AS1506-BTDT-10

Digital Potentiometers Overview

The AS1506-BTDT-10 is a linear, 256-tap digital potentiometer designed to replace discrete mechanical components. It features an end-to-end resistance of 10kΩ and operates on a single supply voltage ranging from +2.7V to +5.5V. The device utilizes a 3-wire SPI-compatible serial interface for communication at data rates up to 5MHz. An internal EEPROM retains the wiper position during power-down, ensuring initialization upon power-up. Key electrical characteristics include a low temperature coefficient of 90ppm/ºC and a standby current of 0.1µA typical. It is housed in an 8-pin TDFN 3x3mm package.

Digital Potentiometers Feature Summary

• 256 tap positions with ±0.5LSB DNL and INL in voltage divider mode
• High endurance EEPROM supporting up to 10M write cycles and 150 years data retention at 85°C
• Low-power standby mode with typical current consumption of 100nA
• Integrated power-on reset circuitry loads stored wiper position automatically

Digital Potentiometers Applications

• Mechanical potentiometer replacement
• Low-drift programmable gain amplifiers
• LCD contrast control
• Low-drift programmable filters

Digital Potentiometers Procurement Notes

Verify the specific ordering code AS1506-BTDT-10 against manufacturer documentation to confirm the 10kΩ resistance variant. Ensure compatibility with the 8-pin TDFN 3x3mm footprint during PCB layout. Confirm that the system design accommodates the 2.7V to 5.5V supply range and SPI timing requirements. Check for RoHS compliance status if required by local regulations.

Digital Potentiometers Selection Notes

Select this component when a non-volatile, digitally adjustable resistor is required with high linearity. The 10kΩ value is suitable for applications requiring moderate impedance levels. Consider the 90ppm/ºC temperature coefficient for precision circuits. The 8-bit resolution provides 256 distinct steps, which may be sufficient for general volume or bias adjustments but verify against application resolution needs.

Digital Potentiometers Part Context

The AS1506 series includes variants with 10kΩ, 50kΩ, and 100kΩ end-to-end resistances. The BTDT suffix indicates the Tape and Reel delivery form factor. This part belongs to a family of SPI-controlled digital potentiometers aimed at replacing mechanical pots in space-constrained designs. The exposed pad on the package is not internally connected and should be left floating.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same family include AS1506-BTDT-50 (50kΩ) and AS1506-BTDT-100 (100kΩ). Verify that the alternative resistance value meets the circuit's impedance requirements. No other cross-manufacturer substitutes are confirmed in the provided documentation.