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AS1745 Datasheet(PDF) 1 Page - ams AG |
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AS1745 Datasheet(HTML) 1 Page - ams AG |
1 / 16 page AS1744 , AS1745 High-Speed, Low-Volta ge, Dual, Single-Supply, 4 Ω, SPDT Analog Switches www.austriamicrosystems.com Revision 1.53 1 - 16 austriamicrosystems Dat a Sh eet 1 General Description The AS1744/AS1745 are high-speed, low-voltage, dual single-pole/double-throw (SPDT) 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 +1.8 to +5.5V supply, are differentiated by inverted logic, and support break-before-make switching. With 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 devices are available in a 10-pin MSOP package and a 10-pin TDFN package. Figure 1. Block Diagrams 2 Key Features ! ON-Resistance: -4 Ω (+5V supply) -5.5 Ω (+3V supply) ! RON Matching: 0.2 Ω (+5V supply) ! RON Flatness: 1 Ω (+5V supply) ! Supply Voltage Range: +1.8 to +5.5V ! 1.8V Operation: -9.5 Ω ON-Resistance over Temperature - 38ns Turn On Time - 12ns Turn Off Time ! Current-Handling: 100mA Continuous ! Break-Before-Make Switching ! Rail-to-Rail Signal Handling ! Crosstalk: -90dB at 1MHz ! Off-Isolation: -85dB at 1MHz ! Total Harmonic Distortion: 0.1% ! Operating Temperature Range: -40 to +85ºC ! Package Types: - 10-pin MSOP - 10-pin TDFN 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, and any other application where high-speed signal switching is required. AS1744 AS1745 1 IN1 10 COM1 2 NO1 3 GND 5 IN2 4 NO2 9 NC1 8 V+ 7 NC2 6 COM2 1 IN1 2 NC1 3 GND 5 IN2 4 NC2 10 COM1 9 NO1 8 V+ 7 NO2 6 COM2 Truth Table Switches shown for low input. INx NOx to COMx NCx to COMx Low Off On High On Off |
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