MCP4728 datasheet(27/50 Pages) MICROCHIP

27 / 50 page

Quick Start Instructions

DS51837A-page 23

Figure 1-15:

VOUT for Example 4: Multi-Write Command for Channels A and B with VREF = VDD

and Gain = 1.

OUT

REF

()

4096

-------------------------------G

Where:

VREF

=VDD if external VREF is selected

2.048V if internal VREF is selected.

Input code

LSB

VREF/4096

OUTA

4095

()

4096

----------------------------------

4096

–

4096

---------------------

⎝⎠

⎛⎞

DD 1

4096

------------

–

⎝⎠

⎛⎞

LSB

–

In Script file, Dn for Channel A = 0FFF (hex) = 4095 (decimal)

(A) Channel A Output:

Note that Dn and Gain (Gx) must be selected with the following conditions:

OUT

REF

()

4096

-------------------------------G

≤

(B) Channel B Output:

In Script file, Dn for Channel B = 0800 (hex) = 2048 (decimal)

OUTB

2048

()

4096

----------------------------------

-----------

No change. The device maintains its output with previous settings.

(D) Channel D Output:

No change. The device maintains its output with previous settings.

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