Analog Devices Inc. AD5206BRUZ50

Overview

AD5206BRUZ50 from Analog Devices is a 6-channel, 256-position digital potentiometer with 50 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 adjustment in instrumentation and programmable filter tuning.

For engineers reviewing the AD5206BRUZ50 datasheet, AD5206BRUZ50 pinout, AD5206BRUZ50 application, or AD5206BRUZ50 equivalent, key selection criteria include channel count (6), terminal resistance (50 kΩ), wiper settling time (9 μs at 50 kΩ), voltage divider temperature coefficient (15 ppm/°C), and TSSOP-24 package compatibility with industrial −40°C to +85°C operation.

Technical Context

The AD5206BRUZ50 implements six independent 8-bit digitally controlled variable resistors, each with a fixed A–B resistance of 50 kΩ and a wiper that taps linearly across 256 positions. Each channel has its own latch updated via an 11-bit serial word (3 address + 8 data bits) decoded by CS edge.

It supports both rheostat (A–W or B–W) and potentiometer divider (A–W–B) configurations, with guaranteed monotonicity, 700 ppm/°C resistor tempco, and 15 ppm/°C voltage-divider tempco in divider mode. The device includes dedicated PR (preset) and SHDN (shutdown) control pins, and operates with CMOS-level logic inputs referenced to GND.

Key Specifications

Pinout & Package

AD5206BRUZ50 is housed in a 24-lead TSSOP package (4.4 mm × 7.8 mm, 0.65 mm pitch) with exposed pad for thermal performance. Pin functions are defined per AD5206 SOIC/TSSOP configuration (Figure 8, Table 7).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5206BRUZ10 and AD5206BRUZ100, the AD5206BRUZ50 offers the optimal trade-off for general-purpose instrumentation: mid-range resistance enables robust noise immunity without sacrificing bandwidth or power efficiency, and its 9 μs settling supports dynamic recalibration in closed-loop systems.

Availability

AD5206BRUZ50 is available at Aetrix Electronics and suitable for instrumentation gain control, programmable filter tuning, offset calibration, and line impedance matching requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for AD5206BRUZ50 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 AD5206BRUZ50 belongs to Analog Devices' precision digital potentiometer product line, engineered for replacement of mechanical trimmers in automated calibration, sensor conditioning, and programmable analog signal path control.

FAQ

What is the terminal resistance tolerance and temperature coefficient of the AD5206BRUZ50?

The AD5206BRUZ50 has a nominal terminal resistance of 50 kΩ with a tolerance of ±30% at 25°C and a temperature coefficient of 700 ppm/°C for the A–B resistor. In potentiometer divider mode, the voltage-ratio temperature coefficient improves to 15 ppm/°C due to ratiometric operation - a key advantage over absolute-resistance configurations. This spec is confirmed in Table 1 of the Rev. G datasheet under "Resistance Temperature Coefficient" and "Voltage Divider Temperature Coefficient."

Does the AD5206BRUZ50 support dual-supply operation, and what are the voltage limits?

Yes, the AD5206BRUZ50 supports true dual-supply operation with VDD = +2.7 V and VSS = −2.7 V (±2.7 V), provided the absolute sum |VDD| + |VSS| remains ≤5.5 V. It also operates from +2.7 V to +5.5 V single supply with VSS = 0 V. These ranges are specified in the "Power Supply Sensitivity" and "Absolute Maximum Ratings" tables (Rev. G, pp. 3 and 6), and validated across −40°C to +85°C.

How many bits does the AD5206BRUZ50 use for wiper positioning, and what is the resulting step resolution?

The AD5206BRUZ50 uses an 8-bit data word for wiper positioning, providing 256 discrete steps across the full resistance range. This yields a step resolution of approximately 0.39% of full scale (1/256). The 8-bit latch is loaded via an 11-bit serial word (3 address + 8 data bits), as defined in Table 8 and Figure 31 of the Rev. G datasheet - ensuring deterministic, channel-specific programming.

Can the AD5206BRUZ50 be used in shutdown mode while preserving programmed settings?

Yes. When the SHDN pin is asserted (logic low), the AD5206BRUZ50 opens all Terminal A connections and shorts each wiper to its corresponding Terminal B, reducing supply current to ≤5 μA. Critically, all RDAC latch contents (wiper positions) are retained during shutdown, so settings restore immediately upon exit - no reprogramming is needed. This behavior is documented in the "Theory of Operation" section (Rev. G, p. 13) and Table 11.

Is the AD5206BRUZ50 pin-compatible with other members of the AD5204/AD5206 family?

Yes - the AD5206BRUZ50 shares identical pinout, interface protocol, and package (TSSOP-24) with all AD5206 variants (e.g., AD5206BRUZ10, AD5206BRUZ100) and is functionally compatible with AD5204 devices in 24-lead SOIC/TSSOP packages. Address decoding (Table 12) and serial command structure are identical across the family, enabling drop-in substitution where resistance value and settling time meet design requirements.