Voltage-to-Frequency/Frequency-to-Voltage Converters
Description
TC9400/9401/9402
Voltage-to-Frequency/Frequency-to-Voltage Converters
Features
VOLTAGE-TO-FREQUENCY
• Choice of Linearity - TC9401: 0.
01% - TC9400: 0.
05% - TC9402: 0.
25% • DC to 100kHz (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
General Description
The TC9400/TC9401/TC9402 are low cost voltage-tofrequency (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.
The devices can also be used as highly accurate frequency-to-voltage (F/V) converters, accepting virtually any input frequency waveform and providing a linearly proportional voltage output.
A complete V/F or F/V system only requires the addition of two capacitors, three resistors, and reference voltage.
FREQUENCY-TO-VOLTAGE
• Operation: DC to 100kHz • Choice of Linearity - TC9401: 0.
02% - TC9400: 0.
05% - TC9402: 0.
25% • Programmable Scale Factor
Package Type
14-Pin Plastic DIP/CERDIP
IBIAS 1 ZERO ADJ 2 IIN 3 VSS 4 VREF OUT 5 GND 6 VREF 7 14 VDD 13 NC
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
TC9400 TC9401 TC9402
12 AMPLIFIER OUT THRESHOLD 11 DETECTOR 10 FREQ/2 OUT 9 OUTPUT COMMON 8 PULSE FREQ OUT
14-Pin SOIC
IBIAS ZERO ADJ 1 2 3 4 5 6 7 14 13 VDD NC AMPLIFIER OUT THRESHOLD DETECTOR FREQ/2 OUT OUTPUT COMMON PULSE FREQ OUT
Device Selection Table
Part Number TC9400COD TC9400CPD TC9400EJD TC9401CPD TC9401EJD TC9402CPD TC9402EJD Linearity (V/F) 0.
05% 0.
05% 0.
05% 0.
01% 0.
01% 0.
25% 0.
25% Package 14-Pin SOIC (Narrow) 14-Pin PDIP 14-Pin CerDIP 14-Pin PDIP 14-Pin CerDIP 14-Pin PDIP 14-Pin CerDIP Temperature Range 0°C to +70°C 0°C to +70°C -40°C to +85°C ...
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