LA1845NV 查看數據表（PDF） - SANYO -> Panasonic

零件编号

产品描述 (功能)

比赛名单

LA1845NV

Single-Chip Home Stereo IC

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

Pin function

Pin voltage

10 AM/FM IF counter

0V

output, output

control switch, mute

switch

11 Phase comparator

low-pass filter

(AM/FM switching)

VCC-1.0

LA1845NV

Equivalent circuit

10

Notes

V10≤0.5V : Reception state

1.4V≤V10≤2.2V : Muting on

V10≥3.5V : IF counter output and muting on

11

The device operates in AM mode when a current of

over 200µA flows from pin. 12.

12 Pilot detector low-

pass filter (Forced

VCC-1.0

12

mono) (VCO stop)

13 L outputs

14 R outputs

3.2V

15 Pilot canceler

output

Vreg

16 Decoder input

Vreg

17 PLL input

Vreg

13

( 14 )

15

3

RNF

16

17

The device is forced to monaural when a current of

over 50µA flows from this pin.

The VCO is stopped when a current of over 200µA

flows from this pin.

The limit values for the resistor are the same as

those for pin 11.

Output impedance ro = 3.3kΩ

Inverting input pin

RNF = 20kΩ

Input impedance ri = 20kΩ

18 FM demodulator

Vreg+0.7

18

Output impedance ro = 2.3kΩ

output

The channel separation can be adjusted with an

external capacitor connected between this pin and

ground.

Continued on next page.

No.7931-4/10

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