Dual 0.80 pages

AS1741, AS1742, AS1743
High-Speed, Low-Voltage, Single-Supply, 0.8Ù,
Dual SPST Analog Switches
Data Sheet
www.austriamicrosystems.com Revision 1.78 1 - 15
1 General Description
The AS1741/AS1742/AS1743 are high-speed, low-voltage,
dual single-pole/single-throw (SPST) analog
switches.
Fast switching speeds, low ON-resistance, and low
power-consumption make these devices ideal for singlecell
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.
The AS1743 supports break-before-make switching.
With very low ON-resistance (RON), RON matching, and
RON flatness, the devices can accurately switch signals
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
2 Key Features
! ON-Resistance:
- 0.8Ù (+3V supply)
- 2.5Ù (+1.8V supply)
! RON Matching: 0.08Ù (+3V supply)
! RON Flatness: 0.18Ù (+3V supply)
! Supply Voltage Range: +1.6 to +3.6V
! Switching Action: tON = 22ns, tOFF = 14ns
! 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:
- 8-pin MSOP
- 8-pin SOT23
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.
Table 1. Standard Products
Model Switch Types
AS1741 Two Normally Open (NO) Switches
AS1742 Two Normally Closed (NC) Switches
AS1743 One NO Switch and One NC Switch
AS1741 AS1742 AS1743
NO1
COM1
IN2
GND
V+
IN1
COM2
NO2
NC1
COM1
IN2
GND
V+
IN1
COM2
NC2 NC2
V+
IN1
COM2
NO1
COM1
IN2
GND