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LA1833N

System-on-Chip Tuner IC for Home Stereo Systems

SANYO -> Panasonic 

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Pin No.

Pin

Voltage (V)

LA1833N, 1833NM

Functional description

S meter

20

Also functions as the

AM AGC

0.2 (FM)

0.9 (AM)

Internal load resistor R = 13.9 kΩ.

The SD response speed during seek

operations is set by the value of the

external capacitor connected to pin 20.

21

AM RF-IN

Vreg

Pin 21 and pin 22 (the AFC voltage) are

used at the same potential

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.

23

OSC

The oscillator coil is connected between

pin 23 and pin 9 (the VCC voltage).

VCC

Note: The oscillator coil impedance

(secondary side) must be at least

5 kΩ.

Oscillator buffer

24

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 kΩ.

Equivalent circuit

20

R

ILA00235

21

ILA00236

22

ILA00237

23

ILA00238

R

24

ILA00239

No. 6568-5/10

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