers in automated calibration, adaptive filtering, and programmable analog front-ends.

FAQ

What is the terminal resistance tolerance and temperature coefficient of the AD5206BRUZ10?

The AD5206BRUZ10 has a nominal terminal resistance of 10 kΩ with a tolerance of ±30% at 25°C and a temperature coefficient of 700 ppm/°C for the A–B resistance. This means resistance drift is approximately ±0.07% per °C change-critical for applications requiring long-term stability across industrial temperature ranges. The AD5206BRUZ10 maintains this spec across all six channels.

Does the AD5206BRUZ10 support dual-supply operation, and what are the voltage limits?

Yes, the AD5206BRUZ10 supports dual-supply operation with VDD = +2.7 V and VSS = −2.7 V (|VDD| + |VSS| < 5.5 V). It also operates from a single +2.7 V to +5.5 V supply. Absolute maximum ratings allow VDD to GND up to +7 V and VSS to GND down to −7 V, but functional operation is guaranteed only within the specified supply ranges. The AD5206BRUZ10 uses these rails to bias internal switches and analog terminals.

How many bits does the AD5206BRUZ10 use for wiper position control, and what is its resolution?

The AD5206BRUZ10 uses an 8-bit digital code (0x00 to 0xFF) to control wiper position across 256 discrete steps. This yields a resolution of 1/256 ≈ 0.39% of full-scale resistance per step. In voltage-divider mode, this corresponds to VAB/256 per LSB-e.g., 19.5 mV per step with a 5 V A–B voltage. The AD5206BRUZ10 guarantees monotonic behavior and ±0.25 LSB differential nonlinearity.

Can the AD5206BRUZ10 be daisy-chained, and what is required for that configuration?

Yes, the AD5206BRUZ10 supports daisy-chaining via its open-drain SDO pin, which connects to the SDI of the next device. A pull-up resistor (to VLOGIC ≤ 7 V) is mandatory on SDO. Clock period must increase to accommodate cumulative capacitive loading; for two AD5206BRUZ10 devices, 22 bits (2 × 11-bit frames) must be clocked before CS goes high. The AD5206BRUZ10's SDO remains high-impedance during SHDN mode to prevent bus contention.

What happens to the wiper positions during power-up or reset on the AD5206BRUZ10?

The AD5206BRUZ10 features an internal power-on reset that automatically loads 0x80 into all six RDAC latches, positioning each wiper at midscale (50% of RAB) upon power application. An external active-low PR pin provides hardware reset to the same midscale state. Latch values persist through power cycles, and the AD5206BRUZ10 does not require host initialization to achieve a known analog state.