Rainbow-electronics MAX106 Manual do Utilizador descarregar pdf (Página 26)

MAX106

±5V, 600Msps, 8-Bit ADC with On-Chip

2.2GHz Bandwidth Track/Hold Amplifier

26 ______________________________________________________________________________________

All supplies should be decoupled with large tantalum or

electrolytic capacitors at the point they enter the PCB.

For best performance, bypass all power supplies to the

appropriate ground with a 10µF tantalum capacitor 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 MAX106 device, to filter

very high-frequency noise.

Static Parameter Definitions

Integral Nonlinearity

Integral nonlinearity (INL) 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 linearity parameters for the MAX106 are mea-

sured using the best-straight-line fit method.

Differential Nonlinearity

Differential nonlinearity (DNL) 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.

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 MAX106 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. MAX106 Bypassing and Grounding

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

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