AS1507-BTDT-100

Digital Potentiometers Overview

The AS1507-BTDT-100 is a dual-channel digital potentiometer featuring 256 tap positions and an integrated high-endurance EEPROM. It provides a linear 100kΩ end-to-end resistance with a temperature coefficient of 90ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V and communicates via a 3-wire SPI-compatible interface supporting data rates up to 5MHz. It includes a mute function, standby mode consuming 100nA, and retains wiper positions upon power-up. Packaged in a 16-pin TQFN (3x3mm) format.

Digital Potentiometers Feature Summary

• Dual 256-tap digital potentiometers with non-volatile EEPROM storage for wiper position retention
• SPI-compatible 3-wire serial interface operating at frequencies up to 5MHz
• Low temperature coefficient of 90ppm/°C and ±0.5LSB INL/DNL in voltage divider mode
• Integrated mute pin for asynchronous zeroing and low-power standby mode (100nA)

Digital Potentiometers Applications

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

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix 'BTDT' corresponds to the tape and reel delivery form as documented in the manufacturer's ordering information table. Confirm that the '100' designation strictly indicates the 100kΩ end-to-end resistance variant. Ensure compatibility with the 16-TQFN package dimensions during PCB layout verification.

Digital Potentiometers Selection Notes

Select this component when a dual-channel configuration with non-volatile memory is required. The 100kΩ resistance value suits applications needing higher impedance levels compared to the 10kΩ or 50kΩ variants. Verify that the system voltage falls within the 2.7V to 5.5V range and that the SPI interface timing requirements align with the controller's capabilities.

Digital Potentiometers Part Context

This part belongs to the AS1507 family of dual digital potentiometers. Other variants include the AS1507-BTDT-10 (10kΩ) and AS1507-BTDT-50 (50kΩ). All share identical pinouts, interfaces, and electrical characteristics except for the end-to-end resistance value. The device replaces discrete mechanical potentiometers in space-constrained surface-mount designs.

Digital Potentiometers Replacement Considerations

Direct functional replacements within the same package are limited to other AS1507 variants with different resistance values (AS1507-BTDT-10 or AS1507-BTDT-50). No alternative manufacturers or cross-reference part numbers are provided in the official documentation.