Overview
MS5350 is a high precision time measurement circuit, it has the characteristics of high precision, high stability, high efficiency; Its measurement accuracy is up to 15ps, and the measurement range is from 500ns to 16ms at 4MHz. In the first wave mode, the offset programmable range of the internal comparator is ± 127mV, and an additional ±64mV comparison bias voltage is added. The maximum 8 echo pulses are measured, and the value of 8 echo pulses and the sum of 8 echo pulses have independent result registers after the measurement. This measurement mode not only improves the accuracy, but also greatly reduces the measurement power consumption.
Key Features
- Flow measurement unit
- • Measurement accuracy up to 15ps, 1LSB up to 3.8ps
- • Measuring range from 500ns to 16ms@4MHz
- • Up to 8 echo signals can be measured and 8 echo signals can be measured
- Add them up and put them in the result register
- • With high precision pulse width detection unit
- Analog input circuit
- • Built-in stable low drift precision comparator, Vos 1mV (typical)
- • Built-in programmable comparator bias voltage -64mV62mV
- • Built-in first wave detection with programmable bias voltage up to ±127mV
- • The analog part is turned off at non-measurement times and consumes less than 50nA
- Pulse generation unit
- • Two built-in pulse generators, each generating up to 127 pulses
- • The pulse generator sends pulse frequencies from 62.5kHz2MHz @4MHz
- • Single output current of pulse generator up to 48mA current
- • Two pulse output pins with a single reverse function
- Temperature measuring unit
- • 2 temperature sensors, PT500/PT1000
- • Embedded Schmidt trigger
- • Ultra-low power (when measured every 30 seconds
- 0.08μA)
- Other functions
- • Rising or/and falling edges trigger measurements
- • High-precision STOP shielding window
- • Low power 32kHz oscillator (7μA)
- • 4-wire SPI communication interface
- • Power Supply 2.5V to 3.6V
- • Operating temperature -40°C to +125°C
- • QFN24
Key Features
Ultrasonic range finder
Laser range finder
Ultrasonic obstacle avoidance detection
