MAX4670 Просмотр технического описания (PDF) - Maxim Integrated

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MAX4670

Integrated T1/E1/J1 Short-Haul and Long-Haul Protection Switch

Maxim Integrated 

Integrated T1/E1/J1 Short-Haul and

Long-Haul Protection Switch

Test Circuits/Timing Diagrams (continued)

+3V 0.1µF

0 OR V+ IN_

V+

VIN

NO_

NC_ MAX4670

VOUT

50Ω

COM_

GND

NETWORK

ANALYZER

50Ω

50Ω

MEAS

50Ω

REF

50Ω

OFF-ISOLATION = 20log VOUT

VIN

ON-LOSS = 20log VOUT

VIN

CROSSTALK

=

20log

VOUT

VIN

MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.

OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.

ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_TERMINAL ON EACH SWITCH.

CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS.

SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.

Figure 5. On-Loss, Off-Isolation, and Crosstalk

0.1µF V+

CAPACITANCE

METER

f = 1MHz

V+

COM_

MAX4670

NC_ OR

NO_

GND

IN_

VINL

OR

VINH

Figure 6. Channel Off-/On-Capacitance

12 ______________________________________________________________________________________

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