Texas Instruments TPL0102-100PWR

Overview

TPL0102-100PWR from Texas Instruments is a dual-channel, 256-tap digital potentiometer with non-volatile EEPROM storage, 100 kΩ end-to-end resistance, ±0.5 LSB INL in voltage-divider mode, and I²C interface support for precision analog trimming in single- or dual-supply configurations (2.7 V–5.5 V or ±2.25 V–±2.75 V). It serves as a drop-in replacement for mechanical potentiometers in calibration-critical circuits.

For engineers reviewing the TPL0102-100PWR datasheet, TPL0102-100PWR pinout, TPL0102-100PWR application, or TPL0102-100PWR equivalent, key selection considerations include wiper position retention across power cycles, channel-to-channel matching (±2 LSB), ratiometric temperature coefficient (4 ppm/°C), and fast wiper response time (<1 µs).

Technical Context

The TPL0102-100PWR integrates two independent linear-taper digital potentiometers, each configurable as a three-terminal voltage divider or two-terminal rheostat. Its EEPROM stores wiper positions at power-down and auto-recalls them on power-up with <100 µs delay, enabling deterministic startup behavior without host initialization.

It supports standard- and fast-mode I²C (up to 400 kHz), uses A0/A1/A2 address pins for up to eight device addresses on one bus, and features dedicated shutdown control per channel that places the high terminal into high-impedance state-preserving signal integrity in power-gated subsystems.

Key Specifications

Pinout & Package

Package: 14-pin MicroQFN (RUC), 2.00 mm × 2.00 mm body, 0.5-mm pitch, wettable flank terminations.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital potentiometer applications.

Compared with AD5172BRUZ100 and MCP42010-I/P, the TPL0102-100PWR uniquely delivers dual-channel independence, true dual-supply operation, and guaranteed EEPROM recall-enabling zero-host-startup dependency in safety-critical or remote-deployed systems.

Availability

TPL0102-100PWR is available at Aetrix Electronics and suitable for adjustable power supplies, sensor calibration systems, and precision amplifier trimming requiring stable component supply with guaranteed long-term manufacturability and traceable sourcing.

Supply support for TPL0102-100PWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision data conversion and programmable analog solutions.

The TPL0102 product line was designed specifically for high-reliability analog trimming in industrial, medical, and test equipment-emphasizing non-volatility, low tempco, and robust I²C interoperability over raw speed or ultra-low power.

FAQ

What is the maximum I²C clock frequency supported by the TPL0102-100PWR?

The TPL0102-100PWR supports standard-mode I²C up to 100 kHz and fast-mode I²C up to 400 kHz, as specified in Section 6.7 of the SLIS134C datasheet. Timing parameters including tSCH, tSCL, and tSDS are fully characterized across –40°C to +85°C and 2.7 V–5.5 V supply range, ensuring reliable communication without bit errors in noise-prone industrial environments. The TPL0102-100PWR does not support high-speed I²C mode.

Does the TPL0102-100PWR retain its wiper position after power cycling?

Yes-the TPL0102-100PWR stores wiper positions in on-chip EEPROM. Upon power-up, the stored values are automatically recalled into volatile wiper registers within 35–100 µs, as confirmed in Section 6.6. This behavior is enabled by default and requires no host command. The EEPROM endurance is rated for 100,000 write cycles with 100-year data retention at 85°C, making the TPL0102-100PWR suitable for field-calibrated instruments.

Can both potentiometers in the TPL0102-100PWR operate in different modes simultaneously?

Yes-Potentiometer A and Potentiometer B are functionally independent. One can be configured in voltage-divider mode while the other operates in rheostat or shutdown mode, as detailed in Section 7.4. This is controlled via separate register bits in the Access Control Register (ACR) and Wiper Resistance (WR) registers. No timing or electrical coupling exists between channels, enabling mixed-mode operation for complex analog signal chains.

What is the temperature coefficient specification for the TPL0102-100PWR's resistance ratio?

The TPL0102-100PWR has a ratiometric temperature coefficient of 4 ppm/°C in voltage-divider mode, measured with wiper set at mid-scale (code 0x80h), as stated in Section 6.5. This value reflects the stability of the *ratio* between RWL and RHW-not absolute resistance drift-and ensures predictable voltage division across temperature without requiring recalibration. Absolute end-to-end resistance tempco is 92 ppm/°C, but ratiometric performance dominates in most precision applications.

How is the shutdown mode implemented on the TPL0102-100PWR?

Shutdown mode is activated per channel via the SHDN bit in the Access Control Register (ACR). When asserted, it opens the internal switch connecting the high terminal (HA or HB) to the resistive ladder, placing HA/HB in high-impedance state (>10 MΩ). Low and wiper terminals remain functional, allowing biasing or measurement continuity. This feature is documented in Section 7.4.1 and Figure 18 of the SLIS134C datasheet. Shutdown current is ≤1 µA per supply rail.