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GENERAL DESCRIPTION

The TC9400/TC9401/TC9402 are low-cost voltage-to-frequency (V/F) converters utilizing low power CMOS technology. The converters accept a variable analog input signal and generate an output pulse train whose frequency is linearly proportional to the input voltage.

FEATURES

Voltage-to-Frequency

■ Choice of Guaranteed Linearity:

TC9401 ......................................................... 0.01

TC9400 ......................................................... 0.05

TC9402 ......................................................... 0.25

■ DC to 100 kHz (F/V) or 1Hz to 100kHz (V/F)

■ Low Power Dissipation .......................... 27mW Typ

■ Single/Dual Supply Operation .................................+ 8V to + 15V or ±4V to ±7.5V

■ Gain Temperature Stability ..........±25 ppm/°C Typ

■ Programmable Scale Factor

Frequency-to-Voltage

■ Operation ........................................... DC to 100 kHz

■ Choice of Guaranteed Linearity:

TC9401 ......................................................... 0.02

TC9400 ......................................................... 0.05

TC9402 ......................................................... 0.25

■ Programmable Scale Factor

APPLICATIONS

■ μP Data Acquisition

■ 13-Bit Analog-to-Digital Converters

■ Analog Data Transmission and Recording

■ Phase-Locked Loops

■ Frequency Meters/Tachometer

■ Motor Control

■ FM Demodulation