Rainbow-electronics DS1091L Bedienungsanleitung PDF herunterladen (Seite 4)

DS1091L

Automotive Temperature Range

Spread-Spectrum Econoscillator

4 _____________________________________________________________________

Typical Operating Characteristics (continued)

= +25°C, V

= 3.3V, unless otherwise noted.)

Pin Description

µMAX8

NAME FUNCTION

1 OUT Spread-Spectrum Clock Output

Supply Voltage

3 GND Ground

4 SEL1

5 SEL0

Spread Spectrum Dither Magnitude Select Inputs. Selects dither magnitude (see Table 1).

6, 7 N.C. No Connection

8 DR Spread-Spectrum Dither Rate Selector. Selects dither rate (see Table 2).

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

OUTPUT FALL TIME

DS1091L toc07

TIME (ns)

OUTPUT (V)

FALL TIME

= 1.13ns

TYPICAL

AT 12pF LOAD

-35

-30

-25

-20

-15

-10

-5

31.9 32.932.4 33.4 33.9 34.4

34.9

SPECTRUM ATTENUATION vs. FREQUENCY

AT DIFFERENT DITHER AMPLITUDES

DS1091L toc08

FREQUENCY (MHz)

ATTENUATION (dB)

±1%

±2%

±4%

8dB

11dB

14dB

OUT

= 33.3MHz

RBW = 120kHz

CENTER DITHER

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

OUTPUT RISE TIME

DS1091L toc06

TIME (ns)

OUTPUT (V)

RISE TIME

= 1.02ns

TYPICAL

AT 12pF LOAD

1 2 3 4 5 6

Automotive Temperature Range 1

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