Rainbow-electronics MAX3622 Manual do Utilizador descarregar pdf (Página 2)

MAX3622

Low-Jitter, Precision Clock Generator

with Two Outputs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +3.0V to +3.6V, T

= 0°C to +70°C, unless otherwise noted. Typical values are at V

= +3.3V, T

= +25°C, unless otherwise

noted.) (Notes 1, 2)

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

, V

CCA

DDO_A

, V

CCO_B

...............................................-0.3V to +4.0V

Voltage Range at QAC_OE, QB_OE,

RES1, RES2............................................-0.3V to (V

+ 0.3V)

Voltage Range at X_IN Pin ....................................-0.3V to +1.2V

Voltage Range at GNDO_A...................................-0.3V to +0.3V

Voltage Range at X_OUT Pin ......................-0.3V to (V

- 0.6V)

Current into QA_C ............................................................±50mA

Current into QB, QB...........................................................-56mA

Continuous Power Dissipation (T

= +70°C)

16-Pin TSSOP (derate 11.1mW/°C above +70°C) .......889mW

Operating Junction Temperature Range...........-55°C to +150°C

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Power-Supply Current I

(Note 3) 70 90 mA

CONTROL INPUT CHARACTERISTICS (QAC_OE, QB_OE PINS)

Input Capacitance C

2 pF

Input Logic Bias Resistor R

BIAS

50 k

LVPECL OUTPUT SPECIFICATIONS (QB, QB PINS)

Output High Voltage V

1.13

0.98

0.83

Output Low Voltage V

1.85

1.7

1.55

Peak-to-Peak Output-Voltage

Swing (Single-Ended)

0.6 0.72 0.9 V

P-P

Output Rise/Fall Time 20% to 80% 200 350 600 ps

Output Duty-Cycle Distortion 48 50 52 %

LVCMOS/LVTTL INPUT SPECIFICATIONS (QAC_OE, QB_OE PINS)

Input-Voltage High V

2.0 V

Input-Voltage Low V

0.8 V

Input High Current I

= V

80 μA

Input Low Current I

= 0V -80 μA

LVCMOS OUTPUT SPECIFICATIONS (QA_C PIN)

Output High Voltage V

QA_C sourcing 12mA 2.6 V

Output Low Voltage V

QA_C sinking 12mA 0.4 V

Output Rise/Fall Time (Note 4) 250 500 1000 ps

Output Duty-Cycle Distortion (Note 4) 42 50 58 %

Output Impedance 14 

1 2 3 4 5 6 7 8 9

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