Rainbow-electronics MAX1207 Manual de usuario descargar pdf (Pagina 25)

MAX1207

65Msps, 12-Bit ADC

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Parameter Definitions

Integral Nonlinearity (INL)

Integral nonlinearity is the deviation of the values on an

actual transfer function from a straight line. This straight

line is either a best-straight-line fit or a line drawn

between the end points of the transfer function, once

offset and gain errors have been nullified. The static lin-

earity parameters for the MAX1207 are guaranteed by

design using the best-straight-line fit method.

Differential Nonlinearity (DNL)

Differential nonlinearity is the difference between an

actual step width and the ideal value of 1 LSB. A DNL

error specification of less than 1 LSB guarantees no

missing codes and a monotonic transfer function.

Offset Error

Ideally, the midscale MAX1207 transition occurs at 0.5

LSB above midscale. The offset error is the amount of

deviation between the measured transition point and

the ideal transition point.

16.2kΩ

47Ω

+3.3V

2.048V

REFIN

REFP

REFN

COMREFOUT

GND

1µF

0.1µF

NOTE: ONE FRONT-END REFERENCE CIRCUIT PROVIDES ±15mA OF OUTPUT DRIVE.

* PLACE AS CLOSE TO THE DEVICE AS POSSIBLE.

0.1µF

+3.3V

0.1µF

2.2µF

0.1µF

10µF

2.2µF

MAX6062

MAX1207

REFIN

REFP

REFN

COMREFOUT

GND

0.1µF

2.2µF

0.1µF

*1µF

0.1µF

10µF

2.2µF

MAX1207

10µF

47µF

1.47kΩ

MAX4250

*1µF

Figure 12. External Buffered (MAX4250) Reference Drive Using a MAX6062 Bandgap Reference

1 2 ... 20 21 22 23 24 25 26 27 28 29

65Msps, 12-Bit ADC 1

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Rainbow-electronics MAX1207 Manual de usuario Pagina 25

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