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ADE7880 数据表(PDF) 11 Page - Analog Devices |
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ADE7880 数据表(HTML) 11 Page - Analog Devices |
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11 / 104 page  Data Sheet ADE7880 Rev. A | Page 11 of 104 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS NOTES 1. NC = NO CONNECT. 2. CREATE A SIMILAR PAD ON THE PCB UNDER THE EXPOSED PAD. SOLDER THE EXPOSED PAD TO THE PAD ON THE PCB TO CONFER MECHANICAL STRENGTH TO THE PACKAGE. DO NOT CONNECT THE PADS TO AGND OR DGND. NC PM0 PM1 RESET DVDD DGND IAP IAN IBP NC VAP AVDD AGND VDD CLKIN CLKOUT IRQ0 NC VBP NC 1 2 3 4 5 6 7 8 9 10 23 24 25 26 27 28 29 30 22 21 ADE7880 TOP VIEW (Not to Scale) Figure 6. Pin Configuration Table 7. Pin Function Descriptions Pin No. Mnemonic Description 1, 10, 11, 20, 21, 30, 31, 40 NC No Connect. Do not connect to these pins. These pins are not connected internally. 2 PM0 Power Mode Pin 0. This pin, combined with PM1, defines the power mode of the ADE7880, as described in Table 8. 3 PM1 Power Mode Pin 1. This pin defines the power mode of the ADE7880 when combined with PM0, as described in Table 8. 4 RESET Reset Input, Active Low. In PSM0 mode, this pin should stay low for at least 10 μs to trigger a hardware reset. 5 DVDD This pin provides access to the on-chip 2.5 V digital LDO. Do not connect any external active circuitry to this pin. Decouple this pin with a 4.7 μF capacitor in parallel with a ceramic 220 nF capacitor. 6 DGND Ground Reference. This pin provides the ground reference for the digital circuitry. 7, 8 IAP, IAN Analog Inputs for Current Channel A. This channel is used with the current transducers and is referenced in this data sheet as Current Channel A. These inputs are fully differential voltage inputs with a maximum differential level of ±0.5 V. This channel also has an internal PGA equal to the ones on Channel B and Channel C. 9, 12 IBP, IBN Analog Inputs for Current Channel B. This channel is used with the current transducers and is referenced in this data sheet as Current Channel B. These inputs are fully differential voltage inputs with a maximum differential level of ±0.5 V. This channel also has an internal PGA equal to the ones on Channel C and Channel A. 13, 14 ICP, ICN Analog Inputs for Current Channel C. This channel is used with the current transducers and is referenced in this data sheet as Current Channel C. These inputs are fully differential voltage inputs with a maximum differential level of ±0.5 V. This channel also has an internal PGA equal to the ones on Channel A and Channel B. 15, 16 INP, INN Analog Inputs for Neutral Current Channel N. This channel is used with the current transducers and is referenced in this data sheet as Current Channel N. These inputs are fully differential voltage inputs with a maximum differential level of ±0.5 V. This channel also has an internal PGA, different from the ones found on the A, B, and C channels. 17 REFIN/OUT This pin provides access to the on-chip voltage reference. The on-chip reference has a nominal value of 1.2 V. An external reference source with 1.2 V ± 8% can also be connected at this pin. In either case, decouple this pin to AGND with a 4.7 μF capacitor in parallel with a ceramic 100 nF capacitor. After reset, the on-chip reference is enabled. |
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