S1T8515A 查看數據表（PDF） - Samsung

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S1T8515A

FM IF RECEIVER FOR FLEX PAGER

Samsung 

FM IF RECEIVER FOR FLEX PAGER

S1T8515A

TEST CIRCUIT

RF Input

Reg. out

2.2µ +

51

1000p

Alarm out FSKO1 FSKO2 Vcc

QC1 QC2 FSKR2 RSSI

100K

100K

100K

LH L

+

10µ

0.1µ

MI GND REGO REGC

AO FSKO1 FSKO2 BSC QC1 QC2 FSKR2 RSSI

24

23

22

21

20

19

18

17

16

15

14

13

2nd

MIX

1.0V Regulator Alarm

FSK

Comparator

Quick

Charge

X-tal

Osc.

Limiting IF

Amplifier

Quad

Detector

1

2

3

4

5

6

7

8

9

OSCI OSCO MO Vcc

LI

LD FSKR1 QD C1

Bit-rate Filter

10

11

C2 C3

12

FIL VAR

20.945MHz

56p

39p

0.1µ

CFMW455E

+

1000p 1200p 1500p

10µ CDBM

455

3.3K

HL

+

10u

5

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