AD5222BR10-REEL7

Overview

The AD5222BR10-REEL7 is a dual-channel, 128-position digital potentiometer from Analog Devices. It features two independent variable resistors with a nominal end-to-end resistance of 10 kΩ and a temperature coefficient of –35 ppm/°C. The device operates on a single supply of 2.7 V to 5.5 V or a dual supply of ±2.7 V. It utilizes an increment/decrement interface controlled by Chip Select (CS), Clock (CLK), and Up/Down (U/D) inputs. Key electrical parameters include a maximum power dissipation of 400 mW at 5 V, a settling time of 2 ms for the 10 kΩ version, and a bandwidth of 1 MHz. The unit is housed in an SO-14 surface-mount package.

Feature Summary

• Dual-channel architecture with 128 programmable positions per channel
• Increment/Decrement control interface compatible with mechanical push-buttons
• Nominal resistance options including 10 kΩ with ±30% tolerance
• Low power consumption with maximum supply current of 40 mA

Applications

• Stereo channel audio level control
• Mechanical potentiometer replacement in instrumentation
• Remote incremental adjustment systems
• Programmable voltage-to-current conversion circuits

Procurement Notes

Verify the specific suffix 'REEL7' against manufacturer documentation to confirm tape-and-reel packaging specifications. Ensure compatibility with standard SO-14 footprint dimensions during PCB layout. Confirm that the 10 kΩ resistance value meets the circuit requirements for current handling limits, which must not exceed 20 mA between the wiper and terminal B.

Selection Notes

Select this component when a simple microcontroller-free interface is required using basic logic signals. The 10 kΩ variant offers a balance between bandwidth (1 MHz) and power dissipation. Consider the TSSOP-14 variant if space constraints are critical, as the SO-14 package has higher thermal resistance. Verify that the application does not require non-volatile memory storage, as this device is volatile.

Part Context

This part belongs to the AD5222 family of dual digital potentiometers. It serves as an electronic alternative to mechanical pots in test equipment and industrial controls. Unlike SPI-compatible models such as the AD5203, this device uses a simpler up/down counter interface. The 'BR10' designation indicates the SO-14 package and 10 kΩ resistance value.

Replacement Considerations

Direct pin-compatible replacements within the same series include AD5222BR50, AD5222BR100, and AD5222BR1M, differing only in nominal resistance values. For compact designs, the AD5222BRU10 provides the same functionality in a TSSOP-14 package.