AFE General Purpose 1ADC 3V/5V 28-Pin TSSOP T/R

The TDC1000 is a fully integrated analog front-end (AFE) for ultrasonic sensing measurements of level, fluid identification/concentration, flow, and proximity/ distance applications common in automotive, industrial, medical, 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 AFE offers programmability and flexibility to accommodate a wide-range of applications and end equipment. The TDC1000 can be configured for multiple transmit pulses and frequencies, gain, and signal thresholds for use with a wide-range of transducer frequencies (31.25kHz to 4MHz) and Q-factors. Similarly, the programmability of the receive path allows ultrasonic waves to be detected over a wider range of distances/tank sizes and through various mediums.Selecting different modes of operation, the TDC1000 can be optimized for low power consumption, making it ideal for battery powered flow meters, level instrumentation, and distance/proximity measurements. The low noise amplifiers and comparators provide extremely low jitter, enabling picosecond resolution and accuracy for zero and low flow measurements.

Automotive AEC-Q100 (TDC1000-Q1)

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 ps_RMS
• Low-Noise and Programmable Gain
  Amplifiers
• Access to Signal Chain for
  External Filter
  Design
• Programmable Threshold Comparator
  for EchoQualification
• 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°C_RMS

Operating Temperature Range: –40°C to 125°C