Overview
The TDC1000-Q1, produced by Texas Instruments, is a fully integrated analog front-end (AFE) designed for ultrasonic sensing applications. It is AEC-Q100 qualified, making it suitable for automotive, industrial, and consumer markets. This device is optimized for level, fluid identification/concentration, and proximity/distance measurements. When paired with an MSP430/C2000 MCU, it provides a complete ultrasonic sensing solution, including power, wireless, and source code support.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 | 5.5 | V | |
| Operating Temperature Range | –40 | 125 | °C | |
| Measurement Range | 8 ms | |||
| Operating Current (2 SPS) | 1.8 µA | |||
| Transmitter Frequency Range | 31.25 kHz | 4 MHz | ||
| STOP Cycle-to-Cycle Jitter | 50 ps RMS | |||
| RTD-to-RTD Matching Accuracy | 0.02 °C RMS | |||
| Package Type | TSSOP-28 |
Key Features
- Programmable excitation for transmitter channels (TX1/TX2) with frequencies from 31.25 kHz to 4 MHz and 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 power consumption for battery-powered devices.
- Temperature measurement with an interface to two PT1000/500 RTDs and high RTD-to-RTD matching accuracy.
- SPI interface for communication and control.
- Extremely low jitter, enabling picosecond resolution and accuracy for zero and low flow measurements.
Applications
- Fluid level measurement through tanks of varying materials.
- Fluid identification and concentration sensing.
- Flow metering for water, gas, and heat.
- Distance and proximity sensing in automotive, industrial, and consumer applications.
- Battery-powered flow meters, level instrumentation, and distance/proximity measurements.
Q & A
- What is the TDC1000-Q1 used for?
The TDC1000-Q1 is used for ultrasonic sensing measurements of level, fluid identification/concentration, and proximity/distance in automotive, industrial, and consumer applications.
- What is the operating temperature range of the TDC1000-Q1?
The operating temperature range is from –40°C to 125°C.
- What is the measurement range of the TDC1000-Q1?
The measurement range is up to 8 ms.
- What is the power consumption of the TDC1000-Q1 in low power mode?
In low power mode, the device can be optimized for very low power consumption, with an operating current as low as 1.8 µA at 2 SPS.
- What types of transducers can the TDC1000-Q1 support?
The TDC1000-Q1 can support transducers with frequencies ranging from 31.25 kHz to 4 MHz and various Q-factors.
- Does the TDC1000-Q1 support temperature measurement?
Yes, it supports temperature measurement with an interface to two PT1000/500 RTDs and high RTD-to-RTD matching accuracy.
- What is the interface used for communication with the TDC1000-Q1?
The device uses an SPI interface for communication and control.
- How does the TDC1000-Q1 achieve low jitter?
The device features low-noise amplifiers and comparators, enabling extremely low jitter and picosecond resolution and accuracy.
- Is the TDC1000-Q1 AEC-Q100 qualified?
Yes, the TDC1000-Q1 is AEC-Q100 qualified, making it suitable for automotive applications.
- What package type is the TDC1000-Q1 available in?
The TDC1000-Q1 is available in a TSSOP-28 package.
