AD5160BRJZ10-R2

Overview

The AD5160BRJZ10-R2 is a single-channel, 8-bit digital potentiometer from Analog Devices. It provides 256 adjustable tap positions with a nominal end-to-end resistance of 10 kΩ and a linear taper. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, consuming a typical supply current of 3 µA. It features an SPI-compatible 3-wire serial interface for setting the wiper position. The component is housed in a compact SOT-23-8 package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• 256-position resolution with 10 kΩ nominal resistance
• SPI-compatible 3-wire serial interface (CS, CLK, SDI)
• Single supply operation: 2.7 V to 5.5 V
• Low power consumption: 3 µA typical supply current
• Wide operating temperature range: -40°C to +125°C

Applications

• Mechanical potentiometer replacement in new designs
• Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
• RF amplifier biasing
• Gain control and offset adjustment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging type and compliance status. The suffix indicates reel packaging. Confirm RoHS compliance details directly from the datasheet or manufacturer specifications before procurement.

Selection Notes

Select this model for applications requiring a 10 kΩ digital potentiometer with SPI control. Ensure the system voltage falls within the 2.7 V to 5.5 V range. Consider the 15% resistor tolerance and 45 ppm/°C temperature coefficient for precision requirements. Verify that the host microcontroller supports the required SPI timing parameters.

Part Context

This component belongs to the AD5160 family of 256-position digital potentiometers. Other variants in the series offer different resistance values such as 5 kΩ, 50 kΩ, and 100 kΩ. The BRJZ designation indicates the industrial temperature grade and SOT-23-8 package style.

Replacement Considerations

Direct replacements within the same family include AD5160BRJZ5-R2 (5 kΩ), AD5160BRJZ50-R2 (50 kΩ), and AD5160BRJZ100-R2 (100 kΩ). These share identical pinouts and functionality but differ in nominal resistance.

FAQ

What is the default wiper position upon power-up?

The device includes a power-on preset feature that places the wiper at the midscale position (code 0x80) during power-up.

How is the resistance value determined between the wiper and terminal B?

The resistance is calculated using the formula RWB = RAB * (D / 256) + RW, where D is the decimal code loaded into the register, RAB is the nominal resistance (10 kΩ), and RW is the wiper contact resistance.

What are the absolute maximum ratings for the supply voltage?

The absolute maximum rating for VDD to GND is -0.3 V to +7 V. Exceeding these limits may cause permanent damage.