AD712AQ Analog Devices Inc, AD712AQ Datasheet - Page 16
AD712AQ
Manufacturer Part Number
AD712AQ
Description
IC OPAMP BIFET DUAL PREC 8CDIP
Manufacturer
Analog Devices Inc
Specifications of AD712AQ
Slew Rate
20 V/µs
Rohs Status
RoHS non-compliant
Amplifier Type
J-FET
Number Of Circuits
2
-3db Bandwidth
4MHz
Current - Input Bias
25pA
Voltage - Input Offset
300µV
Current - Supply
5mA
Current - Output / Channel
25mA
Voltage - Supply, Single/dual (±)
9 V ~ 36 V, ±4.5 V ~ 20 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-CDIP (0.300", 7.62mm)
Op Amp Type
Precision
No. Of Amplifiers
2
Bandwidth
4MHz
Supply Voltage Range
± 4.5V To ± 18V
Amplifier Case Style
DIP
No. Of Pins
8
Operating Temperature Range
-40°C To +85°C
Common Mode Rejection Ratio
88
Current, Input Bias
25 pA
Current, Input Offset
10 pA
Current, Offset, Input
10 pA (Typ.)
Current, Output
±25 mA
Current, Supply
5 mA (Typ.)
Harmonic Distortion
0.0003 %
Impedance, Thermal
22 °C/W
Number Of Amplifiers
Dual
Package Type
CDIP-8
Resistance, Input
3×10^12 Ohms
Temperature, Operating, Maximum
85 °C
Temperature, Operating, Minimum
-40 °C
Temperature, Operating, Range
-40 to +85 °C
Voltage, Input
±20 V (Differential), -11.5 to +14.5 V (Common-Mode)
Voltage, Noise
45 nV/sqrt Hz
Voltage, Offset
0.3 mV
Voltage, Offset, Input
0.3 mV (Typ.)
Voltage, Output, High
+13.9 V
Voltage, Output, Low
-13.3 V
Voltage, Supply
±15 V
Output Type
-
Gain Bandwidth Product
-
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
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Manufacturer:
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Quantity:
15 600
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AD712
DRIVING A LARGE CAPACITIVE LOAD
The circuit in Figure 46 uses a 100 Ω isolation resistor that enables
the amplifier to drive capacitive loads exceeding 1500 pF; the
resistor effectively isolates the high frequency feedback from
the load and stabilizes the circuit. Low frequency feedback is
returned to the amplifier summing junction via the low-pass filter
formed by the 100 Ω series resistor and the Load Capacitance C
Figure 47 shows a typical transient response for this connection.
TYPICAL CAPACITANCE
LIMIT FOR VARIOUS
LOAD RESISTORS
2kΩ
10kΩ
20Ω
R
1
INPUT
C
1500pF
1500pF
1000pF
1
4.99kΩ
Figure 46. Circuit for Driving a Large Capacitive Load
UP TO
30pF
+
–
AD712
+V
1/2
–V
4.99kΩ
IN
IN
0.1µF
+
–
0.1µF
–
+
100Ω
C1
R1
OUTPUT
Rev. H | Page 16 of 20
L
.
100
90
0%
10
Figure 47. Transient Response R
5V
L
= 2 kΩ, C
1µs
L
= 500 pF