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AD8362 Datasheet(PDF) 28 Page - Analog Devices |
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AD8362 Datasheet(HTML) 28 Page - Analog Devices |
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28 / 32 page ![]() AD8362 Data Sheet Rev. E | Page 28 of 32 AD8362 EVALUATION BOARD The AD8362 evaluation board provides for a number of dif- ferent operating modes and configurations, including many described in this data sheet. The measurement mode is set up by positioning SW2 as shown in Figure 67. The AD8362 can be operated in controller mode by applying the setpoint voltage to the VSET connector, and flipping SW2 to its alternate position. The internal voltage reference is used for the target voltage when SW1 is in the position shown in Figure 67. This voltage may optionally be reduced via a voltage divider implemented with R4 and R5, with LK1 in place, and SW1 switched to its alternate position. Alternatively, an external target voltage may be used with SW1 switched to its alternate position, LK1 removed, and the external target voltage applied to the VTGT connector. In measurement mode, the slope of the response at VOUT may be increased by using a voltage divider implemented with resis- tors in Position R17 and Position R9, and with SW2 switched to its alternate position. The AD8362 is powered up with SW3 in the position shown in Figure 67 and connector PWDN open. The part can be powered down by either connecting a logic high voltage to a connector, PWDN, with SW3 in the position, or by switching SW3 to its alternate position. 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 COMM CHPF DECL INHI INLO DECL PWDN COMM ACOM VREF VTGT VPOS VOUT VSET ACOM CLPF AD8362 C6 100pF C5 100pF C7 1000pF C4 1000pF R15 0Ω R14 OPEN C8 1000pF SW3 R16 OPEN C10 1000pF RFIN PWDN R13 10kΩ R17 OPEN SW2 C3 0.1µF C9 OPEN R9 10kΩ R5 10kΩ R4 0Ω R6 0Ω R7 0Ω LK1 VREF VTGT VOUT VSET SW1 R10 0Ω R8 0Ω VPOS R1 0Ω C2 100pF C1 0.1µF AGND T1 Figure 67. Evaluation Board Schematic |
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