Maxim Integrated Producs DG445DY, DG445DJ, DG445CY, DG445CJ, DG444DY Datasheet

DG444/DG445

Improved, Quad, SPST Analog Switches

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Maxim Integrated Products

1

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_______________General Description

Maxim’s redesigned DG444/DG445 analog switches
now feature on-resistance matching (4Ω max) between
switches and guaranteed on-resistance flatness over
the signal range (9Ω max). These low on-resistance
switches conduct equally well in either direction. They
guarantee low charge injection (10pC max), low power
consumption (35µW max), and an ESD tolerance of
2000V minimum per Method 3015.7. The new design
offers lower off leakage current over temperature (less
than 5nA at +85°C).

The DG444/DG445 are quad, single-pole/single-throw
(SPST) analog switches. The DG444 has 4 normally
closed switches and the DG445 has 4 normally open
switches. Switching times are less than 250ns for t

ON

and less than 70ns for t

OFF

. Operation is from a single
+10V to +30V supply, or bipolar ±4.5V to ±20V sup­plies. Maxim’s improved DG444/DG445 continue to be
fabricated with a 44V silicon-gate process.

________________________Applications

Sample-and-Hold Circuits Communication Systems
Test Equipment Battery-Operated Systems
Heads-Up Displays PBX, PABX
Guidance and Control Systems Audio Signal Routing
Military Radios Modems/Faxes

______________________New Features

♦ Plug-In Upgrades for Industry-Standard DG444/DG445
♦ Improved r

ON

Match Between Channels (4Ω max)

♦ Guaranteed r

FLAT(ON)

Over Signal Range (9Ω max)

♦ Improved Charge Injection (10pC max)
♦ Improved Off Leakage Current Over Temperature

(<5nA at +85°C)

♦ Withstand Electrostatic Discharge (2000V min)

per Method 3015.7

__________________Existing Features

♦ Low r

DS(ON)

(85Ω max)

♦ Single-Supply Operation +10V to +30V

Bipolar-Supply Operation ±4.5V to ±20V

♦ Low Power Consumption (35µW max)
♦ Rail-to-Rail Signal Handling
♦ TTL/CMOS-Logic Compatible

______________Ordering Information

Ordering Information continued at end of data sheet.

* Contact factory for dice specifications.

PART TEMP. RANGE PIN-PACKAGE

DG444CJ

0°C to +70°C 16 Plastic DIP
DG444DY 0°C to +70°C 16 Narrow SO
DG444C/D 0°C to +70°C Dice*
DG444DJ -40°C to +85°C 16 Plastic DIP
DG444DY -40°C to +85°C 16 Narrow SO

16
15
14
13
12
11
10

9

1
2
3
4
5
6
7
8

IN2
D2
S2
V+

V-

S1

D1

IN1

DG445

V

L

S3
D3
IN3

IN4

D4

S4

GND

DIP/SO DIP/SO

DG445

LOGIC SWITCH

0

1

OFF

ON

SWITCHES SHOWN FOR LOGIC "0" INPUT

DG444

LOGIC SWITCH

0
1

ON
OFF

16
15
14
13
12
11
10

9

1
2
3
4
5
6
7
8

IN2
D2
S2
V+

V-

S1

D1

IN1

DG444

V

L

S3
D3

IN3

IN4

D4

S4

GND

TOP VIEW

_____________________Pin Configurations/Functional Diagrams/Truth Tables

19-4705; Rev 1; 4/94

DG444/DG445

Improved, Quad, SPST Analog Switches

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—Dual Supplies

(V+ = 15V, V- = -15V, VL= 5V, GND = 0V, V

INH

= 2.4V, V

INL

= 0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted.)

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.

PARAMETER SYMBOL UNITS

r

FLAT(ON)

15

Ω

9

∆r

DS(ON)

4

100

Ω

-0.50 0.01 0.50

Source Leakage Current
(Note 5)

I

S(OFF)

-5 5

nA

-0.50 0.01 0.50

Drain-Off Leakage Current
(Note 5)

I

D(OFF)

-5 5

nA

Analog Signal Range -15 15 V
Drain-Source

On-Resistance

r

DS(ON)

50 85

-0.50 0.08 0.50

Drain-On Leakage Current
(Note 5)

-10 10

nA

I

INH

-0.5 -0.00001 0.5 µA

I

INL

-0.5 -0.00001 0.5 µA

CONDITIONS

(Note 3)

Voltage Referenced to V-

V+........................................................................................44V

GND ....................................................................................25V

V

L

....................................................(GND -0.3V) to (V+ +0.3V)

Digital Inputs V

S

, VD (Note 1).........(V- -2V) to (V+ +2V) or 30mA

(whichever occurs first)

Continuous Current (any terminal)......................................30mA

Peak Current, S or D (pulsed at 1ms, 10% duty cycle max) .100mA

Continuous Power Dissipation (T

A

= +70°C)
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C) 842mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C)..696mW

Operating Temperature Ranges

DG444C/DG445C................................................0°C to +70°C

DG444D/DG445D.............................................-40°C to +85°C

Storage Temperature Range.............................-65°C to +150°C

Lead Temperature (soldering, 10sec).............................+300°C

V

ANALOG

TA= +25°C

V+ = 13.5V, V- = -13.5V,
VD= ±8.5V,
IS= -10mA

TA= T

MIN

to T

MAX

On-Resistance Match
Between Channels (Note 4)

TA= +25°C

5

Ω

TA= T

MIN

to T

MAX

VD= ±10V,
IS= -10mA

TA= +25°C
TA= T

MIN

to T

MAX

On-Resistance Flatness (Note 4)

VD= ±5V,
IS= -10mA

TA= +25°C
TA= T

MIN

to T

MAX

V+ = 16.5V, V- = -16.5V,
VD= ±15.5V,
VS= 15.5V

I

D(ON)

or

I

S(ON)

Input Current with
Input Voltage High

Input Current with
Input Voltage Low

TA= +25°C
TA= T

MIN

to T

MAX

TA= +25°C
TA= T

MIN

to T

MAX

VIN= 2.4V, all others = 0.8V

VIN= 0.8V, all others = 2.4V

V+ = 16.5V, V- = -16.5V,
VD= ±15.5V,
VS= 15.5V

V+ = 16.5V, V- = -16.5V,
VD= ±15.5V,
VS= ±15.5V

MIN TYP MAX

(Note 2)

SWITCH

INPUT

Note 1: Signals on S, D, or IN exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current rating.

±

±

DG444/DG445

Improved, Quad, SPST Analog Switches

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)

(V+ = 15V, V- = -15V, VL= 5V, GND = 0V, V

INH

= 2.4V, V

INL

= 0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted.)

PARAMETER

TA= +25°C

SYMBOL

MIN TYP MAX

(Note 2)

TA= T

MIN

to T

MAX

UNITS

TA= +25°C

I-

-5 5

µANegative Supply Current

TA= T

MIN

to T

MAX

-1 -0.0001 1

Positive Supply Current I+

-1 0.001 1TA= +25°C

TA= +25°C

-1 0.001 1

Logic Supply Current I

L

-5 5

µA

Turn-On Time VS= ±10V, Figure 2t

ON

-1 -0.0001 1

150 250

Ground Current

ns

I

GND

-5 5

µA

Power-Supply Range V+, V- ±4.5 ±20.0 V

TA= T

MIN

to T

MAX

CONDITIONS

All channels on or off,
V+ = 16.5V, V- = -16.5V,
VIN= 0V or 5V

-5 5

All channels on or off,
V+ = 16.5V, V- = -16.5V,
VIN= 0V or 5V

All channels on or off,
V+ = 16.5V, V- = -16.5V,
VIN= 0V or 5V

µA

TA= T

MIN

to T

MAX

All channels on or off,
V+ = 16.5V, V- = -16.5V,
VIN= 0V or 5V

TA= +25°C
TA= +25°C

Turn-Off Time

DG444, VS= ±10V, Figure 2 90 120 ns

TA= +25°CDG445, VS= ±10V, Figure 2

t

OFF

110 170 ns

TA= +25°C

Off-Isolation Rejection
Ratio (Note 6)

OIRR 60 dB

TA= +25°CCharge Injection (Note 3) Q 510pC

TA= +25°CCrosstalk (Note 7) 100 dB
TA= +25°CSource-Off Capacitance f = 1MHz, Figure 6C

S(OFF)

4 pF

TA= +25°CDrain-Off Capacitance f = 1MHz, Figure 6C

D(OFF)

4 pF

CL= 1nF, V

GEN

= 0V,

R

GEN

= 0Ω, Figure 3

RL= 50Ω, CL= 5pF,
f = 1MHz, Figure 4

RL- 50Ω, CL= 5pF,
f = 1MHz, Figure 5

TA= +25°CSource-On Capacitance f = 1MHz, Figure 7C

S(ON)

16 pF

TA= +25°CDrain-On Capacitance f = 1MHz, Figure 7C

D(ON)

16 pF

SUPPLY

DYNAMIC