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Product Detailed Parameters
- Description：IC OPAMP JFET 4 CIRCUIT 14DIP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Amplifier Type：J-FET
- Number of Circuits：4
- Output Type：-
- Slew Rate：13V/µs
- Gain Bandwidth Product：4 MHz
- Current - Input Bias：50 pA
- Voltage - Input Offset：5 mV
- Current - Supply：7.2mA (x4 Channels)
- Current - Output / Channel：-
- Voltage - Supply Span (Min)：36 V
- Voltage - Supply Span (Max)：36 V
- Operating Temperature：0°C ~ 70°C
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：14-DIP (0.300", 7.62mm)
- Supplier Device Package：14-PDIP
- -3db Bandwidth：-
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Overview
The LF347N/PB is a quad general-purpose operational amplifier manufactured by Texas Instruments. It features JFET inputs, providing low input bias current and high input impedance. The device offers a gain-bandwidth product of 3 MHz and a slew rate of 13 V/µs. It operates on supply voltages ranging from 7 V to 36 V (single) or ±3.5 V to ±18 V (dual). Key electrical parameters include an input offset voltage of 10 mV, input bias current of 200 pA, and common-mode rejection ratio of 100 dB. It is housed in a 14-pin PDIP package.
Feature Summary
- Quad JFET-input architecture for high input impedance
- High-speed performance with 13 V/µs slew rate
- Low input bias current characteristics
- Wide single or dual power supply operation
Applications
- High-speed integrators
- Digital-to-analog converters
- Sample-and-hold circuits
Procurement Notes
Verify the specific suffix against official documentation to confirm RoHS compliance and lead-free status. Ensure the package type matches the required PCB footprint. Confirm the operating temperature range aligns with system requirements. Cross-reference the manufacturer part number with authorized distributor listings to avoid counterfeit components.
Selection Notes
Select this component when high input impedance and moderate speed are required. The JFET input stage minimizes loading effects on high-impedance signal sources. Compare specifications against bipolar alternatives if lower noise or offset voltage is critical. Consider thermal dissipation limits within the PDIP package for high-power applications.
Part Context
This part belongs to the LF347 family of quad operational amplifiers. It serves as a legacy high-performance analog solution. The N suffix indicates a plastic DIP package. The /PB suffix typically denotes environmental compliance. It is distinct from CMOS or bipolar quad op-amps in its input stage technology.
Replacement Considerations
Check for LF347 variants with different packages or suffixes. Verify pin compatibility before substitution. Ensure equivalent electrical parameters for gain bandwidth and slew rate.
