TDC1000

TDC1000 SNAS648C – OCTOBER 2014 – REVISED FEBRUARY 2023 TDC1000 Ultrasonic Sensing Analog Front End (AFE) for Level Sensing, Flow Sensing, Concentration Sensing, and Proximity Sensing Applications 1 Features Measurement range: up to 8 ms Operating current: 1.8 µA (2 SPS) Transmitter channels TX1/TX2: – Supports single or dual-transducer application – Programmable excitation: 31.25 kHz to 4 MHz, up to 31 pulses Receiver channels RX1/RX2: – STOP cycle-to-cycle jitter: 50 psRMS – Low-noise and programmable gain amplifiers – Access to signal chain for external filter design – Programmable threshold comparator for echo qualification – Automatic channel swapping for differential Time-of-Flight (TOF) measurement – Programmable low power mode for long TOF measurements Temperature measurement – Interface to two PT1000/500 RTDs – RTD-to-RTD matching accuracy 0.02°CRMS Operating temperature range: –40°C to 125°C 2 Applications Measurements through tanks of varying materials: – Fluid level – Fluid identification / concentration Flow metering: water, gas, heat Distance/proximity sensing 3 Description The TDC1000 is a fully integrated analog frontend (AFE) for ultrasonic sensing measurements of level, fluid identification/concentration, and proximity/ distance applications common in automotive, industrial, and consumer markets. When paired with an MSP430/C2000 MCU, power, wireless, and source code, TI provides the complete ultrasonic sensing solution. TI's Ultrasonic ...