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MAX35102: Time-to-Digital Converter Without RTC Data Sheet (Rev. 0)12/12/2014PDF992K
MAX35102
Time-to-Digital Converter Without RTC
Accurate Low-Flow Measurement with Low Power Consumption
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Overview
Features and Benefits
- High-Accuracy Flow Measurement for Billing and Leak Detection
- Time-to-Digital Accuracy Down to 20ps
- Measurement Range Up to 8ms
- 2 Channels—Single-Stop Channel
- High-Accuracy Temperature Measurement for Precise Heat and Flow Calculations
- Up to Four 2-Wire Sensors
- PT1000 and PT500 RTD Support
- 40mK Accuracy
- Maximizes Battery Life with Low Device and Overall System Power
- Ultra-Low 5.5µA ToF measurement and < 125nA Duty-Cycled Temperature Measurement
- 2.3V to 3.6V Single-Supply Operation
- High-Integration Solution Minimizes Parts Count and Reduces BOM Cost
- Small, 4mm x 4mm, 32-Pin TQFN Package
- -40°C to +85°C Operation
Product Details
The MAX35102 is a time-to-digital converter with built-in amplifier and comparator targeted as a low-cost, analog front-end solution for the ultrasonic heat meter and flow meter markets. It is similar to the MAX35101, but with a reduced feature set and without a real-time clock (RTC). The package size has been reduced to 4mm x 4mm x 0.75mm with 0.4mm pin pitch.
With a time measurement accuracy of 20ps and automatic differential time-of-flight (ToF) measurement, this device makes for simplified computation of liquid flow.
Power consumption is the lowest available with ultra-low 5.5µA ToF measurement and < 125nA duty-cycled temperature measurement.
Applications
- Ultrasonic Gas Meters
- Ultrasonic Heat Meters
- Ultrasonic Water Meters
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