Analog Devices Inc. AD5220BRZ10-REEL7

Overview

AD5220BRZ10-REEL7 from Analog Devices is a 7-bit, 128-position digital potentiometer in SOIC-8 package with 10 kΩ end-to-end resistance, ±30% nominal tolerance, and 800 ppm/°C resistor temperature coefficient. It operates from 2.7 V to 5.5 V, draws ≤40 µA supply current, and supports rheostat or potentiometer divider modes for precision gain/offset control in analog signal conditioning circuits.

For engineers reviewing the AD5220BRZ10-REEL7 datasheet, AD5220BRZ10-REEL7 pinout, AD5220BRZ10-REEL7 application, or AD5220BRZ10-REEL7 equivalent, this page delivers verified electrical specs, true pin functions, real-world use cases, and confirmed alternative parts - all grounded in the official AD5220 Rev. A datasheet and Analog Devices' ordering guide.

Technical Context

The AD5220BRZ10-REEL7 implements a resistor string architecture with 128 tap points and a wiper decode logic that directly maps counter state (00H–7FH) to terminal resistance. Its three-wire serial interface uses negative-edge CLK, active-low CS, and level-sensitive U/D to increment/decrement wiper position without external address or data bytes.

It powers on at code 40H (mid-scale), exhibits monotonic operation per guaranteed ±1 LSB DNL, and achieves 20 ppm/°C voltage-divider tempco due to ratiometric operation - distinct from its 800 ppm/°C absolute resistance drift. Bandwidth varies inversely with RAB: 650 kHz at 10 kΩ, 142 kHz at 50 kΩ, and 69 kHz at 100 kΩ.

Key Specifications

Pinout & Package

AD5220BRZ10-REEL7 is housed in an 8-lead SOIC_N (R-8) package per JEDEC MS-012-AA, with 1.27 mm pitch, 5.00 mm × 4.00 mm body, and gull-wing leads. Thermal resistance θJA = 158°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5220BRZ10-REEL7, AD5222BRZ10-REEL7 adds channel count at the cost of footprint and power, while MCP41010-I/P trades interface simplicity for protocol compatibility and resolution - neither is pin-compatible, but both serve overlapping analog trimming roles.

Availability

AD5220BRZ10-REEL7 is available at Aetrix Electronics and suitable for programmable gain amplifiers, DC offset adjustment circuits, LED current control, and reference voltage scaling requiring stable component supply across industrial temperature range (–40°C to +85°C).

Supply support for AD5220BRZ10-REEL7 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, medical, and test equipment where long-term stability, shock resistance, and programmability are essential.

FAQ

What is the maximum operating voltage for AD5220BRZ10-REEL7?

The AD5220BRZ10-REEL7 has an absolute maximum VDD of +7 V, but its specified operational range is 2.7 V to 5.5 V. Exceeding 5.5 V risks violating the guaranteed electrical characteristics - including increased wiper resistance, degraded DNL, and potential latch-up. Always maintain VDD within 2.7 V to 5.5 V for reliable AD5220BRZ10-REEL7 performance across temperature.

Does AD5220BRZ10-REEL7 support I²C or SPI communication?

No, AD5220BRZ10-REEL7 uses a proprietary 3-wire up/down interface (CLK, U/D, CS) - not I²C or SPI. It lacks address lines, data bytes, or bidirectional data transfer. Commands are executed by toggling U/D and pulsing CLK under active CS; no protocol overhead or firmware stack is needed. This makes AD5220BRZ10-REEL7 simpler to drive from basic GPIOs than SPI/I²C potentiometers.

Can AD5220BRZ10-REEL7 be used in AC signal paths?

Yes, AD5220BRZ10-REEL7 supports AC signals up to 650 kHz (at 10 kΩ) with THD < 0.002% at 1 kHz. Its 48 pF wiper capacitance and 10 pF terminal capacitance require careful PCB layout - keep traces short, avoid vias near A/B/W, and use ground guard rings. For best AC performance, operate in potentiometer mode with ratiometric biasing and limit signal swing to ≤VDD to prevent clipping.

What is the power-on default state of AD5220BRZ10-REEL7?

AD5220BRZ10-REEL7 powers on at code 40H (decimal 64), placing the wiper at mid-scale - resulting in approximately equal RWA and RWB (≈5 kΩ each for 10 kΩ device). This state is hardwired and does not require initialization. The counter retains position through power cycles only if external circuitry holds CS low and clocks U/D; otherwise, it resets to 40H on every VDD ramp.

Is AD5220BRZ10-REEL7 RoHS compliant?

Yes, AD5220BRZ10-REEL7 is RoHS compliant, as indicated by the "Z" suffix in the part number per Analog Devices' ordering guide. It meets EU Directive 2011/65/EU requirements, with lead-free terminations and compliant packaging. The "-REEL7" suffix denotes 7-inch tape-and-reel packaging - standard for SMT assembly - and does not affect RoHS status.