lf147 - LF147/LF347 Wide Bandwidth Quad JFET Input...

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LF147/LF347 Wide Bandwidth Quad JFET Input Operational Amplifiers General Description The LF147 is a low cost, high speed quad JFET input opera- tional amplifier with an internally trimmed input offset voltage (BI-FET II™ technology). The device requires a low supply current and yet maintains a large gain bandwidth product and a fast slew rate. In addition, well matched high voltage JFET input devices provide very low input bias and offset currents. The LF147 is pin compatible with the standard LM148. This feature allows designers to immediately up- grade the overall performance of existing LF148 and LM124 designs. The LF147 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, low input bias current, high input impedance, high slew rate and wide bandwidth. The device has low noise and offset voltage drift. Features n Internally trimmed offset voltage: 5 mV max n Low input bias current: 50 pA n Low input noise current: n Wide gain bandwidth: 4 MHz n High slew rate: 13 V/μs n Low supply current: 7.2 mA n High input impedance: 10 12 n Low total harmonic distortion A V =10,: <0.02% R L =10k, V O =20 Vp-p, BW=20 Hz-20 kHz n Low 1/f noise corner: 50 Hz n Fast settling time to 0.01% :2 μ s Simplified Schematic Connection Diagram BI-FET II™ is a trademark of National Semiconductor Corporation. 1 4 Quad DS005647-13 Dual-In-Line Package DS005647-1 Note 1: Available per SMD #8102306, JM38510/11906. Top View Order Number LF147J, LF347M, LF347BN, LF347N or LF147J/883 (Note 1) See NS Package Number J14A, M14A or N14A May 1999 LF147/LF347 Wide Bandwidth Quad JFET Input Operational Amplifiers © 1999 National Semiconductor Corporation DS005647 www.national.com
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Absolute Maximum Ratings (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. LF147 LF347B/LF347 Supply Voltage ±22V ±18V Differential Input Voltage ±38V ±30V Input Voltage Range ±19V ±15V (Note 3) Output Short Circuit Continuous Continuous Duration (Note 4) Power Dissipation 900 mW 1000 mW (Notes 5, 11) T j max 150˚C 150˚C θ jA Ceramic DIP (J) Package 70˚C/W Plastic DIP (N) Package 75˚C/W Surface Mount Narrow (M) 100˚C/W LF147 LF347B/LF347 Surface Mount Wide (WM) 85˚C/W Operating Temperature (Note 6) (Note 6) Range Storage Temperature Range -65˚C T A 150˚C Lead Temperature (Soldering, 10 sec.) 260˚C 260˚C Soldering Information Dual-In-Line Package Soldering (10 seconds) 260˚C Small Outline Package Vapor Phase (60 seconds) 215˚C Infrared (15 seconds) 220˚C See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount devices. ESD Tolerance (Note 12) 900V DC Electrical Characteristics (Note 7) Symbol Parameter Conditions LF147 LF347B LF347 Units Min Typ Max Min Typ Max Min Typ Max V OS Input Offset Voltage R S =10 k ,T A =25˚C 1 5 3 5 5 10 mV Over Temperature 8 7 13 mV V OS / T Average TC of Input Offset R S =10 k 10 10 10 μV/˚C Voltage I OS Input Offset Current T j =25˚C, (Notes 7, 8) 25 100 25 100 25 100 pA
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This note was uploaded on 12/28/2011 for the course ECE 2C taught by Professor Yue during the Fall '08 term at UCSB.

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lf147 - LF147/LF347 Wide Bandwidth Quad JFET Input...

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