TDC7201 Texas instruments

TDC7201

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TDC7201

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Описание

The TDC7201 is designed for use with ultrasonic, laser and radar range finding equipment using time-of-flight technique. The TDC7201 has two built-in Time-to-Digital Converters (TDCs) that can be used to measure distance down to 4 cm and up to several kilometers using a simple architecture, which eliminates the need to use expensive FPGAs or processors. Each TDC performs the function of a stopwatch and measures the elapsed time (time-of-flight or TOF) between a START pulse and up to five STOP pulses. The ability to measure simultaneously and individually on two pairs of START and STOP pins using two built-in TDCs offers high flexibility in time measurement design. The device has an internal self-calibrated time base which compensates for drift over time and temperature. Self-calibration enables time-to-digital conversion accuracy in the order of picoseconds. This accuracy makes the TDC7201 ideal for range finder applications. When placed in the Autonomous Multi-Cycle Averaging Mode, the TDC7201 device can be optimized for low system power consumption, which is ideal for battery-powered flow meters. In this mode, the host can go to sleep to save power and wake up when interrupted by the TDC upon completion of the measurement sequence.

Resolution: 55 ps
Standard Deviation: 35 ps
Measurement Range:
- Individual Mode 1: 12 ns to 2000 ns
- Individual Mode 2: 250 ns to 8 ms
- Combined Operation: 0.25 ns to 8 ms
Low Active Power Consumption: 2.7 mA
Supports up to 10 STOP Signals
Autonomous Multi-Cycle Averaging Mode
for Low Power Consumption
Supply Voltage: 2 V to 3.6 V
Operating Temperature –40°C to +85°C
SPI Interface for Register Access

Type	Time-to-digital converter
Number of input channels	2
Supply voltage (min) (V)	2
Supply voltage (max) (V)	3.6
Operating temperature range (°C)	-40 to 85
Interface type	SPI
Rating	Catalog