Data Sheet
AD650
Rev. E | Page 3 of 20
SPECIFICATIONS
T = 25癈, V
S
= ?5 V, unless otherwise noted.
Table 1.
AD650J/AD650A
AD650K/AD650B
AD650S
Model
Min    Typ
Max    Min    Typ
Max    Min    Typ
Max    Units
DYNAMIC PERFORMANCE
Full-Scale Frequency Range     
1
1
1
MHz
Nonlinearit
1
f
MAX
= 10 kHz
0.002     0.005    
0.002     0.005    
0.002     0.005    %
f
MAX
= 100 kHz
0.005     0.02    
0.005     0.02    
0.005     0.02    %
f
MAX
= 500 kHz
0.02     0.05    
0.02     0.05    
0.02     0.05    %
fMAX = 1 MHz
0.1
0.05     0.1     
0.05     0.1     %
Full-Scale Calibration Error
2
    
100 kHz
?5
?5
?5
%
1 MHz
?10     
?10     
?10     
%
vs. Supply
3
0.015
+0.015   0.015
+0.015   0.015
+0.015
% of
FSR/V
vs. Temperature
A, B, and S Grades
at 10 kHz
?5    
?5    
?5    ppm/?/SPAN>C
at 100 kHz
?50    
?50    
?00    ppm/?/SPAN>C
J and K Grades
at 10 kHz
?5
?5
ppm/癈
at 100 kHz
?50     
?50     
ppm/癈
BIPOLAR OFFSET CURRENT
Activated by 1.24 k?Between
Pin 4 and Pin 5
0.45   0.5
0.55    0.45   0.5
0.55    0.45   0.5
0.55    mA
DYNAMIC RESPONSE
Maximum Settling Time for
Full-Scale Step Input
1 pulse of new frequency plus 1 約   1 pulse of new frequency plus 1 約   1 pulse of new frequency plus 1 約   
Overload Recovery Time
Step Input
1 pulse of new frequency plus 1 約   1 pulse of new frequency plus 1 約   1 pulse of new frequency plus 1 約   
ANALOG INPUT AMPLIFIER
(V/F CONVERSION)
Current Input Range (Figure 4)    0     
+0.6    0     
+0.6    0     
+0.6    mA
Voltage Input Range (Figure 12)   10   
0
10   
0
10   
0
V
Differential Impedance
2 M﹟|10 pF
2 M﹟|10 pF
2 M﹟|10 pF
Common-Mode Impedance     
1000 M﹟|10 pF
1000 M﹟|10 pF
1000 M﹟|10 pF
Input Bias Current
Noninverting Input
40
100    
40
100    
40
100    nA
Inverting Input
?
?0    
?
?0    
?
?0    nA
Input Offset Voltage
(Trimmable to Zero)
?     
?     
?     mV
vs. Temperature (T
MIN
to T
MAX
)   
?0
?0    
?0    礦/癈
Safe Input Voltage
盫
S
盫
S
盫
S
V
COMPARATOR (F/V CONVERSION)    
Logic 0 Level
VS    
1     VS    
1     VS    
1     V
Logic 1 Level
0     
+VS     0     
+VS     0     
+VS     V
Pulse Width Range
4
0.1    
(0.3 ?tOS) 0.1    
(0.3 ?tOS) 0.1    
(0.3 ?tOS) 祍
Input Impedance
250
250
250
k?
OPEN COLLECTOR OUTPUT
(V/F CONVERSION)
Output Voltage in Logic 0
ISINK d 8 mA, TMIN to TMAX
0.4     
0.4     
0.4     V
Output Leakage Current in Logic 1   
100    
100    
100    nA
Voltage Range
5
0     
36     0     
36     0     
36     V