component
LF347DT
Public Made by Adomby adom
STMicroelectronics FET InputAmplifiers, SOIC-14. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownLF347DT
STMicroelectronics · FET InputAmplifiers · SOIC-14
LF347DT from STMicroelectronics, in a SOIC-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT1 | output | Output of op-amp 1. |
| 2 | IN1- | input | Inverting input of op-amp 1. High-impedance JFET input. |
| 3 | IN1+ | input | Non-inverting input of op-amp 1. High-impedance JFET input. |
| 4 | VCC+ | power_in | Positive supply voltage. Absolute maximum +/-18 V (LF347: split supplies typ. +/-15 V). Shared by all four amplifiers. |
| 5 | IN2+ | input | Non-inverting input of op-amp 2. High-impedance JFET input. |
| 6 | IN2- | input | Inverting input of op-amp 2. High-impedance JFET input. |
| 7 | OUT2 | output | Output of op-amp 2. |
| 8 | OUT3 | output | Output of op-amp 3. |
| 9 | IN3- | input | Inverting input of op-amp 3. High-impedance JFET input. |
| 10 | IN3+ | input | Non-inverting input of op-amp 3. High-impedance JFET input. |
| 11 | VCC- | power_in | Negative supply voltage. Absolute maximum +/-18 V (LF347: split supplies typ. +/-15 V). Shared by all four amplifiers. |
| 12 | IN4+ | input | Non-inverting input of op-amp 4. High-impedance JFET input. |
| 13 | IN4- | input | Inverting input of op-amp 4. High-impedance JFET input. |
| 14 | OUT4 | output | Output of op-amp 4. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOIC-14 |
| Category | Op-amp/Cmp |
| Pins | 14 |
Ordering variants
Same part, different packaging or reel option.
LF347DTDLF347DTLF347DTN
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -18 | 18 | V | 2 | ||
| Input voltage | Vi | -15 | 15 | V | Must not exceed supply voltage or 15 V, whichever is less | 2 | |
| Differential input voltage | Vid | -30 | 30 | V | Non-inverting input with respect to inverting input | 2 | |
| Power dissipation | Ptot | 680 | mW | 2 | |||
| Operating free-air temperature range (LF347) | Toper | 0 | 70 | °C | LF347 | 2 | |
| Storage temperature range | Tstg | -65 | 150 | °C | 2 | ||
| Input offset voltage | Vio | 3 | 10 | mV | Rs = 10kΩ, Tamb = 25°C | 3 | |
| Input offset voltage | Vio | 13 | mV | Rs = 10kΩ, Tmin ≤ Tamb ≤ Tmax | 3 | ||
| Input offset current | Iio | 5 | 100 | pA | Tamb = 25°C | 3 | |
| Input offset current | Iio | 4 | nA | Tmin ≤ Tamb ≤ Tmax | 3 | ||
| Input bias current | Iib | 20 | 200 | pA | Tamb = 25°C | 3 | |
| Input bias current | Iib | 20 | nA | Tmin ≤ Tamb ≤ Tmax | 3 | ||
| Large signal voltage gain | Avd | 50 | 200 | V/mV | RL = 2kΩ, Vo = ±10V, Tamb = 25°C | 3 | |
| Large signal voltage gain | Avd | 25 | V/mV | RL = 2kΩ, Vo = ±10V, Tmin ≤ Tamb ≤ Tmax | 3 | ||
| Supply voltage rejection ratio | SVR | 80 | 86 | dB | RS = 10kΩ, Tamb = 25°C | 3 | |
| Supply voltage rejection ratio | SVR | 80 | dB | RS = 10kΩ, Tmin ≤ Tamb ≤ Tmax | 3 | ||
| Supply current, per amp, no load | ICC | 1.4 | 2.7 | mA | Tamb = 25°C | 3 | |
| Supply current, per amp, no load | ICC | 2.7 | mA | Tmin ≤ Tamb ≤ Tmax | 3 | ||
| Input common mode voltage range | Vicm | -12 | 15 | V | 3 | ||
| Common mode rejection ratio | CMR | 70 | 86 | dB | RS = 10kΩ, Tamb = 25°C | 3 | |
| Common mode rejection ratio | CMR | 70 | dB | RS = 10kΩ, Tmin ≤ Tamb ≤ Tmax | 3 | ||
| Output short-circuit current | IOS | 10 | 40 | 60 | mA | Tamb = 25°C | 3 |
| Output short-circuit current | IOS | 10 | 60 | mA | Tmin ≤ Tamb ≤ Tmax | 3 | |
| Output voltage swing (±Vopp) | ±Vopp | 10 | 12 | V | Tamb = 25°C, RL = 2kΩ | 3 | |
| Output voltage swing (±Vopp) | ±Vopp | 12 | 13.5 | V | Tamb = 25°C, RL = 10kΩ | 3 | |
| Output voltage swing (±Vopp) | ±Vopp | 10 | V | Tmin ≤ Tamb ≤ Tmax, RL = 2kΩ | 3 | ||
| Output voltage swing (±Vopp) | ±Vopp | 12 | V | Tmin ≤ Tamb ≤ Tmax, RL = 10kΩ | 3 | ||
| Slew rate | SR | 12 | 16 | V/µs | Vi = 10V, RL = 2kΩ, CL = 100pF, Tamb = 25°C, unity gain | 3 | |
| Gain bandwidth product | GBP | 2.5 | 4 | MHz | f = 100kHz, Tamb = 25°C, Vin = 10mV, RL = 2kΩ, CL = 100pF | 3 |
CAD (KiCad official)
- Symbol:
LF347DT - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
lf347dt-etched.step/lf347dt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lf347dt.step/lf347dt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (10 pp, sha256
556fb7d5f3029d7c, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).