LF347M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The LF347M is a quad JFET-input operational amplifier delivering 4 MHz gain-bandwidth product with ultra-low 0.2 nA input bias current at 25°C. Its 70 dB minimum CMRR and wide supply range suit precision analog signal chains. Available from stock worldwide for prototyping and production builds.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- LF347M Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3200(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LF347M?
- Quad JFET-input architecture with 0.2 nA input bias current at 25°C, enabling accurate interfacing with megohm-range high-impedance sources
- 4 MHz gain-bandwidth product supporting active filter and wideband amplifier designs in a single 14-pin package housing 4 independent channels
- Wide supply voltage compatibility (±5 V to ±18 V) and 70 dB minimum CMRR for reliable operation across diverse analog front-end designs
- Pb-free (RoHS-compliant) construction meeting modern environmental regulations without design changes
What is LF347M used for?
The LF347M suits multi-channel precision instrumentation where four independent JFET-input amplifiers are needed in a compact form factor, such as electrocardiogram front-ends, multi-axis sensor signal conditioning, and 4-channel active crossover networks. Its low bias current makes it equally effective in integrator circuits, logarithmic amplifiers, and sample-and-hold stages feeding 12-bit ADCs. Industrial data-acquisition systems and audio mixing consoles benefit from its low noise and wide bandwidth across four simultaneous signal paths.
What are the specifications of LF347M?
| Pbfree Code | Yes |
| Date Of Intro | 1989-01-01 |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.008 µA |
| Bias Current-Max (IIB) @25C | 0.0002 µA |
| Common-mode Reject Ratio-Min | 70dB |
| Common-mode Reject Ratio-Nom | 100dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 0.004 µA |
| Input Offset Voltage-Max | 5000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e0 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -18 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 4 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 235 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 8V/us |
| Slew Rate-Nom | 13V/us |
| Subcategory | Operational Amplifier |
| Supply Current-Max | 11mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 4000 |
| Voltage Gain-Min | 15000 |
| Wideband | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the LF347M datasheet?
LF347M Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LF347M?
Compatible alternatives and drop-in replacements for LF347M:
Frequently Asked Questions
How does the LF347M's 4 MHz gain-bandwidth product constrain usable closed-loop bandwidth in a gain-of-10 amplifier stage?
With a 4 MHz gain-bandwidth product, the LF347M delivers a closed-loop -3 dB bandwidth of approximately 400 kHz at a non-inverting gain of 10. Designers targeting 200 kHz signal bandwidth should set gain to 20 or lower. This makes the LF347M practical for audio, ultrasound preprocessing, and data-acquisition buffer stages operating below 1 MHz, while all 4 channels share the same 4 MHz GBW figure.
When would a designer choose the LF347M over a dual LF353 in a 4-channel signal conditioning board?
The LF347M integrates 4 amplifiers in a single 14-pin package, replacing two LF353 dual devices and saving one IC footprint, roughly 8 mm × 8 mm of board area, plus associated bypass capacitors. This consolidation reduces BOM line count by 1 and simplifies routing on space-constrained PCBs. Both share similar 4 MHz GBW and JFET-input characteristics, so electrical performance is equivalent, making the LF347M preferable whenever board density is the primary constraint.
What input offset voltage does the LF347M specify and how does it affect 12-bit ADC accuracy?
The LF347M specifies a maximum input offset voltage of 5000 µV (5 mV) at 25°C. For a 12-bit ADC with a 5 V full-scale range, 1 LSB equals approximately 1.22 mV, so a 5 mV offset represents about 4 LSB of DC error. Designers targeting sub-2 LSB accuracy should add offset trim circuitry or select the LF347A grade with tighter offset specifications, or use offset null pins if available.
Is the LF347M RoHS compliant and what is its recommended storage temperature range?
Yes, the LF347M carries a Pb-free code confirming RoHS compliance, making it suitable for lead-free solder reflow processes. Storage temperature is typically rated from –65°C to +150°C, allowing extended shelf life in standard tape-and-reel inventory. The operating junction temperature maximum is +150°C, and the commercial operating ambient range spans 0°C to +70°C for the standard M-suffix Small Outline package.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.4000 | $2.40 |
| 3+ | $1.8000 | $5.40 |
| 15+ | $1.5000 | $22.50 |
| 51+ | $1.3200 | $67.32 |
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