AD5220BN10

Overview

The AD5220BN10 is a single-channel, 7-bit digital potentiometer IC manufactured by Analog Devices Inc. It features a nominal resistance of 10 kΩ with 128 tap positions and volatile memory. The device operates on a supply voltage range of 2.7 V to 5.5 V, consuming a typical supply current of 15 µA at 5 V. It utilizes a three-wire serial interface (CLK, CS, U/D) for control. Key electrical characteristics include a maximum resistor differential nonlinearity of ±1 LSB and a wiper resistance of 40 Ω. The component is housed in an 8-lead Plastic Dual In-Line Package (PDIP, N-8) and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• 7-Bit Resolution: Provides 128 discrete tap positions for precise resistance adjustment.
• Volatile Memory: Wiper position is reset to the center code (40H) upon power-on.
• Up/Down Interface: Controlled via Clock, Chip Select, and Up/Down pins without complex protocol overhead.
• Low Power Consumption: Typical supply current is 15 µA at VDD = 5 V.

Applications

• Programmable Gain Amplifiers
• Voltage Divider Adjustment
• Variable Resistor Replacement in Rheostat Mode

Procurement Notes

Verify the specific package option N-8 (8-Lead PDIP) when sourcing, as the AD5220 family includes SOIC and MSOP variants. Confirm RoHS compliance status if required by assembly specifications. Check for automotive-grade equivalents (AD5220W series) if higher reliability standards are necessary for the target environment.

Selection Notes

Select this model for applications requiring a 10 kΩ nominal resistance value. Ensure the design accommodates volatile memory behavior, as the wiper position resets to mid-scale upon power-up. Verify that the external clock signals meet the minimum slew rate requirements to prevent code skipping due to contact bounce or noise.

Part Context

This component belongs to the AD5220 family of single-channel digital potentiometers. Other variants in the series offer different resistance values (50 kΩ, 100 kΩ) and package types (SOIC, MSOP). The 'BN' suffix indicates the PDIP package, while '10' specifies the 10 kΩ resistance value.

Replacement Considerations

Direct pin-compatible replacements within the same package and resistance value include other AD5220BN10 units. For different resistance values, consider AD5220BNZ50 (50 kΩ) or AD5220BNZ100 (100 kΩ). Automotive applications may require the AD5220WBRZ10 variant.