PGA308TDD2

Sensor And Detector Interfaces Overview

The PGA308TDD2 is a single-supply, auto-zero sensor amplifier die manufactured by Texas Instruments. It functions as a programmable analog sensor signal conditioner designed to amplify sensor signals while performing digital calibration for offset and gain. The device features a one-wire pin-compatible UART interface for programming gain and offset parameters, which are stored in onboard one-time programmable (OTP) memory across seven memory banks. It operates within a supply voltage range of 2.7 V to 5.5 V and supports an operating temperature range from 0°C to +70°C. The component is supplied as an uncase chip with 12 terminals in a rectangular package.

Sensor And Detector Interfaces Feature Summary

• Integrates auto-zero technology to minimize drift and enhance measurement accuracy for bridge sensors.
• Provides digital calibration capabilities for both gain and offset adjustments via a one-wire interface.
• Stores calibration data in non-volatile one-time programmable memory for persistent configuration.

Sensor And Detector Interfaces Applications

• Signal conditioning for resistive bridge sensors such as pressure and force transducers.
• Industrial process control systems requiring precise analog signal amplification.
• Smart sensor modules utilizing three-terminal configurations for integrated programming.

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'D2' against the official Texas Instruments datasheet to confirm it denotes the bare die variant rather than a packaged version. Ensure compatibility with your board-level assembly processes for handling uncase chips. Confirm that the OTP memory programming requirements align with your manufacturing workflow. Check for any RoHS compliance documentation relevant to the specific production lot.

Sensor And Detector Interfaces Selection Notes

Select this component when a bare die solution is required to minimize footprint in compact sensor designs. Choose PGA308TDD2 over packaged variants if custom packaging or integration into a multi-chip module is planned. Consider the one-wire interface constraints if system wiring complexity must be minimized. Evaluate the 2.7 V to 5.5 V supply range against available power rails in the target application.

Sensor And Detector Interfaces Part Context

The PGA308 belongs to a family of programmable sensor signal conditioners that includes packaged versions like the PGA308AIDGST. While other family members offer different packages such as MSOP or TSSOP, the TDD2 designation specifically identifies the die form factor. This allows designers to integrate the signal conditioning circuitry directly into custom sensor assemblies without the space overhead of standard IC packages.

Sensor And Detector Interfaces Replacement Considerations

Direct functional replacements include other PGA308 variants such as PGA308AIDGSR, though these come in packaged formats like MSOP. Verify pinout and electrical specifications carefully when substituting a packaged part for a die, as mechanical integration will differ significantly. No other direct die equivalents are publicly confirmed in the provided documentation.