AS1743 austriamicrosystems, AS1743 Datasheet

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AS1743

Manufacturer Part Number
AS1743
Description
(AS1741 - AS1743) Dual SPST Analog Switches
Manufacturer
austriamicrosystems
Datasheet

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A S 1 7 4 1 , A S 1 7 4 2 , A S 1 7 4 3
H i g h - Sp e e d , L o w - Vo l ta g e , S i n g l e - S u p p l y, 0 . 8Ω,
D u a l S P S T A n a l o g S w i t c h e s
1 General Description
The AS1741/AS1742/AS1743 are high-speed, low-volt-
age, dual single-pole/single-throw (SPST) analog
switches.
Fast switching speeds, low ON-resistance, and low
power-consumption make these devices ideal for single-
cell battery powered applications.
These highly-reliable devices operate from a single +1.6
to +3.6V supply, and are differentiated by the type and
number of switches as listed in
Table 1. Standard Products
The AS1743 supports break-before-make switching.
With very low ON-resistance (R
R
for sample and hold circuits, digital filters, and op-amp
gain switching networks.
The AS1741/AS1742/AS1743 digital logic input is 1.8V
CMOS-compatible when using a single +3V supply, and
all devices can handle Rail-to-Rail signals.
The devices are available in an 8-pin MSOP package
and an 8-pin SOT23 package.
Figure 1. MSOP Block Diagrams
www.austriamicrosystems.com
ON
AS1741
AS1742
AS1743
COM1
Model
flatness, the devices can accurately switch signals
GND
NO1
IN2
AS1741
Two Normally Closed (NC) Switches
One NO Switch and One NC Switch
Two Normally Open (NO) Switches
V+
IN1
COM2
NO2
Switch Types
Table
ON
), R
1.
ON
matching, and
COM1
GND
NC1
IN2
Revision 1.76
AS1742
2 Key Features
3 Applications
The devices are ideal for use in power routing systems,
cordless and mobile phones, MP3 players, CD and DVD
players, PDAs, handheld computers, digital cameras,
hard drives, and any other application where high-speed
signal switching is required.
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- 0.8Ω (+3V supply)
- 2.5Ω (+1.8V supply)
- 8-pin MSOP
- 8-pin SOT23
ON-Resistance:
R
R
Supply Voltage Range: +1.6 to +3.6V
Switching Action: t
Current-Handling: 250mA Continuous
Break-Before-Make Switching (AS1743)
Rail-to-Rail Signal Handling
1.8V CMOS Logic Compatible (+3V supply)
Total Harmonic Distortion: 0.03%
Operating Temperature Range: -40 to +85ºC
Package Types:
ON
ON
V+
IN1
COM2
NC2
a us t ria
Matching: 0.08Ω (+3V supply)
Flatness: 0.18Ω (+3V supply)
ON
COM1
GND
NO1
= 22ns, t
IN2
m i c r o
AS1743
OFF
= 14ns
s y s t e m s
V+
IN1
COM2
D a t a S h e e t
NC2
1 - 15

Related parts for AS1743

AS1743 Summary of contents

Page 1

... ON for sample and hold circuits, digital filters, and op-amp gain switching networks. The AS1741/AS1742/AS1743 digital logic input is 1.8V CMOS-compatible when using a single +3V supply, and all devices can handle Rail-to-Rail signals. The devices are available in an 8-pin MSOP package and an 8-pin SOT23 package ...

Page 2

... AS1741, AS1742, AS1743 Data Sheet 4 Absolute Maximum Ratings Stresses beyond those listed in Table 2 and functional operation of the device at these or any other conditions beyond those indicated in Characteristics on page 3 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ...

Page 3

... AS1741, AS1742, AS1743 Data Sheet 5 Electrical Characteristics Table 3. Power Supply Characteristics Symbol Parameter V+ Power Supply Range Positive Supply I+ Current V+ = +2.7 to +3.6V +1.4V +0.5V +3.0V +25ºC. AMB Table 4. +3V Supply Electrical Characteristics Symbol Parameter Analog Switch V , COMx Analog Signal Range NOx NCx ...

Page 4

... LOAD AMB Figures 12 1.5V, T NOx NCx AMB R = 50Ω, LOAD C = 35p, LOAD AMB Figure 14, (AS1743) 8-pin MSOP V = 1.8V GEN GEN C = 1.0nF, Figure 15 LOAD 8-pin SOT23 f = 1MHz COMx RMS R = 50Ω 5pF, Figure LOAD LOAD f = 1MHz, V ...

Page 5

... AS1741, AS1742, AS1743 Data Sheet 6 Typical Operating Characteristics Figure 2. Charge Injection vs. Output Voltage; SOT23 1. 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 3.3 V (V) BIAS Figure 4. R vs. V and Temperature COM 0.50 Temp = +85ºC 0.45 0.40 Temp = +25ºC 0.35 0.30 Temp = -40ºC 0.25 0.20 0 0 (V) COM Figure ...

Page 6

... AS1741, AS1742, AS1743 Data Sheet Figure 8. THD vs. Frequency; R LOAD 0.06 0.05 0.04 0.03 0.02 0.01 0. Frequency (kHz) www.austriamicrosystems.com = 32Ω Figure 9. Frequency Response -20 -40 -60 -80 -100 -120 0.001 100 Revision 1.76 austriam systems Bandwidth 0.1 10 1000 Frequency (MHz ...

Page 7

... AS1741, AS1742, AS1743 Data Sheet 7 Pinout Pin Assignments Figure 10. MSOP Pin Assignments (Top View) NO1 COM1 7 IN1 2 AS1741 IN2 6 COM2 3 GND 5 NO2 4 Figure 11. SOT23 Pin Assignments (Top View) IN1 8 NO1 COM1 2 AS1741 NO2 6 IN2 3 COM2 5 GND 4 Pin Descriptions Table 6. Pin Descriptions ...

Page 8

... Typical Operating Characteristics on page Logic Inputs The AS1741/AS1742/AS1743 logic inputs can be driven up to +3.6V regardless of the supply voltage value. For exam- ple, with a +1.8V supply may be driven low to GND and high to +3.6V. This allows the devices to interface with +3V systems using a supply of less than 3V. ...

Page 9

... Timing Diagrams and Test Setups Figure 12. AS1741/ AS1743 Test Circuit and Timing Diagram V+ NOx V+ AS1741/ AS1743 INx COMx 50Ω 50Ω GND Figure 13. AS1742 / AS1743 Test Circuit and Timing Diagram V+ NCx V+ AS1742/ AS1743 INx COMx 50Ω 50Ω GND www.austriamicrosystems.com Figure 17 on page ...

Page 10

... AS1741, AS1742, AS1743 Data Sheet Figure 14. AS1743 Test Circuit and Timing Diagram V S NC2 NO1 V+ V+ AS1743 COM1 COM2 INx 50Ω 50Ω GND Figure 15. Charge Injection NCx NOx AS174x INx COMx C V 50Ω IN 1000pF GND Figure 16. NOx, NCx, and COMx Capacitance ...

Page 11

... AS1741, AS1742, AS1743 Data Sheet Figure 17. Off-Isolation, On-Loss, and Crosstalk NOx NCx 0.1µF AS1741/ AS1742/ AS1743 V+ INx COMx GND † Use 50Ω termina- tion for off-isolation Notes: 1. Measurements are standardized against short-circuit at socket terminals. 2. Off-isolation is measured between COMx and the off NCx/NOx terminal of each switch. Off-isolation = 20log(V 3. Signal direction through the switch is reversed ...

Page 12

... AS1741, AS1742, AS1743 Data Sheet 10 Package Drawings and Markings The devices are available in an 8-pin MSOP package and an 8-pin SOT23 package. Figure 18. 8-pin MSOP Package Notes: 1. All dimensions are in millimeters, angles in degrees, unless otherwise specified. 2. Datums B and determined at datum plane H. ...

Page 13

... AS1741, AS1742, AS1743 Data Sheet Figure 19. 8-pin SOT23 Package Notes: 1. All dimensions are in millimeters. 2. Foot length measured at intercept point between datum A and lead surface. 3. Package outline exclusive of mold flash and metal burr. 4. Package outline inclusive of solder plating. 5. Complies with EIAJ SC74 (6-lead version). ...

Page 14

... AS1741, AS1742, AS1743 Data Sheet 11 Ordering Information The devices are available as the standard products shown in Table 7. Ordering Information Model Markings AS1741G AS1741G-T † ASJL AS1741H-T AS1742G AS1742G-T AS1742H-T ASJK AS1743G AS1743G-T † ASJM AS1743H-T † Available upon request www.austriamicrosystems.com Table 7. Description ...

Page 15

... AS1741, AS1742, AS1743 Data Sheet Copyrights Copyright © 1997-2005, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, trans- lated, stored, or used without the prior written consent of the copyright owner. ...

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