TC9400_06 Datasheet, PDF (1/24 Pages) Microchip Technology – Voltage-to-Frequency/Frequency-to-Voltage Converters

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 100 kHz (F/V) or 1 Hz to 100 kHz (V/F)
• Low Power Dissipation: 27 mW (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 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
Device Selection Table
Part
Linearity
Number
(V/F)
Package
Temperature
Range
TC9400COD
TC9400CPD
TC9400EJD
TC9401CPD
TC9401EJD
TC9402CPD
TC9402EJD
0.05%
0.05%
0.05%
0.01%
0.01%
0.25%
0.25%
14-Pin SOIC 0°C to +70°C
(Narrow)
14-Pin PDIP 0°C to +70°C
14-Pin CerDIP -40°C to +85°C
14-Pin PDIP 0°C to +70°C
14-Pin CerDIP -40°C to +85°C
14-Pin PDIP 0°C to +70°C
14-Pin CerDIP °C to +85°C
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.
The devices can also be used as highly accurate Fre-
quency-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 addi-
tion of two capacitors, three resistors, and reference
voltage.
Package Type
14-Pin Plastic DIP/CERDIP
I_{BIAS 1}
ZERO ADJ 2
I_{IN 3}
V_{SS 4}
V_REF OUT ₅
GND 6
V_{REF 7}
TC9400
TC9401
TC9402
14 V_DD
13 NC
12 ^{AMPLIFIER OUT}
11
THRESHOLD
DETECTOR
10 FREQ/2 OUT
9 OUTPUT COMMON
8 PULSE FREQ OUT
14-Pin SOIC
I_BIAS
ZERO ADJ
I_IN
V_SS
V_REF OUT
GND
V_REF
1
14 V_DD
2
13 NC
3
12 ^{AMPLIFIER OUT}
TC9400
4
TC9401
11
THRESHOLD
DETECTOR
TC9402
5
10 FREQ/2 OUT
6
9 OUTPUT COMMON
7
8 PULSE FREQ OUT
NC = No Internal Connection
© 2006 Microchip Technology Inc.
DS21483C-page 1