LF347DIn StockTexas Instruments
Texas Instruments LF347D is a quad JFET-input operational amplifier with 3MHz bandwidth and low input bias current of 0.2nA. Features voltage-feedback architecture, 70dB CMRR, and wide supply voltage range. Available in 14-Pin SOIC package. From $0.138 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- LF347D Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1380(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad JFET-input op-amp with ultra-low input bias current of 0.2nA for high-impedance signal conditioning
- 3MHz gain-bandwidth product with voltage-feedback architecture for precision AC/DC applications
- Wide common-mode rejection ratio of 100dB typical (70dB min) for excellent noise immunity
- Operates across wide supply voltage range with frequency compensation for stability
- 14-Pin SOIC package enabling compact PCB layout in space-constrained designs
Applications
The LF347D is widely used in audio signal processing, active filter design, and instrumentation amplifier circuits where high input impedance and low bias current are critical. Its quad configuration makes it ideal for multi-channel sensor interfaces, data acquisition front-ends, and precision voltage followers. The device is also commonly deployed in medical instrumentation, industrial control systems, and test equipment requiring low-noise, high-accuracy analog signal conditioning.
Specifications
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.0002 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 | 10000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| 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) | 260 |
| 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 | JFET |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Unity Gain BW-Nom | 3000 |
| Voltage Gain-Min | 15000 |
| Wideband | NO |
| ## LF347D Alternates Showing results | Image |
| 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 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LF347D:
Frequently Asked Questions
What is the input bias current of the LF347D?
The LF347D features an extremely low maximum input bias current (IIB) of 0.2nA (0.0002µA) at 25°C, making it ideal for high-impedance signal sources such as photodetectors, pH electrodes, and capacitive sensors where even tiny bias currents can cause significant voltage errors.
What are the typical applications for the LF347D quad op-amp?
The LF347D is commonly used in active filter designs, audio preamplifiers, instrumentation amplifiers, sample-and-hold circuits, and multi-channel sensor signal conditioning. Its JFET inputs provide high input impedance suitable for transducer interfaces, while its 3MHz bandwidth supports a wide range of AC signal processing applications.
What package and supply voltage does the LF347D support?
The LF347D is available in a 14-Pin SOIC (Small Outline IC) package, enabling compact surface-mount designs. It supports a wide supply voltage range compatible with standard ±15V and ±5V analog supply rails, making it versatile for both industrial and portable applications.
What is the difference between LF347D and LF347N?
The LF347D and LF347N are functionally identical quad JFET op-amps with the same 3MHz bandwidth and 0.2nA bias current, but differ in package: the LF347D uses a 14-Pin SOIC surface-mount package suited for automated PCB assembly, while the LF347N uses a 14-Pin DIP through-hole package preferred for prototyping and socketed designs.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2951 | $0.30 |
| 1000+ | $0.2874 | $287.40 |
| 1250+ | $0.2700 | $337.50 |
| 1345+ | $0.1492 | $200.67 |
| 1745+ | $0.1436 | $250.58 |
| 2175+ | $0.1380 | $300.15 |
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