Overview
The TDC1000PWR is a fully integrated analog front-end (AFE) designed by Texas Instruments for ultrasonic sensing measurements. It is optimized for applications involving level, fluid identification/concentration, and proximity/distance sensing, commonly used in automotive, industrial, and consumer markets. When paired with an MSP430 or C2000 microcontroller, it provides a complete ultrasonic sensing solution, offering programmability and flexibility to accommodate a wide range of applications and end equipment.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TSSOP-28 |
| Operating Temperature Range (°C) | -40 to 125 |
| Supply Voltage (min) (V) | 2.7 |
| Supply Voltage (max) (V) | 5.5 |
| Number of Input Channels | 2 |
| Gain (min) (dB) | 20 |
| Gain (max) (dB) | 41 |
| Interface Type | SPI |
| Measurement Range | Up to 8 ms |
| Operating Current (2 SPS) | 1.8 µA |
Key Features
- Supports single or dual-transducer applications with programmable excitation frequencies from 31.25 kHz to 4 MHz, up to 31 pulses.
- Low-noise and programmable gain amplifiers with access to the signal chain for external filter design.
- Programmable threshold comparator for echo qualification and automatic channel swapping for differential Time-of-Flight (TOF) measurement.
- Programmable low power mode for long TOF measurements, optimizing for low power consumption in battery-powered devices.
- STOP cycle-to-cycle jitter of 50 ps RMS, enabling picosecond resolution and accuracy.
- Temperature measurement interface to two PT1000/500 RTDs with an RTD-to-RTD matching accuracy of 0.02°C RMS.
Applications
- Time-of-Flight distance measurement systems for accurate and reliable measurements.
- Ultrasonic sensing applications such as object detection and proximity sensing.
- Industrial automation and control systems for monitoring and controlling processes.
- Semiconductor manufacturing for process control and quality assurance.
- Battery-powered flow meters, level instrumentation, and distance/proximity measurements.
Q & A
- Q: What is the measurement range of the TDC1000PWR?
A: The measurement range of the TDC1000PWR is up to 8 ms. - Q: How does the TDC1000PWR handle temperature measurements?
A: The TDC1000PWR interfaces with two PT1000/500 RTDs for temperature measurements, providing an accuracy of 0.02°C RMS. - Q: What is the operating temperature range of the TDC1000PWR?
A: The operating temperature range of the TDC1000PWR is –40°C to 125°C. - Q: Can the TDC1000PWR be used in industrial automation applications?
A: Yes, the TDC1000PWR can be used in industrial automation and control systems for monitoring and controlling processes. - Q: What is the typical operating current of the TDC1000PWR at 2 SPS?
A: The typical operating current of the TDC1000PWR at 2 SPS is 1.8 µA. - Q: What interface type does the TDC1000PWR use?
A: The TDC1000PWR uses an SPI interface. - Q: What is the STOP cycle-to-cycle jitter of the TDC1000PWR?
A: The STOP cycle-to-cycle jitter of the TDC1000PWR is 50 ps RMS. - Q: Can the TDC1000PWR support dual-transducer applications?
A: Yes, the TDC1000PWR supports single or dual-transducer applications. - Q: What is the gain range of the TDC1000PWR?
A: The gain range of the TDC1000PWR is from 20 dB to 41 dB. - Q: How does the TDC1000PWR optimize for low power consumption?
A: The TDC1000PWR can be optimized for low power consumption by selecting different modes of operation, including a programmable low power mode for long TOF measurements.
