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AD640BD Arkusz danych(PDF) 2 Page - Analog Devices

Numer części AD640BD
Szczegółowy opis  DC-Coupled Demodulating 120 MHz Logarithmic Amplifier
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Strona internetowa  http://www.analog.com
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AD640BD Arkusz danych(HTML) 2 Page - Analog Devices

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AD640–SPECIFICATIONS
DC SPECIFICATIONS
Model
AD640J
AD640B
AD640T
Parameter
Conditions
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Units
TRANSFER FUNCTION
1
IOUT = IY LOG |VIN/VX| for VIN =
± 0.75 mV to ± 200 mV dc
SIGNAL INPUTS (Pins 1, 20)
Input Resistance
Differential
500
500
500
k
Input Offset Voltage
Differential
50
500
50
200
50
200
µV
vs. Temperature
0.8
0.8
0.8
µV/°C
Over Temperature
TMIN to TMAX
300
µV
vs. Supply
2
2
2
µV/V
Input Bias Current
7
25
7
25
7
25
µA
Input Bias Offset
1
1
1
µA
Common-Mode Range
–2
+0.3
–2
+0.3
–2
+0.3
V
INPUT ATTENUATOR
(Pins 2, 3, 4, 5 and 19)
Attenuation
2
Pin 5 to Pin 19
20
20
20
dB
Input Resistance
Pins 5 to 3/4
300
300
300
SIGNAL OUTPUT (Pins 10, 11)
Small Signal Gain
3
50
50
50
dB
Peak Differential Output
4
±180
± 180
± 180
mV
Output Resistance
Either Pin to COM
75
75
75
Quiescent Output Voltage
Either Pin to COM
–90
–90
–90
mV
LOGARITHMIC OUTPUT
5 (Pin 14)
Voltage Compliance Range
–0.3
+VS –1
–0.3
+VS –1
–0.3
VS –1
V
Slope Current, IY
0.95
1.00
1.05
0.98
1.00
1.02
0.98
1.00
1.02
mA
Accuracy vs. Temperature
0.002
0.002
0.002
%/
°C
TMIN to TMAX
0.98
1.02
mA
Accuracy vs. Supply
+VS = 4.5 V to 7.5 V
0.08
1.0
0.08
0.4
0.08
0.4
%/V
Intercept Voltage
6, V
X
0.85
1.00
1.15
0.95
1.00
1.05
0.95
1.00
1.05
mV
vs. Temperature
0.5
0.5
0.5
µV/°C
Over Temperature
TMIN to TMAX
0.90
1.10
mV
vs. Supply
±V
S = 4.5 V to 7.5 V
2
2
2
µV/V
Logarithmic Offset
(Alt. Definition of VX)
–61.5
–60.0
–58.7
–60.5
–60.0
–59.5
–60.5
–60.0
–59.5
dBV
vs. Temperature
0.004
0.004
0.004
dB/
°C
Over Temperature
TMIN to TMAX
–60.9
–59.1
dB
vs. Supply
±V
S = 4.5 V to 7.5 V
0.017
0.017
0.017
dB/V
Intercept Voltage Using Attenuator
8.25
10.0
11.75
9.0
10.0
11.0
9.0
10.0
11.0
mV
Zero Signal Output Current
7
–0.2
–0.2
–0.2
mA
ITC Disabled
Pin 8 to COM
–0.27
–0.27
–0.27
mA
Maximum Output Current
2.3
2.3
2.3
mA
APPLICATIONS RESISTORS
(Pins 15, 16, 17)
1.000
0.995
1.000
1.005
0.995
1.000
1.005
k
DC LINEARITY
VIN ±1 mV to ± 100 mV
0.35
1.2
0.35
0.6
0.35
0.6
dB
TOTAL ABSOLUTE DC
ACCURACY
VIN =
± 1 mV to ±100 mV8
0.55
2
0.55
0.9
0.55
0.9
dB
Over Temperature
TMIN to TMAX
3
1.7
1.8
dB
Over Supply Range
±V
S = 4.5 V to 7.5 V
2
1.0
1.0
dB
VIN =
± 0.75 mV to ±200 mV
1.0
3
1.0
2.0
1.0
2.0
dB
Using Attenuator
VIN =
± 10 mV to ± 1 V
0.4
2.5
0.4
1.5
0.4
1.5
dB
Over Temperature
TMIN to TMAX
0.6
3
0.6
2.0
0.6
2.0
dB
VIN =
± 7.5 mV to 2 V
1.2
3.5
1.2
2.5
1.2
2.5
dB
POWER REQUIREMENTS
Voltage Supply Range
4.5
7.5
4.5
7.5
4.5
7.5
V
Quiescent Current
9
+VS (Pin 12)
TMIN to TMAX
915
9
15
9
15
mA
–VS (Pin 7)
TMIN to TMAX
35
60
35
60
35
60
mA
–2–
REV. C
(VS =
5 V, TA = +25 C, unless otherwise noted)


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