MB88347PFV 参数 Datasheet PDF下载

MB88347

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DATA FOR CHIP CONTROL

1. Data for Shift Register

• MB88347 has 12-bit shift register for chip control.

• It is necessary to set the data as following configuration to 12-bit shift register.

• The data consists of 12 bits: a 4-bit address selection and an 8-bit D/A converter control signal.

Last

(LSB)

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

First

(MSB)

D11

D/A converter control signal

Address selected signal

2. D/A Converter Control Signal

Input data signal

D0

0

1

0

0

1

D1

0

0

1

1

1

D2

0

0

0

1

1

D3

0

0

0

1

1

D4

0

0

0

1

1

D5

0

0

0

1

1

D6

0

0

0

1

1

D7

0

0

0

1

1

D/A converter output voltage

= V

SS

:

= V

LB

+

V

SS

:

= V

LB

×

2

+

V

SS

:

= V

LB

×

254

+

V

SS

:

= V

DD

:

V

LB

= (V

DD

- V

SS

) /255

5