+/- 50V Precision High Bandwidth Isolated Voltage Transducer
Part Number: V50-ISO
Part Number: V50-ISO
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Description
The V50-ISO is a precision high bandwidth voltage transducer that is capable of measuring AC and DC voltages up to ± 50V with ± 1% accuracy. The device is rated 3KV rms galvanic isolation with advanced voltage sensing, common mode decoupling, and isolation technology built-in to ensure safe and accurate high voltage measurement. Excellent dynamic characteristics provide large signal bandwidth of 28 KHz and high common mode rejection of 120 dB @ 60Hz. The V50-ISO is ideal for high voltage sensing that requires high accuracy, fast response, high common mode rejection, wide operating temperatures (- 40 °C to 85 °C ), and a small footprint. The V50-ISO is easy to use and does not require additional components. The device has an internal integrated isolation power supply and circuitry for direct high voltage sensing. Just apply nominal ± 12Vdc power and high voltage to be sensed, the device will output a galvanic isolated voltage signal with voltage attenuation gain of 10. High voltage input pins are “+” and “-” with maximum differential voltage of ± 50V and voltage rated 3KV rms with respect to ground. Operating power supply requirement is ± 12Vdc nominal (range: ± 11V to ± 13V). Pin 1 is +12V input, Pin 2 is -12V input, and pin 3 is ± 12V return. Pin 4 is the output with full scale output voltage of ± 5V. Pins “+”, “-” and Pins 1, 2, 3, 4 are isolated with reinforced insulation of 3KVrms isolation rating. Typical output to input voltage gain is 1:10. The V50-ISO has excellent gain linearity with maximum ± 0.02% nonlinearity. Gain deviation as a function of temperature is typically ± 0.022% /°C. Typical output voltage offset drift is 0.33 mV /°C. High voltage input resistance is typical 6 Kilo-Ohms and it requires very small power from high voltage bus circuit being sensed. For example, power drawn from a 50Vdc high voltage bus is 0.42 watts. The input resistance is optimized with dynamic characteristics, DC characteristics, and thermal performance of the device. The V50-ISO requires small quiescent current (48 mA max) from its +12Vdc input power supply and 0.8 mA max from -12V. The internal integrated isolation power supply is derived from the +12Vdc input to power up high voltage side circuitry. |
FEATURES
· Voltage Measuring Range: 0 to ± 50V · Output Voltage Range: 0 to ± 5V · Both AC and DC Voltage Measurement · Galvanic Isolated Voltage Rating: 3000 Vrms · Very Low Leakage Current:60uA @ 3KVrms 60Hz · Large Signal Bandwidth: 28 KHz · Fast Response Time: < 25 mS · Overall Accuracy: Better than ± 1% of Full-Scale · Low Nonlinearity: ± 0.02% Max · High Common Mode Voltage Rejection: 120 dB · High Input Resistance: 6 KW · Operating Temperature Range: - 40 °C to 85 °C · Low Output Voltage Offset Drift: ± 0.33 mV/°C · Very Low Voltage Gain Drift: ± 0.022% /°C · Operating Power Supply Range: ± 11V to ± 13V · Low Quiescent Current: < 48mA/0.8mA · Built-in Isolated Power Supply · Small Footprint: 1.5” x 1” x 0.5” (38.1x25.4x12.7mm) · Weight: 0.741 oz (21 g) · RoHS Compliant · MTBF 1815 x 10^3 Hrs (25°C), 846 x10^3 Hrs (85°C) · Excellent Water and Thermal Shock Resistance · Flame Retardant (UL 94 V-O) |