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ADE7757EB Fiches technique(PDF) 5 Page - Analog Devices |
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ADE7757EB Fiches technique(HTML) 5 Page - Analog Devices |
5 / 11 page –5– PRELIMINARY TECHNICAL DATA REV. PrF EVAL-ADE7757EB JP8 Closed Analog input V2N is connected to analog ground (AGND) via the antialias filter/attenuation network. This option should be selected if Channel 2 is used in a single-ended mode. Open V2N connected to SK2B for differential operation. JP9 N SK2B connected to V2N. P SK2B connected to V2P. JP10 Open ADE7757 internal (on-chip) reference selected. Closed External (AD780) reference selected. JP11 1 SCF connected to VDD. 0 SCF connected to DGND. JP12 1 S1 connected to VDD. 0 S1 connected to DGND. JP13 1 S0 connected to VDD. 0 S0 connected to DGND. JP14 A CF logic output connected to optically isolated output at SK5. B CF logic output connected to LED. JP15 Closed VDD and +5V connected together. Note: VDD is power supply for ADE7757 IC (U1) and +5V is power supply for buffer (U2) JP16 N SK2A connected to V2N. P SK2A connected to V2P. JP17 A Trim pot R15 is connected to V2P or V2N (depending on the position of JP16)—see Figure 8. This allows the output frequency to be scaled using the voltage on V2P. B When option B is selected, the jumper JP18 should be left open. In this con- figuration the attenuation for V2P is provided via the fixed resistors R19, R20, R21 and R22. JP18 Open When open, the attenuation on V2P is provided by fixed resistor as explained above. Also see Figure 10. Closed When closed, the trim pot becomes part of the attenuation network. In this mode of operation, the resistor R21 should be removed from its PCB jack sockets and JP17B must be opened |
Numéro de pièce similaire - ADE7757EB |
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Description similaire - ADE7757EB |
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