TC9402 TELCOM [TelCom Semiconductor, Inc], TC9402 Datasheet - Page 9

• Manufacturer Part Number: TC9402
• Description: VOLTAGE-TO-FREQUENCY/FREQUENCY-TO-VOLTAGE CONVERTERS
• Manufacturer: TELCOM [TelCom Semiconductor, Inc]

VOLTAGE-TO-FREQUENCY/
FREQUENCY-TO-VOLTAGE CONVERTERS
TELCOM SEMICONDUCTOR, INC.
VOLTAGE
(0 to 10V)
COMPONENT SELECTION
F/S FREQ.
INPUT
100 kHz
10 kHz
910k
910k
1 kHz
R1
R2
V IN
0V–10V
GAIN
ADJUST
2200pF
R3
180pF
OFFSET
ADJUST
C
27pF
OFFSET
GAIN
10V
12V
15V
100k
REF
V +
1M
R IN
100k
91k
20k
Rp
R4
R5
0.9
R 1
1.4 M
4700pF
ANALOG GROUND
470pF
1 M
2 M
75pF
C
R 1
INT
8.2
k
k
Figure 4 . Fixed Voltage — Single Supply Operation
0.2
R 1
5V
820
pF
2
10k
14k
20k
R 2
5.1VZ
5.1VZ
D2
D1
R 2
1 F
I IN
V 2
Figure 5.
0.01
0.01
180
pF
F
F
100 k
C INT
f OUT = I IN
0.1
11
12
1.2k*
100k
I IN =
2
6
7
5
3
C REF
V + = 8V TO 15V (FIXED)
V REF
I IN
Voltage to Frequency
1
(V IN –V 2 )
R IN
11
12
TC9400
5
3
2
6
7
1
(V 2 – V 7 ) (C REF )
THRESHOLD
DETECT
AMP OUT
C REF
I IN
ZERO
ADJUST
GND
V REF
I BIAS
14
4
+
+12 to +15V
TC9400
1
(0.9 R 1 +0.2 R 1 )
V SS
V DD
9
COMMON
14
4
(V + –V 2 )
OUTPUT
10
8
f OUT /2
f OUT
10k
8
10
9
10k
f OUT
f OUT /2
10k
10k
DIGITAL
GROUND
OUTPUT
FREQUENCY
TC9400
TC9401
TC9402
3-295
1
2
3
4
5
6
7
8