TOKYO — (BUSINESS WIRE) — September 11, 2015 — Toshiba Corporation’s (TOKYO:6502) Semiconductor & Storage Products Company today announced the launch of optical coupled isolation amplifiers with a delta-sigma AD converter that can detect infinitesimal electric current and voltage fluctuation with high-precision, for use in industrial equipment applications. The new products will be in available in analog output and digital output types, and can be provided in either a low height 2.3mm(max) SO8L thin package or a conventional DIP8 package. Shipment of the new products starts today.

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Toshiba: Optical coupled isolation amplifier equipped with a delta-sigma AD converter (Photo: Business Wire)

Monitoring the phase current of motors and BUS voltage fluctuations for accurate feedback to the microcontroller is essential to realizing the high-precision operation required in recent industrial equipment, including inverters and servo amplifiers. In order to meet these requirements, the new optical coupled isolation amplifiers are equipped with a high-precision delta-sigma AD converter on the input side and achieve the industry’s highest level of linearity^[1], a performance of 0.02%(typ.)@NL200 for the analog output products and 3LSB(typ.)@INL for the digital output products. The isolation amplifiers also secure a CMTI (Common-Mode Transient Immunity) value of 20kV/μs(typ.), enabling stable operation in motor control applications which usually generate high levels of noise. Furthermore, the 5000V(min.) isolation voltage makes them suitable for use in various industrial equipment applications.

Applications:

1. Industrial equipment including inverters, servo amplifiers, robots, CNCs and power supplies
2. Wind turbine and photovoltaic inverters, battery management
3. UPS, power supplies for servers, battery management and air-conditioners for office and residential use