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