DG308A datasheet(3/4 Pages) MAXIM

Part #	DG308A

Description	Quad, SPST Analog Switches

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Manufacturer	MAXIM [Maxim Integrated Products]

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Quad, SPST Analog Switches

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(V+ = 15V, V- = -15V, TA = TMIN to TMAX, unless otherwise noted.) (Note 2)

8

27

Drain-Off

Capacitance

CD(OFF)

8

pF

Channel-On

Capacitance

CD(ON) +

CS(ON)

27

pF

VIN = 0V (DG308A), VIN = 15V (DG309),

f = 140kHz, VS = 0V

VIN = 0V (DG308A), VIN = 15V (DG309),

VD = VS = 0V

-100

Negative Supply

Current

I-

-100

µA

All channels on or off,

VIN = 0V or 15V

TA = TMAX

-10

Charge Injection

Q

-10

pC

CL = 0.01µF, VGEN = 0V, RGEN = 0Ω

90

150

Turn-Off Time

tOFF

90

150

ns

130

200

78

11

Turn-On Time

tON

130

200

ns

Off Isolation

(Note 3)

OIRR

78

dB

Source-Off

Capacitance

CS(OFF)

Figure 1

11

pF

VIN = 0V (DG308A), VIN = 15V (DG309),

ZL = 75Ω, VS = 2Vp-p, f = 500kHz

VIN = 0V (DG308A), VIN = 15V (DG309),

f = 140kHz, VS = 0V

Figure 1

-100 -0.001 100

-10

-0.001

10

TA = +25°C

100

I+

100

µA

All channels on or off,

VIN = 0V or 15V

TA = TMAX

-100 0.001

100

Positive Supply

Current

-10

0.001

10

TA = +25°C

DG30_C/D

MIN

TYP

MAX

PARAMETER

SYMBOL

DG30_AK

MIN

TYP

MAX

UNITS

CONDITIONS

Note 1: All leads are soldered or welded to the PC board.

Note 2: The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in

this data sheet.

Note 3: Off isolation = 20log10 VD/VS, VD = output, VS = input to off switch.

50%

OV

VS

0V

tON

tOFF

0.9VO

LOGIC

INPUT IN1

tr < 20ns

tf < 20ns

SWITCH

INPUT

SWITCH

OUTPUT VO

SWITCH

INPUT

VS = +3V

SWITCH

OUTPUT

VO

LOGIC

INPUT

D1

S1

IN1

+15V

V+

GND

0V

V-

-15V

RL

1k

CL

35pF

VO = VS

RL

RL + r DS(ON)

(REPEAT TEST FOR S2, S3, AND S4)

Figure 1. Switching-Time Test Circuit

SUPPLY

DYNAMIC

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