AD711KNZ Analog Devices Inc, AD711KNZ Datasheet - Page 12

• Manufacturer Part Number: AD711KNZ
• Description: IC OPAMP BIFET PREC 25MA 8DIP
• Manufacturer: Analog Devices Inc

Specifications of AD711KNZ

• Slew Rate: 20 V/µs
• Amplifier Type: J-FET
• Number Of Circuits: 1
• -3db Bandwidth: 4MHz
• Current - Input Bias: 15pA
• Voltage - Input Offset: 200µV
• Current - Supply: 2.5mA
• Current - Output / Channel: 25mA
• Voltage - Supply, Single/dual (±): 9 V ~ 36 V, ±4.5 V ~ 18 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Op Amp Type: General Purpose
• No. Of Amplifiers: 1
• Bandwidth: 4MHz
• Supply Voltage Range: ± 4.5V To ± 18V
• Amplifier Case Style: DIP
• No. Of Pins: 8
• Common Mode Rejection Ratio: 88
• Current, Input Bias: 15 pA
• Current, Input Offset: 5 pA
• Current, Output: 25 mA
• Harmonic Distortion: 0.0003 %
• Impedance, Thermal: 33 °C/W
• Package Type: PDIP-8
• Power Dissipation: 500 mW
• Resistance, Input: 3×10^12 Ohms
• Temperature, Operating, Range: 0 to +70 °C
• Voltage, Input: ±20 V (Differential), -11.5 to +14.5 V (Common-Mode)
• Voltage, Noise: 45 nV/sqrt Hz
• Voltage, Offset: 0.2 mV
• Voltage, Output, High: +13.9 V
• Voltage, Output, Low: -13.3 V
• Voltage, Supply: ±15 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Gain Bandwidth Product: -
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

9-POLE CHEBYCHEV FILTER
Figure 17 shows the AD711 and its dual counterpart, the AD712,
as a 9-pole Chebychev filter using active frequency dependent
negative resistors (FDNR). With a cutoff frequency of 50 kHz
and better than 90 dB rejection, it may be used as an anti-aliasing
filter for a 12-bit data acquisition system with 100 kHz throughput.
As shown in Figure 17, the filter is comprised of four FDNRs (A,
B, C, D) having values of 4.9395
10
AD711
–15
farad-seconds. Each FDNR active network provides a
Figure 18. FDNR for 9-Pole Chebychev Filter
R: 24.9k
29.4k
V
IN
FOR 4.9395E
FOR 5.9276E
AD712
1/2
* SEE TEXT
AD711
+15V
–15V
0.001 F
A1
0.1 F
–15
–15
0.1 F
1k
4.99k
R
0.001 F
0.001 F
100k
10
–15
AD712
4.9395E
and 5.9276
+15V
–15V
1/2
2800
0.1 F
0.1 F
*
–15
A
Figure 17. 9-Pole Chebychev Filter
5.9276E
6190
–15
B
*
5.9276E
6490
–12–
–15
C
*
2-pole response; for a total of 8 poles. The 9th pole consists of a
0.001 mF capacitor and a 124 kW resistor at Pin 3 of amplifier A2.
Figure 18 depicts the circuits for each FDNR with the proper
selection of R. To achieve optimal performance, the 0.001 mF
capacitors must be selected for 1% or better matching and all
resistors should have 1% or better tolerance.
4.9395E
6190
Figure 19. High Frequency Response for 9-Pole
Chebychev Filter
–15
D
*
2800
0.001
F
124k
AD711
+15V
–15V
A2
0.1 F
0.1 F
4.99k
4.99k
V
OUT
REV. E