LF353N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The LF353N is a dual JFET-input operational amplifier in an 8-pin DIP package, delivering 4 MHz gain-bandwidth product and ultra-low 0.2 nA input bias current for high-impedance signal paths. Its 70 dB minimum CMRR and wide ±18 V supply range make it ideal for precision analog designs. Available from stock worldwide for immediate shipment.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LF353N Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2284(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 LF353N?
- Dual JFET-input op-amp with 0.2 nA input bias current at 25°C, preventing loading on capacitive, piezoelectric, and photodiode sensor sources
- 4 MHz gain-bandwidth product supporting active filter stages up to 2 MHz closed-loop bandwidth and wideband instrumentation amplifier designs
- 70 dB minimum CMRR (100 dB typical) providing excellent differential signal rejection for precision measurement and audio applications
- Standard 8-pin DIP (N) through-hole package for direct breadboard prototyping, ideal for rapid development and repair of legacy instrumentation
What is LF353N used for?
The LF353N is a classic choice for dual-channel audio preamplifiers, active tone-control circuits, and phono equalizer stages in analog audio equipment, where its JFET inputs deliver low noise across the 20 Hz to 20 kHz band at ±15 V. Its 4 MHz bandwidth and dual-channel layout also make it effective in two-pole active Butterworth or Chebyshev filter implementations for data-acquisition front-ends feeding 12-bit ADCs. Engineers maintaining legacy industrial instrumentation, oscilloscopes, and measurement systems frequently use the LF353N as a direct through-hole replacement for original JFET op-amp channels.
What are the specifications of LF353N?
| Pbfree Code | No |
| 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 | 13000 µV |
| JESD-30 Code | R-PDIP-T8 |
| 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 | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 8V/us |
| Slew Rate-Nom | 13V/us |
| Supply Current-Max | 6.5mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | NO |
| Technology | BIFET |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | TIN LEAD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 4000 |
| Voltage Gain-Min | 15000 |
| Wideband | NO |
| Package | Dual-In-Line 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 LF353N datasheet?
LF353N Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LF353N?
Compatible alternatives and drop-in replacements for LF353N:
Frequently Asked Questions
How does the LF353N's 4 MHz gain-bandwidth product limit usable signal frequency in a dual-supply active bandpass filter design?
With a 4 MHz gain-bandwidth product, the LF353N supports closed-loop -3 dB bandwidths of approximately 400 kHz at gain 10 and 40 kHz at gain 100. For a multiple-feedback bandpass filter centered at 10 kHz with Q of 10 and gain of 10, the required GBW is at least 10 kHz × 10 × 10 = 1 MHz, well within the LF353N's 4 MHz rating. At higher center frequencies above 500 kHz, designers should verify loop gain is sufficient to maintain filter accuracy.
For retrofitting an early-1990s analog synthesizer VCO circuit, is the LF353N a direct pin-compatible replacement for an LF353 from other manufacturers?
Yes, the LF353N from Texas Instruments is electrically and pin-compatible with LF353 devices from National Semiconductor (now TI), ST, and other vendors — all share the same 8-pin DIP pinout with inverting inputs on pins 2 and 6, non-inverting inputs on pins 3 and 5, outputs on pins 1 and 7, and ±V supply on pins 4 and 8. Electrical specifications including 4 MHz GBW, 0.2 nA bias current, and ±15 V supply are equivalent, making it a drop-in replacement in vintage synthesizer and signal generator repair.
How does the LF353N's input offset voltage affect accuracy in a 3-decade logarithmic amplifier spanning 1 µA to 1 mA?
The LF353N specifies a maximum input offset voltage of 5000 µV (5 mV) at 25°C. In a transdiode log amplifier, offset voltage directly adds a fixed output error of approximately 0.1 log decades (for a 100 mV/decade scale), corresponding to a 26% current reading error at the lowest signal levels near 1 µA. Adding an offset null potentiometer reduces this to under 1 mV residual, cutting log error to below 2.6%, which is acceptable for 2-digit precision logging applications.
What slew rate does the LF353N achieve and how does it compare to the LF353B enhanced variant for driving capacitive loads at 100 kHz?
The LF353N achieves a typical slew rate of 13 V/µs on ±15 V supplies, enabling full-scale 30 V output swings at frequencies up to approximately 138 kHz before slew-rate limiting occurs (SR / (2π × Vpeak) = 13 V/µs / (2π × 15 V) ≈ 138 kHz). Driving a 100 pF capacitive load at 100 kHz with a 10 V amplitude requires at least 6.3 V/µs, so the LF353N handles this comfortably. Adding a 100 Ω series output resistor prevents the capacitive load from degrading phase margin below 45 degrees.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.3825 | $0.38 |
| 14+ | $0.3188 | $4.46 |
| 2500+ | $0.2610 | $652.50 |
| 4000+ | $0.2284 | $913.68 |
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