LM1800 NSC | Alldatasheet

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Features

Y Automatic stereo/monaural switching Y 45 dB power supply rejection Y No coils, all tuning performed with single potentiometer Y Wide operating supply voltage range Y Excellent channel separation Y Emitter follower output buffers Connection Diagram Order Number LM1800N See NS Package Number N16A TL/H/7888–1 Top View Typical Application TL/H/7888–2 C1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage 18V Power Dissipation (Note 3) 1500 mW Operating Temperature Range 0 §Ct o a70§C Operating Supply Voltage Range a10V to a18V Storage Temperature Range b65§Ct o a150§C Lead Temperature (Soldering, 10 sec) 260 §C Electrical Characteristics (Note 1) Parameter Conditions Min Typ Max Units Supply Current Lamp ‘‘Off’’ 21 30 mA Lamp Driver Saturation 100 mA Lamp Current 1.3 1.8 V Lamp Driver Leakage 1.0 nA Pilot Level for Lamp ‘‘ON’’ Pin 11 Adjusted to 19.00 kHz 15 20 mVrms Pilot Level for Lamp ‘‘OFF’’ Pin 11 Adjusted to 19.00 kHz 3.0 7.0 mVrms Stereo Lamp Hysteresis 3.0 6.0 dB Stereo Channel Separation 100 Hz (Note 2) 40 dB

1000 Hz (Note 2) 30 45 dB

10000 Hz (Note 2) 45 dB

Monaural Channel Unbalance 200 mVrms, 1000 Hz Input 0.3 1.5 dB Monaural Voltage Gain 200 mVrms, 400 Hz Input 140 200 260 mVrms Total Harmonic Distortion 500 mVrms, 1000 Hz Input 0.4 1.0 % Total Harmonic Distortion 500 mVrms, 1000 Hz Input, 1800A Only 0.1 0.3 % Capture Range 25 mVrms of Pilot g2.0 g6 . 0 %o ff o Supply Ripple Rejection 200 mVrms of 200 Hz Ripple 35 45 dB Dynamic Input Resistance 20 45 k X Dynamic Output Resistance 900 1300 2000 X SCA Rejection (Note 4) 70 dB Ultrasonic Freq. Rejection Combined 19 and 38 kHz, Ref. to Output 33 dB Note 1: TA e 25§C and V a e 12V unless otherwise stated. Note 2: The stereo input signal is made by summing 123 mVrms LEFT or RIGHT modulated signal with 25 mVrms of 19 kHz pilot tone, measuring all voltages with an average responding meter calibrated in rms. The resulting waveform is about 800 mVp-p. Note 3: For operation in ambient temperatures above 25 §C, the device must be derated based on a 150 §C maximum junction temperature and a thermal resistance of 80 §C/W junction to ambient. Note 4: Measured with a stereo composite signal consistency of 80% stereo, 10% pilot and 10% SCA as defined in the FCC Rules on Broadcasting. Note 5: VCO ‘‘OFF’’ curve represents the distortion attainable using good 19 kHz and 38 kHz filters.

Typical Performance Characteristics Supply Ripple Rejection TL/H/7888–3 Channel Separation TL/H/7888–4 Monaural Distortion vs Input Amplitude TL/H/7888–5 Monaural Distortion vs Frequency TL/H/7888–6

LM1800 Phase-Locked Loop FM Stereo Demodulator Physical Dimensions inches (millimeters) Molded Dual-In-Line Package (N) Order Number LM1800N LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life systems which, (a) are intended for surgical implant support device or system whose failure to perform can into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life failure to perform, when properly used in accordance support device or system, or to affect its safety or with instructions for use provided in the labeling, can effectiveness. be reasonably expected to result in a significant injury to the user. National Semiconductor National Semiconductor National Semiconductor National Semiconductor Corporation Europe Hong Kong Ltd. Japan Ltd.

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a49) 0-180-530 85 86 13th Floor, Straight Block, Tel: 81-043-299-2309 Arlington, TX 76017 Email: cnjwge @ tevm2.nsc.com Ocean Centre, 5 Canton Rd. Fax: 81-043-299-2408 Tel: 1(800) 272-9959 Deutsch Tel: ( a49) 0-180-530 85 85 Tsimshatsui, Kowloon Fax: 1(800) 737-7018 English Tel: ( a49) 0-180-532 78 32 Hong Kong Fran3ais Tel: ( a49) 0-180-532 93 58 Tel: (852) 2737-1600 Italiano Tel: ( a49) 0-180-534 16 80 Fax: (852) 2736-9960 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.