AS1500 Digital Potentiometer IC
Digital Potentiometer, 256 Steps, Serially Interfaced 10kΩ
Description
The AS1500 is a digital potentiometer with 256 programmable steps. The values of the resistor can be controlled via 3-wire serial interface capable to handle programming rates up to 10MHz. The AS1500 is available in four different resistor values. The AS1500 incorporates a 10kΩ, the AS1501 a 20kΩ, the AS1502 a 50kΩ and the AS1503 a 100kΩ fixed resistor.
The wiper contact taps the fixed resistor at points determined by the 8-bit digital code word. The resistance between the wiper and the endpoint of the resistor is linear. The switching action is performed in a way that no glitches occur. Furthermore the AS1500 includes a shutdown mode, where it consumes less than 5μA. The AS1500 is available in an 8-pin SOIC package.
Key Features
- 256-Position
- Available in four Resistance values
- AS1500 resistance 10kΩ
- AS1501 resistance 20kΩ
- AS1502 resistance 50kΩ
- AS1503 resistance 100kΩ
- Power Shutdown - Less than 1µA
- 3-Wire SPI-Compatible Serial Data Input
- 10MHz Update Data Loading Rate
- 2.7V to 5.5V Single-Supply Operation
- Midscale Preset
- Package SO-8
- Compatible to AD8400
Applications
- Line Impedance Matching
- Volume Control, Panning
- Mechanical Potentiometer Replacement
- Power Supply Adjustment
- Programmable Filters, Delays, Time Constants
Block diagram for AS1500 Digital Potentiometer IC
256 steps, SPI 10kΩ, DigiPot