TDC1011 Ultrasonic Sensing Analog Front End

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            TDC1011 Ultrasonic Sensing Analog Front End
                    Texas Instruments offers its single channel ultrasonic sensing analog front end (AFE) for level and ID sensing 
    

Image of Texas Instruments' TDC1011 Ultrasonic Sensing Analog Front End Texas Instruments' TDC1011 is a fully integrated analog front end (AFE) for ultrasonic sensing measurements of liquid level, fluid identification/concentration, 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 TDC1011 can be configured for multiple transmit pulses and frequencies, gain, and signal thresholds for use with a wide-range of transducer frequencies (31.25 kHz to 4 MHz) 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 TDC1011 can be optimized for low power consumption, making it ideal for battery-powered applications. The low-noise amplifiers and comparators provide extremely low jitter, enabling picosecond resolution and accuracy.

Features

Measurement range: up to 8 ms
Operating current: 1.8 µA (2 SPS)
Transmitter channel TX
Supports single transducer applications
Programmable excitation: 31.25 kHz to 4 MHz, up to 31 pulses
Temperature measurement
Interface to two PT1000/500 RTDs
RTD-to-RTD matching accuracy 0.02°C_RMS

Receiver channel RX
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 echo qualification
Programmable low-power mode for long TOF measurements
Operating temperature range: -40°C to 125°C