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Precision Current Sensing
Platform Value Proposition
Analog Devices' extensive application-level knowledge combined with best-in-class current sensing solutions enables precise and robust measurement of DC and AC with sensing technologies optimized for specific measurement needs.
This platform offers solutions and signal chains that …
- Are used to measure current in low, medium, and high power applications
- Can interface to variety of industrial current sensors
- Offer input bandwidth measurement from DC to MHz
- Discuss and include generic and application specific examples
Precision Current Sensing
Generic Signal Chains for Current Measurement
- Shunt: Common-Mode
Voltage Level Up to 18 V - Shunt: Common-Mode
Voltage Level Up to 70 V - Shunt: Common-Mode
Voltage Level Up to ±600 V - Shunt: Common-Mode
Voltage Level Up to ±1060 V - Contactless Sensing:
Current Transformer - Contactless Sensing:
Hall 5 V Output
Value Proposition
- Optimized for low offset, high bandwidth and speed, precision measurement of small currents.
Value Proposition
- Optimized for bidirectional current measurements in the presence of PWM-type input common-mode voltages
Value Proposition
- Optimized solution for highly robust, multichannel current measurement applications.
Difference Amplifier
AD8479 Very high common-mode voltage precision difference amplifier
ADC
AD7172-4 Low power, with 4- or 8-channel, 24-bit, 31.25 kSPS, sigma-delta ADC with true rail-to-rail buffers
Isolation
ADuM3471 Isolated switching regulators (3/1 channel directionality)
Ref
ADR4550 Ultralow noise, LDO XFET® 5.0 V voltage reference with current sink and source
Value Proposition
- Optimized for measurement accuracy, with an isolation barrier for increased robustness and safety, offering a good balance between power consumption, size, and design complexity.
ADC
ADuM7703 16-Bit, isolated, sigma-delta ADC
Value Proposition
- Optimized for isolated and robust precision current measurement with a CT sensor.
ADC
AD7606C-16 8-Channel DAS with 16-bit, 1 Msps bipolar input, simultaneous sampling ADC
Ref
ADR4525 Ultralow-noise, high-accuracy 2.5 V voltage reference
Value Proposition
- Optimized for high precision and wide bandwidth Hall-based current measurement.
Resources
Technical Articles
Videos
Current Measurement: Motor Control Inverter
- Shunt: Highest Measurement Precision
- Shunt: Medium Precision and Performance
- High Power Current Transformer Sensor
Value Proposition
- Optimized solution for measurement accuracy. Includes isolation barrier for increased robustness and safety, offering a good balance between power consumption, size, and design complexity.
- ±50 mV and ±250 mV input ranges
- Isolation VIORM = 1060 VPEAK
- Highest CMTI
- Excellent stability over temperature
ADC
ADuM7701 16-Bit, isolated sigma-delta modulator
Value Proposition
- Optimized solution for bidirectional current measurements in the presence of PWM-type input common-mode voltages.
Value Proposition
- Isolated and robust high voltage and high current simultaneous sampling measurement solution optimized for CT (current transformer) sensors.
Resources
Technical Articles
Current Measurement: Grid Monitoring
- Precision CT Measurement
- Precision DC Measurement
Value Proposition
- Optimized for isolated and robust precision current measurement with CT (current transformer)-based current measurement and PT (potential transformer)-based measurement.
Hong Kong, China