TDC-GP2 T&R 2K

Sensor And Detector Interfaces Overview

The TDC-GP2 is a universal time-to-digital converter manufactured by acam-messelectronic gmbh, now part of the ams OSRAM group. It features two measurement channels with a typical resolution of 50 ps RMS and an LSB width of approximately 65 ps at 3.3 V. The device supports Measurement Mode 1 (range 3.5 ns to 1.8 µs) and Measurement Mode 2 (range 500 ns to 4 ms). It includes an integrated temperature measurement unit supporting PT500/PT1000 sensors with 16-bit effective resolution. Power supply requirements are 1.8 V to 3.6 V for the core (Vcc) and 1.8 V to 5.5 V for I/O (Vio), housed in a QFN-32 package.

Sensor And Detector Interfaces Feature Summary

• Dual-channel architecture with high-resolution internal propagation delay measurement
• Integrated temperature sensing capability for platinum resistance thermometers
• Configurable windowing and edge-triggering for precise event capture
• Built-in fire-pulse generator for signal repetition applications

Sensor And Detector Interfaces Applications

• Ultrasonic flow meters and heat meters
• Time-of-flight distance measurement systems
• Precision timing instrumentation

Sensor And Detector Interfaces Procurement Notes

Verify component authenticity through authorized distributors or the manufacturer's official support channels. Confirm that the received units match the specified QFN-32 package and electrical characteristics. Ensure proper handling procedures are followed due to the sensitivity of the analog measurement circuits to power supply noise and layout parasitics.

Sensor And Detector Interfaces Selection Notes

Select this component when sub-nanosecond time interval resolution is required within a compact footprint. Evaluate the trade-off between the 50 ps RMS noise performance and the system's power budget, as the high-speed oscillator draws significant current during active measurement phases. Consider the availability of replacement parts, as this model has been succeeded by newer generations in the product line.

Sensor And Detector Interfaces Part Context

This device belongs to the TDC family from acam-messelectronic gmbh, designed for cost-sensitive industrial applications requiring high precision. It represents a generation of converters utilizing internal gate propagation delays rather than traditional counter-based methods to achieve picosecond-level accuracy without external calibration hardware.

Sensor And Detector Interfaces Replacement Considerations

Public documentation identifies the TDC-GPX series as the direct successor. The TDC-GPX offers enhanced performance metrics including higher data throughput and additional channel configurations. Engineers should review the pinout compatibility and register mapping differences when migrating designs from the TDC-GP2 to the TDC-GPX platform.

Sensor And Detector Interfaces FAQ

What is the maximum measurement range in Measurement Mode 1?

In Measurement Mode 1, the maximum measurement range is 1.8 µs.

How does the TDC-GP2 handle temperature compensation?

It includes an internal temperature measurement unit that can connect to PT500 or PT1000 sensors to monitor thermal drift, allowing for calibration adjustments to maintain timing accuracy.

What is the recommended power supply configuration?

The datasheet recommends using fixed linear voltage regulators for both Vcc and Vio supplies, explicitly advising against switched mode power supplies to prevent interference with the analog measurement circuits.