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ADC12DL080 датащи(PDF) 5 Page - National Semiconductor (TI) |
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ADC12DL080 датащи(HTML) 5 Page - National Semiconductor (TI) |
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5 / 24 page ![]() Pin Descriptions and Equivalent Circuits (Continued) Pin No. Symbol Equivalent Circuit Description ANALOG POWER 9, 18, 19, 62, 63 V A Positive analog supply pins. These pins should be connected to a quiet +3.3V source and bypassed to AGND with 0.1 µF capacitors located near the power pins, and with a 10 µF capacitor. 3, 8, 10, 17, 20, 61, 64 AGND The ground return for the analog supply. DIGITAL POWER 33, 48 V D Positive digital supply pin. This pin should be connected to the same quiet +3.3V source as is V A and be bypassed to DGND with a 0.1 µF capacitor located near the power pins, and with a 10 µF capacitor. 32, 49 DGND The ground return for the digital supply. 30, 51 V DR Positive driver supply pin for the ADC12DL080’s output drivers. This pin should be connected to a voltage source of +2.4V to V D and be bypassed to DRGND with a 0.1 µF capacitor. This supply should also be bypassed with a 10 µF capacitor. V DR should never exceed the voltage on V D. All 0.1 µF bypass capacitors should be located near the supply pin. 23, 31, 40, 50, 58 DRGND The ground return for the digital supply for the ADC12DL080’s output drivers. These pins should be connected to the system digital ground, but not be connected in close proximity to the ADC12DL080’s DGND or AGND pins. See Section 5 (Layout and Grounding) for more details. www.national.com 5 |
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