256-Tap SPI Compatible Digital Potentiometer (DPP™)
The САГ5172 is a 256-posiiion digitally programmable linear taper potentiometer ideally suited for replacing mechanical potentiometers and variable resistors. Like mechanical potentiometers, the СЛТ5172 has a resistive element, which can span V^c to Ground or float anywhere between the power supply rails.
Wiper settings are controlled through an SPI-compatiblc digital interface. Upon power-up. the wiper assumes a mid-span position and may be rcpositioncd anytime after the power is stable.
The САГ5172 operates from 2.7 V to 5.5 V, while consuming less than 2 uA. This low operating current, combined with a small package footprint, make the СЛТ5172 ideal for battery-powered portable appliance.
Features
• 256-position
• End-to-End Resistance: 50 kQ, 100 kQ
• SPI Compatible Interface
• Power-on Preset to Midscalc
• Single Supply 2.7 V to 5.5 V
• Low Temperature Coefficient I0()ppm/°C
• Low Power, Idd 2 иЛ max
• Wide Operating Temperature -40ЭС to +85°C
• RoHS-compIiant SOT-23 8-Lcad (2.9 mm x 3 mm) Package
• This is a Pb-Ercc Device
Typical Applications
• Potentiometer Replacement
• Transducer Adjustment of Pressure, Temperature, Position, Chemical, and Optical Sensors
• RF Amplifier Biasing
• Gain Control and Offset Adjustment