поискавой системы для электроныых деталей |
|
ADE7757ARN датащи(PDF) 5 Page - Analog Devices |
|
ADE7757ARN датащи(HTML) 5 Page - Analog Devices |
5 / 14 page PRELIMINARY TECHNICAL DATA REV. PrC. –5– ADE7757 PIN FUNCTION DESCRIPTIONS Pin No. Mnemonic Description 1VDD Power Supply. This pin provides the supply voltage for the circuitry in the ADE7757. The supply voltage should be maintained at 5 V ± 5% for specified operation. This pin should be decoupled with a 10 µF capacitor in parallel with a ceramic 100 nF capacitor. 2,3 V2P, V2N Analog Inputs for Channel V2 (voltage channel). These inputs provide a fully differential input pair. The maximum differential input voltage is ±165 mV for specified operation. The maximum signal level at these pins is ±165 mV with respect to AGND. Both inputs have internal ESD protection circuitry and an overvoltage of ±6 V can also be sustained on these inputs without risk of permanent damage. 4, 5 V1N, V1P Analog Inputs for Channel V1 (current channel). These inputs are fully differential voltage inputs with a maximum signal level of ±30 mV with respect to pin V1N for specified opera- tion. The maximum signal level at this pin is ±165 mV with respect to AGND. Both inputs have internal ESD protection circuitry and in addition an overvoltage of ±6 V can be sus- tained on these inputs without risk of permanent damage. 6 AGND This provides the ground reference for the analog circuitry in the ADE7757, i.e., ADCs and reference. This pin should be tied to the analog ground plane of the PCB. The analog ground plane is the ground reference for all analog circuitry, e.g., antialiasing filters, current and voltage sensors, etc. For accurate noise suppression, the analog ground plane should only be connected to the digital ground plane at one point. A star ground configuration will help to keep noisy digital currents away from the analog circuits. 7 REFIN/OUT This pin provides access to the on-chip voltage reference. The on-chip reference has a nomi- nal value of 2.5 V ± 8% and a typical temperature coefficient of 30 ppm/°C. An external reference source may also be connected at this pin. In either case this pin should be decoupled to AGND with a 1 µF tantalum capacitor and 100 nF ceramic capacitor. 8 S C F Select Calibration Frequency. This logic input is used to select the frequency on the calibra- tion output CF. Table III shows calibration frequencies selection. 9,10 S1, S0 These logic inputs are used to select one of four possible frequencies for the digital-to-fre- quency conversion. With this logic input, designers have greater flexibility when designing an energy meter. See Selecting a Frequency for an Energy Meter Application. Selecting a Frequency for an Energy Meter Application. Selecting a Frequency for an Energy Meter Application. Selecting a Frequency for an Energy Meter Application. Selecting a Frequency for an Energy Meter Application. 11 RCLKIN To enable the internal oscillator as a clock source to the chip, a precise 5 k Ω resistor must be connected from this pin to DGND. 12 RESERVED Reserved pin. No load should be connected to this pin. 13 DGND This provides the ground reference for the digital circuitry in the ADE7757, i.e., multiplier, filters and digital-to-frequency converter. This pin should be tied to the digital ground plane of the PCB. The digital ground plane is the ground reference for all digital circuitry, e.g., counters (mechanical and digital), MCUs and indicator LEDs. For accurate noise suppres- sion the analog ground plane should only be connected to the digital ground plane at one point only, e.g., a star ground. 14 C F Calibration Frequency Logic Output. The CF logic output provides instantaneous real power information. This output is intended for calibration purposes. Also see SCF pin description. 15,16 F2,F1 Low Frequency Logic Outputs. F1 and F2 supply average real power information. The logic outputs can be used to directly drive electromechanical counters and two phase stepper mo- tors. See Transfer Function. Transfer Function. Transfer Function. Transfer Function. Transfer Function. PIN CONFIGURATION SOIC-16nb Package TOP VIEW (Not to Scale) ADE7757 VDD V2P V2N V1N F1 V1P AGND REFIN/OUT SCF F2 CF DGND RESERVED RCLKIN S0 S1 1 4 7 3 2 6 5 14 11 15 16 12 13 8 9 10 |
Аналогичный номер детали - ADE7757ARN |
|
Аналогичное описание - ADE7757ARN |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |