8143 Datasheet, PDF(17/24 Page) Maxwell Technologies – 12-Bit Serial Daisy Chain D/A Converter

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8143 Datasheet, PDF (17/24 Pages) Maxwell Technologies – 12-Bit Serial Daisy Chain D/A Converter

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12-Bit Serial Daisy-Chain D/A Converter

8143

TABLE 5. BIPOLAR (OFFSET BINARY) CODE TABLE

DIGITAL INPUT

MSBLSB

NOMINAL ANALOG OUTPUT (VOUT AS

SHOWN IN FIGURE 18)

1 1 1 11 1 1 11 1 1 1

1 0 0 00 0 0 00 0 0 1

1 0 0 0 0 0 0 00 0 0 0

0 1 1 11 1 1 11 1 1 1

0 0 0 00 0 0 00 0 0 1

0 0 0 00 0 0 00 0 0 0

VREF (2047/2048)

VREF (1/2048)

-VREF (1/2048)

-VREF (2047/2048)

-VREF (2048/2048)

Daisy-Chaining 8143

Many applications use multiple serial input DACs that use numerous interconnecting lines for address decoding and

data lines. In addition, they use some type of buffering to reduce loading on the bus. The 8143 is ideal for just such an

application. It not only reduces the number of interconnecting lines, but also reduces bus loading. The 8143 can be

daisy-chained with only three lines: one data line, one CLK and one load line, see Figure 19.

FIGURE 18. BIPOLAR OPERATION (4-QUADRANT, OFFSET BINARY)

07.23.03 REV 3

All data sheets are subject to change without notice 17

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