austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: ams sales ams.com Please visit our website at www.ams.com Dat a Sh eet AS1744 , AS1745 High-Speed, Low-Voltage, Dual, Single-Supply, 4, SPDT Analog Switches 1 General Description 2 Key Features ON-Resistance: The AS1744/AS1745 are high-speed, low-voltage, dual single-pole/double-throw (SPDT) analog switches. -4 (+5V supply) -5.5 (+3V supply) Fast switching speeds, low ON-resistance, and low power-consumption make these devices ideal for single- RON Matching: 0.2 (+5V supply) cell battery powered applications. RON Flatness: 1 (+5V supply) These highly-reliable devices operate from a +1.8 to Supply Voltage Range: +1.8 to +5.5V +5.5V supply, are differentiated by inverted logic, and support break-before-make switching. 1.8V Operation: With low ON-resistance (RON), RON matching, and RON -9.5 ON-Resistance over Temperature flatness, the devices can accurately switch signals for - 38ns Turn On Time sample and hold circuits, digital filters, and op-amp gain - 12ns Turn Off Time switching networks. Current-Handling: 100mA Continuous The devices are available in a 10-pin MSOP package and a 10-pin TDFN package. 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 +85C 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. Figure 1. Block Diagrams 1 10 1 10 IN1 COM1 IN1 COM1 Truth Table 2 9 2 9 NOx to NCx to INx NC1 NO1 NO1 NC1 COMx COMx 3 8 3 8 Low Off On AS1745 AS1744 V+ V+ GND GND High On Off 4 7 4 7 Switches shown for low input. NC2 NO2 NO2 NC2 5 6 5 6 IN2 COM2 IN2 COM2 www.austriamicrosystems.com Revision 1.53 1 - 16 ams AG Technical content still valid