la1845nv Sanyo Semiconductor Corporation, la1845nv Datasheet
la1845nv
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la1845nv Summary of contents
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... Ordering number : ENN*7931 LA1845NV The LA1845NV is designed for use in mini systems and is a single-chip tuner IC that provides electronic tuning functions using SD/IF-count technique. It incorporates a pilot canceler and an adjustment-free MUX VCO circuit, thus allows additional parts to be reduced. Functions • amplifier, mixer, oscillator, IF amplifier, detector, AGC, SD, oscillator buffer, IF buffer, stereo IF output, AGC time constant switch • ...
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... Total Harmonic Distortion 1 80dBµ, 30% modulation 1kHz Total Harmonic Distortion 2 107dBµ, 30% modulation 1kHz SD Sensitivity 0% modulation Local Oscillator Buffer Output With no input signal IF Counter Buffer Output 23dBµ LA1845NV Conditions min 230 200 Conditions min Conditions min 100 140 ...
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... Vreg 5 GND 0V 6 Tu-LED ST-LED/AF-IF output 8 FM detector LA1845NV Equivalent circuit Input impedance 330Ω Connect the mixer coil between this pin and Vreg = 2.1V 3 Input impedance 2kΩ 4 Active low Open collector 6 7 The 600BEAS-10471 (Toko Mfg. Co., Ltd.) is recommended for detector coil ...
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... Decoder input Vreg 17 PLL input Vreg 18 FM demodulator Vreg+0.7 output LA1845NV Equivalent circuit V 10 ≤0.5V : Reception state 1.4V≤V 10 ≤2.2V : Muting ≥3. counter output and muting on 10 The device operates in AM mode when a current of 11 over 200µA flows from pin. 12. ...
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... Vreg 23 OSC Oscillator buffer V CC -1.4 output sensitivity adjustment LA1845NV Equivalent circuit Output impedance 3.3kΩ 19 The resistance of the built-in resistor R is 13.9kΩ. The SD response during seek operation is determined with the external capacitor connected to 20 this pin. R Must be used at the same potential as pin 22. ...
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... Equivalent Circuit Block Diagram LA1845NV No.7931-6/10 ...
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... Test Circuit LA1845NV No.7931-7/10 ...
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... LA1845NV No.7931-8/10 ...
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... LA1845NV No.7931-9/10 ...
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... SANYO Semiconductor 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 September, 2004. Specifications and information herein are subject to change without notice. LA1845NV PS No.7931-10/10 ...