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ADE7762 Datasheet(PDF) 7 Page - Analog Devices |
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ADE7762 Datasheet(HTML) 7 Page - Analog Devices |
7 / 28 page ADE7762 Rev. 0 | Page 7 of 28 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS LED_CTRL 1 LED_A 2 CF 3 DGND 4 LED_B 28 LED_C 27 F1 26 F2 25 VDD 5 S1 24 REVP 6 S0 23 IAP 7 CLKOUT 22 IAN 8 CLKIN 21 IBP 9 SCF 20 IBN 10 ABS 19 ICP 11 VAP 18 ICN 12 VBP 17 AGND 13 VCP 16 REFIN/OUT 14 VN 15 ADE7762 TOP VIEW (Not to Scale) Figure 4. Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 LED_CTRL LED Control Output. The LED_CTRL signal multiplexes the indication of phase drop, phase sequence error, and per phase reverse power on the LED_A, LED_B, and LED_C pins. 2 LED_A Phase A Phase Monitor Output. LEDs are connected to this pin to indicate phase drop or reverse power on Phase A (see the Phase Monitor section). 3 CF Calibration Frequency Logic Output. The CF logic output gives instantaneous active power information. This output is intended to be used for calibration purposes. 4 DGND This provides the ground reference for the digital circuitry in the ADE7762, that is, multipliers, filters, and digital-to-frequency converters. Because the digital return currents in the ADE7762 are small, it is acceptable to connect this pin to the analog ground plane of the whole system. 5 VDD Power Supply. This pin provides the supply voltage for the digital circuitry in the ADE7762. The supply voltage should be maintained at 5 V ± 5% for a specified operation. This pin should be decoupled to DGND with a 10 μF capacitor in parallel with a 100 nF ceramic capacitor. 6 REVP This logic output goes logic high when negative power is detected on the sum of the three phase powers. This output is not latched and resets when positive power is once again detected (see the Negative Total Power Detection section). 7, 8; 9, 10; 11, 12 IAP, IAN; IBP, IBN; ICP, ICN Analog Inputs for Current Channels. These channels are intended for use with current transducers and are referenced in this document as current channels. These inputs are fully differential voltage inputs with maximum differential input signal levels of ±0.5 V (see the Analog Inputs section). Both inputs have internal ESD protection circuitry; in addition, an overvoltage of ±6 V can be sustained on these inputs without risk of permanent damage. 13 AGND This pin provides the ground reference for the analog circuitry in the ADE7762 (ADCs and reference). This pin should be tied to the analog ground plane or the quietest ground reference in the system. This quiet ground reference should be used for all analog circuitry, such as antialiasing filters and current and voltage transducers. To keep ground noise around the ADE7762 to a minimum, the quiet ground plane should connect to the digital ground plane at only one point. It is acceptable to place the entire device on the analog ground plane. 14 REFIN/OUT This pin provides access to the on-chip voltage reference. The on-chip reference has a nominal value of 2.4 V ± 8% and a typical temperature coefficient of 25 ppm/°C. An external reference source can also be connected at this pin. In either case, this pin should be decoupled to AGND with a 1 μF ceramic capacitor. 15, 16, 17, 18 VN, VCP, VBP, VAP Analog Inputs for the Voltage Channels. These channels are intended for use with voltage transducers and are referenced in this document as voltage channels. These inputs are single-ended voltage inputs with a maximum signal level of ±0.5 V with respect to VN for a specified operation. All inputs have internal ESD protection circuitry; in addition, an overvoltage of ±6 V can be sustained on these inputs without risk of permanent damage. 19 ABS This logic input is used to select the method by which the three active energies from each phase are summed. It selects between the arithmetical sum of the three energies (ABS logic high) or the sum of the absolute values (ABS logic low). See the Mode Selection of the Sum of the Three Active Energies section. 20 SCF Select Calibration Frequency. This logic input is used to select the frequency on the calibration output CF. Table 7 shows how the calibration frequencies are selected. |
Similar Part No. - ADE7762_15 |
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Similar Description - ADE7762_15 |
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