MAXIM DG308ACJ

19-3926; Rev 0; 3/91
Quad, SPST Analog Switches
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 rDS(ON)
♦ Single/Bipolar-Supply Operation
♦ CMOS Logic Compatible
♦ Monolithic, Low-Power CMOS Design
______________Ordering Information
PART
DG308ACY
DG308ACK
DG308AC/D
DG308ADJ
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
16 Narrow SO
16 CERDIP
Dice*
16 Plastic DIP
DG308ADY
DG308ADK
DG308AAK
DG309CJ
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
0°C to +70°C
16 Narrow SO
16 CERDIP
16 CERDIP**
16 Plastic DIP
DG309CY
DG309CK
DG309C/D
DG309DJ
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
16 Narrow SO
16 CERDIP
Dice*
16 Plastic DIP
DG309DY
DG309DK
DG309AK
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
16 Narrow SO
16 CERDIP
16 CERDIP**
______Pin Configuration/Truth Table
TOP VIEW
5k
* 1
16 *
2
3
-15V 4
10k
VOUT
13 +15V
12
6
11
7
10
IN1 1
16
IN2
D1 2
15
D2
14
S2
V- 4
13
V+ (SUBSTRATE)
GND 5
12
N.C.
S4 6
11
S3
D4 7
10
D3
IN4 8
9
IN3
S1 3
14
5
* 8
40k
5k
15
DG308A
DG309
PIN-PACKAGE
16 Plastic DIP
* Contact factory for dice specifications.
** Contact factory for availability and processing to MIL-STD-883.
__________Typical Operating Circuit
VIN ±10V
TEMP. RANGE
0°C to +70°C
DG308ACJ
20k
9 *
PROGRAMMABLE-GAIN AMPLIFIER
DG308A
DG309
DIP/SO
LOGIC
0
1
TRUTH TABLE
DG308A
OFF
ON
DG309
ON
OFF
* PINS 1, 8, 9, AND 16 ARE LOGIC-CONTROL INPUTS.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
DG308A/DG309
_______________General Description
DG308A/DG309
Quad, SPST Analog Switches
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+ ....................................................................................+44V
GND .................................................................................+25V
Digital Inputs VS, 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
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.
ELECTRICAL CHARACTERISTICS
(V+ = 15V, V- = -15V, TA = TMIN to TMAX, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
DG30_AK
MIN TYP MAX
DG30_C/D
MIN TYP MAX
-15
-15
UNITS
SWITCH
Analog Signal Range VANALOG
Drain-Source
On-Resistance
Source-Off
Leakage Current
Drain-Off
Leakage Current
Drain-On
Leakage Current
rDS(ON)
IS(OFF)
ID(OFF)
ID(ON)
TA = +25°C
15
15
VIN = 11V (DG308A),
VIN = 3.5V (DG309),
IS = 1mA,
VD = 10V or -10V
TA = +25°C,
TMIN
60
100
60
100
TA = TMAX
95
150
80
125
VIN = 3.5V (DG308A),
VIN = 11V (DG309),
VS = 14V, VD = -14V
TA = +25°C
-1
TA = TMAX
-100
VIN = 3.5V (DG308A),
VIN = 11V (DG309),
VS = -14V, VD = 14V
TA = +25°C
-1
TA = TMAX
-100
VIN = 3.5V (DG308A),
VIN = 11V (DG309),
VS = 14V, VD = -14V
TA = +25°C
-1
TA = TMAX
-100
VIN = 3.5V (DG308A),
VIN = 11V (DG309),
VS = -14V, VD = 14V
TA = +25°C
-1
TA = TMAX
-100
VIN =11V (DG308A),
VIN = 3.5V (DG309),
VS = VD = +14V
TA = +25°C
-2
TA = TMAX
-200
VIN = 11V (DG308A),
VIN = 3.5V (DG309),
VS = VD = -14V
TA = +25°C
-2
TA = TMAX
-200
V
Ω
0.1
1
-5
100
-100
1
-5
100
-100
1
-5
100
-100
1
-5
100
-100
2
-5
200
-200
2
-5
200
-200
0.1
5
100
nA
-0.1
0.1
0.1
5
100
0.1
5
100
nA
0.1
0.1
0.1
5
100
0.1
5
200
nA
0.1
0.1
5
200
INPUT
Input Current with
Input Voltage High
IINH
VIN = 15V
TA = +25°C,
TMAX
-1
0.001
1
-1
0.001
1
µA
Input Current with
Input Voltage Low
IINL
VIN = 0V
TA = +25°C,
TMAX
-1
-0.001
1
-1
0.001
1
µA
2
_______________________________________________________________________________________
Quad, SPST Analog Switches
(V+ = 15V, V- = -15V, TA = TMIN to TMAX, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
DG30_AK
MIN TYP MAX
DG30_C/D
MIN TYP MAX
-10
-100 0.001
UNITS
SUPPLY
TA = +25°C
0.001
Positive Supply
Current
I+
All channels on or off,
VIN = 0V or 15V
TA = TMAX
Negative Supply
Current
I-
All channels on or off,
VIN = 0V or 15V
TA = +25°C
-10 -0.001
TA = TMAX
-100
10
100
100
100
10
-100 -0.001 100
µA
µA
-100
DYNAMIC
Turn-On Time
tON
Figure 1
130
200
130
200
Turn-Off Time
tOFF
Figure 1
90
150
90
150
CL = 0.01µF, VGEN = 0V, RGEN = 0Ω
-10
-10
pC
Charge Injection
Q
ns
ns
Off Isolation
(Note 3)
OIRR
VIN = 0V (DG308A), VIN = 15V (DG309),
ZL = 75Ω, VS = 2Vp-p, f = 500kHz
78
78
dB
Source-Off
Capacitance
CS(OFF)
VIN = 0V (DG308A), VIN = 15V (DG309),
f = 140kHz, VS = 0V
11
11
pF
Drain-Off
Capacitance
CD(OFF)
VIN = 0V (DG308A), VIN = 15V (DG309),
f = 140kHz, VS = 0V
8
8
pF
Channel-On
Capacitance
CD(ON) + VIN = 0V (DG308A), VIN = 15V (DG309),
CS(ON) VD = VS = 0V
27
27
pF
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.
+15V
V+
LOGIC
INPUT IN1
SWITCH
INPUT
VS = +3V
50%
tr < 20ns
tf < 20ns OV
SWITCH
INPUT VS
tOFF
0.9VO
SWITCH
OUTPUT VO 0V
tON
0.9VO
S1
D1
IN1
RL
1k
SWITCH
OUTPUT
VO
CL
35pF
LOGIC
INPUT
GND
0V
V-15V
(REPEAT TEST FOR S2, S3, AND S4)
RL
VO = VS
RL + r DS(ON)
Figure 1. Switching-Time Test Circuit
_______________________________________________________________________________________
3
DG308A/DG309
ELECTRICAL CHARACTERISTICS (continued)
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
TA = +25°C
V- = GND
V+ = 5V
300
V+ = 10V
200
TA = +25°C
200
rDS(ON) (Ω)
400
rDS(ON) (Ω)
250
DG308A309 TOC01
500
V+ = ±5V
DG308A309 TOC04
DRAIN-SOURCE ON-RESISTANCE
vs. DRAIN VOLTAGE & POWER SUPPLIES
DRAIN-SOURCE ON-RESISTANCE
vs. DRAIN VOLTAGE & POWER SUPPLIES
150
V+ = ±10V
100
V+ = 15V
50
100
V+ = ±12V
V+ = 20V
V+ = ±15V
0
0
15
10
-10
0
-5
5
10
VD (V)
VD (V)
POWER-SUPPLY CURRENT
AND VOLTAGE vs. TEMPERATURE
LEAKAGE CURRENTS vs.
ANALOG VOLTAGE
TA = +25°C
V- = GND
700
-15
20
V+ = 44V
600
400
V+ = 30V
15
TA = +25°C
VCC = ±15V
10
IS, ID (pA)
500
300
20
DG308A309 TOC02
800
5
DG308A309 TOC03
0
ISUPPLY (nA)
DG308A/DG309
Quad, SPST Analog Switches
IS(OFF)
0
ID(OFF)
-10
ID(ON)
V+ = 10V
200
-20
V+ = 5V
100
-30
0
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
_____________________Pin Description
PIN
NAME
1, 8, 9, 16
IN1–IN4
Logic Control Inputs
2, 7, 10, 15
D1–D4
Drain Output
3, 6, 11, 14
S1–S4
Source Input
4
V-
5
GND
12
N.C.
13
V+
FUNCTION
Negative Supply Voltage Input
Ground
No Connect. Not internally
connected.
Positive Supply Voltage Input.
Connected to substrate.
-12
-6
0
6
12
VANALOG (V)
__________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.
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 (408) 737-7600
© 1991 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.