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LF412 -
Low Offset, Low Drift Dual JFET Input Operational Amplifier
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Features
| • | Internally trimmed offset voltage: 1 mV (max) |
| • | Input offset voltage drift: 10 µV/°C (max) |
| • | Low input bias current: 50 pA |
| • | Low input noise current: |
| • | Wide gain bandwidth: 3 MHz (min) |
| • | High slew rate: 10V/µs (min) |
| • | Low supply current: 1.8 mA/Amplifier |
| • | High input impedance: 1012
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| • | Low total harmonic distortion <=0.02% |
| • | Low 1/f noise corner: 50 Hz |
| • | Fast settling time to 0.01%: 2 µs |
General Description
These devices are low cost, high speed, JFET input operational amplifiers with very low input offset voltage and guaranteed input offset voltage drift. More...
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Typical Application
click for larger image
| Parameters | Values |
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| Gain Bandwidth |
4 MHz |
| Channels |
2 Channels |
| Input OutputType |
Not Rail to Rail |
| Slew Rate |
15 Volts/usec |
| Supply Min |
10 Volt |
| Supply Max |
36, 45 Volt |
| Offset Voltage max, 25C |
1, 3 mV |
| Supply Current Per Channel |
1.8 mA |
| PowerWise Rating 2 |
450 uA/MHz |
| Max Input Bias Current |
50 nA |
| Output Current |
25 mA |
| Voltage Noise |
25 nV/root(Hz) |
| Shut down |
No |
| Special Features |
Undefined |
| Function |
Op Amp |
| Temperature Min |
0, -55 deg C |
| Temperature Max |
70, 125 deg C |
Typical Performance
click for larger image
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Also Recommended
| LM8272▲ | Wider Bandwidth,lower Power Consumption,RRIO, Unlimited Cap Drive,smaller Package |
Additional Resources
Design Tools
Application Notes
Connection Diagram
click for larger image
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Datasheet
RoHS Compliance Information
| Size in Kbytes | Date |
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| LF412 Low Offset, Low Drift Dual JFET Input Operational Amplifier |
565
Kbytes |
13-Sep-04 |
Download |
LF412 Low Offset, Low Drift Dual JFET Input Operational Amplifier (Japanese)
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404 Kbytes |
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| LF412 Mil-Aero (JAN) Datasheet MJLF412-X |
138 Kbytes |
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Download |
| LF412 Mil-Aero Datasheet MNLF412-X |
135 Kbytes |
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Download |
Package Availability, Models, Samples & Pricing
| Obsolete Part | Alternate Part or
Supplier | Source | Last Time Buy Date |
LF412A MDC
| NONE
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
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LF412A MWC
| NONE
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
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LF412CH
| LF412MH/883
| NATIONAL SEMICONDUCTOR
| 01 Dec 2009
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LF412MJ-SMD
| NONE
| NONE
| 06 Sep 2000
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General Description
These devices are low cost, high speed, JFET input operational amplifiers with very low input offset voltage and guaranteed input offset voltage drift. They require low supply current yet maintain a large gain bandwidth product and fast slew rate. In addition, well matched high voltage JFET input devices provide very low input bias and offset currents. The LF412 dual is pin compatible with the LM1558, allowing designers to immediately upgrade the overall performance of existing designs.
These amplifiers may be used in applications such as high speed integrators, fast D/A converters, sample and hold circuits and many other circuits requiring low input offset voltage and drift, low input bias current, high input impedance, high slew rate and wide bandwidth.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
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LF412ACN | BIFET | 0 | 12875 | 0 | 0 | 1065000 | 4 | 302196657
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LF412CN | BIFET | 0 | 12875 | 0 | 0 | 1065000 | 4 | 302196657
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Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR.
The Long Term Failure Rates were calculated
at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress
temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click here.
Design Tools
| Title | Size in Kbytes |
Date |
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| Amplifiers Selection Guide software for Windows |
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View |
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Application Notes
| Title | Size in Kbytes |
Date |
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| AN-299: Application Note 299 Audio Applications of Linear Integrated Circuits |
232
Kbytes |
24-Feb-99 |
Download |
| AN-311: Application Note 311 Theory and Applications of Logarithmic Amplifiers |
258
Kbytes |
2-Oct-02 |
Download |
| AN-301: Application Note 301 Signal Conditioning for Sophisticated Transducers |
579
Kbytes |
2-Oct-02 |
Download |
| AN-447: Protection Schemes for BI-FET Amplifiers and Switches |
76
Kbytes |
4-Nov-95 |
Download |
| AN-272: Application Note 272 Op Amp Booster Designs |
382
Kbytes |
2-Oct-02 |
Download |
More Application Notes
| Title | Size in Kbytes |
Date |
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| AN-294: Application Note 294 Special Sample and Hold Techniques |
233
Kbytes |
4-Oct-04 |
Download |
| AN-637: Realizing Trigonometric Functions with the Multifunction Converter LH0094 |
136
Kbytes |
5-Aug-95 |
Download |
[Information as of 8-Nov-2009]
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