LF347N/NOPB National Semiconductor, LF347N/NOPB Datasheet - Page 8

• Manufacturer Part Number: LF347N/NOPB
• Description: IC OP AMP QUAD JFET WIDE 14-DIP
• Manufacturer: National Semiconductor
• Series: BI-FET II™r

Specifications of LF347N/NOPB

• Amplifier Type: J-FET
• Number Of Circuits: 4
• Slew Rate: 13 V/µs
• Gain Bandwidth Product: 4MHz
• Current - Input Bias: 50pA
• Voltage - Input Offset: 5000µV
• Current - Supply: 7.2mA
• Voltage - Supply, Single/dual (±): 8 V ~ 36 V, ±4 V ~ 18 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Bandwidth: 4 MHz
• Channel Separation: -120
• Common Mode Rejection Ratio: 100
• Current, Input Bias: 50 pA
• Current, Input Offset: 25 pA
• Current, Output: 31 mA
• Current, Supply: 7.2 mA
• Harmonic Distortion: 0.02 %
• Impedance, Thermal: 75 °C/W
• Number Of Amplifiers: Quad
• Package Type: MDIP-14
• Power Dissipation: 1000 mW
• Resistance, Input: 10^12 Ohms
• Temperature, Operating, Range: 0 to +70 °C
• Voltage, Gain: 100 V/mV
• Voltage, Input: 8 to 36 V
• Voltage, Noise: 20 nV/sqrt Hz
• Voltage, Offset: 5 mV
• Voltage, Output, High: 13.5 V
• Voltage, Output, Low: -13.5 V
• Voltage, Supply: ±15 V
• Number Of Channels: 4
• Voltage Gain Db: 100 dB
• Common Mode Rejection Ratio (min): 70 dB
• Input Voltage Range (max): 36 V
• Input Voltage Range (min): 8 V
• Input Offset Voltage: 10 mV at +/- 15 V
• Supply Current: 11 mA at +/- 15 V
• Maximum Power Dissipation: 1000 mW
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• Maximum Dual Supply Voltage: +/- 18 V
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Current - Output / Channel: -
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device
• Other names: *LF347N; *LF347N/NOPB; LF347; LF347NNS

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Pulse Response
Application Hints
The LF147 is an op amp with an internally trimmed input
offset voltage and JFET input devices (BI-FET II). These
JFETs have large reverse breakdown voltages from gate to
source and drain eliminating the need for clamps across the
inputs. Therefore, large differential input voltages can easily
be accommodated without a large increase in input current.
The maximum differential input voltage is independent of the
supply voltages. However, neither of the input voltages
Small Signal Non-Inverting
Small Signal Inverting
R
L
=2 kΩ, C
L
=10 pF
00564705
00564704
Current Limit (R
8
should be allowed to exceed the negative supply as this will
cause large currents to flow which can result in a destroyed
unit.
Exceeding the negative common-mode limit on either input
will force the output to a high state, potentially causing a
reversal of phase to the output. Exceeding the negative
common-mode limit on both inputs will force the amplifier
output to a high state. In neither case does a latch occur
since raising the input back within the common-mode range
again puts the input stage and thus the amplifier in a normal
operating mode.
L
=100Ω)
00564708
Large Signal Non-Inverting
Large Signal Inverting
00564706
00564707