MAX385CSLASHD datasheet(9/12 Pages) MAXIM

9 / 12 page

Precision, Low-Voltage Analog Switches

_______________________________________________________________________________________

VGEN

GND

1.0nF

VOUT

-5V

V-

V+

RGEN

VOUT

OFF

∆VOUT

Q = (

∆VOUT) (CL)

+5V

COM

NC or NO

MAX381

MAX383

MAX385

Figure 4. Charge-Injection Test Circuit

50%

tOFF

tr < 20ns

tf < 20ns

VOUT

tON

0.9 x VOUT

+3V

LOGIC

INPUT

SWITCH

OUTPUT

LOGIC INPUT WAVEFORM IS INVERTED FOR

SWITCHES THAT HAVE THE OPPOSITE LOGIC

SENSE CONTROL.

+5V

VOUT

RL = 1000Ω

CL = 35pF

-5V

REPEAT TEST FOR EACH SWITCH

GND

LOGIC

INPUT

VCOM = +3V (for tON)

VCOM = -3V (for tOFF)

FOR LOAD CONDITIONS, SEE

Electrical Characteristics.

CL INCLUDES FIXTURE AND STRAY CAPACITANCE.

VOUT = VCOM

RL + RON

V+

V-

COM

NC or NO

(

)

MAX381

MAX383

MAX385

50%

VOUT1

VOUT2

0.9 x VOUT

+3V

LOGIC

INPUT

SWITCH

OUTPUT 1

SWITCH

OUTPUT 2

+5V

V+

V-

-5V

CL INCLUDES FIXTURE AND STRAY CAPACITANCE.

LOGIC 0 INPUT

GND

LOGIC

INPUT

0.9 x VOUT

RL2

CL2

VOUT2

RL1

VOUT1

CL1

RL = 1000Ω

CL = 35pF

COM

MAX383

VCOM = +3V

Figure 2. Switching-Time Test Circuit

Figure 3. Break-Before-Make Test Circuit (MAX383 only)

______________________________________________Test Circuits/Timing Diagrams

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