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AD8001AN Fiches technique(PDF) 13 Page - Analog Devices |
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AD8001AN Fiches technique(HTML) 13 Page - Analog Devices |
13 / 16 page REV. C AD8001 –13– 0.1 F +VS –VS 20 50 1k 18 17 16 15 14 13 12 11 –VREF A 10pF CLOCK 5, 9, 22, 24, 37, 41 4,19, 21 25, 27, 42 0.1 F 38 8 –VREF B 6 +VINT 2 3 +VREF A AIN A 649 324 ANALOG IN A 0.5V 1.3k AD707 43 +VREF B 20k 0.1 F –2V 1.3k 20k 649 ANALOG IN B 0.5V 324 20 0.1 F 40 COMP 1 AIN B ENCODE A ENCODE B 10 36 ENCODE 74ACT04 0.1 F +5V 28 29 30 31 32 33 34 35 RZ1 RZ2 D0A (LSB) D7A (MSB) D0B (LSB) D7B (MSB) 7, 20, 26, 39 –5V 1N4001 AD9058 (J-LEAD) RZ1, RZ2 = 2,000 SIP (8-PKG) 8 8 AD8001 AD8001 Figure 48. AD8001 Driving a Dual A-to-D Converter Driving A-to-D Converters The AD8001 is well suited for driving high speed analog-to- digital converters such as the AD9058. The AD9058 is a dual 8-bit 50 MSPS ADC. In the circuit below the AD8001 is shown driving the inputs of the AD9058, which are configured for 0 V to +2 V ranges. Bipolar input signals are buffered, amplified (–2 ×), and offset (by +1.0 V) into the proper input range of the ADC. Using the AD9058’s internal +2 V reference connected to both ADCs as shown in Figure 48 reduces the number of external components required to create a complete data acquisition system. The 20 Ω resistors in series with ADC in- puts are used to help the AD8001s drive the 10 pF ADC input capacitance. The AD8001 only adds 100 mW to the power consumption while not limiting the performance of the circuit. |
Numéro de pièce similaire - AD8001AN |
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Description similaire - AD8001AN |
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