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LF347MX
Public Made by Adomby adom
Texas Instruments FET Input Amplifiers, SOIC-14. Pinout reviewed by a person against 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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README
markdownLF347MX
Texas Instruments · FET Input Amplifiers · SOIC-14
LF347MX from Texas Instruments, in a SOIC-14. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT_A | output | Output of amplifier A; swings to ±13.5 V typ into 10 kΩ with VS=±15 V. |
| 2 | IN-_A | input | Inverting input of amplifier A; input bias current 50 pA typ, input resistance 10¹² Ω. |
| 3 | IN+_A | input | Non-inverting input of amplifier A; common-mode range ±11 V (VS=±15 V). |
| 4 | V+ | power_in | Positive supply voltage; ±18 V max (LF347), total supply current 7.2 mA typ. |
| 5 | IN+_B | input | Non-inverting input of amplifier B; common-mode range ±11 V (VS=±15 V). |
| 6 | IN-_B | input | Inverting input of amplifier B; input bias current 50 pA typ, input resistance 10¹² Ω. |
| 7 | OUT_B | output | Output of amplifier B; swings to ±13.5 V typ into 10 kΩ with VS=±15 V. |
| 8 | OUT_C | output | Output of amplifier C; swings to ±13.5 V typ into 10 kΩ with VS=±15 V. |
| 9 | IN-_C | input | Inverting input of amplifier C; input bias current 50 pA typ, input resistance 10¹² Ω. |
| 10 | IN+_C | input | Non-inverting input of amplifier C; common-mode range ±11 V (VS=±15 V). |
| 11 | V- | power_in | Negative supply voltage; ±18 V max (LF347); neither input voltage should exceed this rail. |
| 12 | IN+_D | input | Non-inverting input of amplifier D; common-mode range ±11 V (VS=±15 V). |
| 13 | IN-_D | input | Inverting input of amplifier D; input bias current 50 pA typ, input resistance 10¹² Ω. |
| 14 | OUT_D | output | Output of amplifier D; swings to ±13.5 V typ into 10 kΩ with VS=±15 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Offset Voltage (RS=10 kΩ, TA=25°C) | VOS | 5 | 10 | mV | RS=10 kΩ, TA=25°C | 2 | |
| Input Offset Voltage over temperature | VOS | 13 | mV | Over Temperature | 2 | ||
| Input Offset Current | IOS | 25 | 100 | pA | Tj=25°C, (2) (3) | 2 | |
| Input Offset Current over temperature | IOS | 4 | nA | Over Temperature | 2 | ||
| Input Bias Current | IB | 50 | 200 | pA | Tj=25°C, (2) (3) | 2 | |
| Input Bias Current over temperature | IB | 8 | nA | Over Temperature | 2 | ||
| Large Signal Voltage Gain | AVOL | 25 | 100 | V/mV | VS=±15V, TA=25°C, VO=±10V, RL=2 kΩ | 3 | |
| Large Signal Voltage Gain over temperature | AVOL | 15 | V/mV | Over Temperature | 3 | ||
| Input Common-Mode Voltage Range (positive limit) | VCM | 11 | 15 | V | VS=±15V | 3 | |
| Common-Mode Rejection Ratio | CMRR | 70 | 100 | dB | RS≤10 kΩ | 3 | |
| Supply Voltage Rejection Ratio | PSRR | 70 | 100 | dB | See (4) | 3 | |
| Supply Current | IS | 7.2 | 11 | mA | 3 | ||
| Slew Rate | SR | 8 | 13 | V/μs | VS=±15V, TA=25°C | 3 | |
| Gain-Bandwidth Product | GBW | 2.2 | 4 | MHz | VS=±15V, TA=25°C | 3 | |
| Supply Voltage (absolute maximum) | VS | -18 | 18 | V | LF347B/LF347 column | 2 | |
| Differential Input Voltage (absolute maximum) | VID | -30 | 30 | V | LF347B/LF347 column | 2 | |
| Input Voltage Range (absolute maximum) | VIN | -15 | 15 | V | LF347B/LF347 column | 2 | |
| Power Dissipation (absolute maximum) | PD | 1000 | mW | LF347B/LF347 column | 2 | ||
| Maximum Junction Temperature | Tj max | 150 | °C | 2 | |||
| Storage Temperature Range | TSTG | -65 | 150 | °C | −65°C≤TA≤150°C | 2 | |
| Lead Temperature (soldering, 10 sec) | 260 | °C | 10 sec. | 2 | |||
| SOIC Vapor Phase soldering | 215 | °C | Vapor Phase (60 seconds) | 2 | |||
| SOIC Infrared soldering | 220 | °C | Infrared (15 seconds) | 2 | |||
| ESD Tolerance | 900 | V | Human body model, 1.5 kΩ in series with 100 pF | 2 | |||
| Thermal resistance junction to ambient, SOIC Narrow (D) | θjA | 100 | °C/W | SOIC Narrow (D) | 2 | ||
| Operating Temperature Range (commercial) | TA | 0 | 70 | °C | LF347B and LF347 commercial range (footnote 7) | 2 |
CAD (KiCad official)
- Symbol:
LF347MX - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
lf347mx-etched.step/lf347mx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lf347mx.step/lf347mx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (26 pp, sha256
33686f838126616b, retrieved 2026-10-20, 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).