LV25400W Sanyo Semicon Device, LV25400W Datasheet - Page 22

• Manufacturer Part Number: LV25400W
• Description: DSP Tuner Front End
• Manufacturer: Sanyo Semicon Device

www.DataSheet.co.kr
Continued from preceding page.
Pin No.
48
49
50
51
52
AM RF-AGC-Bypass
FM IF-W_IN1
FM IF-W_IN2
AM RF-AGC
AM ANT-D
Pin
Wideband FM IF AGC clamp input
RF AGC rectifying capacitor
Determines the distortion for
low-frequency modulation.
Increasing the size of C50 and C 51 :
Distortion → Improves
Response → Becomes slower
Reducing the size of C50 and C 51 :
Distortion → Degrades
Response → Becomes faster
Provides the PIN diode drive current.
I52 = 6mA
This is the antenna dumping current.
Description
LV25400W
C59
1µF
C64
10µF
+
+
51
50
48
1kΩ
10kΩ
500Ω
V CC_8V
5KΩ
Equivalent Circuit
500Ω
500Ω
1KΩ
49
10kΩ
200Ω
100Ω
V CC (PIN 58)
15KΩ
750Ω
V CC (40pin)
52
Continued on next page.
500Ω
20kΩ
No.A0633-22/42
1kΩ
Datasheet pdf - http://www.DataSheet4U.net/