LV25200M_10 Datasheet, PDF (15/45 Pages) Sanyo Semicon Device – Single chip Tuner IC for Car Radio

Continued from preceding page.
Pin
Function
39 MRC output
(for SNC Control)
LV25200M
Discription
Time constant for Multipath-Noise Detector is
determined with the following:
100Ω and C2 during discharge
Iconst and C2 during charge
Iconst can be changed over with 2Bit
(MRC-Time-Constant)
Unit (Resistance: Ω, Capacitance: F)
Internal Equivalent Circuit
41 MRC AC input pin
From AC-S-meter (pin 40), enter the AC
component.
Amp-Gain, and frequency characteristics are
determined with
C41, (R41+1kΩ [internal resistance]) and 30kΩ
(internal resistance).
Amp-Gain can be controlled with 2Bit.
42 Mute Drive
43 AFC
1 The MUTE time constant is determined as
follows by CR:
• Attack time
TA=10kΩ (R1) × C42
• Release time
TR=50kΩ (R2) × C42
2 Noise convergence adjustment
3 MUTE OFF function
MUTE is turned OFF when pin 42 is short-
circuited with GND.
Null voltage
As compared with pin 46 2.7V
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No.A0976-15/45