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NJU7664

VOLTAGE CONVERTER FOR GaAs FET

Japan Radio Corporation  

NJU7664

VOLTAGE CONVERTER

FOR GaAs FET

PRELIMINARY

■ GENERAL DESCRIPTION

The NJU7664 is a voltage converter for GaAs FET, which

contains CR oscillation circuit and dual operational amplifiers.

The voltage converter is a circuit operated by the charge pumping

system, and it generates the negative voltage from the positive

power supply. Furthermore the charge pumping capacitor is

incorporated.

Both of two operational amplifiers with the gain resistance which is

set up at -OdB output the negative voltage by the inverted input

voltage.

The NJU7664 realizes to operate the GaAs FET requiring the

negative gate biassing.

■ PACKAGE OUTLINE

NJU7664R

■ FEATURES

• Voltage Converter Operated With The Charge Pumping System

• Charge Pump Capacitor Incorporated

• CR Oscillation Circuit Incorporated

• Wide Operating Voltage

• Output Voltage

VDD = 2.7V to 5.2V

0 to -4.0V (VDD = 5.2V)

• Low Operating Current

• Stand-by Function

1.25mA MAX(VDD = 2.7V)

• C-MOS Technology

• Package Outline

VSP-8

■ PIN CONFIGURATION

■ BLOCK DIAGRAM

Ver.2003-07-18

-1-

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