Rainbow-electronics MAX3673 Bedienungsanleitung PDF herunterladen (Seite 2)

MAX3673

Low-Jitter Frequency Synthesizer

with Selectable Input Reference

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +3.0V to +3.6V, T

= -40°C to +85°C, C

PLL

= 0.1µF, C

REG

= 0.22µF. Typical values are at V

= +3.3V, T

= +25°C, unless

otherwise noted.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Supply Voltage Range (V

, VCC_VCO)..............-0.3V to +4.0V

LVPECL Output Current (OUTA[3:0],

, OUTB[4:0], ) .............................-56mA

All Other Pins..............................................-0.3V to (V

+ 0.3V)

Continuous Power Dissipation (T

= +70°C)

56-Pin TQFN (derate 47.6mW/°C above 70°C)..........3808mW

Operating Junction Temperature (T

)................-55°C to +150°C

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering, 10s) .................................+300°C

OUTB[ : ]40

UTA[ : ]30

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Current I

LVPECL outputs unterminated 120 175 mA

POWER-ON RESET

Rising (Note 1) 2.55 V

Falling (Note 1) 2.45 V

LVCMOS/LVTTL INPUTS (MR, SEL_CLK, PLL_BYPASS, FB_SEL)

Input High Voltage V

2.0 V

Input Low Voltage V

0.8 V

Input High Current I

= V

75 μA

Input Low Current I

= GND -75 μA

LVCMOS/LVTTL OUTPUTS (IN0FAIL, IN1FAIL, LOCK)

Output High Voltage V

= -8mA 2.4 V

Output Low Voltage V

= +8mA 0.4 V

LVPECL INPUTS (REFCLK0, REFCLK0, REFCLK1, REFCLK1, FB_IN, FB_IN) (Note 2)

Input High Voltage V

0.7

Input Low Voltage V

2.0

Input Bias Voltage V

CMI

1.8

1.34

Differential-Input Swing 0.15 1.9 V

P-P

Differential-Input Impedance > 40 k

Common-Mode Input Impedance > 14 k

Input Capacitance 1.5 pF

Input Current V

= V

- 0.7V, V

= V

- 2.0V -100 +100 μA

Input Inrush Current When Power

is Off (Steady State)

(Notes 3, 4) 8 mA

Input Inrush Current Overshoot

When Power is Off

OVERSHOOT

(Notes 3, 4) 6 mA

1 2 3 4 5 6 7 ... 15 16

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