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LV25400W_0712 Datasheet, PDF (22/42 Pages) Sanyo Semicon Device – For Automotive Applications DSP Tuner Front End | |||
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Continued from preceding page.
Pin No.
Pin
48
FM IF-W_IN1
49
FM IF-W_IN2
LV25400W
Description
Wideband FM IF AGC clamp input
48
Equivalent Circuit
VCC(40pin)
49
20kâ¦
10kâ¦
10kâ¦
50
AM RF-AGC
RF AGC rectifying capacitor
51
AM RF-AGC-Bypass Determines the distortion for
low-frequency modulation.
Increasing the size of C50 and C 51 :
Distortion â Improves
Response â Becomes slower
VCC(PIN 58)
5K⦠1Kâ¦
15Kâ¦
Reducing the size of C50 and C 51 :
Distortion â Degrades
1kâ¦
1kâ¦
Response â Becomes faster
51
C59 +
1µF
750â¦
500â¦
500â¦
C64
50
10µF +
52
AM ANT-D
Provides the PIN diode drive current.
I52 = 6mA
This is the antenna dumping current.
100â¦
500â¦
VCC_8V
52
200â¦
500â¦
Continued on next page.
No.A0633-22/42
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