TC9401 Microchip Technology, TC9401 Datasheet - Page 11

• Manufacturer Part Number: TC9401
• Description: Voltage-to-Frequency/Frequency-to-Voltage Converters
• Manufacturer: Microchip Technology

FIGURE 5-2:
FIGURE 5-3:
©
2002 Microchip Technology Inc.
(0 to 10V)
Voltage
Input
910k
910k
R
R
1
2
F/S FREQ.
100kHz
10kHz
1kHz
Component Selection
Gain
VOLTAGE TO FREQUENCY
FIXED VOLTAGE - SINGLE SUPPLY OPERATION
R
3
V
0V–10V
Offset
100k
IN
100k
20k
Rp
91k
R
R
2200pF
180pF
4
5
C
27pF
Adjust
REF
Gain
Adjust
Offset
10V
12V
15V
1MΩ
V+
R
Analog Ground
IN
0.9
R
1
1.4MΩ
4700pF
470pF
1MΩ
2MΩ
R
75pF
C
1
5.1VZ
INT
5.1VZ
8.2
820
kΩ
kΩ
0.2
R
5V
D
1µF
D
2
1
pF
2
1
10kΩ
14kΩ
20kΩ
R
2
R
2
V
I
IN
C
2
INT
0.01
µF
0.01
µF
180
pF
0.1µ
100kΩ
100k
1.2k
F
OUT
11
12
C
I
IN
2
6
7
5
3
REF
V+ = 8V to 15V (Fixed)
=
= I
V
I
IN
(V
REF
1
11
12
IN
TC9400
IN
5
3
2
6
7
1
R
– V
IN
Threshold
Detect
Amp Out
C
I
Zero Adjust
GND
V
I
(V
IN
BIAS
REF
REF
2
14
2
4
)
TC9400/9401/9402
– V
+12 to +15V
+
TC9400
7
1
(0.9R
) (C
V
V
9
DD
SS
(V+ – V
14
4
REF
10
8
Common
1
F
+ 0.2R
Output
)
OUT
F
OUT
10kΩ
2
)
/2
1
10kΩ
)
8
10
9
F
F
OUT
OUT
/2
10k
DS21483B-page 11
Digital
Ground
10k
Output
Frequency