Analog Devices Inc. AD5206BRUZ100-RL7

Overview

AD5206BRUZ100-RL7 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 amplifiers and programmable filter tuning.

For engineers reviewing the AD5206BRUZ100-RL7 datasheet, AD5206BRUZ100-RL7 pinout, AD5206BRUZ100-RL7 application, or AD5206BRUZ100-RL7 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 TSSOP-24 package compatibility with industrial temperature range (−40°C to +85°C).

Technical Context

The AD5206BRUZ100-RL7 implements six independent, monotonic 8-bit digitally controlled variable resistors using laser-trimmed thin-film resistor arrays and CMOS switch matrices. Each channel features dedicated address decoding (A2–A0) and retains its resistance setting in nonvolatile latch registers during operation.

It operates in both rheostat (two-terminal) and potentiometer divider (three-terminal) modes, with guaranteed differential nonlinearity of ±0.25 LSB and integral nonlinearity of ±0.5 LSB. Its voltage divider temperature coefficient is 15 ppm/°C-significantly lower than its 700 ppm/°C resistor temperature coefficient-enabling stable ratio-metric performance across temperature.

Key Specifications

Pinout & Package

AD5206BRUZ100-RL7 is housed in a 24-lead TSSOP package (4.4 mm × 7.8 mm, 0.65 mm pitch) with exposed pad for thermal enhancement. Pin 4 is CS (active-low chip select), Pin 8 is SDI (serial data input), Pin 9 is CLK (positive-edge clock), and Pins 1–3/10–24 serve as A/W/B terminals for six channels (RDAC1–RDAC6). GND (Pin 4) and VSS (Pin 9) are separate ground references.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5206BRUZ50-RL7 and MAX5487ETE+T, the AD5206BRUZ100-RL7 offers superior high-impedance biasing capability and SPI daisy-chain scalability, making it optimal for multi-channel calibration in space-constrained industrial instrumentation where 100 kΩ loading and deterministic update timing are critical.

Availability

AD5206BRUZ100-RL7 is available at Aetrix Electronics and suitable for instrumentation calibration, programmable filter design, line impedance matching, and voltage-to-current conversion requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD5206BRUZ100-RL7 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 digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets since 1965.

The AD5206 forms part of Analog Devices' precision digital potentiometer product line, engineered specifically for replacing mechanical trimmers in automated calibration, adaptive filtering, and programmable analog signal conditioning systems.

FAQ

What is the terminal resistance tolerance and temperature coefficient of the AD5206BRUZ100-RL7?

The AD5206BRUZ100-RL7 has a nominal terminal resistance of 100 kΩ with a tolerance of ±30% at 25°C and a temperature coefficient of 700 ppm/°C for absolute resistance. However, in potentiometer divider mode, its voltage output exhibits a much tighter 15 ppm/°C temperature coefficient due to ratio-metric operation-critical for stable gain control across temperature. This specification is confirmed in Table 1 of the Rev. G datasheet under "Voltage Divider Temperature Coefficient."

Does the AD5206BRUZ100-RL7 support dual-supply operation, and what are the valid voltage ranges?

Yes, the AD5206BRUZ100-RL7 supports true dual-supply operation with VDD ranging from +2.3 V to +2.7 V and VSS from −2.7 V to −2.3 V, maintaining |VDD| + |VSS| ≤ 5.5 V. It also operates from a single +2.7 V to +5.5 V supply with VSS = 0 V. These ranges are specified in Table 1 under "Power Dual-Supply Range" and "Power Single-Supply Range," and validated over the full −40°C to +85°C industrial temperature range.

How many bits are in the serial data word for programming the AD5206BRUZ100-RL7, and how is addressing handled?

The AD5206BRUZ100-RL7 uses an 11-bit serial data word: the first three bits (MSB-first) are address bits A2–A0 that decode which of the six RDAC channels (RDAC1–RDAC6) receives the subsequent eight data bits. Address mapping is defined in Table 12 of the datasheet-e.g., "100" selects RDAC5 and "101" selects RDAC6. This structure enables random, channel-specific updates without affecting other channels.

What is the wiper resistance and settling time specification for the AD5206BRUZ100-RL7 at 100 kΩ?

The AD5206BRUZ100-RL7 has a typical wiper resistance of 45 Ω and a maximum wiper settling time of 18 μs (within ±1 LSB error band) when configured with 100 kΩ end-to-end resistance. This value is explicitly listed in Table 1 under "Wiper Resistance" (RW = 50–100 Ω) and "VW Settling Time" (tS = 18 μs for RAB = 100 kΩ), measured at VA = 5 V, VB = 0 V, and VDD = 5 V.

Is the AD5206BRUZ100-RL7 pin-compatible with other variants in the AD5204/AD5206 family, such as the AD5206BRUZ50-RL7?

Yes, the AD5206BRUZ100-RL7 is pin-compatible with all AD5206 variants in the TSSOP-24 package-including AD5206BRUZ10-RL7 and AD5206BRUZ50-RL7-as confirmed by identical pin configurations in Figure 8 and Table 7 of the Rev. G datasheet. Terminal assignments (A1–A6, W1–W6, B1–B6, CS, SDI, CLK, VDD, VSS, GND) are identical; only the internal resistor value differs, requiring no PCB layout change for substitution.