High-Precision Clock Generators

with Integrated VCXO

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3

DC ELECTRICAL CHARACTERISTICS (continued)

(VDDA = VDD = VDDQ = 2.4V to 3.6V, and VDDQ = 1.4V to 1.6V for MAX9451, TA = -40°C to +85°C. Typical values at VDDA = VDD =

VDDQ = 3.3V, and VDDQ = 1.5V for MAX9451, TA = +25°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Offset Voltage

VOS

1.05

1.2

1.35

V

Change in VOS Between

Complementary Output States

ΔVOS

10

35

mV

Output Short-Circuit Current

IOS

Two output pins connected to GND

-7.5

-15

mA

SERIAL INTERFACE INPUT, OUTPUT (SCL, SDA,

CS)

Input High Level

VIH

0.7

x VDD

V

Input Low Level

VIL

0.3

x VDD

V

Input Leakage Current

IIL

-1

+1

µA

Output Low Level

VOL

3mA sink current

0.4

V

Input Capacitance

CI

10

pF

POWER CONSUMPTION

MAX9450

55

85

MAX9451

70

94

VDD and VDDA Supply Current

ICC1

Output clock

frequency =

155MHz

MAX9452

65

88

mA

MAX9450

55

80

MAX9451

65

80

VDDQ Supply Current

ICC2

Output clock

frequency =

155MHz (MAX9450)

MAX9452

14

25

mA

AC ELECTRICAL CHARACTERISTICS

(VDDA = VDD = VDDQ = 2.4V to 3.6V, and VDDQ = 1.4V to 1.6V for MAX9451, TA = -40°C to +85°C. |VID| = 200mV, VCOM = |VID / 2| to

2.4 - |VID / 2|. Typical values at VDDA = VDD = VDDQ = 3.3V and VDDQ = 1.5V for MAX9451, TA = +25°C. CL = 10pF, clock output =

155.5MHz and clock input = 19.44MHz, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

CLK OUTPUTS (CLK0, CLK1)

Reference Input Frequency

fIN

Measured at IN0 or IN1

0.008

500

MHz

Output Frequency

fOUT

Measured at CLK0 or CLK1

15

160

MHz

VCXO Pulling Range

CL = 8pF (Note 2)

±60

ppm

Skew between CLK0 and CLK1

(MAX9450 and MAX9452)

50

90

Output-to-Output Skew

tSKO

Skew between CLK0 and CLK1 (MAX9451)

55

106

ps

Rise Time

tR

20% to 80% of output swing

0.4

0.590

ns

Fall Time

tF

80% to 20% of output swing

0.4

0.590

ns

Duty Cycle

43

56

%

Period Jitter (RMS)

TJ

Measured at the band 12kHz to 20MHz

0.8

ps

1kHz offset

-70

10kHz offset

-110

100kHz offset

-130

Phase Noise

1MHz offset

-140

dBc