Toshiba Launches Optical Coupled Isolation Amplifiers with Delta-Sigma AD Converter

Toshiba America Electronic Components, Inc. (TAEC)*, a committed leader that collaborates with technology companies to create breakthrough designs, today announced the launch of two new optical coupled isolation amplifiers with a delta-sigma AD converter.

The new TLP7820 and TLP7920 can detect small electric current and voltage fluctuations with high-precision, and are suitable for use in industrial equipment applications, including inverters, servo amplifiers, robots and power supplies.

Toshiba's new optical coupled isolation amplifiers are suitable for use in industrial equipment applications, including inverters, servo amplifiers, robots and power supplies.

Factory automation equipment operates with a high degree of precision, requiring feedback to the microcontroller to be extremely accurate when it comes to the status of the phase current of the motor or the variation of the bus voltage. To meet these requirements, Toshiba has equipped the new photocouplers with a delta-sigma analog to digital converter at the input side, which enables the industry's highest level of linearity[1] (0.02 percent (typ.)@NL200 for analog output products and 3LSB(typ.)@INL for digital output products).

The isolation amplifiers also secure a CMTI (Common-Mode Transient Immunity) value of 20kV/ƒÊs (typ.), enabling stable operation in electrically noisy environments making them suitable for motor control applications. Isolation is through an optical barrier with an isolation voltage of 5000Vrms (min.). Operating temperature range is -40 to +105 degrees C.

A choice of two package types is available: TLP7920/TLP7930 is supplied in an industry standard DIP8 package, and TLP7820/TLP7830 comes in a new, more compact SO8L package, which takes up 30 percent less board space and has a 40 percent lower profile.

Line-up and Key Specifications:

Analog output products

Part Number

TLP7820

TLP7920

Package

SO8L

DIP8

Output Type

Single phase output = 0~2.5V

Operation Temperature

-40 to 105 degrees C

Input Voltage Range

+200mV / +300mV (FSRj

Non-linearityiNL200j

m+200mVn

0.02“(typ.j

Gain Error

iTa=25 degrees Cj

+0.5 / +1 / }3%

Supply Current(Input)

8.6mA (typ.)

Common Mode Transient Immunity

20kV/ƒÊs(typ.) @ VCM=1kV, Ta25 degrees C

Isolation Voltage

5000Vrms

Digital output products

Part Number

TLP7830

TLP7930

Package

SO8L

DIP8

Output Type

1bit digital / CLK Output

Operation Temperature

-40 to 105 degrees C

Input Voltage Range

+200mV / +320mV (FSR)

Integral Non-linearity (INL200j

3LSB(typ.j

Gain Error

iTa=25 degrees Cj

+1% (min/maxj

Supply Current (Input)

8.5mA (typ.j

Common Mode Transient Immunity

20kV/ƒÊs(typ.) @ VCM=1kV, Ta25 degrees C

Isolation Voltage

5000Vrms

Pricing and Availability
Toshiba's new photocouplers are available now. Please contact your local Toshiba Sales Office for samples.

[1] As of September 11, 2015. Toshiba survey.

Source: http://www.toshiba.com/

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