TLP7820(B-TP4,E

Overview

The TLP7820(B-TP4,E is a single-channel optically isolated amplifier manufactured by Toshiba Semiconductor and Storage. It utilizes sigma-delta analog-to-digital converter technology to provide high-precision signal isolation. The device features a fixed voltage gain of 8.2 V/V with a rank B accuracy tolerance of ±1%. It operates on a single power supply ranging from 3 V to 5.5 V, consuming typical currents of 8.6 mA on the primary side and 6.2 mA on the secondary side. Key electrical specifications include a bandwidth of 230 kHz, an input offset voltage of 900 µV, and a common-mode rejection ratio of 80 dB. The component provides an insulation voltage of 5000 Vrms and supports a wide operating temperature range from -40°C to +105°C.

Feature Summary

• High-precision analog output isolation using sigma-delta conversion technology
• Excellent common-mode transient immunity for noisy environments
• Low power consumption suitable for battery-operated or energy-efficient systems
• Compact SO8L package design facilitating flexible printed circuit board layout

Applications

• Motor phase current sensing in electronic motor drives
• Rail current sensing for power inverters
• Voltage sensing in industrial power conversion systems

Procurement Notes

Verify the specific suffix designation to confirm the gain rank and packaging format. Ensure the ordering code matches the required tolerance level and reel configuration. Cross-reference the manufacturer part number with official distributor catalogs to confirm availability and authenticity before finalizing procurement orders.

Selection Notes

Select this component when precise analog isolation is required for current or voltage monitoring in motor control applications. The fixed gain simplifies circuit design compared to programmable alternatives. Consider the thermal performance and package size constraints when integrating into dense PCB layouts for industrial or automotive inverter systems.

Part Context

This device belongs to the TLP7820 series of optically coupled isolation amplifiers designed for high-performance sensing tasks. It integrates optical isolation with sigma-delta modulation to achieve high linearity and stability. The series is engineered to meet the stringent accuracy and noise rejection requirements of modern industrial automation and renewable energy power conditioning equipment.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs if considering alternative isolation amplifier models.