AD640(RevD) Просмотр технического описания (PDF) - Analog Devices
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производитель
AD640 Datasheet PDF : 19 Pages
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AD640–SPECIFICATIONS
DC SPECIFICATIONS (VS = ؎5 V, TA = +25؇C, unless otherwise noted)
Model
Parameter
TRANSFER FUNCTION1
SIGNAL INPUTS (Pins 1, 20)
Input Resistance
Input Offset Voltage
vs. Temperature
Over Temperature
vs. Supply
Input Bias Current
Input Bias Offset
Common-Mode Range
INPUT ATTENUATOR
(Pins 2, 3, 4, 5 and 19)
Attenuation2
Input Resistance
SIGNAL OUTPUT (Pins 10, 11)
Small Signal Gain3
Peak Differential Output4
Output Resistance
Quiescent Output Voltage
LOGARITHMIC OUTPUT5 (Pin 14)
Voltage Compliance Range
Slope Current, IY
Accuracy vs. Temperature
Accuracy vs. Supply
Intercept Voltage6, VX
vs. Temperature
Over Temperature
vs. Supply
Logarithmic Offset
(Alt. Definition of VX)
vs. Temperature
Over Temperature
vs. Supply
Intercept Voltage Using Attenuator
Zero Signal Output Current7
ITC Disabled
Maximum Output Current
APPLICATIONS RESISTORS
(Pins 15, 16, 17)
DC LINEARITY
VIN ±1 mV to ± 100 mV
TOTAL ABSOLUTE DC
ACCURACY
VIN = ± 1 mV to ±100 mV8
Over Temperature
Over Supply Range
VIN = ± 0.75 mV to ±200 mV
Using Attenuator
VIN = ± 10 mV to ± 1 V
Over Temperature
VIN = ± 7.5 mV to 2 V
POWER REQUIREMENTS
Voltage Supply Range
Quiescent Current9
+VS (Pin 12)
–VS (Pin 7)
Conditions
Differential
Differential
TMIN to TMAX
AD640J
Min Typ Max
AD640B
Min Typ Max
AD640T
Min Typ Max
IOUT = IY LOG |VIN/VX| for VIN = ± 0.75 mV to ± 200 mV dc
500
50 500
0.8
2
7
1
–2
25
+0.3 –2
500
50
200
0.8
2
7
25
1
+0.3 –2
500
50 200
0.8
300
2
7
25
1
+0.3
Pin 5 to Pin 19
20
20
20
Pins 5 to 3/4
300
300
300
Either Pin to COM
Either Pin to COM
50
± 180
75
–90
50
± 180
75
–90
50
± 180
75
–90
TMIN to TMAX
+VS = 4.5 V to 7.5 V
TMIN to TMAX
±VS = 4.5 V to 7.5 V
TMIN to TMAX
±VS = 4.5 V to 7.5 V
Pin 8 to COM
–0.3
+VS –1 –0.3
0.95 1.00 1.05 0.98
0.002
0.08 1.0
0.85 0.99 1.15 0.93
0.5
2
+VS –1 –0.3
1.00 1.02 0.98
0.002
0.96
0.08 0.4
0.99 1.05
0.93
0.5
0.90
2
–61.5 –60.0 –58.7 –60.5 –60.0 –59.5
0.004
0.004
0.017
8.25 10.0 11.75 9.0
–0.2
–0.27
2.3
0.017
10.0 11.0
–0.2
–0.27
2.3
–60.5
–60.9
9.0
1.00
0.002
0.08
0.99
0.5
2
VS –1
1.02
1.02
0.4
1.05
1.10
–60.0
0.004
0.017
10.0
–0.2
–0.27
2.3
–59.5
–59.1
11.0
1.000
0.995 1.000 1.005 0.995 1.000 1.005
0.35 1.2
0.35 0.6
0.35 0.6
TMIN to TMAX
±VS = 4.5 V to 7.5 V
TMIN to TMAX
0.55 2
3
2
1.0 3
0.4 2.5
0.6 3
1.2 3.5
0.55 1.2
2.0
1.5
1.0
2.0
0.4
1.5
0.6
2.2
1.2
2.5
0.55 1.2
2.0
1.5
1.0 2.0
0.4 1.5
0.6 2.2
1.2 2.5
TMIN to TMAX
TMIN to TMAX
؎4.5
9
35
؎7.5 ؎4.5
15
9
60
35
؎7.5 ؎4.5
15
9
60
35
؎7.5
15
60
Units
kΩ
µV
µV/°C
µV
µV/V
µA
µA
V
dB
Ω
dB
mV
Ω
mV
V
mA
%/°C
mA
%/V
mV
µV/°C
mV
µV/V
dBV
dB/°C
dB
dB/V
mV
mA
mA
mA
kΩ
dB
dB
dB
dB
dB
dB
dB
dB
V
mA
mA
–2–
REV. D
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