TC9400_06 MICROCHIP [Microchip Technology], TC9400_06 Datasheet - Page 6

• Manufacturer Part Number: TC9400_06
• Description: Voltage-to-Frequency/Frequency-to-Voltage Converters
• Manufacturer: MICROCHIP [Microchip Technology]

TC9400/9401/9402
2.0
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
DS21483C-page 6
14-Pin SOIC (Narrow)
14-Pin PDIP/CERDIP
Pin No.
PIN DESCRIPTIONS
10
12
13
14
11
1
2
3
4
5
6
7
8
9
PIN FUNCTION TABLE
AMPLIFIER OUT Output of the integrator amplifier.
PULSE FREQ
THRESHOLD
FREQ/2 OUT
DETECTOR
ZERO ADJ
COMMON
V
OUTPUT
Symbol
REF
V
I
GND
OUT
V
V
BIAS
NC
I
REF
IN
DD
SS
OUT
This pin sets bias current in the TC9400. Connect to V
Low frequency adjustment input.
Input current connection for the V/F converter.
Negative power supply voltage connection, typically -5V.
Reference capacitor connection.
Analog ground.
Voltage reference input, typically -5V.
Frequency output. This open drain output will pulse LOW each time the Freq.
Threshold Detector limit is reached. The pulse rate is proportional to input voltage.
Source connection for the open drain output FETs.
This open drain output is a square wave at one-half the frequency of the pulse output
(Pin 8). Output transitions of this pin occur on the rising edge of Pin 8.
Input to the Threshold Detector. This pin is the frequency input during F/V operation.
No internal connection.
Positive power supply connection, typically +5V.
Description
© 2006 Microchip Technology Inc.
SS
through a 100 kΩ resistor.