Rainbow-electronics MAX5153 Manual do Utilizador descarregar pdf (Página 13)

__________Applications Information

Unipolar Output

Figure 9 depicts the MAX5152/MAX5153 configured for

unity-gain, unipolar operation. Table 2 lists the unipolar

output codes. To increase dynamic range, specific

gain configurations can be used as shown in Figure 10.

Bipolar Output

The MAX5152/MAX5153 can be configured for a bipo-

lar output, as shown in Figure 11. The output voltage is

given by the equation:

OUT

= V

REF

[((2 x NB) / 8192) - 1]

where NB represents the numeric value of the DAC’s

binary input code. Table 3 shows digital codes and the

corresponding output voltage for Figure 11’s circuit.

MAX5152/MAX5153

Low-Power, Dual, 13-Bit Voltage-Output DACs

with Configurable Outputs

______________________________________________________________________________________ 13

TO OTHER

SERIAL DEVICES

MAX5152

MAX5153

DIN

SCLK

MAX5152

MAX5153

DIN

SCLK

MAX5152

MAX5153

DIN

SCLK

DIN

SCLK

CS1

CS2

CS3

Figure 8. Multiple MAX5152/MAX5153s Sharing a Common DIN Line

MAX5152

MAX5153

DAC

REF_

OUT_

FB_

DGND

AGND

+5V/+3V

Figure 9. Unipolar Output Circuit

Table 2. Unipolar Code Table (Gain = +1)

00000 0000 0001

0V00000 0000 0000

01111 1111 1111

10000 0000 0000

DAC CONTENTS

MSB LSB

10000 0000 0001

11111 1111 1111

ANALOG OUTPUT

8191

8192

REF













4097

8192

REF













4095

8192

REF













8192

REF













4096

8192

REF













1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20

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