TMIS7702

Dual Channel Time-to-Digital Converters for Time-of-Flight Applications in LIDAR, Range Finders, and ADAS

数据表

TMIS7702_DS_EN_V0.4

产品详细信息

特性

说明

·Typical time resolution: 38ps

·Standard Deviation: - 10ps (Mode 1, 100ns) - 50ps (Mode 2, 10μs)

·Measurement Range: - Mode 1: 3ns to 1000ns - Mode 2: 250ns to 8ms - Mode 3: 0ns to 1000ns (with inner delay compensation for dead time) - Mode 4: 250ns to 250ms

·Support up to 5 STOP Signals for each TDC

·Autonomous Multi-Cycle Averaging Mode, up to 128 Sampling Average and Save Host Controller Power

·Support SPI Interface and Multiple Register Accessible

·Power Supply: 2.2V to 3.6V

·Low Current Consumption in Standby Mode with 200μA for each TDC

·Operating Temperature: -40°C to 125°C

·Package: FBGA4x4-25

The TMIS7702 is a two-channel time to digital converters (TDC). It performs the function of a stopwatch and measures the elapsed picoseconds to microseconds between a START pulse and up to five STOP pulses. The ability to measure from START to multiple STOPs gives users the flexibility to select which STOP pulse yields the best echo performance. The device has an internal self-calibrated time base which compensates for drift over time and temperature. Self-calibration enables time-todigital conversion accuracy in the order of picoseconds. The high time resolution and accuracy make TMIS7702 ideal for time-offlight sensing, such as in centimeter accuracy LIADR application and ultrasonic flow metering. TMIS7702 can work in the Autonomous MultiCycle Averaging Mode. In this mode, the host can go to sleep to save power, and it can wake up when interrupted by the TDC upon completion of the measurement sequence. This working mode is optimized for low system power consumption, making it ideal for battery powered flow meters.