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A1204 Datasheet(PDF) 10 Page - Allegro MicroSystems |
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A1204 Datasheet(HTML) 10 Page - Allegro MicroSystems |
10 / 13 page 10 A1201-DS, Rev. 2 Worcester, Massachusetts 01615-0036 (508) 853-5000 115 Northeast Cutoff, Box 15036 www.allegromicro.com Allegro MicroSystems, Inc. Continuous-Time Bipolar Switch Family A1201, A1202, A1203, and A1204 The choice between continuous-time and chopper-stabilized designs is solely determined by the application. Battery manage- ment is an example where continuous-time is often required. In these applications, VCC is chopped with a very small duty cycle in order to conserve power (refer to figure 4). The duty cycle is controlled by the power-on time, tPO, of the device. Because continuous-time devices have the shorter power-on time, they are the clear choice for such applications. For more information on the chopper stabilization technique, refer to Technical Paper STP 97-10, Monolithic Magnetic Hall Sensor Using Dynamic Quadrature Offset Cancellation and Technical Paper STP 99-1, Chopper-Stabilized Amplifiers with a Track-and-Hold Signal Demodulator. ADDITIONAL APPLICATIONS INFORMATION Extensive applications information for Hall-effect sensors is available in: • Hall-Effect IC Applications Guide, Application Note 27701 • Hall-Effect Devices: Gluing, Potting, Encapsulating, Lead Welding and Lead Forming, Application Note 27703.1 • Soldering Methods for Allegro’s Products – SMT and Through- Hole, Application Note 26009 All are provided in Allegro Electronic Data Book, AMS-702, and the Allegro Web site, www.allegromicro.com. |
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