LTC6909HMS(RevA) データシートの表示（PDF） - Linear Technology

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LTC6909HMS
(Rev.:RevA)

1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation

Linear Technology 

Typical Performance Characteristics

LTC6909

Supply Current vs Temperature

700

650

V+ = 5V

600

550

500

V+ = 2.7V

450

400

–40 –20

RSET = 100k

PH = 3

CLOAD = 5pF

SSFM DISABLED

0 20 40 60 80 100 120

TEMPERATURE (°C)

6909 G07

Typical Output Resistance

vs Supply Voltage

110

100

90

80

70

60

50

40

30

20

2.8 3 3.2 3.4 3.6 3.8 4 4.2 4.4 4.6 4.8 5

SUPPLY VOLTAGE (V)

6909 G08

Output Rise/Fall Time

vs Supply Voltage

4.5 CLOAD = 5pF

4.0 TA = 25°C

RLOAD = 5k

3.5

3.0

2.5 RISE TIME

2.0

FALL TIME

1.5

1.0

0.5

0

2.7 3.2 3.7 4.2 4.7

SUPPLY VOLTAGE (V)

5.2

6909 G09

Jitter vs RSET

1.2

1.0 V+ = 5V, DIV = 3

0.8

0.6

CLOAD = 5pF

V+ = 2.7V, DIV = 3

0.4

0.2

0

10k

V+ = 5V, DIV = 8

V+ = 2.7V, DIV = 8

100k

1M

RSET (Ω)

10M

6909 G10

Output Operating at 3.33MHz

500mV/DIV

V+ = 3.3V

CLOAD = 15pF

RLOAD = 5k

50ns/DIV

6909 G11

Output Operating at 6.66MHz

1V/DIV

Output Frequency Spectrum

SSFM Enable and Disabled

0 RES BW = 9kHz

SSFM ENABLED

(N = 16)

V+ = 5V

CLOAD = 15pF

RLOAD = 5k

50ns/DIV

6909 G12

–100

SSFM DISABLED

2.5 MHz

FREQUENCY (200kHz/DIV)

6909 G13

6909fa

5

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