AD645 AD [Analog Devices], AD645 Datasheet - Page 2

• Manufacturer Part Number: AD645
• Description: Low Noise, Low Drift FET Op Amp
• Manufacturer: AD [Analog Devices]

AD645–SPECIFICATIONS
Model
INPUT OFFSET VOLTAGE
INPUT BIAS CURRENT
INPUT VOLTAGE NOISE
INPUT CURRENT NOISE
FREQUENCY RESPONSE
SETTLING TIME
INPUT IMPEDANCE
INPUT VOLTAGE RANGE
OPEN-LOOP GAIN
OUTPUT CHARACTERISTICS
POWER SUPPLY
NOTES
1
2
3
4
5
All min and max specifications are guaranteed.
Specifications subject to change without notice.
Input offset voltage specifications are guaranteed after 5 minutes of operation at T
Bias current specifications are guaranteed maximum at either input after 5 minutes of operation at T
Gain = –1, R
Defined as the time required for the amplifier’s output to return to normal operation after removal of a 50% overload from the amplifier input.
Defined as the maximum continuous voltage between the inputs such that neither input exceeds
Initial Offset
Offset
Drift (Average)
vs. Supply (PSRR)
vs. Supply
Either Input
Either Input
Either Input
Offset Current
Offset Current
Unity Gain, Small Signal
Full Power Response
Slew Rate, Unity Gain
To 0.1%
To 0.01%
Overload Recovery
Total Harmonic
Differential
Common-Mode
Differential
Common-Mode Voltage
Over Max Oper. Range
Common-Mode
Voltage
Current
Rated Performance
Operating Range
Quiescent Current
Transistor Count
@ T
@ T
Distortion
Rejection Ratio
MAX
MAX
LOAD
5
= 2 k .
3
4
2
1
Conditions
T
T
V
V
V
V
V
0.1 to 10 Hz
f = 10 Hz
f = 100 Hz
f = 1 kHz
f = 10 kHz
f = 0.1 to 10 Hz
f = 0.1 thru 20 kHz
V
R
V
R
50% Overdrive
f = 1 kHz
R
V
V
V
T
V
R
T
R
T
V
Short Circuit
# of Transistors
CM
CM
CM
CM
CM
O
LOAD
OUT
LOAD
LOAD
O
DIFF
CM
O
LOAD
LOAD
OUT
MIN
MIN
MIN
MIN
MIN
= 20 V p-p
= 3 V rms
= 10 V
= 0 V
= 0 V
= +10 V
= 0 V
= 0 V
= 10 V
–T
–T
–T
–T
–T
= 20 V p-p
= 10 V
= 1 V
= 2 k
= 2 k
MAX
MAX
MAX
MAX
MAX
2 k
2 k
2 k
1
Min
16
1
90
114
90
(@ +25 C, and
10
10
10
10
5
5
AD645J/A
Typ
100
300
3
110
100
0.7/1.8
16/115
0.8/1.9
0.1
2/6
1.0
20
10
9
8
11
0.6
2
32
2
6
8
5
0.0006
10
10
+11, –10.4
110
100
130
3.0
62
20
11
10
15
15
12
14
1
2.2
Max
500
1000
10/5
3/5
1.0
3.0
50
30
15
10
20
1.1
3.5
18
–2–
15 V dc, unless otherwise noted)
A
= +25 C.
Min
90
16
1
94
90
120
114
94
10
10
10
10
5
5
AD645K/B
Typ
50
100
1
110
100
0.7/1.8 1.5/3
16/115
0.8/1.9
0.1
2/6
1.0
20
10
9
8
0.6
2
32
2
6
8
5
0.0006
10
10
+11, –10.4
110
100
130
3.0
11
62
20
11
10
15
15
12
14
1
2.2
10 V from ground.
A
Max
250
400
5/2
0.5
2.5
40
20
12
10
15
0.8
3.5
= +25 C. For higher temperature, the current doubles every 10 C.
18
Min
94
90
16
1
94
90
120
114
10
10
10
10
5
5
AD645C
1.9
1
Typ
50
75
0.5
110
100
1.8
115
0.1
6
20
10
9
8
11
0.6
2
32
2
6
8
5
0.0006
10
10
+11, –10.4
110
100
130
3.0
62
20
11
10
15
15
12
14
1
2.2
Max
250
300
1
3
0.5
2
40
20
12
10
15
0.8
3.5
18
Min
90
86
16
1
90
86
114
110
10
10
10
10
5
5
AD645S
Typ
100
500
4
110
95
1.8
1800
1.9
0.1
100
1.0
20
10
9
8
11
0.6
2
32
2
6
8
5
0.0006
10
10
+11, –10.4
110
100
130
3.0
62
20
11
10
15
15
12
14
1
2.2
500
1500
1.0
3.3
30
15
10
Max
10
5
50
20
1.1
3.5
18
REV. B
Units
dB
dB
pA
pA
pA
pA
pA
nV/ Hz
nV/ Hz
nV/ Hz
nV/ Hz
fA p-p
fA/ Hz
MHz
kHz
V/ s
%
V
V
V
dB
dB
dB
dB
V
V
mA
mA
V
V
mA
V
V
V/ C
V p-p
s
s
s
pF
pF