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AS1743H-T Datasheet(PDF) 1 Page - ams AG |
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AS1743H-T Datasheet(HTML) 1 Page - ams AG |
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1 / 15 page  AS1741, AS1742, AS1743 High-Speed, Low-Volta ge, Single-Supply, 0.8 Ω, Dual SPST Analog Switches Dat a Sh eet www.austriamicrosystems.com Revision 1.78 1 - 15 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. 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: -0.8 Ω (+3V supply) -2.5 Ω (+1.8V supply) ! RON Matching: 0.08 Ω (+3V supply) ! RON Flatness: 0.18 Ω (+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 AS1743 AS1742 NO1 COM1 IN2 GND V+ IN1 COM2 NO2 NC1 COM1 IN2 GND V+ IN1 COM2 NC2 NC2 V+ IN1 COM2 NO1 COM1 IN2 GND |
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