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.
|Part number||Order||Number of input channels||Interface||Active supply current (Typ) (mA)||Sleep supply current (Typ) (uA)||Supply voltage (Max)||Supply voltage (Min)||Rating||Operating temperature range (C)||Package Group||Package size: mm2:W x L (PKG)||Approx. price (US$)||Features|
||2||SPI||2.7||0.6||3.6||2.0||Catalog||-40 to 85||NFBGA | 25||25NFBGA: 16 mm2: 4 x 4 (NFBGA | 25)||1.35 | 1ku||Time of flight|
||1||SPI||1.35||0.3||3.6||2.0||Catalog||-40 to 85||TSSOP | 14||14TSSOP: 32 mm2: 6.4 x 5 (TSSOP | 14)||0.80 | 1ku||Time of flight|