MAX4633CPE Просмотр технического описания (PDF) - Maxim Integrated

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MAX4633CPE

Fault-Protected, High-Voltage, Dual Analog Switches

Maxim Integrated 

Fault-Protected, High-Voltage,

Dual Analog Switches

High-Frequency Performance

In 50Ω systems, signal response is reasonably flat up

to 30MHz (see Typical Operating Characteristics).

Above 30MHz, the on-response has several minor

peaks that are highly layout dependent. The problem

with high-frequency operation is not turning the switch

on, but turning it off. The off-state switch acts like a

capacitor and passes higher frequencies with less

attenuation. At 10MHz, off-isolation is about -46dB in

50Ω systems, declining (approximately 20dB per

decade) as frequency increases. Higher circuit imped-

ance also diminishes off-isolation. Adjacent channel

attenuation is about 3dB above that of a bare IC socket

and is due entirely to capacitive coupling.

V+

V+

NO_ OR NC_

+10V

MAX4631

MAX4632

VIN_

IN_ MAX4633 COM_

50Ω

GND V-

RL

VOUT

10pF

V-

Test Circuits/Timing Diagrams

V+

VIN_

0V

+10V

VOUT

0V

tOFF

50%

90%

50%

90%

tON

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

Figure 2. Switch Turn-On/Turn-Off Times

V+

VIN_

IN_

IN_

50Ω

V+

NO_

NC_

MAX4631

COM_

COM_

GND V-

V-

+10V

VOUT

RL

10pF

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

Figure 3. MAX4631 Break-Before-Make Interval

V+

VIN_

0V

VNO_, VNC_

VOUT

0V

tR < 5ns

tF < 5ns

50%

50%

80%

tOPEN

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