TLP7820(D4BTP4,E

Overview

The TLP7820(D4BTP4,E is an 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 gain accuracy of ±0.5% with a fixed voltage gain of 8.2 V/V. Key electrical parameters include a bandwidth of 230 kHz, a common-mode rejection ratio of 80 dB, and an input offset voltage of 900 µV. 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. The component offers a minimum insulation voltage of 5000 Vrms and supports a wide operating temperature range from -40°C to +105°C.

Feature Summary

• Employs sigma-delta analog-to-digital converter technology for high-accuracy optical isolation
• Provides stable analog output with a fixed voltage gain rank B specification
• Features high common-mode transient immunity for reliable noise suppression in electrically noisy environments

Applications

• Motor phase current sensing in electronic motor drives
• Power inverter current and voltage sensing
• High-precision industrial control systems requiring galvanic isolation

Procurement Notes

Verify the specific suffix D4BTP4 against official Toshiba documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with required safety certifications such as UL or VDE if applicable to the end equipment. Confirm that the gain rank B matches the system design requirements for precision applications.

Selection Notes

Select this component when designing circuits that require precise analog signal transmission across isolation barriers. The fixed gain of 8.2 V/V simplifies external resistor networks. Consider the 230 kHz bandwidth and low input bias current for applications involving fast-changing signals or high-impedance sensors. Verify thermal management capabilities within the specified operating temperature range.

Part Context

This part belongs to the TLP7820 series of optically coupled isolation amplifiers designed for modern industrial and automotive applications. The series addresses the need for high efficiency and accuracy in motor controllers and power inverters. The TLP7820 variant specifically focuses on providing linear analog output rather than digital modulation, distinguishing it from other members like the TLP7830.

Replacement Considerations

Consult official Toshiba substitution guides for verified alternatives. Generic optocouplers lack the integrated sigma-delta architecture and precision gain characteristics required for direct replacement in high-accuracy sensing applications.