2-Wire Serial 8-Bit DACs with

Rail-to-Rail Outputs

10

______________________________________________________________________________________

(

)

SDA

0

START

CONDITION

ADDRESS BYTE

ACK

10

1

or

AD3

1

or

AD2AD1 AD0 0

0

00

00000

0

0

0

1

11

11

11

1

STOP

CONDITION

COMMAND BYTE

(ADDRESSING DAC0)

ACK

OUTPUT BYTE

(FULL SCALE)

ACK

DAC OUTPUT CHANGES HERE:

DAC0 GOES TO FULL SCALE.

DAC0 INPUT LATCH

SET TO FULL SCALE

(

)

Figure 8a. Setting One DAC Output (MAX517/MAX518/MAX519)

(

)

SDA

SDA

0

START

CONDITION

ADDRESS BYTE

ACK

ACK

10

1

or

AD3

1

or

AD2 AD1 AD0 0

0

00

00000

0

0

1

1

11111

1

0

0

00

00

00

00

1

1

11

11

11

1

STOP

CONDITION

OUTPUT BYTE

(FULL SCALE)

COMMAND BYTE

(ADDRESSING DAC0)

ACK

OUTPUT BYTE

(FULL SCALE)

ACK

COMMAND BYTE

(ADDRESSING DAC1)

ACK

DAC OUTPUTS CHANGE HERE:

DAC0 AND DAC1 GO TO FULL SCALE.

DAC0 INPUT LATCH

SET TO FULL SCALE

(

)

(

)

DAC1 INPUT LATCH

SET TO FULL SCALE

Figure 8b. Setting Both DAC Outputs (MAX518/MAX519)

SDA

0

START

CONDITION

ADDRESS BYTE

ACK

10

1

or

AD3

1

or

AD2 AD1 AD0 0

0

0

0 0001

(PD)

(PD)

STOP

CONDITION

COMMAND BYTE

ACK

DEVICE ENTERS

POWER-DOWN STATE

(

)

SDA

0

START

CONDITION

ADDRESS BYTE

ACK

10

1

or

AD3

1

or

AD2 AD1AD0 0

0

0

0

00001

0

1

11

1

1

11

1

STOP

CONDITION

COMMAND BYTE

(ADDRESSING DAC0)

ACK

OUTPUT BYTE

(FULL SCALE)

ACK

(a)

(b)

DEVICE ENTERS POWER-DOWN STATE.

DAC0 OUTPUT LATCH SET TO FULL SCALE.

NOTE: X = DON'T CARE

DAC0 INPUT LATCH

SET TO FULL SCALE.

X

X

X

X

X

(

)

(

)

Figure 9. Entering the Power-Down State