ADE7566 datasheet(49/144 Pages) AD

49 / 144 page

ADE7566/ADE7569/ADE7166/ADE7169

Rev. A | Page 49 of 144

PGA1

ADC

IPA

IBP

REFERENCE

IBGAIN

×1, ×2, ×4

×8, ×16

{GAIN[2:0]}

HPF

DIGITAL

INTEGRATOR*

MODE 1[5]

CURRENT RMS (Irms)

CALCULATION

WAVEFORM SAMPLE

ACTIVE AND REACTIVE

POWER CALCULATION

ANALOG

INPUT

RANGE

0.25V, 0.125V,

62.5mV, 31.3mV

CURRENT CHANNEL

WAVEFORM

DATA RANGE

0x28F5C2

0x000000

0xD70A3E

CURRENT CHANNEL

WAVEFORM

DATA RANGE AFTER

INTEGRATOR (50Hz)

0x342CD0

0x000000

0xCBD330

CURRENT CHANNEL

WAVEFORM

DATA RANGE AFTER

INTEGRATOR (60Hz)

0x2B7850

0x000000

0xD487B0

60Hz

50Hz

*WHEN DIGITAL INTEGRATOR IS ENABLED, FULL-SCALE OUTPUT DATA IS ATTENUATED

DEPENDING ON THE SIGNAL FREQUENCY BECAUSE THE INTEGRATOR HAS A –20dB/DECADE

FREQUENCY RESPONSE. WHEN DISABLED, THE OUTPUT IS NOT FURTHER ATTENUATED.

PGA1

ADC

HPF

Figure 46. ADC and Signal Processing in Current Channel with PGA1 = 2, 4, 8, or 16 for ADE7166 and ADE7169

ANALOG

INPUT

RANGE

HPF

ADC

REFERENCE

0.5V, 0.25V,

0.125V, 62.5mV,

31.3mV

VOLTAGE RMS (Vrms)

CALCULATION

PGA2

VOLTAGE CHANNEL

WAVEFORM

DATA RANGE

0xD70B

0x0000

0x28F5

ACTIVE AND REACTIVE

POWER CALCULATION

LPF1

f–3dB = 63.7Hz

MODE 1[6]

ZX SIGNAL

DATA RANGE FOR 60Hz SIGNAL

0xE230

0x0000

0x1DD0

ZX DETECTION

ZX SIGNAL

DATA RANGE FOR 50Hz SIGNAL

0xDFC9

0x0000

0x2037

VOLTAGE PEAK DETECT

×1, ×2, ×4,

×8, ×16

{GAIN[7:5]}

WAVEFORM SAMPLE

*WHEN DIGITAL INTEGRATOR IS ENABLED, FULL-SCALE OUTPUT DATA IS ATTENUATED

DEPENDING ON THE SIGNAL FREQUENCY BECAUSE THE INTEGRATOR HAS A –20dB/DECADE

FREQUENCY RESPONSE. WHEN DISABLED, THE OUTPUT IS NOT FURTHER ATTENUATED.

Figure 47. ADC and Signal Processing in Voltage Channel

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