ISL84781 Intersil Corporation, ISL84781 Datasheet

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ISL84781

Manufacturer Part Number
ISL84781
Description
8 to 1 Analog Multiplexer
Manufacturer
Intersil Corporation
Datasheet
Ultra Low ON-Resistance, Low-Voltage,
Single Supply, 8 to 1 Analog Multiplexer
The Intersil ISL84781 device contains precision, bidirectional,
analog switches configured as an 8 channel
multiplexer/demultiplexer. It is designed to operate from a
single +1.6V to +3.6V supply. The device has an inhibit pin to
simultaneously open all signal paths.
ON resistance is 0.4Ω with a +3.0V supply and 0.55Ω with a
single +1.8V supply. Each switch can handle rail to rail
analog signals. The off-leakage current is only 4nA max at
+25°C or 40nA max at +85°C with a +3.3V supply.
All digital inputs are 1.8V logic-compatible when using a
single +3V supply.
The ISL84781 is a 8 to 1 multiplexer device that is offered in a
16 Ld TSSOP package, and a 16 Ld thin QFN package.
Table 1 summarizes the performance of this family.
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
• Application Note AN557 “Recommended Test Procedures
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
for Analog Switches”
1.8V t
Configuration
3V t
Packages
1.8V R
3V R
ON
TABLE 1. FEATURES AT A GLANCE
ON
ON
/t
/t
ON
OFF
OFF
®
16 Ld TSSOP, 16 Ld 3x3 thin QFN
1
Data Sheet
16ns/13ns
24ns/16ns
ISL84781
8:1 Mux
0.55Ω
0.4Ω
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Pin Compatible Replacement for the MAX4781, and
• ON Resistance (R
• R
• R
• Single Supply Operation. . . . . . . . . . . . . . . . . +1.6V to +3.6V
• Low Power Consumption (PD). . . . . . . . . . . . . . . . . . <0.2µW
• Fast Switching Action (V
• Guaranteed Break-Before-Make
• High Current Handling Capacity (300mA Continuous)
• Available in 16 Ld TSSOP and 16 Ld 3x3 Thin QFN
• 1.8V CMOS-Logic Compatible (+3V Supply)
• Pb-Free Plus Anneal Available (RoHS Compliant)
• ISL84781IR Replaces the ISL43L680IR.
Applications
• Battery Powered, Handheld, and Portable Equipment
• Portable Test and Measurement
• Medical Equipment
• Audio Switching and Routing
MAX4617
- V+ = +3.0V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.4Ω
- V+ = +1.8V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.55Ω
- t
- t
- Cellular/Mobile Phones
- Pagers
- Laptops, Notebooks, Palmtops
ON
ON
ON
OFF
Matching Between Channels. . . . . . . . . . . . . . . . 0.12Ω
Flatness Across Signal Range . . . . . . . . . . . . . .0.056Ω
All other trademarks mentioned are the property of their respective owners.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16ns
July 31, 2006
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13ns
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004, 2006. All Rights Reserved
ON
)
S
= +3V)
ISL84781
FN6095.3

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ISL84781 Summary of contents

Page 1

... All digital inputs are 1.8V logic-compatible when using a single +3V supply. The ISL84781 multiplexer device that is offered TSSOP package, and thin QFN package. Table 1 summarizes the performance of this family. TABLE 1. FEATURES AT A GLANCE ...

Page 2

... RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD- 020C. ISL84781IR (3x3 THIN QFN) TOP VIEW ...

Page 3

... C = 1.0nF Input OFF Capacitance 1MHz, V OFF 3 ISL84781 Thermal Information Thermal Resistance (Typical, Note TSSOP Package . . . . . . . . . . . . . . . . . . . . . . 16 Ld 3x3 Thin QFN Package . . . . . . . . . . . . . . . . . Maximum Junction Temperature (Plastic Package 150°C Maximum Storage Temperature Range . . . . . . . . . . . . . -65°C to 150°C Maximum Lead Temperature (Soldering 10s 300°C ...

Page 4

... Address Transition Time 1.8V, V TRANS (See Figure 1, Note 9) Break-Before-Make Time 1.8V, V BBM (See Figure 3, Note 9) Charge Injection 1.0nF ISL84781 Test Conditions +2.7V to +3.3V, GND = 0V, V SUPPLY Unless Otherwise Specified (Continued) TEST CONDITIONS = V = 0V, (See Figure 6) NO COM = V = 0V, (See Figure 6) NO ...

Page 5

... Logic input waveform is inverted for switches that have the opposite logic sense. FIGURE 1C. ADDRESS t MEASUREMENT POINTS TRANS OFF LOGIC ON INPUT SWITCH OUTPUT V OUT Q = Δ OUT L FIGURE 2A. Q MEASUREMENT POINTS 5 ISL84781 t < 5ns r t < 5ns f VNO0 OUT LOGIC 90% INPUT Repeat test for other switches. C capacitance. t < 5ns r t < 5ns ...

Page 6

... NOx ANALYZER COM GND R L Off-Isolation is measured between COM and “Off” NO terminal on each switch. Signal direction through switch is reversed and worst case values are recorded. FIGURE 4. OFF ISOLATION TEST CIRCUIT 6 ISL84781 (Continued) t < 5ns r t < 5ns f VNOx LOGIC 90% INPUT Repeat test for other switches. C capacitance ...

Page 7

... DIODE FIGURE 7. OVERVOLTAGE PROTECTION 7 ISL84781 Power-Supply Considerations The ISL84781 construction is typical of most single supply CMOS analog multiplexers, in that it has two supply pins: V+ and GND. V+ and GND drive the internal CMOS switches = 16ns, ON and set its analog voltage limits. Unlike switches with a 4V maximum supply voltage, the ISL84781 4 ...

Page 8

... COM FIGURE 10. ON RESISTANCE vs SWITCH VOLTAGE 8 ISL84781 signal-path leakage current. All analog leakage current flows between each pin and one of the supply terminals, not to the other switch terminal. This is why both sides of a given switch can show leakage currents of the same or opposite polarity ...

Page 9

... V+ (V) FIGURE 14. INHIBIT TURN-ON TIME vs SUPPLY VOLTAGE GAIN -10 PHASE R = 50Ω 0. P-P P-P 0 FREQUENCY (MHz) FIGURE 16. FREQUENCY RESPONSE 9 ISL84781 T = 25°C, Unless Otherwise Specified (Continued 3.5 4 4.5 1 FIGURE 13. ADDRESS TRANS TIME vs SUPPLY VOLTAGE 3.5 4 4.5 FIGURE 15. INHIBIT TURN-OFF TIME vs SUPPLY VOLTAGE ...

Page 10

... Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): GND (QFN Paddle Connection: To Ground or Float) TRANSISTOR COUNT: 228 PROCESS: Submicron CMOS 10 ISL84781 FN6095.3 July 31, 2006 ...

Page 11

... Minimum space between protrusion and adjacent lead is 0.07mm (0.0027 inch). 10. Controlling dimension: MILLIMETER. Converted inch dimen- sions are not necessarily exact. (Angles in degrees) 11 ISL84781 M16.173 16 LEAD THIN SHRINK SMALL OUTLINE PLASTIC PACKAGE ...

Page 12

... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 12 ISL84781 L16.3x3A C A ...

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