7183/84-011309-4

Figure 4. Bias resistance vs pulse width. R in k .

Figure 5. Bias resistance vs pulse width. R in M .

ENCODER

A CLOCK

B CLOCK

6

2

8

7

4

5

8

16

CK-UP

CK-DN

40193

3

A

B

RB

4

5

1

+V

Vss

LS7183

UPCK

DNCK

FIGURE 6A. TYPICAL APPLICATION FOR LS7183 IN x4 MODE

+V

RBIAS

Vss

MODE

ENCODER

A CLOCK

B CLOCK

6

2

8

7

8

16

3

A

B

4

5

1

+V

+V

CK

UP/DN

Vss

15

10

LS7184

RBIAS

4516

CLK

UP/DN

FIGURE 6B*. TYPICAL APPLICATION FOR LS7184N WITH MODE SELECTION

*See NOTE at bottom right of Page 1.

RB

Vss

MODE

SPDT (On - Off - On)

GND

B

A

B

MODE

CLK

U/D

RBIAS

A

2

3

5

4

6

7

8

100k

+5V

B1

W1

CLK

U/D

1

2

A1

A1

3

4

8

7

6

5

CS

B1

W1

FIGURE 7. Rotary Encoder Control of Digital Potentiometer

AD5220

LS7184

DIGITAL

POTENTIOMETER

GND

10k

10k

10k

10k

0.01uF

0.01uF

Part Number:

RE11CT-V1Y12-EF2CS

1

RBIAS vs Tow

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

5

10

20

51

100

220

430

750

R, kOhm

RBIAS vs Tow

0

20

40

60

80

100

120

140

160

1

2

3

5.1

6.8

8.2

10

R, MOhm