Part # LM1818 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM1818 Electronically Switched Audio Tape System


Part Details:

LM1818 April 1987 Electronically LM1818 Electronically Switched Audio Tape System General Description Features The LM1818 is a linear integrated circuit containing all of the Y Electronic record play switching active electronics necessary for building a tape recorder Y 85 dB power supply rejection deck (excluding the bias oscillator) The electronic functions Y Motional peak level meter circuitry on the chip include a microphone and playback preamplifi- Y Low noise preamplifier circuitry er record and playback amplifiers a meter driving circuit Y 3 5V to 18V supply operation and an automatic input level control circuit The IC features Switched Y Provision for external low noise input transistor complete internal electronic switching between the recordand playback modes of operation The multipole switchused in previous systems to switch between record andplayback modes is replaced by a single pole switch therebyallowing for more flexibility and reliability in the recorder de-sign Monaural operation Figure 9 Audio Typical Applications Tape System 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 Absolute Maximum RatingsIf Military Aerospace specified devices are required Operating Temperature 0 C to a70 C please contact the National Semiconductor Sales Junction Temperature 150 C Office Distributors for availability and specifications Minimum Voltage on Any Pin b0 1 VDC Supply Voltage 18V Maximum Voltage on Pins 2 and 5 0 1 VDC Package Dissipation (Note 1) 1560 mW Maximum Current Out of Pin 14


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LM1818.pdf Datasheet