Analog Devices Inc. AD5220BNZ10

Overview

AD5220BNZ10 from Analog Devices is a 128-position, single-channel digital potentiometer in PDIP-8 package with 10 kΩ end-to-end resistance, ±30% nominal tolerance, and 7-bit resolution. It operates from 2.7 V to 5.5 V, draws as low as 15 µA supply current, and supports rheostat or potentiometer divider modes for precision gain/offset adjustment in analog signal chains.

For engineers reviewing the AD5220BNZ10 datasheet, AD5220BNZ10 pinout, AD5220BNZ10 application, or AD5220BNZ10 equivalent, this page delivers verified electrical specs, true pin functionality, real-world use cases in sensor calibration and power supply trimming, and two validated alternative parts with documented technical and application differences.

Technical Context

The AD5220BNZ10 implements a resistor string architecture with wiper decode logic and a 7-bit up/down counter, initialized to code 40H (mid-scale) at power-on reset. Its three-wire serial interface (CLK, CS, U/D) uses negative-edge clocking and requires external debounce for mechanical inputs.

It supports both rheostat mode (A–W or B–W variable resistance) and potentiometer divider mode (A–B voltage division), with temperature coefficients of 800 ppm/°C (rheostat) and 20 ppm/°C (divider), enabling stable performance across –40°C to +85°C.

Key Specifications

Pinout & Package

AD5220BNZ10 is housed in an 8-lead plastic dual-in-line package (PDIP, N-8), compliant with JEDEC MS-001, with 0.300-inch body width and 0.100-inch lead pitch. Thermal resistance θ_JA is 103°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5220BNZ10, AD5222BRZ10 adds channel count at the cost of layout compatibility and power efficiency, while MCP41010-I/P trades simplicity and ultra-low current for resolution and interface complexity-making AD5220BNZ10 optimal for cost-sensitive, low-power, single-channel trimming where minimal firmware overhead is essential.

Availability

AD5220BNZ10 is available at Aetrix Electronics and suitable for instrumentation calibration, sensor signal conditioning, DC power supply trimming, and audio volume control requiring stable component supply across industrial, medical, and test equipment lifecycles.

Supply support for AD5220BNZ10 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 AD5220 belongs to Analog Devices' precision digital potentiometer product line, designed specifically for replacing mechanical trimmers in industrial control, medical instrumentation, and communications infrastructure where reliability, temperature stability, and long-term calibration retention are critical.

FAQ

What is the power-on wiper position of the AD5220BNZ10?

The AD5220BNZ10 powers on with its wiper at mid-scale (code 40H), resulting in approximately equal resistances RWA and RWB. This behavior is guaranteed by internal POR circuitry and does not require external initialization. The AD5220BNZ10 maintains this state until the first valid CLK pulse is applied with CS low and U/D asserted.

Can the AD5220BNZ10 operate with a 3.3 V supply?

Yes, the AD5220BNZ10 fully supports 3.3 V operation: its supply voltage range is 2.7 V to 5.5 V, and all specifications-including logic thresholds (VIH = 2.1 V min, VIL = 0.6 V max), supply current (15–40 µA), and bandwidth-are guaranteed across this range. The AD5220BNZ10 delivers identical 7-bit resolution and monotonicity at 3.3 V as at 5 V.

Does the AD5220BNZ10 have nonvolatile memory?

No, the AD5220BNZ10 does not include EEPROM or flash memory. Wiper position is volatile and resets to code 40H at each power cycle. This design eliminates write endurance limits, data retention concerns, and programming latency-making the AD5220BNZ10 ideal for applications where settings are reloaded by host firmware on startup.

What is the maximum current rating for the wiper terminal of the AD5220BNZ10?

The AD5220BNZ10 wiper terminal is rated for a maximum continuous current of ±20 mA between any two terminals (A–W, B–W, or A–B), per absolute maximum ratings. However, Analog Devices recommends limiting wiper current to ≤5 mA in direct-contact rheostat mode to prevent contact degradation over time. The AD5220BNZ10's 40–100 Ω wiper resistance helps enforce this limit under typical bias conditions.

Is the AD5220BNZ10 RoHS compliant?

Yes, the AD5220BNZ10 is RoHS compliant, as indicated by the "Z" suffix in its part number per Analog Devices' ordering guide. It meets EU Directive 2011/65/EU and contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE). The AD5220BNZ10 is also qualified to JEDEC J-STD-020 moisture sensitivity level 1.