Overview
The TDC1011-Q1 is a single-channel ultrasonic sensing analog front-end (AFE) designed by Texas Instruments. This device is specifically tailored for ultrasonic sensing measurements in various applications, including liquid level sensing, fluid identification/concentration, and proximity/distance measurements. It is fully integrated and offers programmability and flexibility to accommodate a wide range of transducer frequencies and operating conditions. The TDC1011-Q1 is AEC-Q100 qualified, making it suitable for automotive and other demanding environments. When paired with an MSP430 or C2000 microcontroller, it provides a complete ultrasonic sensing solution.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VDD (Analog Supply Voltage) | 2.7 | - | 5.5 | V |
| VIO (Digital Supply Voltage) | 1.8 | - | VDD | V |
| Operating Junction Temperature | -40 | - | 125 | °C |
| Transmitter Output Frequency | 31.25 kHz | - | 4 MHz | - |
| Receiver Channel Jitter | - | 50 psRMS | - | - |
| Power Consumption (Sleep Mode) | - | 0.61 µA | - | - |
| Power Consumption (Continuous Receive Mode) | 2.8 mA | 3 mA | 7.5 mA | - |
| Temperature Measurement Accuracy (PT1000) | - | 1 °C | - | - |
Key Features
- Programmable excitation frequencies from 31.25 kHz to 4 MHz with up to 31 pulses.
- Low-noise and programmable gain amplifiers.
- Programmable threshold comparator for echo qualification.
- Access to the signal chain for external filter design.
- Programmable low power mode for long time-of-flight (TOF) measurements.
- Interface to two PT1000/500 RTDs with high accuracy.
- Operating temperature range from -40°C to 125°C.
- Supports single transducer applications.
- Low jitter, enabling picosecond resolution and accuracy.
Applications
- Liquid level sensing in tanks of varying materials.
- Fluid identification and concentration sensing.
- Proximity and distance measurements.
- Automotive applications (AEC-Q100 qualified).
- Industrial, medical, and consumer markets.
- Battery-powered applications due to low power consumption.
Q & A
- What is the TDC1011-Q1 used for?
The TDC1011-Q1 is used for ultrasonic sensing measurements, including liquid level sensing, fluid identification/concentration, and proximity/distance measurements.
- What is the operating temperature range of the TDC1011-Q1?
The operating temperature range is from -40°C to 125°C.
- What are the programmable excitation frequencies of the TDC1011-Q1?
The programmable excitation frequencies range from 31.25 kHz to 4 MHz.
- Does the TDC1011-Q1 support low power modes?
- What is the typical power consumption in sleep mode?
The typical power consumption in sleep mode is 0.61 µA.
- Can the TDC1011-Q1 be used in automotive applications?
- What types of RTDs does the TDC1011-Q1 support?
- What is the accuracy of the temperature measurement using PT1000 RTDs?
- Does the TDC1011-Q1 have low jitter characteristics?
- How many pulses can the TDC1011-Q1 transmit?
