Datasheet

Data Sheet AD650
Rev. E | Page 11 of 20
00797-013
OP
AMP
COMP
IN
FREQ
OUT
OUT
ONE
SHOT
8
9
10
11
13
12
7
6
5
4
3
2
1 14
INPUT
OFFSET
TRIM
–0.6V
AD650
–V
S
–V
S
1mA
S1
C
OS
–15V
0.1µF
–V
IN
R1
R3
C
INT
20kΩ
250kΩ
0.1µF
1µF
R2
+15V
+V
LOGIC
DIGITAL
GND
ANALOG
GND
F
OUT
Figure 12. Connection Diagram for V/F Conversion, Negative Input Voltage
00797-014
OP
AMP
COMP
IN
FREQ
OUT
OUT
ONE
SHOT
8
9
10
11
13
12
7
6
5
4
3
2
1 14
INPUT
OFFSET
TRIM
–0.6V
AD650
–V
S
–V
S
1mA
S1
C
OS
–15V
0.1µF
20kΩ
250kΩ
0.1µF
+15V
V
OUT
+5V
ANALOG
GND
F
IN
2kΩ
500Ω
500Ω
560pF
R1
R3
C
INT
1N914
Figure 13. Connection Diagram for F/V Conversion
00797-015
OP
AMP
COMP
IN
FREQ
OUT
OUT
ONE
SHOT
8
9
10
11
13
12
7
6
5
4
3
2
1 14
INPUT
OFFSET
TRIM
–0.6V
AD650
–V
S
–V
S
1mA
S1
51pF
–15V
0.1µF
1000pF
20kΩ
250kΩ
510Ω
0.1µF
+15V
OFFSET
ADJUST
ANALOG
GND PLANE
DIGITAL
GND
F
OUT
0MHz TO 1MHz
+5V
1µF
3.6kΩ
14.3kΩ
V
IN
0V TO 10V
GAIN
ADJUST
5kΩ
Figure 14. 1 MHz V/F Connection Diagram