LV25200M_10 Datasheet, PDF (14/45 Pages) Sanyo Semicon Device – Single chip Tuner IC for Car Radio

Continued from preceding page.
Pin
Function
34 MPX-PLL input
LV25200M
Discription
LPF formed with internal resistance 30kΩ and
pin 34 eternal capacity
↓
HPF formed by subtracting the above LPS passage
signal from the Composite signal.
↓
Supply to MPX-PLL circuit
35 HCC capacitor pin
With pin 35 external capacity,
High-Cut frequency characteristics are set.
The value of internal resistance R35 is changed
over in AM/FM mode:
FM mode: R35=30kΩ
AM mode: R35=100kΩ
36 Noise detection
sensitivity
37 AGC adj pin
With the noise sensitivity setting pin of pin 36, set
the medium electric field (about 50dBμ). Then, with
the AGC-Adj pin of pin 37, carry out setting in the
weak field (20 to 30dBμ).
Unit (Resistance: Ω, Capacitance: F)
Internal Equivalent Circuit
38 AM/FM S-meter (DC) Current drive type S-meter output
Pin 38:
Eliminate the AC component by external capacity
40 AM/FM S-meter (AC) Pin 40:
Leaves the AC component
(Pin for NC noise extraction and for multipath noise
extraction)
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No.A0976-14/45