AD712AQ Analog Devices Inc, AD712AQ Datasheet - Page 13
![IC OPAMP BIFET DUAL PREC 8CDIP](/photos/6/64/66420/505-8-cdip_sml.jpg)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AD712AQ
Manufacturer:
SKYWORKS
Quantity:
15 600
Part Number:
AD712AQ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
AD712AQ/CQ
Manufacturer:
AD
Quantity:
5 510
Company:
Part Number:
AD712AQ/CQ
Manufacturer:
AGILENT
Quantity:
5 510
The photos of Figure 35 and Figure 36 show the dynamic
response of the AD712 in the settling test circuit of Figure 37.
100
0%
90
10
Figure 35. Settling Characteristics 0 V to +10 V Step
Upper Trace: Output of AD712 Under Test (5 V/Div)
Lower Trace: Amplified Error Voltage (0.01%/Div)
5V
5mV
(OR EQUIVALENT
FLAT TOP PULSE
GENERATION)
DYNAMICS
DATA
5109
V
IN
10kΩ
4.99kΩ
500ns
0.1µF
–
+
AD712
200Ω
–15V
1/2
10kΩ
+15V
5 TO 18pF
Figure 37. Settling Time Test Circuit
4.99kΩ
0.1µF
HP2835
5kΩ
Rev. H | Page 13 of 20
1.1kΩ
0.47µF
10pF
–15V +15V
+
–
V
OUT
1/2
The input of the settling time fixture is driven by a flat top pulse
generator. The error signal output from the false summing node
of A1 is clamped, amplified by A2, and then clamped again. The
error signal is thus clamped twice: once to prevent overloading
Amplifier A2 and then a second time to avoid overloading the
oscilloscope preamp. The Tektronix oscilloscope preamp type
7A26 was carefully chosen because it does not overload with
these input levels. Amplifier A2 needs to be a very high speed
FET-input op amp; it provides a gain of 10, amplifying the error
signal output of A1.
0.2 TO 0.6pF
10kΩ
0.47µF
5pF
100
0%
90
10
Figure 36. Settling Characteristics 0 V to −10 V Step
Upper Trace: Output of AD712 Under Test (5 V/Div)
Lower Trace: Amplified Error Voltage (0.01%/Div)
205Ω
5V
5mV
V
ERROR ×
HP2835
5
TEKTRONIX 7A26
OSCILLOSCOPE
PREAMP
INPUT SECTION
1MΩ
20pF
500ns
AD712