TI VFC32SMQ

The VFC32 monolithic voltage-to-frequency and frequency-to-voltage converter provides a simple low cost method of converting analog signals into digital pulses. The digital output is an open collector and the digital pulse train repetition rate is proportional to the amplitude of the analog input voltage. Output pulses are compatible with TTL and CMOS logic families. The converter requires two external resistors and two external capacitors to operate. Full scale frequency and input voltage are determined by one resistor (in series with -IN) and two capacitors (one-shot timing and input amplifier integration). High linearity is achieved with relatively few external components, e.g., ±0.01% at 10kHz. The other resistor is a non-critical open collector pull-up (four to +VCC). The VFC32 is available in three models and two package configurations. The TO-100 versions are hermetically sealed, and specified for the -25°C to +85°C and -55°C to +125°C ranges. The plastic DIP and SOIC are specified from 0°C to +70°C

• RELIABLE MONOLITHIC CONSTRUCTION
• HIGH LINEARITY: ±0.01% max at 10kHz FS ±0.05% max at 100kHz FS
• V/F or F/V CONVERSION
• 6-DECADE DYNAMIC RANGE
• VOLTAGE OR CURRENT INPUT
• OUTPUT TTL/CMOS COMPATIBLE
• INEXPENSIVE A/D AND D/A CONVERTER
• TWO-WIRE DIGITAL TRANSMISSION WITH NOISE IMMUNITY
• FM MOD/DEMOD OF TRANSDUCER SIGNALS
• PRECISION LONG TERM INTEGRATOR
• HIGH RESOLUTION OPTICAL LINK
• AC LINE FREQUENCY MONITOR
• MOTOR SPEED MONITOR

• DIGITAL PANEL METERS