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PA16 Datasheet(PDF) 4 Page - Cirrus Logic |
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PA16 Datasheet(HTML) 4 Page - Cirrus Logic |
4 / 4 page APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739 4 OPERATING CONSIDERATIONS PA16 • PA16A ��� ���� ����������������� ����� ��� � ������������������� ��� ���� ���� � � � ������������ ��� � �� �������������� ��� � �� � � �� �������������� ��� ��� � �� �� �� ��� ��� ����������������� ��������������� ���� ��� � ��� ��� �� ���� ��� ��� ������������ � �� ��� ��� � � ������ � �������� � �������������������� � �������������������� ������������� � ��������� � ��������� � ������� � ������ � ������ � ������ � ������� � ������ GENERAL Please read Application Note 1 "General Operating Considerations" which cov- ers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.apexmicrotech.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, current limit; heat sink selection; Apex’s complete Application Notes library; Technical Seminar Workbook; and Evaluation Kits. SAFE OPERATING AREA (SOA) The SOA curves combine the effect of all limits for this Power Op Amp. For a given application, the direction and magnitude of the output current should be calculated or measured and checked against the SOA curves. This is simple for resistive loads but more complex for reactive and EMF generat- ing loads. The following guidelines may save exten- sive analytical efforts: The amplifier can handle any EMF generating or reactive load and short cir- cuits to the supply rails or shorts to common if the current limits are set as follows at T C = 85°C. SHORT TO ±V S SHORT TO ±V S C, L OR EMF LOAD COMMON 18V .9A 1.8A 15V 1.0A 2.1A 10V 1.6A 3.2A These simplified limits may be exceeded with further analysis using the operating conditions for a specific application. CURRENT LIMIT Proper operation requires the use of two current limit resistors, connected as shown in the external connection diagram. The minimum value for R CL is 0.12 ohm, however for optimum reliability it should be set as high as possible. Refer to the “General Operating Considerations” section of the handbook for current limit adjust details. .65 R CL = -0.01 I LIM (A) DEVICE MOUNTING The case (mounting flange) is electrically isolated and should be mounted directly to a heatsink with thermal compound. Screws with Belville spring washers are recommended to maintain positive clamping pressure on heatsink mounting surfaces. Long periods of thermal cycling can loosen mounting screws and increase thermal resistance. Since the case is electrically isolated (floating) with respect to the internal circuits it is recommended to connect it to common or other convenient AC ground potential. � � ������� � � ������� ��� ��� ��� ��� ��� ��� ��� ��� ��� � � � �� � �� �� �� �� �� ��������������������������������������� ��������� ��� This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice. PA16U REV F MARCH 2003 © 2003 Apex Microtechnology Corp. |
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