LTC2947 datasheet(8/30 Pages) LINER

8 / 30 page

dc2334af

DEMO MANUAL DC2334A

ALTERNATIVE CONNECTION

TO TURRETS E1, E18

OSCILLATOR

HARDWARE SETUP

PCB LAYOUT

External Oscillator

An external oscillator may be connected to J1 or turrets

E1 (EXTCLK), E18 (GND). The maximum low level voltage

is 0.4V and the minimum high level voltage is 2V. The

maximum recommended operating voltage is 5V and is

independent from any of the supply pins.

Figure 9. DC2334A in External Clock Operation

Figure 10. LTC2947 in External Clock Operation

PCB LAYOUT VS PERFORMANCE

TogetthebestperformanceoutofLTC2947,itisimportant

to follow some layout rules, which were mostly followed

on this demo circuit. At some point, a trade-off between

flexibleevaluationofdifferentapplicationscenariosandthe

best possible layout and compact PCB at reasonable costs

had to be done. For this reason, the present demo circuit

does not claim to have the perfect one-and-only layout

but one that is reasonable for evaluation and showcasing

the LTC2947’s high performance.

For general layout considerations, please consult the data

sheet of the LTC2947.

GND

LTC2947

CLKI

dc2334a F10

0.1MHz TO 25MHz

LOW: 0V TO 0.4V

HIGH: 2V TO 2.5V

LTC2947 Datasheet(PDF) 8 Page - Linear Technology