TDC7201ZAXT

Sensor And Detector Interfaces Overview

The TDC7201ZAXT is a Time-to-Digital Converter (TDC) integrated circuit manufactured by Texas Instruments, designed for high-precision time-of-flight measurements in applications such as LiDAR and range finders. It features two built-in TDC cores capable of measuring elapsed time between a start pulse and up to five stop pulses. The device operates on a supply voltage ranging from 2 V to 3.6 V with an active power consumption of 2.7 mA. It provides a resolution of 55 ps and a standard deviation of 35 ps. The measurement ranges are 12 ns to 2000 ns in Mode 1 and 250 ns to 8 ms in Mode 2, supporting combined operation from 0.25 ns to 8 ms. It utilizes an SPI interface for register access and functions within an operating temperature range of -40°C to +85°C.

Sensor And Detector Interfaces Feature Summary

• Dual TDC architecture enables simultaneous or individual measurement of time intervals using independent ring oscillators and counters.
• Internal self-calibrated time base compensates for drift over time and temperature to maintain picosecond-level accuracy.
• Autonomous multi-cycle averaging mode optimizes system power consumption during extended measurement periods.
• Supports up to ten stop signals across its dual channels for flexible timing configurations.

Sensor And Detector Interfaces Applications

• LiDAR systems
• Range finders
• Advanced driver assistance systems (ADAS)
• Collision detection systems
• Flow meters

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix ZAXT against the manufacturer's current product status documentation. Official sources indicate this specific package variant may be discontinued; confirm availability of equivalent active revisions such as the ZAXR suffix before finalizing procurement plans. Ensure compliance with RoHS3 specifications and check moisture sensitivity level requirements for storage and handling procedures.

Sensor And Detector Interfaces Selection Notes

Select this component when designing systems requiring precise distance measurement down to several centimeters or extending to kilometers. The dual-channel capability allows for complex timing setups involving multiple stop events. Consider the external clock frequency stability, as timing accuracy depends directly on the reference source. Evaluate the need for autonomous averaging modes if low power consumption is a critical design constraint.

Sensor And Detector Interfaces Part Context

The TDC7201ZAXT belongs to the TDC7201 family of time-to-digital converters. It serves as the integrated circuit counterpart to evaluation modules like the TDC7201-ZAX-EVM. This part number specifically denotes the 25-NFBGA (4x4) surface-mount package variant, distinguishing it from other packaging options within the same functional family.

Sensor And Detector Interfaces Replacement Considerations

The TDC7201ZAXR is identified as a manufacturer-recommended alternative with identical functional characteristics but potentially different packaging or reel specifications. Verify pin compatibility and electrical parameters before substitution.