SM5272B-4 Ver la hoja de datos (PDF) - Samhop Mircroelectronics

Número de pieza

componentes Descripción

Fabricante

SM5272B-4

312 RF DECODER

Samhop Mircroelectronics 

三合微科股份有限公司

SAMHOP Microelectronics Corp.

SM5272B

312 RF DECODER

Single Resistor Oscillator

SM5272B's oscillator be constructed by connecting a resistor between OSC1 and OSC2 pin.

SM5272B's OSC frequency must be 1.4 to 6.8 times more than SM5262B.

Encoder OSC Frequency

100

90

80

70

60

KHz 50

40

30

20

10

0

2.5

6

9

R = 510K

R = 1.2 M

R = 2.7 M

R = 3.0 M

R = 3.3 M

R = 4.3 M

12

15 VOLTAGE

Decoder OSC Frequency

300

250

200

180

KHz 100

50

0

2.5

R = 100 K

R = 300 K

R = 620 K

R = 680 K

R = 820 K

R = 1.0 M

6

9 VOLTAGE

Suggested oscillator resistor of SM5262B/ SM5272B:

SM5262B

4.7M OHM

3.0M OHM

2.2M OHM

1.2M OHM

SM5272B

750K OHM

390K OHM

270K OHM

160K OHM

Page 9

OCT. 26, 2001

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