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DG408DY+中文资料

General Description

Maxim’s redesigned DG408 and DG409 CMOS analog multiplexers now feature guaranteed matching between channels (8?max) and flatness over the specified sig-nal range (9?max). These low on-resistance muxes (100?max) conduct equally well in either direction and feature guaranteed low charge injection (15pC max). In addition, these new muxes offer low input off-leakage current over temperature—less than 5nA at +85°C. The DG408 is a 1-of-8 multiplexer/demultiplexer and the DG409 is a dual 4-channel multiplexer/demultiplex-er. Both muxes operate with a +5V to +30V single sup-ply and with ±5V to ±20V dual supplies. ESD protection is guaranteed to be greater than 2000V per Method 3015.7 of MI L-STD-883. These improved muxes are pin-compatible plug-in upgrades for the industry stan-dard DG408 and DG409.

________________________Applications

Sample-and-Hold Circuits Test Equipment

Guidance and Control Systems Communications Systems Data-Acquisition Systems Audio Signal Routing

____________________________Features

o Pin-Compatible Plug-In Upgrades for Industry Standard DG408/DG409

o Guaranteed Matching Between Channels, 8?Max o Guaranteed On-Resistance Flatness, 9?Max o Guaranteed Low Charge Injection, 15pC Max o Low On-Resistance, 100?Max o Input Leakage, 5nA Max at +85°C

o Low Power Consumption, 1.25mW Max o Rail-to-Rail Signal Handling

o Digital Input Controls TTL/CMOS Compatible o ESD Protection >2000V per Method 3015.7

DG408/DG409

Improved, 8-Channel/Dual 4-Channel,

CMOS Analog Multiplexers

________________________________________________________________Maxim Integrated Products 1

Ordering Information

_________________Pin Configurations

_______________Functional Diagrams

19-4725; Rev 3; 8/02

*Contact factory for dice specifications.**Contact factory for availability.

For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at https://www.wendangku.net/doc/2f14678665.html,.

D G 408/D G 409

Improved, 8-Channel/Dual 4-Channel,CMOS Analog Multiplexers 2_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS —Dual Supplies

(V+ = 15V, V- = -15V, GND = 0V, V AH = +2.4V, V AL = +0.8V, T A = 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.

Voltage Referenced to V-V+............................................................................-0.3V, 44V GND.........................................................................-0.3V, 25V Digital Inputs, S, D (Note 1)....................(V- - 2V) to (V+ + 2V) or

30mA, (whichever occurs first)

Continuous Current (any terminal)......................................30mA Peak Current, S, D

(pulsed at 1ms, 10% duty cycle max)..........................100mA

Continuous Power Dissipation (T A = +70°C)

TSSOP (derate 9.4mW/°C above +70°C)....................755mW Plastic DIP (derate 10.53mW/°C above +70°C)..........842mW TSSOP (derate 9.4mW/°C above +70°C)....................755mW Narrow SO (derate 8.70mW/°C above +70°C)............696mW CERDIP (derate 10.00mW/°C above +70°C)...............800mW Operating Temperature Ranges

DG408/DG409C_................................................0°C to +70°C DG408/DG409D,E_.........................................-40°C to +85°C DG408/DG409AK..........................................-55°C to +125°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°C

Note 1:Signals on S_, D_, EN, A0, A1, or A2 exceeding V+ or V- are clamped by internal diodes. Limit forward current to

maximum current ratings.

DG408/DG409

Improved, 8-Channel/Dual 4-Channel,

CMOS Analog Multiplexers

_______________________________________________________________________________________3

ELECTRICAL CHARACTERISTICS —Dual Supplies (continued)

(V+ = 15V, V- = -15V, GND = 0V, V AH = +2.4V, V AL = +0.8V, T A = T MIN to T MAX , unless otherwise noted.)

D G 408/D G 409

Improved, 8-Channel/Dual 4-Channel,CMOS Analog Multiplexers 4_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS —Single Supply

(V+ = 12V, V- = 0V, GND = 0V, V AH = +2.4V, V AL = +0.8V, T A = T MIN to T MAX , unless otherwise noted.)

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:Guaranteed by design.

Note 4:?R ON = R ON(MAX)- R ON(MIN).On-resistance match between channels and flatness are guaranteed only with specified

voltages. Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured at the extremes of the specified analog signal range.

Note 5:Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25°C.Note 6:Off isolation = 20log V D /V S , where V D = output and V S = input to off switch.

DG408/DG409

Improved, 8-Channel/Dual 4-Channel,

CMOS Analog Multiplexers

_______________________________________________________________________________________5

120140

160ON-RESISTANCE vs. V D (DUAL SUPPLIES)

100

0204060-20

20-1515-10

-5

080V D (V)

r D S (O N ) (?)

120ON-RESISTANCE vs. V D AND

TEMPERATURE (DUAL SUPPLIES)

1000

204060-1515

-1010-55080V D (V)

r D S (O N ) (?)

280320

360

400

ON-RESISTANCE vs. V D (SINGLE SUPPLY)

24040

8012016015

105

200V D (V)

r D S (O N ) (?)

120140160ON-RESISTANCE vs. V D AND TEMPERATURE (SINGLE SUPPLY)

100

020406015

105

80V D (V)

r D S (O N ) (?)

30CHARGE INJECTION vs. V D

20-30-20-100-15

-10

-5

010V D (V)

Q j (p C )

100.0001

-55125

OFF LEAKAGE vs. TEMPERATURE

TEMPERATURE (°C)

O F F L E A K A G E (n A )

250.010.001-35-15650.1100100045851055100.0001

-55125

ON LEAKAGE vs. TEMPERATURE

1TEMPERATURE (°C)

O N L E A K A G E (n A )

250.01

0.001

-35-15

0.11001000

851055

100

0.001

-55125

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (°C)

I +, I - (μA )

250.1

0.01

-35-15

851055

__________________________________________Typical Operating Characteristics

(T A = +25°C, unless otherwise noted.)

__________Applications Information

Operation with

Supply Voltages Other than 15V

Using supply voltages less than ±15V reduces the ana-log signal range. The DG408/DG409 switches operate with ±5V to ±20V bipolar supplies or with a +5V to +40V single supply. Connect V- to GND when operat-ing with a single supply. Both device types can also operate with unbalanced supplies, such as +24V and -5V. The Typica l Opera ting Cha ra cteristics graphs show typical on-resistance with 20V, 15V, 10V, and 5V supplies. (Switching times increase by a factor of two or more for operation at 5V.)

Overvoltage Protection

Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maxi-mum ratings, because stresses beyond the listed rat-ings may cause permanent damage to the devices.Always sequence V+ on first, then V-, followed by the logic inputs, S or D. If power-supply sequencing is not possible, add two small signal diodes in series with supply pins for overvoltage protection (Figure 1).Adding diodes reduces the analog signal range to 1V below V+ and 1V above V-, but does not affect the devices’ low switch resistance and low leakage charac-teristics. Device operation is unchanged, and the differ-ence between V+ and V- should not exceed +44V.

D G 408/D G 409

Improved, 8-Channel/Dual 4-Channel,CMOS Analog Multiplexers 6

_______________________________________________________________________________________

______________________________________________________________Pin Description

Figure 1. Overvoltage Protection Using External Blocking Diodes

DG408DG409NAME FUNCTION

1, 15, 16A0, A2, A1Address Inputs ——A0, A1Address Inputs 22EN Enable Input

33V-Negative Supply Voltage Input 4–7—S1–S4Bidirectional Analog Inputs —4–7S1A–S4A

Bidirectional Analog Inputs 8—D Bidirectional Analog Output —8, 9DA, DB Bidirectional Analog Outputs 9–12—S8–S5Bidirectional Analog Inputs —10–13S4B–S1B Bidirectional Analog Inputs 1314V+Positive Supply Voltage Input 14

GND

Ground

1, 16

DG408/DG409

Improved, 8-Channel/Dual 4-Channel,

CMOS Analog Multiplexers

_______________________________________________________________________________________

______________________________________________Test Circuits/Timing Diagrams

Figure 2. Transition Time

D G 408/D G 409

Improved, 8-Channel/Dual 4-Channel,CMOS Analog Multiplexers 8_______________________________________________________________________________________

_________________________________Test Circuits/Timing Diagrams (continued)

Figure 5. Charge Injection

DG408/DG409

Improved, 8-Channel/Dual 4-Channel,

CMOS Analog Multiplexers

_______________________________________________________________________________________9

_________________________________Test Circuits/Timing Diagrams (continued)

Figure 6. Off-Isolation Figure 7. Crosstalk

Figure 8. Source/Drain Capacitance

D G 408/D G 409

Improved, 8-Channel/Dual 4-Channel,CMOS Analog Multiplexers 10______________________________________________________________________________________

Pin Configurations/Functional Diagrams/Truth Tables (continued)

DG408/DG409

Improved, 8-Channel/Dual 4-Channel,

CMOS Analog Multiplexers

______________________________________________________________________________________11

Ordering Information (continued)

**Contact factory for availability.

Package Information

For the latest package outline information, go to https://www.wendangku.net/doc/2f14678665.html,/packages .

D G 408/D G 409

Improved, 8-Channel/Dual 4-Channel,CMOS Analog Multiplexers __________________________________________________________Chip Topographies

S40.080"(2.03mm)D S8S7S4A 0.080"(2.03mm)

DA DB S4B

TRANSISTOR COUNT: 122SUBSTRATE CONNECTED TO V+

DG408

DG409

N.C. = NO INTERNAL CONNECTION

Ma xim ca nnot a ssume responsibility for use of a ny circuitry other tha n circuitry entirely embodied in a Ma xim product. No circuit pa tent licenses a re implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

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Printed USA

is a registered trademark of Maxim Integrated Products.