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HCPL-7800-000E

Isolation amplifier, 0.05% gain accuracy, 3750Vrms isolation, 100kHz BW, shunt current sensing, DIP-8

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Manufacturer Part：

HCPL-7800-000E

Package：

DIP-8 Wide Body (400 mil, 9.7 x 7.6 x 5.1 mm)

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Description

Product Overview

The HCPL-7800-000E from Broadcom (formerly Avago) is a high-precision isolation amplifier designed for current sensing in motor drive and power conversion applications. It provides galvanic isolation of 3750 Vrms with 0.05% gain accuracy and 0.3 mV input offset voltage. The device is optimized for sensing current through shunt resistors in noisy high-voltage environments.

Key Specifications

Gain Accuracy ±0.05%
Input Offset Voltage 0.3 mV (max)
Isolation Voltage 3750 Vrms
Bandwidth 100 kHz
Supply Voltage 4.5 V to 5.5 V
Supply Current 12 mA (input), 13 mA (output)
CMRR 95 dB (DC)
Operating Temperature -40°C to +85°C
Package DIP-8 (wide body, 400 mil)

Features

  • High-precision gain: ±0.05%
  • Ultra-low input offset voltage: 0.3 mV max
  • Excellent isolation: 3750 Vrms
  • High CMRR: 95 dB at DC
  • 100 kHz signal bandwidth
  • Optimized for shunt resistor current sensing
  • Safety approvals: UL, CSA, IEC

Applications

  • Motor drive phase current sensing
  • Inverter current feedback
  • Switching power supply current monitoring
  • Battery management current measurement
  • Industrial process control

The HCPL-7800-000E is a high-precision isolation amplifier from Broadcom designed specifically for motor drive current sensing and other applications requiring accurate current measurement in the presence of high common-mode voltages. The device amplifies the small differential voltage developed across a shunt resistor while providing 3750 Vrms galvanic isolation between the high-voltage side and the low-voltage measurement side. With ±0.05% gain accuracy and 0.3 mV maximum input offset, it delivers measurement precision comparable to costly closed-loop Hall effect sensors but at a fraction of the cost. The sigma-delta modulation and digital isolation technique ensure excellent noise immunity and long-term stability.

The HCPL-7800-000E uses a sigma-delta analog-to-digital converter on the input side to digitize the differential voltage from the shunt resistor. The digitized signal is transmitted across an optical isolation barrier to the output side, where a DAC reconstructs the analog signal and an output amplifier drives the final voltage output. This approach provides excellent isolation, linearity, and noise immunity. The input amplifier has high common-mode rejection (95 dB at DC) to reject the large common-mode voltages present in motor drive applications. The gain is laser-trimmed to ±0.05% accuracy at the factory. The 100 kHz bandwidth captures the harmonic content of motor currents for accurate field-oriented control (FOC) algorithms.

Pin Name Type Function
1 VIN+ Input Non-inverting differential input
2 VIN- Input Inverting differential input
3 VDD1 Power Input side 5V supply
4 GND1 Power Input side ground
5 GND2 Power Output side ground
6 VOUT Output Analog voltage output
7 VDD2 Power Output side 5V supply
8 VREF Output Reference voltage output (2.5V)
  • Three-phase motor drive current feedback for FOC
  • Solar inverter MPPT current measurement
  • UPS inverter output current monitoring
  • EV/HEV battery current sensing
  • Welding equipment current regulation
Manufacturer Part Number Package Notes
Broadcom HCPL-7840-000E DIP-8 Lower gain accuracy, lower cost
Texas Instruments AMC1301 SOIC-8 Isolated amplifier, 250mV input
Analog Devices ADuM3190 SOIC-16 Isolated error amplifier
Infineon TLE9187QK TSSOP-16 Isolated current sense amplifier
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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