LA1844 Sanyo Semiconductor Corporation, LA1844 Datasheet
LA1844
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LA1844 Summary of contents
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... Ordering number : EN7930A LA1844 LA1844M Overview The LA1844, LA1844M 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. Features • ...
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... Total harmonic distortion THD AM1 THD AM2 SD sensitivity SD-Sens Local oscillator buffer output V OSC-AM IF counter buffer output V IFBuff-AM LA1844,LA1844M Conditions Ta ≤ 45°C Ta ≤ 80°C Conditions Conditions With no input signal 100dBµ, 100% modulation 1kHz 100dBµ, 100% modulation 1kHz 100dBµ, 100% modulation 1kHz 100dBµ ...
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... Package Dimensions unit : mm 3067B [1844M] 21 0.9 0.95 (0.71) 1.78 0.48 LA1844,LA1844M SANYO : DIP24S(300mil) 3112B [LA1844] 12 1.0 0.35 (0.75) SANYO : MFP24S(300mil) No.7930A-3/11 0.15 ...
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... Block Diagram LA1844,LA1844M No.7930A-4/11 ...
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... Test Circuit LA1844,LA1844M No.7930A-5/11 ...
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... Phase comparator V CC -1.0 low-pass filter (AM/FM switching) LA1844,LA1844M Equivalent circuit Input impedance 330Ω Connect the mixer coil between this pin and V CC Vreg = 2.4V Input impedance 2kΩ Active low Open collector The 600BEAS-10471 (Toko Mfg. Co., Ltd.) is recommended for detector coil ≤ ...
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... S meter, 0.2 (FM) AM AGC 0.9 (AM) LA1844,LA1844M Equivalent circuit The device is forced to monaural when a current of over 50µA flows from this pin. The VCO is stopped when a current of over 200µA flows from this pin. Output impedance 3.3kΩ Inverting input pin RNF = 20kΩ ...
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... Oscillator buffer V CC -1.4 output sensitivity adjustment LA1844,LA1844M Equivalent circuit Must be used at the same potential as pin 22 The FM SD bandwidth can be adjusted with the external resistor connected between this pin and pin 3 (REG) Connect the oscillator coil between this pin and pin ...
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... LA1844,LA1844M No.7930A-9/11 ...
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... LA1844,LA1844M No.7930A-10/11 ...
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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 June, 2006. Specifications and information herein are subject to change without notice. LA1844,LA1844M PS No.7930A-11/11 ...