CAT5172: Digital Potentiometer (POT), 256-Tap, SPI Compatible
The CAT5172 is a 256-position linear taper digital POT ideally suited for replacing mechanical potentiometers and variable resistors. Like mechanical potentiometers, the CAT5172 has a resistive element, which can span VCC to Ground or float anywhere between the power supply rails.Wiper settings are controlled through an SPI-compatible digital interface. Upon power-up, the wiper assumes a mid-span position and may be repositioned anytime after the power is stable.The CAT5172 operates from 2.7 V to 5.5 V, while consuming less than 2 µA. This low operating current, combined with a small package footprint, makes the CAT5172 ideal for battery powered portable appliance.
Features- 256-position
- End-to-End Resistance: 50 kΩ, 100 kΩ
- SPI Compatible Interface
- Power-on Preset to Midscale
- Single Supply 2.7 V to 5.5 V
- Low Temperature Coefficient 100 ppm/°C
- Low Power, IDD 2 µA max
- Wide Operating Temperature -40°C to +85°C
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Applications- Potentiometer Replacement
- Transducer Adjustment of Pressure, Temperature, Position, Chemical, and Optical Sensors
- RF Amplifier Biasing
- Gain Control and Offset Adjustment
| End Products |
Data Sheets (1)
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| CAT5172TBI-50GT3 | Active | Pb-free
Halide free | SOT-23-8 | 527AK | 1 | Tape and Reel | 3000 | $0.5333 |
Specifications
| Product | # of Pots | # of Taps | Type | Control Interface | Resistance Typ (kΩ) | VH Max (V) | Wiper Position Memory | VDD Max (V) |
|---|
| CAT5172TBI-50GT3 | 1 | 256 | Potentiometer | SPI | 50 | VCC | No | 5.5 |
