(Hong Kong)
Product Summary
The LF442 dual low power operational amplifiers provide many of the same AC characteristics as the industry standard LM1458 while greatly improving the DC characteristics of the LM1458. The amplifiers have the same bandwidth,slew rate, and gain (10 kΩ load) as the LM1458 and only draw one tenth the supply current of it. In addition the well matched high voltage JFET input devices of the LF442 reduce the input bias and offset currents by a factor of 10,000 over the 1458. A combination of careful layout design and internal trimming guarantees very low input offset voltage and voltage drift. The LF442 also has a very lowequivalent input noise voltage for a low power amplifier.
The LF442 is pin compatible with the LM1458 allowing an immediate 10 times reduction in power drain in many appli-cations.
Parametrics
The absolute maximum ratings of LF442 are (1)Supply Voltage:±18V; (2)Differential Input Voltage:±30V; (3)Input Voltage Range(Note 2):±15V; (4)Output Short Circuit:Continuous
Features
The features of LF442 can be summarized as (1)1/10 supply current of a LM1458:400 μA (max); (2)Low input bias current:50 pA (max); (3)Low input offset voltage:1 mV (max); (4)Low input offset voltage drift:10 μV/°C (max); (5)High gain bandwidth:1 MHzn High slew rate:1 V/μs; (6)High input impedance:1012Ω; (7)High gain VO = ±10V, RL = 10k:50k (min)
Diagrams
<P><IMG alt="LF442 Block Diagram" src="http://www.seekic.com/uploadfile/ic-mfg/2012727205939751.jpg" border=0></P>
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||||||||||
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 LF442 |
Other |
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Data Sheet |
Negotiable |
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LF442ACN |
National Semiconductor (TI) |
Operational Amplifiers - Op Amps |
Data Sheet |
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LF442AMH |
National Semiconductor (TI) |
Operational Amplifiers - Op Amps |
Data Sheet |
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LF442AMH/NOPB |
National Semiconductor (TI) |
Operational Amplifiers - Op Amps |
Data Sheet |
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LF442C |
Other |
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Data Sheet |
Negotiable |
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LF442CN |
National Semiconductor (TI) |
Operational Amplifiers - Op Amps |
Data Sheet |
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LF442CN/NOPB |
National Semiconductor (TI) |
Operational Amplifiers - Op Amps DUAL LOW PWR JFET IN OP AMP |
Data Sheet |
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LF442ACN/NOPB |
National Semiconductor (TI) |
Operational Amplifiers - Op Amps DUAL LOW PWR JFET IN OP AMP |
Data Sheet |
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