The TPL1401 is a 256-tap high precision digital potentiometer (digipot) with buffered taps

The TPL1401 is an AZ431AN-BTRE1 digital potentiometer (digipot) with buffered taps. Unlike standard digital potentiometers, this device provides higher load regulation in voltage divider applications through integrated buffer taps.

The TPL1401 makes factory calibration and trimming easier by integrating non-volatile memory (NVM) and a simple I 2 C digital interface for communicating with the device. The device supports I 2 C standard mode (100 kbps), fast mode (400 kbps) and fast mode plus (1 Mbps).

The TPL1401 operates using the internal reference or power supply as the reference and provides a full-scale output of 1.8 V to 5.5 V. The device also includes a wiper lock function, a feedback (FB) pin application for sinking current, and two bytes of user-programmable NVM space. The TPL1401 features a power-on reset (POR) circuit that ensures that all registers start with default settings or user-programmed settings using NVM. The digital pot output powers up in high impedance mode (default); this setting can be programmed to 10kΩ-GND using the NVM.

The TPL1401 is a small, feature-rich, and easy-to-use building block device that can be integrated into many applications.

The operating temperature range of the TPL1401 is –40°C to +125°C.

characteristic:

256-bit digital potentiometer for voltage divider applications

1 LSB INL and DNL

●Wide range of work

○ Power supply: 1.8 V to 5.5 V

○Temperature range: –40°C to +125°C

●Snubber taps for improved load regulation

●FB pin for precision current sink applications

The wiper lock function prevents accidental writing to the digital potentiometer

●I2C interface

○ Standard, Quick and Quick Plus modes

○ 1.62-VV IH, V DD = 5.5 V

●User programmable non-volatile memory (NVM/EEPROM)

○ Save and recall all register settings

●Internal reference

Very low power consumption: 0.2 mA at 1.8 V

●Flexible start: high impedance or 10K-GND

Micro package: 8-pin WSON (2 mm × 2 mm)

application:

●Exit and emergency lighting

●Scanning machine

●Bar code reader

●Smart speakers

●Video doorbell

●Cordless vacuum cleaner

●Robot lawn mower

●Laser rangefinder

parameter:

Number of steps: 256

Number of channels (#): 1

Interface type: I2C

Memory: Non-volatile

Operating temperature range (°C): -40 to 125