Rainbow-electronics MAX5547 Bedienungsanleitung PDF herunterladen (Seite 10)

MAX5547

Dual, 10-Bit, Current-Sink Output DAC

10 ______________________________________________________________________________________

CONTROL BITS

MSB

DATA BITS LSB REGISTER FUNCTION

C2 C1 C0 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 S1 S0

0 00XXXXXXXXXX00

External reference mode (default

state). Connect an external voltage

source at REF from +2.45V to

+2.55V.

0 00XXXXXXXXXX00

Internal reference mode. Internal

reference is +2.5V.

010

10-bit data

Load DAC register A and set I

OUTA

full-scale range to 1.2mA.

011

10-bit data

Load DAC register A and set I

OUTA

full-scale range to 3.6mA.

100

10-bit data

Load DAC register B and set I

OUTB

full-scale range to 1.2mA.

101

10-bit data

Load DAC register B and set I

OUTB

full-scale range to 3.6mA.

110

10-bit data

Load DAC registers A and B and

set I

OUTA

and I

OUTB

full-scale

ranges to 1.2mA (default state).

111

10-bit data

Load DAC registers A and B and

set I

OUTA

and I

OUTB

ranges to

3.6mA.

Table 1. Command Word Summary

X = Don’t care. Unused codes are reserved for factory use.

BINARY DAC CODE

OUT

11 1111 1111

10 0000 0000

00 0000 0001

00 0000 0000 0

Table 2. Ideal DAC Output Code Table

1023

512

1023

Chip Information

PROCESS: BiCMOS

1 2 ... 5 6 7 8 9 10 11 12

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