AD712AQ Analog Devices Inc, AD712AQ Datasheet - Page 18
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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
AD712
9-POLE CHEBYCHEV FILTER
Figure 50 and Figure 51 show the AD712 and its dual counterpart,
the AD711, as a 9-pole Chebychev filter using active frequency
dependent negative resistors (FDNRs). With a cutoff frequency
of 50 kHz and better than 90 dB rejection, it can be used as an
antialiasing filter for a 12-bit data acquisition system with
100 kHz throughput.
As shown in Figure 50, the filter is comprised of four FDNRs
(A, B, C, D) having values of 4.9395 × 10
farad-seconds. Each FDNR active network provides a two-pole
response for eight poles. The ninth pole consists of a 0.001 μF
capacitor and a 124 kΩ resistor at Pin 3 of Amplifier A2. Figure 51
depicts the circuits for each FDNR with the proper selection of
R. To achieve optimal performance, the 0.001 μF capacitors
must be selected for 1% or better matching and all resistors
should have 1% or better tolerance.
R: 24.9kΩ FOR 4.9395E
29.4kΩ FOR 5.9276E
V
IN
AD712
Figure 51. FDNR for 9-Pole Chebychev Filter
1/2
–
+
+
AD711
–
–15
–15
A1
+15V
–15V
0.1µF
0.1µF
+
1.0kΩ
R
4.99kΩ
0.001µF
0.001µF
0.001µF
100kΩ
−15
4.9395E
+
–
AD712
and 5.9276 × 10
2800Ω
1/2
+15V
–15V
–15
A
*
0.1µF
0.1µF
+
5.9276E
*
6190Ω
SEE TEXT
Figure 50. 9-Pole Chebychev Filter
–15
B
*
–15
Rev. H | Page 18 of 20
+
5.9276E
6490Ω
–15
C
*
+
4.9395E
6190Ω
–15
Figure 52. High Frequency Response for 9-Pole Chebychev Filter
D
*
REF 5.0dBm
10dB/DIV
START.0Hz
RBW 300Hz
+
0.001µF
2800Ω
124kΩ
RANGE –5.0dBm
VBW 30Hz
+
–
AD711
A2
+15V
–15V
0.1µF
0.1µF
MARKER 96 800.0Hz
STOP 200 000.0Hz
ST 69.6 SEC
4.99kΩ
4.99kΩ
V
–90dBm
OUT