TC9400EJD Microchip Technology, TC9400EJD Datasheet - Page 9

• Manufacturer Part Number: TC9400EJD
• Description: IC V-FREQ/FREQ-V CONV 14CDIP
• Manufacturer: Microchip Technology
• Type: Volt to Freq & Freq to Voltr

Specifications of TC9400EJD

• Frequency - Max: 100kHz
• Full Scale: ±40ppm/°C
• Linearity: ±0.05%
• Mounting Type: Through Hole
• Package / Case: 14-CDIP (0.300", 7.62mm)
• Supply Voltage (max): 15 V
• Supply Voltage (min): 8 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Dual Supply Voltage: +/- 5 V
• Full Scale Frequency: 100 KHz
• Linearity Error: +/- 0.25 % FSR
• Maximum Dual Supply Voltage: +/- 7.5 V
• Minimum Dual Supply Voltage: +/- 4 V
• Mounting Style: Through Hole
• Operating Supply Voltage: 9 V, 12 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TC9400EJDR; TC9400EJDR

TC9400/9401/9402
3.2
Voltage-to-Time Measurements
The TC9400 output can be measured in the time
domain as well as the frequency domain. Some micro-
computers, for example, have extensive timing capabil-
ity, but limited counter capability. Also, the response
time of a time domain measurement is only the period
between two output pulses, while the frequency
measurement must accumulate pulses during the
entire counter time-base period.
Time measurements can be made from either the
TC9400’s PULSE FREQ OUT output, or from the
FREQ/2 OUT output. The FREQ/2 OUT output
changes state on the rising edge of PULSE FREQ
OUT, so FREQ/2 OUT is a symmetrical square wave at
one-half the pulse output frequency. Timing measure-
ments can, therefore, be made between successive
PULSE FREQ OUT pulses, or while FREQ/2 OUT is
high (or low).
© 2007 Microchip Technology Inc.
DS21483D-page 9