Data Sheet AD650
Rev. E | Page 3 of 20
SPECIFICATIONS
T = 25°C, V
S
= ±15 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
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 %
f
MAX
= 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 ±75 ±75 ±75 ppm/°C
at 100 kHz ±150 ±150 ±200 ppm/°C
J and K Grades
at 10 kHz ±75 ±75 ppm/°C
at 100 kHz ±150 ±150 ppm/°C
BIPOLAR OFFSET CURRENT
Activated by 1.24 kΩ 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 μs 1 pulse of new frequency plus 1 μs 1 pulse of new frequency plus 1 μs
Overload Recovery Time
Step Input
1 pulse of new frequency plus 1 μs 1 pulse of new frequency plus 1 μs 1 pulse of new frequency plus 1 μs
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 MΩ||10 pF 2 MΩ||10 pF 2 MΩ||10 pF
Common-Mode Impedance 1000 MΩ||10 pF 1000 MΩ||10 pF 1000 MΩ||10 pF
Input Bias Current
Noninverting Input 40 100 40 100 40 100 nA
Inverting Input ±8 ±20 ±8 ±20 ±8 ±20 nA
Input Offset Voltage
(Trimmable to Zero) ±4 ±4 ±4 mV
vs. Temperature (T
MIN
to T
MAX
) ±30 ±30 ±30 µV/°C
Safe Input Voltage ±V
S
±V
S
±V
S
V
COMPARATOR (F/V CONVERSION)
Logic 0 Level −V
S
−1 −V
S
−1 −V
S
−1 V
Logic 1 Level 0 +V
S
0 +V
S
0 +V
S
V
Pulse Width Range
4
0.1 (0.3 × t
OS
) 0.1 (0.3 × t
OS
) 0.1 (0.3 × t
OS
) µs
Input Impedance 250 250 250 kΩ
OPEN COLLECTOR OUTPUT
(V/F CONVERSION)
Output Voltage in Logic 0
I
SINK
≤ 8 mA, T
MIN
to T
MAX
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
