Rainbow-electronics MAX1425 Manual de usuario descargar pdf (Pagina 14)

MAX1425

10-Bit, 20Msps ADC

14 ______________________________________________________________________________________

Bypassing and Board Layout

The MAX1425 requires high-speed board layout design

techniques. Locate all bypass capacitors as close to

the device as possible, using surface-mount devices

for minimum inductance. Bypass all analog voltages

(AV

, REFIN, REFP, REFN, and CML) to AGND.

Bypass the digital supply (DV

) to DGND. Multilayer

boards with separated ground and power planes pro-

duce the highest level of signal integrity. Route high-

speed digital signal traces away from sensitive analog

traces. Matching impedance, especially for the input

clock generator, may reduce reflections, thus providing

less jitter in the system. For optimum results, use low-

distortion complementary components such as the

MAX4108.

Figure 8. Using a Transformer for AC-Coupling

Figure 9. Single-Ended AC-Coupled Input Signal

MAX1425

N.C.

IN1

22pF

0.1µF

100Ω

25Ω

MINICIRCUITS

KKB1

INP

CML

MAX1425

0.1µF

100Ω

50Ω

±2V

100Ω

22pF

INP

INN

0.1µF

50Ω

±V

MAX4108

TRANSISTOR COUNT: 5305

Chip Information

1 2 ... 9 10 11 12 13 14 15 16

10-Bit, 20Msps ADC 1

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Rainbow-electronics MAX1425 Manual de usuario Pagina 14

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