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The Following Circuits match the search criteria selected above.
–48V Low Side Precision Current Sense “Classic” High-Precision Low Side Current Sense ±5A, 2.5V (2-Quadrant) μModule Voltage Regulator 0A to 2A Current Source 1-Cell Monitor with Bottom-Side Sense 12.5W PWM Heat Source 120W Supply Monitor Includes ICC of LT2940 16-Bit Resolution Unidirectional Current Sense into LTC2433 ADC 2-Terminal Temperature-to-Current Thermometer Suitable for Use at the End of Long Wire Runs 2.7V to 5.5V Precision High Side Current Sense 2.7V to 5.5V Ultra High Precision Current Sense 28V Power to Frequency Converter 3.3V/10mA Regulator from a 4mA to 20mA Loop Micropower Integrating Current Sense 4 - 20mA Loop Transmitter 48V Power Monitor With Opto-Isolated Serial Interface 48V Supply Current Monitor with Isolated Output and 105V Survivability AC Current Measurement AC Power and Current Monitor Adjustable 0W to 10W Load Box with UVLO and Thermal Shutdown Adjustable Two Terminal 200mA Current Source Armature Current Monitor for DC Motor Applications Bidirectional Battery-Current Monitor Bidirectional Current Sense Circuit with Separate Charge/Discharge Output Bidirectional Current Source Bidirectional H-Bridge Monitoring with ADC-Friendly Differential Output Bidirectional H-Bridge Monitoring with Single-Ended Output Circuit Fault Protection with Latching Load Disconnect and Early Warning Indication Circuit Fault Protection with Very Fast Latching Load Disconnect DAC Controlled 100mA Current Source Eight Decade Current Sensing Log Amplifier Full-Bridge Load Current Monitor Fully Isolated AC Power and Current Monitor Ground Referred Precision Current Sources High Accuracy 10mA Current Source High Side Current Sense and Fuse Monitor High Side Current, Input Voltage and Open Fuse Monitoring with a Single LTC4151 High Side Power Sensing with Onboard ADC and I2C High Side Power Sensing with Onboard ADC and I2C High Voltage 100mA Current Source High Voltage/Current and Temperature Monitoring Industrial Sensor 4mA to 20mA Current Loop Power Tap Integrating Watt-Hour Meter Isolated 4 – 20mA Current Loop Isolated Current and Voltage Monitor Isolated Power Line Monitor with 0.5% Accuracy Over 90VAC to 130VAC Input Load Monitor Alarms Above 60W Low Power, Bidirectional 60V Precision Hi Side Current Sense Low Side Current Sense Motor Monitor with Circuit Breaker Motor Protection/Regulation Motor Protection/Regulation Overcurrent and Undervoltage Battery Fault Protection Overcurrent Battery Fault Protection Parallel Current Sources For Higher Current 300mA Output Positive Supply Rail Current Sense With Over-the-Top Op Amp Practical H-Bridge Current Monitor Offers Fault Detection and Bidirectional Load Information Precision Current Sink Precision Current Source Precision Ground Referenced Voltage Controlled Current Source Precision Nanoamp Bidirectional Current Source Precision Voltage Controlled Current Source Programmable Switching 1.5A Current Source Reduced Power Infra-Red Diode Driver Secondary-Side AC Circuit Breaker Self-Powered High Side Current Sense Simple 500V High Side Current Monitor Simple Bidirectional DC Motor Speed Controller Simplified DC Motor Torque Control Simplified DC Motor Torque Control Solenoid Current Monitor for Ground Tied Solenoid Solenoid Current Monitoring Split or Single Supply Operation, Bidirectional Output into A/D Temperature Monitoring with an NTC Thermistor While Measuring Load Current and LTC4151 Supply Current Thermally Controlled NiCad Charger Two Terminal 1A Current Source Two Terminal 3A Current Source Two Terminal 500mA Current Source Two Terminal Current Regulator Two Terminal Current Source Voltage Controlled Current Source Voltage Controlled Current Source with Ground Referred Input and Output Wide Input Range 10W PWM Heat Source
–48V Low Side Precision Current Sense
This amplifier configuration is essentially the complementary implementation to the classic high-side configuration. The op amp used must support common-mode operation at its lower rail. A “floating” shunt-regulated local supply is provided by the Zener diode, and the transistor provides metered current to an output load resistance (1kΩ in this circuit). In this circuit, the output volt-age is referenced to a positive potential and moves downward when representing increasing –48V loading. Scaling accuracy is set by the quality of resistors used and the performance of the NPN transistor.