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ADM560JRZ Datasheet(PDF) 1 Page - Analog Devices |
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ADM560JRZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 12 page Ultralow Power +3.3 V, RS-232 Notebook PC Serial Port Drivers/Receivers ADM560/ADM561 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. FEATURES RS-232 compatible Operates with 3 V or 5 V logic Ultralow power CMOS: 1.3 mA operation Low power shutdown: 0.2 μA Suitable for serial port mice 116 kbps data rate 1 μF charge pump capacitors Single +3 V to +3.6 V power supply Two receivers active in shutdown (ADM560) APPLICATIONS Notebook computers Peripherals Modems Printers Battery-operated equipment FUNCTIONAL BLOCK DIAGRAM 7 16 15 14 12 13 17 11 T1 2 T1IN T1OUT 6 T2 3 T2IN T2OUT 20 T3 1 T3IN T3OUT 24 21 T4 28 T4IN T4OUT R1 9 R1OUT R1IN 8 R2 4 R2OUT R2IN 5 R3 27 R3OUT R3IN 26 R4 23 R4OUT R4IN 22 R5 18 25 R5OUT R5IN SHDN (ADM561) 19 10 C1+ C1– C2+ VCC V+ V– C2– + + GND +3.3V TO +6.6V VOLTAGE DOUBLER +6.6V TO –6.6V VOLTAGE INVERTER 0.1µF C3 1µF 6.3V 1µF 10V 1µF 10V C4 1µF 10V EIA/TIA-232 OUTPUTS EIA/TIA-232 INPUTS SHDN (ADM560) ADM560/ ADM561 +3.3V INPUT CMOS INPUTS CMOS OUTPUTS EN (ADM560) EN (ADM561) Figure 1. GENERAL DESCRIPTION The ADM560/ADM561 are four driver/five receiver interface devices designed to meet the EIA-232 standard and operate with a single +3.3 V power supply. The devices feature an on-board dc-to-dc converter, eliminating the need for dual ±5 V power supplies. This dc-to-dc converter contains a voltage doubler and voltage inverter, both of which internally generate ±6.6 V from the input +3.3 V power supply. The ADM560 and the ADM561 consume only 5 mW making them ideally suited for battery and other power-sensitive appli- cations. A shutdown facility is also provided to reduce the power to 0.66 μW. The ADM560 contains active low shutdown and an active high receiver enable signal. In shutdown mode, two receivers remain active, thereby allowing monitoring of peripheral devices. This feature allows the device to be shut down until a peripheral device begins communication. The active receivers alert the processor, and then take the ADM560 out of shutdown mode. The ADM561 features active high shutdown and an active low receiver enable. In this device, all receivers are disabled in shutdown. The ADM560/ADM561 are fabricated using CMOS technology for minimal power consumption. They feature a high level of over-voltage protection and latch-up immunity. The receiver inputs can withstand up to ±25 V levels. The transmitter inputs can be driven from either 3 V or 5 V logic levels. This allows operation in mixed 3 V/5 V power supply systems. The ADM560/ADM561 are packaged in a 28-lead SOIC and a 28-lead SSOP package. |
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