LA1833N datasheet(5/10 Pages) SANYO

No de pièce	LA1833N

Description	System-on-Chip Tuner IC for Home Stereo Systems

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Fabricant	SANYO [Sanyo Semicon Device]

Site Internet	https://www.sanyo-av.com/us/

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5 / 10 page

No. 6568-5/10

LA1833N, 1833NM

Continued from preceding page.

Pin No.

Voltage (V)

Functional description

Equivalent circuit

20

S meter

Also functions as the

AM AGC

0.2 (FM)

0.9 (AM)

ILA00235

20

R

Internal load resistor R = 13.9 k

Ω.

The SD response speed during seek

operations is set by the value of the

external capacitor connected to pin 20.

21

ILA00236

21

AM RF-IN

Vreg

Pin 21 and pin 22 (the AFC voltage) are

used at the same potential

ILA00237

22

AFC

Vreg

The FM SD bandwidth can be adjusted by

an external resistor connected between

pin 22 and pin 3 (the regulator voltage).

Note: A bandwidth of 180 kHz or higher is

appropriate for the FM SD bandwidth.

ILA00238

23

OSC

VCC

The oscillator coil is connected between

pin 23 and pin 9 (the VCC voltage).

Note: The oscillator coil impedance

(secondary side) must be at least

5 k

Ω.

ILA00239

24

R

24

Oscillator buffer

Also functions as the

FM SD adjustment

VCC – 1.4

The FM SD sensitivity can be adjusted

with an external resistor on pin 24.

R = 200

Ω

Note: The resistance of the pin 24 external

resistor must be at least 3.3 k

Ω.

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