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Home > Semiconductors > ICs > NSC LF347N IC OPAMP J-FET QUAD 3 MHz 3.5V 14-DIP


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LF347N NSC - National Semiconductors Operational Amplifier, Quad, 4 Amplifier, 3 MHz, 13 V/µs, ± 3.5V to ± 18V, DIP, 14 Pins


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NSC LF347N IC Operational Amplifier, Quad, 4 Amplifier, 3 MHz, 13 V/µs, ± 3.5V to ± 18V, DIP, 14 Pins

The LF147 is a low cost, high speed quad JFET input operational amplifier with an internally trimmed input offset voltage (BI-FET II technology). The device requires a low supply current and yet maintains a large gain bandwidth product and a fast slew rate. In addition, well matched high voltage JFET input devices provide very low input bias and offset currents. The LF147 is pin compatible with the standard LM148. This feature allows designers to immediately upgrade the overall performance of existing LF148 and LM124 designs.

The LF147 may be used in applications such as high speed integrators, fast D/A converters, sample-and-hold circuits and many other circuits requiring low input offset voltage, low input bias current, high input impedance, high slew rate and wide bandwidth. The device has low noise and offset voltage drift.


  • Internally Trimmed Offset Voltage: 5 mV max
  • Low Input Bias Current: 50 pA
  • Low Input Noise Current: 0.01 pA/√Hz
  • Wide Gain Bandwidth: 4 MHz
  • High Slew Rate: 13 V/μs
  • Low Supply Current: 7.2 mA
  • High Input Impedance: 1012Ω
  • Low Total Harmonic Distortion: ≤0.02%
  • Low 1/f Noise Corner: 50 Hz
  • Fast Settling Time to 0.01%: 2 μs


Product Category: Operational Amplifiers - Op Amps
Manufacturer: NSC (Acquired by Texas Instruments)
Mounting Style: Through Hole
Package / Case: PDIP-14
Supply Voltage - Max: 36 V
Number of Channels: 4 Channel
GBP - Gain Bandwidth Product: 3 MHz
SR - Slew Rate: 13 V/us
CMRR - Common Mode Rejection Ratio: 70 dB
Ib - Input Bias Current: 200 pA
Vos - Input Offset Voltage: 10 mV
Supply Voltage - Min: 7 V
Operating Supply Current: 11 mA
Maximum Operating Temperature: + 70 C
Minimum Operating Temperature: 0 C
Shutdown: No Shutdown
Series: LF347
Packaging: Tube
Amplifier Type: High Speed Amplifier
Brand: Texas Instruments
Dual Supply Voltage: +/- 5 V, +/- 9 V, +/- 12 V, +/- 15 V
en - Input Voltage Noise Density: 18 nV/sqrt Hz
Height: 4.57 mm
In - Input Noise Current Density: 0.01 pA/sqrt Hz
Length: 19.3 mm
Maximum Dual Supply Voltage: +/- 18 V
Minimum Dual Supply Voltage: +/- 3.5 V
Operating Supply Voltage: 7 V to 36 V, +/- 3.5 V to +/- 18 V
Pd - Power Dissipation: 680 mW
Product: Operational Amplifiers
PSRR - Power Supply Rejection Ratio: 70 dB
Factory Pack Quantity: 25
Supply Type: Dual
Technology: BiFET
Vcm - Common Mode Voltage: Negative Rail + 4 V to Positive Rail - 4 V
Voltage Gain dB: 100 dB
Width: 6.35 mm
Unit Weight: 0.032734 oz

LF347, LF351, LF353, JFET Inputs, Low Input Bias & Offset Current Operational Amplifiers

The LF347, LF351 and LF353 are high-speed JFET input operational amplifiers that incorporate matched, high-voltage JFET and bipolar transistors. They feature high slew rates, low input bias and offset currents, and low offset voltage temperature coefficient.

Additional Information

Click here to Download Datasheet I
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