Rainbow-electronics MAX104 Manual do Utilizador descarregar pdf (Página 26)

MAX104

All supplies should be decoupled with large tantalum or

electrolytic capacitors at the point where they enter the

PCB. For best performance, bypass all power supplies

to the appropriate ground with a 10µF tantalum capaci-

tor, to filter power-supply noise, in parallel with a 0.01µF

capacitor and a high-quality 47pF ceramic chip capaci-

tor located very close to the MAX104 device, to filter

very high-frequency noise.

Static 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 can be either a best-straight-line fit or a line drawn

between the endpoints of the transfer function, once

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

earity parameters for the MAX104 are measured 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 1LSB. A DNL

error specification of less than 1LSB guarantees no

missing codes and a monotonic transfer function.

±5V, 1Gsps, 8-Bit ADC with

On-Chip 2.2GHz Track/Hold Amplifier

26 ______________________________________________________________________________________

10µF

GNDD

GNDA

GNDI

1N5817

A = +4.75V TO +5.25V

D = +4.75V TO +5.25V

I = +4.75V TO +5.25V

O = +3.0V TO V

= -4.75V TO -5.25V

NOTE:

LOCATE ALL 47pF CAPACITORS AS CLOSE

AS POSSIBLE TO THE MAX104 DEVICE.

GNDD

10nF 10nF 47pF 47pF 47pF 47pF

10µF 10nF 10nF 47pF 47pF 47pF 47pF

10µF 10nF 10nF 47pF 47pF

10µF

10nF 10nF 47pF 47pF 47pF 47pF

10µF 10nF 10nF 47pF 47pF 47pF 47pF

Figure 22. MAX104 Bypassing and Grounding

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 32

±5V, 1Gsps, 8-Bit ADC with 1

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