Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - analogue switches SO 16

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 electrostatic dis-

charge (ESD) tolerance of 2000V (min) 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 four normally

closed switches and the DG445 has four normally open

switches. Switching times are less than 250ns for t

and less than 70ns for t

OFF

. Operation is from a single

+10V to +30V supply, or bipolar ±4.5V to ±20V sup-

plies. Maxim’s improved DG444/DG445 continue to be

fabricated with a 44V silicon-gate process.

________________________Applications

New Features

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

♦ Improved R

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 ESD (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

DG444/DG445

Improved, Quad, SPST Analog Switches

________________________________________________________________ Maxim Integrated Products 1

DIP/SO

SWITCHES SHOWN FOR LOGIC "0" INPUT

DG444

LOGIC SWITCH

OFF

IN2

V+

V-

IN1

DG444

IN3

IN4

GND

TOP VIEW

IN1

IN2

IN4

IN3

DG444

2V-

1S1

3GND

11 V+

12 S2

10 V

Thin QFN

19-4705; Rev 4; 6/04

Pin Configurations/Functional Diagrams/Truth Tables

Ordering Information continued at end of data sheet.

*Contact factory for dice specifications.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Pin Configurations continued at end of data sheet.

Sample-and-Hold Circuits

Test Equipment

Heads-Up Displays

Guidance and Control

Systems

Military Radios

Communication Systems

Battery-Operated Systems

PBX, PABX

Audio Signal Routing

Modems/Faxes

PART TEMP RANGE PIN-PACKAGE

DG444CJ 0°C to +70°C 16 Plastic DIP

DG444CY 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

Summary of content (10 pages)

PAGE 1
9-4705; Rev 4; 6/04 Improved, Quad, SPST Analog Switches 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 electrostatic discharge (ESD) tolerance of 2000V (min) per Method 3015.7.
PAGE 2
ABSOLUTE MAXIMUM RATINGS (Voltage Referenced to V-) V+........................................................................................44V GND ....................................................................................25V VL ..................................................(GND - 0.3V) to (V+ + 0.3V) Digital Inputs VS, VD (Note 1).......(V- - 2V) to (V+ + 2V) or 30mA (whichever occurs first) Continuous Current (any terminal) ......................................
PAGE 3
Improved, Quad, SPST Analog Switches DG444/DG445 ELECTRICAL CHARACTERISTICS—Dual Supplies (continued) (V+ = 15V, V- = -15V, VL = 5V, GND = 0, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS SWITCH Power-Supply Range Positive Supply Current Negative Supply Current Logic Supply Current Ground Current V+, VI+ I- IL IGND ±4.5 All channels on or off, V+ = 16.5V, V- = -16.
PAGE 4
ELECTRICAL CHARACTERISTICS—Single Supply (V+ = 12V, V- = 0, VL = 5V, GND = 0, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL MIN CONDITIONS TYP (Note 2) MAX UNITS SWITCH Analog Signal Range VANALOG (Note 3) Drain-Source On-Resistance RDS(ON) V+ = 10.8V; VL = 5.
PAGE 5
Improved, Quad, SPST Analog Switches ON-RESISTANCE vs. VD AND BIPOLAR-SUPPLY VOLTAGE V+ = 5V ±5V 125 V+ = 10V 100 DG444/5-5 120 DG444/5-4 150 ON-RESISTANCE vs. VD, BIPOLARSUPPLY VOLTAGE AND TEMPERATURE V+ = 15V, V- = -15V 80 90 75 V+ = 20V 50 rDS(ON) (Ω) rDS(ON) (Ω) ±10V 60 ±15V 30 20 0 0 5 10 15 20 -20 -10 TA = +25°C 40 TA = -55°C ±20V 25 0 TA = +125°C 60 0 10 0 -15 20 -10 10 VD (V) 0 VD (V) ON-RESISTANCE vs.
PAGE 6
DG444/DG445 Improved, Quad, SPST Analog Switches _____________________Pin Description PIN NAME FUNCTION DIP/SO THIN QFN 1, 16, 9, 8 15, 14, 7, 6 IN1–IN4 Logic Control Inputs 2, 15, 10, 7 16, 13, 8, 5 D1–D4 Drain Outputs 3, 14, 11, 6 1, 12, 9 4 S1–S4 Source Outputs Negative-Supply Voltage Input 4 2 V- 5 3 GND 12 10 Ground VL Logic-Supply Voltage Input 13 11 V+ Positive-SupplyVoltage Input—Connected to Substrate — EP PAD Exposed Pad Connect Pad to V+ Applications Informati
PAGE 7
Improved, Quad, SPST Analog Switches VOUT RGEN +5V +15V VL V+ DG444 DG445 D S VOUT IN OFF DG444 ON OFF VGEN CL GND OFF ON V- IN -15V OFF IN VIN = +3V Q = ∆VOUT × CL DG445 DG444/DG445 ∆VOUT Figure 3. Charge Injection 10nF SIGNAL GENERATOR 10dBm +5V +15V SIGNAL GENERATOR VL V+ D 10nF DG444 DG445 RGEN = 50Ω 10dBm D +15V +5V V+ VL DG444 DG445 50Ω S RGEN = 50Ω IN IN 0V or +2.4V IN 0V or +2.4V NETWORK ANALYZER S GND V- NETWORK ANALYZER 10nF RL 0V or +2.
PAGE 8
Improved, Quad, SPST Analog Switches DG444/DG445 Pin Configurations/Functional Diagrams (continued) TOP VIEW IN1 1 16 IN2 D1 2 15 D2 S1 3 14 S2 V- 4 GND 5 S4 6 11 S3 D4 7 10 D3 IN4 8 13 V+ DG445 D1 IN1 IN2 D2 16 15 14 13 S1 1 12 S2 V- 2 11 V+ GND 3 10 VL S4 4 9 S3 12 V L 9 DG445 IN3 5 DIP/SO LOGIC 0 1 D4 DG445 SWITCH 6 7 8 IN4 IN3 D3 Thin QFN OFF ON Ordering Information (continued) PART TEMP RANGE PIN-PACKAGE DG444ETE -40°C to +85°C 16 Thi
PAGE 9
Improved, Quad, SPST Analog Switches PDIPN.EPS _______________________________________________________________________________________ 9 DG444/DG445 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.
PAGE 10
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) QFN THIN.EPS DG444/DG445 Improved, Quad, SPST Analog Switches D2 D MARKING b C L 0.10 M C A B D2/2 D/2 k L XXXXX E/2 E2/2 C L (NE-1) X e E DETAIL A PIN # 1 I.D. E2 PIN # 1 I.D. 0.35x45∞ e (ND-1) X e DETAIL B e L L1 C L C L L L e e 0.10 C A C 0.