AD712JRZ Analog Devices Inc, AD712JRZ Datasheet - Page 16

• Manufacturer Part Number: AD712JRZ
• Description: IC OPAMP BIFET DUAL PREC 8SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD712JRZ

• Slew Rate: 20 V/µs
• 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: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Op Amp Type: High Speed
• No. Of Amplifiers: 2
• Bandwidth: 4MHz
• Supply Voltage Range: ± 4.5V To ± 18V
• Amplifier Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: 0°C To +70°C
• Rail/rail I/o Type: No
• Number Of Elements: 2
• Unity Gain Bandwidth Product: 3MHz
• Common Mode Rejection Ratio: 70dB
• Input Offset Voltage: 3@±15VmV
• Input Bias Current: 100pA
• Single Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (typ): ±15V
• Voltage Gain In Db: 112.04dB
• Power Supply Requirement: Dual
• Shut Down Feature: No
• Single Supply Voltage (min): Not RequiredV
• Single Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): ±4.5V
• Dual Supply Voltage (max): ±18V
• Technology: BiFET
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC N
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Gain Bandwidth Product: -
• Lead Free Status / Rohs Status: Compliant

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