Analog Devices Inc. AD5206BRZ100

Overview

AD5206BRZ100 from Analog Devices is a 6-channel, 256-position digital potentiometer with 100 kΩ end-to-end resistance, SPI-compatible 3-wire 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 trimming in instrumentation and programmable filter tuning.

For engineers reviewing the AD5206BRZ100 datasheet, AD5206BRZ100 pinout, AD5206BRZ100 application, or AD5206BRZ100 equivalent, key selection criteria include channel count (6), terminal resistance (100 kΩ), wiper settling time (18 μs at RAB = 100 kΩ), THD (0.004%), and guaranteed monotonicity in both rheostat and potentiometer modes.

Technical Context

The AD5206BRZ100 implements six independent, digitally controlled variable resistors using a resistor ladder architecture with CMOS switch matrix. Each channel features an 8-bit latch updated via an 11-bit serial word (3 address + 8 data bits), decoded by A2–A0 pins to select RDAC 1–6.

It supports dual operating modes: rheostat (W–B or W–A) with 700 ppm/°C tempco and potentiometer divider mode with improved 15 ppm/°C voltage ratio drift. Wiper resistance is 50–100 Ω, and full-scale error is limited to −2 to 0 LSB in divider mode.

Key Specifications

Pinout & Package

AD5206BRZ100 is housed in a 24-lead SOIC package (body width 7.5 mm, JEDEC MS-013). Pin functions are defined per AD5206-specific mapping in 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 AD5206BRZ100, AD5206BRUZ100 offers identical functionality in a smaller, thermally superior TSSOP package, while AD5204BRZ100 reduces channel count to four-both provide drop-in replacement capability for layout reuse but require verification of pin compatibility and thermal derating in high-density assemblies.

Availability

AD5206BRZ100 is available at Aetrix Electronics and suitable for instrumentation calibration, programmable filter design, line impedance matching, and offset voltage adjustment requiring stable component supply across extended temperature ranges.

Supply support for AD5206BRZ100 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 industrial, automotive, communications, and healthcare markets since 1965.

The AD5206BRZ100 belongs to Analog Devices' precision digital potentiometer product line, engineered for replacing mechanical trimmers in automated calibration, sensor signal conditioning, and programmable analog front-ends.

FAQ

What is the terminal resistance tolerance of the AD5206BRZ100?

The AD5206BRZ100 has a nominal terminal resistance of 100 kΩ with a tolerance of ±30% at 25°C, as specified in Table 1 of the Rev. G datasheet. This tolerance reflects process variation across manufacturing lots and must be accounted for in absolute-resistance applications like precision current sources-but is less critical in ratiometric uses such as voltage dividers where relative matching dominates.

Does the AD5206BRZ100 support dual-supply operation?

Yes, the AD5206BRZ100 supports ±2.7 V dual-supply operation, with VDD = +2.7 V and VSS = −2.7 V. The absolute maximum rating limits |VDD| + |VSS| to ≤5.5 V, and all digital inputs remain referenced to GND. This enables direct interfacing with bipolar op-amps and true dual-rail signal paths without level-shifting circuitry.

How many bits does the AD5206BRZ100 use for wiper position control?

The AD5206BRZ100 uses an 8-bit data word to control wiper position, providing 256 discrete steps (0x00 to 0xFF). Each channel's RDAC latch stores this 8-bit value, and the serial interface transfers an 11-bit word (3 address bits + 8 data bits) to target a specific channel-ensuring deterministic, non-overlapping updates across all six channels.

Is there a shutdown pin on the AD5206BRZ100?

No, the AD5206BRZ100 does not include a shutdown (SHDN) pin. That feature is exclusive to the AD5204 variant (4-channel). The AD5206BRZ100 remains fully operational at all times; its quiescent current is typically 12–60 μA depending on supply and logic states-low enough for always-on precision applications without power gating.

What is the wiper resistance specification for the AD5206BRZ100?

The wiper resistance (RW) of the AD5206BRZ100 is specified as 50 Ω minimum and 100 Ω maximum at VDD = 5 V, per Table 1's "Wiper Resistance" parameter. This on-resistance contributes directly to total RWB or RWA values and must be included in calculations-for example, at code 0x00, RWB = 50 Ω (not zero), and at full scale, RWB ≈ 100 kΩ + RW.