參數(shù)資料
型號(hào)： LA3410
廠商： Sanyo Electric Co.,Ltd.
英文描述： VCO Non-Adjusting PLL FM MPX Stereo Demodulator with FM Accessories(帶FM附件VCO無(wú)需調(diào)整PLL FM MPX立體聲解調(diào)器)
中文描述： 壓控振蕩器非盈豐調(diào)整鎖相環(huán)調(diào)頻立體聲調(diào)頻解調(diào)器與配件（帶調(diào)頻附件壓控振蕩器無(wú)需調(diào)整盈豐鎖相環(huán)調(diào)頻立體聲解調(diào)器）
文件頁(yè)數(shù)： 7/13頁(yè)
文件大小： 449K
代理商： LA3410
LA3410
No.1407–7/13
(4) When C9 is decreased, the capture range will
widen but the stereo main distortion at f=10kHz
will worsen (beat distortion). This data is shown
in Fig. 4-E. Set C2 so that the stereo distortion
is kept rather low.
(5) The data on pilot level vs. capture range is
shown in Fig. 4-F to G. It is necessary to set the
loop filter constants, with the input pilot level
considered, so that the capture range becomes
wide. For example, when the LA1260 is used
for IF IC, the minimum demodulation output
will be 183mV (100% mod) and the stereo op-
eration must be performed at pilot level 12mV
with a pilot margin allowed. In this case,
C2=0.1
μ
F, R1=6.8 to 10k
are recommended.
5.Improvement in sub, stereo (R) distortions worsened at low frequencies.
There are some cases where the sub, stereo (R) distortions are worsened
at low frequencies. One cause for this worsening is the phase shift be-
tween 38kHz and 19kHz in the flip-flop inside the IC. This shift is im-
proved by connecting a phase compensating capacitor across pin 3 and
GND as shown in Fig. 5. The CD value differs with each IF (the phase
shift between the sub signal and pilot signal in the composite signal
differs with each IF). An adequate value is 200 to 1500pF.
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LA3460 FM NC + MPX Demodulator for Car Stereo Tuners
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