Datasheet DG309DY, DG309DK, DG309DJ, DG309CY, DG309CK Datasheet (Maxim Integrated Producs)

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_______________General Description

The DG308A/DG309 are quad, single-pole-single-throw
(SPST) analog switches. The DG308A is normally open
(SPST, NO), while the DG309 is normally closed (SPST,
NC). Both parts feature fast switching speeds and low on­resistance over the analog range. Other features include a
turn-on time under 120ns, a turn-off time under 90ns, and a
channel on-resistance of 60Ω. CMOS inputs provide
reduced input loading and very low leakage currents.

Both parts feature a 44V maximum breakdown voltage rat­ing that allows 30V peak-to-peak switch-off blocking
capacity. The DG308A/DG309 can be used with split sup­plies (±5V to ±20V) or a single positive supply (+5V to
+30V), while retaining CMOS-logic-compatible inputs.

________________________Applications

Sample-and-Hold Circuits
Test Equipment
Communications Systems
PBX, PABX
Guidance and Control Systems
Heads-Up Displays
Military Radios

____________________________Features

♦ 60Ω r

DS(ON)

♦ Single/Bipolar-Supply Operation
♦ CMOS Logic Compatible
♦ Monolithic, Low-Power CMOS Design

DG308A/DG309

Quad, SPST Analog Switches

________________________________________________________________

Maxim Integrated Products

1

DIP/SO

LOGIC DG308A

TRUTH TABLE

0
1

OFF

ON

DG309

ON

OFF

16
15
14
13
12
11
10

9

1
2
3
4
5
6
7
8

IN2
D2
S2
V+ (SUBSTRATE)

V-

S1

D1

IN1

DG308A

DG309

N.C.
S3
D3
IN3

IN4

D4

S4

GND

TOP VIEW

______Pin Configuration/Truth Table

16
15
14
13
12
11
10

9

1
2
3
4
5
6
7
8

DG308A

DG309

VIN ±10V

5k

-15V +15V

**

**

5k

40k

10k 20k

V

OUT

PROGRAMMABLE-GAIN AMPLIFIER

* PINS 1, 8, 9, AND 16 ARE LOGIC-CONTROL INPUTS.

__________Typical Operating Circuit

19-3926; Rev 0; 3/91

PART

DG308ACJ

DG308ACY
DG308ACK 0°C to +70°C

0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

16 Plastic DIP
16 Narrow SO
16 CERDIP

______________Ordering Information

* Contact factory for dice specifications.

** Contact factory for availability and processing to MIL-STD-883.

DG308AC/D 0°C to +70°C Dice*
DG308ADJ
DG308ADY
DG308ADK -40°C to +85°C

-40°C to +85°C

-40°C to +85°C 16 Plastic DIP
16 Narrow SO
16 CERDIP

DG308AAK -55°C to +125°C 16 CERDIP**
DG309CJ
DG309CY
DG309CK 0°C to +70°C

0°C to +70°C

0°C to +70°C 16 Plastic DIP

16 Narrow SO
16 CERDIP

DG309C/D 0°C to +70°C Dice*
DG309DJ
DG309DY
DG309DK -40°C to +85°C

-40°C to +85°C

-40°C to +85°C 16 Plastic DIP
16 Narrow SO
16 CERDIP

DG309AK -55°C to +125°C 16 CERDIP**

DG308A/DG309

Quad, SPST Analog Switches

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V+ = 15V, V- = -15V, TA= T

MIN

to T

MAX

, unless otherwise noted.) (Note 2)

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.

Voltage Referenced to V-

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

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

Digital Inputs V

S

, VD................(V- - 2V) to (V+ + 2V) or 20mA,

whichever occurs first

Current into Any Terminal (except S or D)..........................30mA

Continuous Current (S or D)................................................20mA

Peak Current (S or D)

(pulsed at 1ms, 10% duty cycle max) ............................70mA

Continuous Power Dissipation (TA= +70°C) (Note 1)

Plastic DIP (derate 10.53mW/°C above +70°C)............842mW

Narrow SO (derate 8.70mW/°C above +70°C) .............696mW

CERDIP (derate 10.00mW/°C above +70°C)................800mW

Operating Temperature Ranges

DG308AC_/DG309C_.........................................0°C to +70°C

DG308AD_/DG309D_......................................-40°C to +85°C

DG308AAK/DG309AK...................................-55°C to +125°C

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

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

T

A

= +25°C,

T

MIN

TA= +25°C

TA= +25°C,
T

MAX

TA= +25°C,
T

MAX

TA= T

MAX

TA= T

MAX

TA= +25°C
TA= T

MAX

TA= +25°C

CONDITIONS

µA-1 -0.001 1I

INL

Input Current with
Input Voltage Low

µA-1 0.001 1I

INH

Input Current with
Input Voltage High

60 100

V-15 15V

ANALOG

Analog Signal Range

nA

-100 100

I

S(OFF)

Source-Off
Leakage Current

Ω

95 150

r

DS(ON)

Drain-Source
On-Resistance

-1 0.1 1

-100 100

-1 -0.1 1

UNITS

DG30_AK

MIN TYP MAX

SYMBOLPARAMETER

VIN= 0V

VIN= 15V

VIN= 3.5V (DG308A),
VIN= 11V (DG309),
VS= -14V, VD= 14V

VIN= 11V (DG308A),
VIN= 3.5V (DG309),
IS= 1mA,
VD= 10V or -10V

VIN= 3.5V (DG308A),
VIN= 11V (DG309),
VS= 14V, VD= -14V

TA= T

MAX

TA= +25°C
TA= T

MAX

TA= +25°C

nA

-100 100

I

D(OFF)

Drain-Off
Leakage Current

-1 0.1 1

-100 100

VIN= 3.5V (DG308A),
VIN= 11V (DG309),
VS= -14V, VD= 14V

-1 0.1 1

VIN= 3.5V (DG308A),
VIN= 11V (DG309),
VS= 14V, VD= -14V

TA= T

MAX

TA= +25°C
TA= T

MAX

TA= +25°C

nA

-200 200

I

D(ON)

Drain-On
Leakage Current

-2 0.1 2

-200 200

VIN= 11V (DG308A),
VIN= 3.5V (DG309),
VS= VD= -14V

-2 0.1 2

VIN=11V (DG308A),
VIN= 3.5V (DG309),
VS= VD= +14V

-200 200

-1 0.001 1

-1 0.001 1

-5 0.1 5

-200 200

-5 0.1 5

60 100

-15 15

-100 100

80 125

-5 0.1 5

-100 100

-5 0.1 5

DG30_C/D

MIN TYP MAX

-100 100

-5 0.1 5

-100 100

-5 0.1 5

SWITCH

INPUT

DG308A/DG309

Quad, SPST Analog Switches

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V+ = 15V, V- = -15V, TA= T

MIN

to T

MAX

, unless otherwise noted.) (Note 2)

8

27

Drain-Off
Capacitance

C

D(OFF)

8 pF

Channel-On
Capacitance

C

D(ON) +

C

S(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= T

MAX

-10Charge Injection Q -10 pCCL= 0.01µF, V

GEN

= 0V, R

GEN

= 0Ω

90 150Turn-Off Time t

OFF

90 150 ns

130 200

78

11

Turn-On Time t

ON

130 200 ns

Off Isolation
(Note 3)

OIRR 78 dB

Source-Off
Capacitance

C

S(OFF)

Figure 1

11 pF

VIN= 0V (DG308A), VIN= 15V (DG309),
ZL= 75Ω, VS= 2V

p-p

, f = 500kHz

VIN= 0V (DG308A), VIN= 15V (DG309),
f = 140kHz, VS= 0V

Figure 1

-100 -0.001 100-10 -0.001 10TA= +25°C

100

I+

100

µA

All channels on or off,
VIN= 0V or 15V

TA= T

MAX

-100 0.001 100

Positive Supply
Current

-10 0.001 10TA= +25°C

DG30_C/D

MIN TYP MAX

PARAMETER SYMBOL

DG30_AK

MIN TYP MAX

UNITSCONDITIONS

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 V

D/VS

, VD= output, VS= input to off switch.

50%

OV
V

S

0V

t

ON

t

OFF

0.9V

O

0.9V

O

LOGIC

INPUT IN1

t

r

< 20ns

t

f

< 20ns

SWITCH

INPUT

SWITCH

OUTPUT VO

SWITCH

INPUT

VS = +3V

SWITCH
OUTPUT
V

O

LOGIC
INPUT

D1S1

IN1

+15V 

V+

GND 0VV- 

-15V

R

L



1k

C

L



35pF

V

O

= V

S

R

L

RL + r

DS(ON)

(REPEAT TEST FOR S2, S3, AND S4)

Figure 1. Switching-Time Test Circuit

SUPPLY

DYNAMIC

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

4

___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 [phone]

© 1991 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

DG308A/DG309

Quad, SPST Analog Switches

__________________________________________Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

500

0

0

DRAIN-SOURCE ON-RESISTANCE

vs. DRAIN VOLTAGE & POWER SUPPLIES

400

DG308A309 TOC01

VD (V)

r

DS(ON)

(Ω)

15

200

100

510

300

20

V+ = 5V

V+ = 10V

V+ = 15V

V+ = 20V

TA = +25°C
V- = GND

500

600

700

800

0

POWER-SUPPLY CURRENT 

AND VOLTAGE vs. TEMPERATURE

400

DG308A309 TOC02

TEMPERATURE (°C)

I

SUPPLY

(nA)

200
100

300

-50 12525-25 0 7550 100

V+ = 44V

V+ = 30V

V+ = 5V

V+ = 10V

TA = +25°C
V- = GND

250

0

-15

DRAIN-SOURCE ON-RESISTANCE

vs. DRAIN VOLTAGE & POWER SUPPLIES

200

DG308A309 TOC04

VD (V)

r

DS(ON)

(Ω)

0

100

50

-10 -5

150

51015

V+ = ±5V

V+ = ±10V

V+ = ±12V

V+ = ±15V

TA = +25°C

-30

-12

LEAKAGE CURRENTS vs.

ANALOG VOLTAGE

10

20

DG308A309 TOC03

V

ANALOG

(V)

I

S

, I

D

(pA)

6

-10

-20

-6 0

0

12

TA = +25°C
V

CC

= ±15V

I

S(OFF)

I

D(OFF)

I

D(ON)

_____________________Pin Description

GroundGND5
No Connect. Not internally

connected.

N.C.12

Positive Supply Voltage Input.
Connected to substrate.

V+13

Negative Supply Voltage InputV-4

Source InputS1–S43, 6, 11, 14

PIN

Drain OutputD1–D42, 7, 10, 15

Logic Control InputsIN1–IN41, 8, 9, 16

FUNCTIONNAME

__________Applications Information

The DG308A/DG309 switch positive analog signals while
using a single positive supply, allowing use in applica­tions where only one supply is available. The disadvan­tages of using a single supply are slower switching
speed and increased r

DS(ON)

. The

Power-Supply

Current and Voltage vs. Temperature

graph shows the
typical curve for a single-supply design. As stated in the
Absolute Maximum Ratings, the analog voltage should
not go above or below the supply voltages, which are V+
and 0V in single-supply operation.