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LM1818

National Semiconductor
Part Number LM1818
Manufacturer National Semiconductor
Description Electronically Switched Audio Tape System
Published Mar 22, 2005
Detailed Description LM1818 Electronically Switched Audio Tape System April 1987 LM1818 Electronically Switched Audio Tape System General D...
Datasheet PDF File LM1818 PDF File

LM1818
LM1818

Overview
LM1818 Electronically Switched Audio Tape System April 1987 LM1818 Electronically Switched Audio Tape System General Description The LM1818 is a linear integrated circuit containing all of the active electronics necessary for building a tape recorder deck (excluding the bias oscillator) The electronic functions on the chip include a microphone and playback preamplifier record and playback amplifiers a meter driving circuit and an automatic input level control circuit The IC features complete internal electronic switching between the record and playback modes of operation The multipole switch used in previous systems to switch between record and playback modes is replaced by a single pole switch thereby allowing for more flexibility and reliability in the recorder design Monaural operation Figure 9 Features Y Y Y Y Y Y Electronic record play switching 85 dB power supply rejection Motional peak level meter circuitry Low noise preamplifier circuitry 3 5V to 18V supply operation Provision for external low noise input transistor Typical Applications www.
DataSheet.
net/ TL H 7894 – 1 FIGURE 1 Stereo Application Circuit (Left Channel Shown) VS e 15V Order Number LM1818N See NS Package Number N20A C1995 National Semiconductor Corporation TL H 7894 RRD-B30M115 Printed in U S A Datasheet pdf - http://www.
DataSheet4U.
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kr/ Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Package Dissipation (Note 1) Storage Temperature 18V 1560 mW b 65 C to a 150 C Operating Temperature Junction Temperature Minimum Voltage on Any Pin Maximum Voltage on Pins 2 and 5 Maximum Current Out of Pin 14 Lead Temperature (Soldering 10 sec ) 0 C to a 70 C 150 C b 0 1 VDC 0 1 VDC 5 mADC 260 C Electrical Characteristics VCC e 6V Parameter Operating Supply Voltage Range Supply Current Turn-ON Time Playback Signal to Noise TA e 25 C See Test Cir...


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