LA1837 Sanyo Semiconductor Corporation, LA1837 Datasheet
LA1837
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LA1837 Summary of contents
Page 1
... Ordering number : EN5688 Overview The LA1837 is a single-chip AM/FM IF and MPX IC that supports electronic tuning and was developed for use in home stereo systems optimal for use in automatic station selection systems that use the SD and IF counting techniques. Functions AM: RF amplifier, mixer, oscillator, IF amplifier, ...
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... IFBuff-AM ST-IF output V STIF-AM S-meter output V SM-AM Pd max – Ta Ambient temperature, Ta – °C LA1837 = the specified Test Circuit CC Conditions – V AFC With no input 100 dBµ, 100% mod. The pin 16 output 100 dBµ, 100% mod. The pin 16 output/pin 17 output 100 dBµ, 100% mod. The pin 16 output 100 dBµ ...
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... Block Diagram Test Circuit Diagram LA1837 DECODER ANTI-BIRDIE No. 5688-3/9 ...
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... Vreg 5 GND LED LED AM-IF output detector 9 CC LA1837 · IFT YD-1073-1 (Mitsumi Electric Co., Ltd 86T ≥ 270 µH - 22T f = 10.7 MHz Includes an internal 82-pF capacitor. Pin description Input impedance ri = 330 Ω Connect the mixer coil between this pin and V ...
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... Post amplifier input and output Vreg 3.5 V MPX output 21 3.5 V LA1837 Pin description Recommended narrow band CF: BFU450 C4N (Murata Mfg. Co., Ltd.) If the narrow band SD is not used, bypass this circuit with a 50-Ω resistor and a 0.047- µF capacitor connected in series kΩ L ...
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... Vreg 28 REG Vreg 29 OSC Vreg Oscillator buffer output, 1.6 V (FM sensitivity 1.3 V (AM) adjustment LA1837 Pin description Input impedance kΩ i Output impedance r = 3.0 kΩ o The separation can be modified by inserting a capacitor between this pin and ground. Set V sub/V main to be about 0 dB. ...
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... Input – dBµ FM THD Band Characteristics Frequency, f – MHz C Separation vs. Frequency Characteristics Frequency, freq – kHz Capture Range Characteristics Pilot – mV LA1837 FM THD/V FM THD/VSM Characteristics Characteristics SM Iinput – dBµ Distortion vs. Frequency Characteristics Frequency, freq – kHz Adjacent Channel Interference Rejection Ratio Referenced to the L-R demodulated output ...
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... Characteristics SM Input – dBµ AM Detector Output Frequency Characteristics (2) Frequency, fm – kHz Separation vs. Ambient Temperature Characteristics Ambient temperature, Ta – °C LA1837 Overall AM Characteristics Input – dBµ AM Detector Output Frequency Characteristics (1) Frequency, fm – kHz Distortion vs. Ambient Temperature Characteristics Ambient temperature, Ta – °C Output ...
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... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of August, 1997. Specifications and information herein are subject to change without notice. LA1837 No. 5688-9/9 ...