Analog Devices ADE7753 manual

One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 200 2 REV. PrC 1/02 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents o[...]

-2- (AV DD = DV DD = 5V ± 5%, AGND = DGND = 0V, On-Chip Reference, CLKIN = 3.579545MHz XTAL, TMIN to TMAX = -40°C to +85°C) REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA ADE7753–SPECIFICA TIONS 1,3 Parameter Spec Units Test Conditions/Comments ENERGY MEASUREMENT ACCURACY Measurement Bandwidth 1 4 k H z CLKIN = 3.579545 MHz Measurement Error 1 on[...]

ADE7753 –3– REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA Parameter Spec Units Test Conditions/Comments REFERENCE INPUT REF IN/OUT Input Voltage Range 2. 6 V max 2.4 V +8% 2 . 2 V min 2.4V -8% Input Capacitance 1 0 pF max ON-CHIP REFERENCE Nominal 2.4V at REF IN/OUT pin Reference Error ±200 m V m a x Current source 1 0 µA max Output Impedance 4[...]

ADE7753 – 4 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA CS SCLK DIN A4 A3 A2 A1 A0 DB7 Most Significant Byte t 1 t 2 t 3 t 4 t 5 t 8 1 DB0 DB7 DB0 t 6 Least Significant Byte t 7 t 7 00 Command Byte CS SCLK DIN A4 A3 A2 A1 A0 t 1 t 11 t 11 t 9 DB7 DOUT t 12 DB0 DB0 DB7 t 10 t 13 Most Significant Byte Least Significant Byte 000 Command Byte Ser[...]

ADE7753 – 5 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA T erminology MEASUREMENT ERROR MEASUREMENT ERROR MEASUREMENT ERROR MEASUREMENT ERROR MEASUREMENT ERROR The error associated with the energy measurement made by the ADE7753 is defined by the following formula: % Energy True Energy True ADE by registered Energy Error Percentage 100 7753 ´[...]

ADE7753 – 6 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA PIN FUNCTION DESCRIPTION PIN FUNCTION DESCRIPTION PIN FUNCTION DESCRIPTION PIN FUNCTION DESCRIPTION PIN FUNCTION DESCRIPTION Pin No. Pin No. Pin No. Pin No. Pin No. MNEMONIC MNEMONIC MNEMONIC MNEMONIC MNEMONIC DESCRIPTION DESCRIPTION DESCRIPTION DESCRIPTION DESCRIPTION 1 RESET Reset pin [...]

ADE7753 – 7 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA PIN CONFIGURATION PIN CONFIGURATION PIN CONFIGURATION PIN CONFIGURATION PIN CONFIGURATION SSOP Packages 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 DGND CS CLKOU T CLKIN ZX CF ADE7753 TOP VIEW (Not to Scale) AGND IRQ RESET DVDD V1P V1N V2N V2P SAG REF IN/OUT 11 12 AVDD DIN DOUT SCLK Pin[...]

ADE7753 – 8 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA Typical Performance Characteristics-ADE7753[...]

ADE7753 – 9 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA ANALOG INPUTS ANALOG INPUTS ANALOG INPUTS ANALOG INPUTS ANALOG INPUTS The ADE7753 has two fully differential voltage input chan- nels. The maximum differential input voltage for input pairs V1P/V1N and V2P/V2N are ±0.5V. In addition, the maxi- mum signal level on analog inputs for V1P/V[...]

ADE7753 – 10 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA Waveform register will give an indication of the offset in the channel. This offset can be canceled by writing an equal and opposite offset value to the relevant offset register. The offset correction can be confirmed by performing another read. Note when adjusting the offset of Channel[...]

ADE7753 – 11 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA ZERO CROSSING DETECTION ZERO CROSSING DETECTION ZERO CROSSING DETECTION ZERO CROSSING DETECTION ZERO CROSSING DETECTION The ADE7753 has a zero crossing detection circuit on Channel 2. This zero crossing is used to produce an external zero cross signal (ZX) and it is also used in the cal[...]

ADE7753 – 12 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA POWER SUPPLY MONITOR POWER SUPPLY MONITOR POWER SUPPLY MONITOR POWER SUPPLY MONITOR POWER SUPPLY MONITOR The ADE7753 also contains an on-chip power supply moni- tor. The Analog Supply (AV DD ) is continuously monitored by the ADE7753. If the supply is less than 4V ± 5% then the ADE7753[...]

ADE7753 – 13 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA ADE7753 INTERRUPTS ADE7753 INTERRUPTS ADE7753 INTERRUPTS ADE7753 INTERRUPTS ADE7753 INTERRUPTS ADE7753 Interrupts are managed through the Interrupt Status register (STATUS[15:0]) and the Interrupt Enable register (IRQEN[15:0]). When an interrupt event occurs in the ADE7753, the correspo[...]

ADE7753 – 14 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA TEMPERATURE MEASUREMENT TEMPERATURE MEASUREMENT TEMPERATURE MEASUREMENT TEMPERATURE MEASUREMENT TEMPERATURE MEASUREMENT ADE7753 also includes an on-chip temperature sensor. A temperature measurement can be made by setting bit 5 in the Mode register. When bit 5 is set logic high in the M[...]

ADE7753 – 15 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA Antialias Filter Antialias Filter Antialias Filter Antialias Filter Antialias Filter Figure 17 also shows an analog low pass filter (RC) on the input to the modulator. This filter is present to prevent aliasing. Aliasing is an artifact of all sampled systems. Basically it means that fre[...]

ADE7753 – 16 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA CHANNEL 1 ADC CHANNEL 1 ADC CHANNEL 1 ADC CHANNEL 1 ADC CHANNEL 1 ADC Figure 21 shows the ADC and signal processing chain for Channel 1. In waveform sampling mode the ADC outputs a signed 2 ’ s Complement 24-bit data word at a maximum of 27.9kSPS (CLKIN/128). The output of the ADC can[...]

ADE7753 – 17 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA CHANNEL 2 ADC CHANNEL 2 ADC CHANNEL 2 ADC CHANNEL 2 ADC CHANNEL 2 ADC Channel 2 Sampling Channel 2 Sampling Channel 2 Sampling Channel 2 Sampling Channel 2 Sampling In Channel 2 waveform sampling mode (MODE[14:13] = 1,1 and WSMP = 1) the ADC output code scaling for Channel 2 is not the [...]

ADE7753 – 18 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA V2P V2N ADC 2 PGA2 1 x1, x2, x4, x8, x16 REFERENCE GAIN[7:5] V2 V1 0V Analog Input Range TO MULTIPLIER -63% to + 63% FS LPF1 20 0000h 4000h C000h 2852h D7AEh + FS - FS + 63% FS - 63% FS LPF Output word Range TO WAVEFORM REGISTER 2518h DAE8h + 59% FS - 59% FS 0.5V, 0.25V, 0.125V, 62.5mV,[...]

ADE7753 – 19 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA 0 111 0 10 5 V2P V2N ADC 2 PGA2 1 V2 24 LPF2 HPF V1P V1N ADC 1 PGA1 V1 24 PHCAL[5:0] Delay Block 1.12 µ s / LSB -35 µ s to +35 µ s V1 V2 60Hz Channel 2 delay reduced by 4.48 µ s (0.1 ⬚ lead at 60Hz) FCh in PHCAL[5:0] V2 V1 0.1 ⬚ 60Hz Figure 27 – Phase Calibration 100 200 300 4[...]

ADE7753 – 20 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA HPF LPF2 Current Signal - i(t) Voltage Signal - v(t) Instantaneous Power Signal - p(t) MULTIPLIER Active Power Signal - P CCCCDh I V 19999Ah 000000h WGAIN[11:0] S + 2 -6 2 -7 APOS[15:0] sgn 2 -8 2 6 2 5 32 24 + For Energy Accumulation For Waveform Sampling 19999h 24 Figure 33 – Active[...]

ADE7753 – 21 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA ENERGY CALCULATION ENERGY CALCULATION ENERGY CALCULATION ENERGY CALCULATION ENERGY CALCULATION As stated earlier, power is defined as the rate of energy flow. This relationship can be expressed mathematically as Equation 5. P= dE dt (5) Where P = Power and E = Energy. Conversely Energy [...]

ADE7753 – 22 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA POWER OFFSET CALIBRATION POWER OFFSET CALIBRATION POWER OFFSET CALIBRATION POWER OFFSET CALIBRATION POWER OFFSET CALIBRATION The ADE7753 also incorporates an Active Power Offset register (APOS[15:0]). This is a signed 2 ’ s complement 16- bit register which can be used to remove offse[...]

ADE7753 – 23 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA t E(t) − R S T U V W VI 4. (1 + 2. / 8.9Hz) sin(4. F F . .. ) ff ft ll l VIt Figure 38 – Output frequency ripple LINE CYCLE ENERGY ACCUMULATION MODE LINE CYCLE ENERGY ACCUMULATION MODE LINE CYCLE ENERGY ACCUMULATION MODE LINE CYCLE ENERGY ACCUMULATION MODE LINE CYCLE ENERGY ACCUMULA[...]

ADE7753 – 24 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA NO LOAD THRESHOLD NO LOAD THRESHOLD NO LOAD THRESHOLD NO LOAD THRESHOLD NO LOAD THRESHOLD The ADE7753 includes a "no load threshold" feature that will eliminate any creep effects in the meter. The ADE7753 accomplishes this by not accumulating energy if the multi- plier output [...]

ADE7753 – 25 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA Reac t i v e Po w er Active Po w er Appa re nt Po w er θ Figure 42 - Power triangle () () θ ω ω + = = t t i t t v sin I 2 ) ( sin V 2 ) ( rms rms (19) ) 2 cos( ) cos( ) ( ) ( ) ( ) ( θ ω θ + − = × = t I V I V t p t i t v t p rms rms rms rms ( 2 0 ) The Apparent Power (AP) is d[...]

ADE7753 – 26 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA 51 0 + + Σ APP ARENT POWER 00000h D1B71h time (nT) T APP ARENT PO WER ARE ACCUMULA TED (INTEGRATED) IN THE APP ARENT ENERGY REGISTER Apparent Power Signal - P T 51 0 V AENERGY[23:0] V ADIV 23 0 Figure 45- ADE7753 Apparent Energy calculation The upper 52-bit of the internal register are[...]

ADE7753 – 27 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA CALIBRATING THE ENERGY METER CALIBRATING THE ENERGY METER CALIBRATING THE ENERGY METER CALIBRATING THE ENERGY METER CALIBRATING THE ENERGY METER Calculating the Average Active Power Calculating the Average Active Power Calculating the Average Active Power Calculating the Average Active [...]

ADE7753 – 28 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA CLKIN FREQUENCY CLKIN FREQUENCY CLKIN FREQUENCY CLKIN FREQUENCY CLKIN FREQUENCY In this datasheet, the characteristics of the ADE7753 is shown with CLKIN frequency equals 3.579545 MHz. However, the ADE7753 is designed to have the same accuracy at any CLKIN frequency within the specified[...]

ADE7753 – 29 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA ADE7753 SERIAL INTERFACE ADE7753 SERIAL INTERFACE ADE7753 SERIAL INTERFACE ADE7753 SERIAL INTERFACE ADE7753 SERIAL INTERFACE All ADE7753 functionality is accessible via several on-chip registers – see Figure 49. The contents of these registers can be updated or read using the on-chip [...]

ADE7753 – 30 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA Figure 52 – Serial Interface Write Timing Diagram Figure 53 — 12 bit Serial Write Operation ADE7753 Serial Read Operation ADE7753 Serial Read Operation ADE7753 Serial Read Operation ADE7753 Serial Read Operation ADE7753 Serial Read Operation During a data read operation from the ADE[...]

ADE7753 – 31 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA ADE7753 REGISTER LIST ADE7753 REGISTER LIST ADE7753 REGISTER LIST ADE7753 REGISTER LIST ADE7753 REGISTER LIST Address Address Address Address Address Name Name Name Name Name R/W R/W R/W R/W R/W # of Bits # of Bits # of Bits # of Bits # of Bits Default Default Default Default Default De[...]

ADE7753 – 32 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA Address Address Address Address Address Name Name Name Name Name R/W R/W R/W R/W R/W # of Bits # of Bits # of Bits # of Bits # of Bits Default Default Default Default Default Description Description Description Description Description 10 h PHCAL R / W 6 bits 0 h Phase Calibration regist[...]

ADE7753 – 33 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA ADE7753 REGISTER DESCRIPTIONS ADE7753 REGISTER DESCRIPTIONS ADE7753 REGISTER DESCRIPTIONS ADE7753 REGISTER DESCRIPTIONS ADE7753 REGISTER DESCRIPTIONS All ADE7753 functionality is accessed via the on-chip registers. Each register is accessed by first writing to the communications registe[...]

ADE7753 – 34 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA Mode Register (09H) Mode Register (09H) Mode Register (09H) Mode Register (09H) Mode Register (09H) The ADE7753 functionality is configured by writing to the MODE register. Table VI below summarizes the functionality of each bit in the MODE register . Table VI : Mode Register Table VI :[...]

ADE7753 – 35 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA Interrupt Status Register (0BH) / Reset Interrupt Status Register (0CH) /Interrupt Enable Register (0Ah) Interrupt Status Register (0BH) / Reset Interrupt Status Register (0CH) /Interrupt Enable Register (0Ah) Interrupt Status Register (0BH) / Reset Interrupt Status Register (0CH) /Inte[...]

ADE7753 – 36 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA OUTLINE DIMENSIONS OUTLINE DIMENSIONS OUTLINE DIMENSIONS OUTLINE DIMENSIONS OUTLINE DIMENSIONS Dimensions shown in inches and (mm) 20 11 10 1 0.295 (7.50) 0.271 (6.90) 0.311 (7.9) 0.301 (7.64) 0.212 (5.38) 0.205 (5.21) PIN 1 SEATING PLANE 0.008 (0.203) 0.002 (0.050) 0.07 (1.78) 0.066 (1[...]

ADE7753 – 37 – REV. PrC 01/02 PRELIMINARY TECHNICAL D A TA ADE7753 ERRATA (REV 1.0) ADE7753 ERRATA (REV 1.0) ADE7753 ERRATA (REV 1.0) ADE7753 ERRATA (REV 1.0) ADE7753 ERRATA (REV 1.0) The following is a list of known issues with the first revision of the ADE7753 silicon (rev 1.0). These issues will be solved in the next version. Samples of this[...]