VOLTAGE

R = 100 K

R = 300 K

R = 620 K

R = 680 K

R = 820 K

R = 1.0 M

300

0

69

200

100

50

250

2.5

180

KHz

R = 510K

R = 1.2 M

R = 2.7 M

R = 3.0 M

R = 3.3 M

R = 4.3 M

100

KHz

0

69

12

15 VOLTAGE

90

80

70

60

50

40

30

20

10

2.5

Page 6

OCT. 2001

Single Resistor Oscillator

SM5262B'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

SM5262B

三合微科股份有限公司

Decoder OSC Frequency

Suggested oscillator resistor of SM5262B/ SM5272B:

SM5262B

SM5272B

4.7M OHM

750K OHM

3.0M OHM

390K OHM

2.2M OHM

270K OHM

1.2M OHM

160K OHM