AD5160BRJ100-R2

Overview

The AD5160BRJZ100-R2 is a single-channel, 8-bit SPI-compatible digital potentiometer manufactured by Analog Devices. It features a nominal end-to-end resistance of 100 kΩ with a linear taper and 256 adjustable tap positions. 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 to 8 µA. It provides a low temperature coefficient of 45 ppm/°C for the resistor element and 15 ppm/°C in potentiometer divider mode. The component is housed in an 8-lead SOT-23 package and supports an operating temperature range from –40°C to +125°C.

Feature Summary

• 256-position resolution with 8-bit digital control via SPI interface
• Nominal resistance of 100 kΩ with ±15% tolerance at 25°C
• Low power consumption with supply current typically between 3 µA and 8 µA
• Power-on preset to midscale (code 0x80) for safe initialization

Applications

• Replacement for mechanical potentiometers in new designs
• Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
• RF amplifier biasing circuits
• Gain control and offset adjustment in signal conditioning chains

Procurement Notes

Verify the ordering suffix to confirm packaging format; -R2 indicates reel packaging while -RL7 indicates cut tape. Confirm RoHS compliance status as indicated by the 'Z' suffix in the part number. Ensure the specific 100 kΩ resistance variant is selected, as other values such as 5 kΩ, 10 kΩ, and 50 kΩ are available within the same family.

Selection Notes

Select this component when a compact, solid-state solution for variable resistance is required. The 100 kΩ value is suitable for applications requiring higher impedance levels compared to the 5 kΩ or 10 kΩ variants. Consider the 45 ppm/°C temperature coefficient for stability requirements. The SOT-23-8 package is ideal for space-constrained PCB layouts.

Part Context

The AD5160BRJZ100-R2 belongs to the AD5160 family of 256-position SPI-compatible digital potentiometers. This family includes variants with different nominal resistances (5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ) and packaging options. The BRJZ designation specifies the industrial temperature grade and SOT-23-8 package type.

Replacement Considerations

Direct pin-compatible substitutes within the same family include AD5160BRJZ50-R2 (50 kΩ), AD5160BRJZ10-R2 (10 kΩ), and AD5160BRJZ5-R2 (5 kΩ). For dual-channel applications, the AD5162 series may be considered, though it requires a different package footprint.