Solution for Current Sensor Calibration-TA1200 High Frequency Transconductance Amplifier

1. Overview of TA1200 High Frequency Transconductance Amplifier

TA1200 is a constant current source that can output a maximum frequency of 1 MHz. It also has a transconductance working mode to achieve linear current output. It can be used to calibrate high-frequency current sensors or test the frequency response bandwidth characteristics of current sensors.

TA1200 can expand the current output range of multi-function sources and calibrate wideband coaxial shunts, transformers, sensors, wideband ammeters and power meters, etc.

2. Features of TA1200 High Frequency Transconductance Amplifier

· Current output range: 1 mA ~ 10.5 A

· Output frequency: DC & 10 Hz ~ 1 MHz

· Working mode: constant current (CC) and transconductance (TA)

· Maximum load voltage: 7 Vrms

· Short-term stability: 0.004%/min @ DC, 0.05%/min @ 100 kHz, 0.1%/min @ 1 MHz

· Transconductance input voltage: 0.2 V ~ 2 V

3. Applications of TA1200 High Frequency Transconductance Amplifier

The key applications of TA1200 High Frequency Transconductance Amplifier include extending the current output range of multifunction calibrators, calibrating wideband coaxial shunts, current transformers, sensors, wideband ammeters, power meters, and testing -3 dB frequency response bandwidth.
With its excellent linearity and low noise performance, the TA1200 is ideal for calibration laboratories and R&D environments requiring precise current signal generation across a broad frequency spectrum.

3.1 Direct measurement method to calibrate low-precision high-frequency current sensor

The TA1200 High Frequency Transconductance Amplifier can serve as a standard current source. When used in combination with a precision digital multimeter, it enables the calibration of low-accuracy, high-frequency current sensors.

3.2 Comparison method to calibrate medium and high precision high frequency current sensors

The TA1200 High Frequency Transconductance Amplifier serves as a high-stability current source to output a constant high-frequency current signal. A high-frequency coaxial shunt and the current sensor under test are connected in series within the current output loop. A precision digital multimeter is then used to measure the secondary output voltage signals of both devices. By comparing the measurement differences between the coaxial shunt and the sensor under test, the metrological performance of medium- to high-accuracy high-frequency current sensors can be calibrated.

3.3 Detection of the frequency response bandwidth characteristics of the current sensor

The TA1200 High Frequency Transconductance Amplifier outputs a high-frequency current signal to the current sensor under test for evaluating its frequency response bandwidth performance.

4. Operation of TA1200 High Frequency Transconductance Amplifier