Rainbow-electronics MAX5153 Manual de usuario descargar pdf (Pagina 14)

MAX5152/MAX5153

Using an AC Reference

In applications where the reference has an AC signal

component, the MAX5152/MAX5153 have multiplying

capabilities within the reference input voltage range

specifications. Figure 12 shows a technique for apply-

ing a sinusoidal input to the reference input to REF_,

where the AC signal is offset before being applied to

the reference input.

Harmonic Distortion and Noise

The total harmonic distortion plus noise (THD+N) is typ-

ically less than -80dB at full scale with a 1Vp-p input

swing at 5kHz. The typical -3dB frequency is 600kHz

for both devices, as shown in the

Typical Operating

Characteristics

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

with Configurable Outputs

14 ______________________________________________________________________________________

MAX5152

MAX5153

DAC

OUT

(

+ R1

) (

)(

REF_

)

R2 8192

REF_

OUT

FB_

OUT_

AGNDDGND

+5V/+3V

Figure 10. Configurable Output Gain

AGNDDGND

MAX5152

MAX5153

DAC _

REF_

OUT_

FB_

10k 10k

V-

V+

OUT

+5V/+3V

Figure 11. Bipolar Output Circuit

DAC_

OUT_

FB_

MAX5152

MAX5153

10k

26k

REF_

DGND AGND

+5V/

+3V

REFERENCE

INPUT

500mVp-p

MAX495

+5V/+3V

Figure 12. AC Reference Input Circuit

Table 3. Bipolar Code Table

00000 0000 0001

00000 0000 0000

01111 1111 1111

0V10000 0000 0000

DAC CONTENTS

MSB LSB

10000 0000 0001

11111 1111 1111

ANALOG OUTPUT

4095

4096

REF













4096

REF













-V

4096

REF













-V

4095

4096

REF













-V

4096

- V

REF REF













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

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Rainbow-electronics MAX5153 Manual de usuario Pagina 14

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