ADE7756ARS Analog Devices Inc, ADE7756ARS Datasheet - Page 28

• Manufacturer Part Number: ADE7756ARS
• Description: IC ENERGY METERING 1PHASE 20SSOP
• Manufacturer: Analog Devices Inc

Specifications of ADE7756ARS

• Rohs Status: RoHS non-compliant
• Input Impedance: 390 KOhm
• Measurement Error: 0.1%
• Voltage - I/o High: 2.4V
• Voltage - I/o Low: 0.8V
• Current - Supply: 3mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP (0.200", 5.30mm Width)
• Meter Type: Single Phase
• Lead Free Status / RoHS Status: Not Compliant

ADE7756
Address
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
Name
Not Used
WAVEFORM
AENERGY
RSTENERGY
STATUS
RSTSTATUS
MODE
CFDIV
CH1OS
CH2OS
GAIN
APGAIN
PHCAL
APOS
ZXTOUT
SAGCYC
R/W
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
No. of
Bits
24
40
40
8
8
16
12
6
6
8
12
6
12
12
8
Default
0h
0h
0h
0h
0h
000Ch
3Fh
0h
0h
0h
0h
0h
8h
FFFFh
FFh
Table IV. Register List
Zero-Cross Time Out. If no zero crossings are detected on Channel 2
Description
No Operation.
The Waveform register is a 24 bit read-only register. This register
contains the sampled waveform data from either Channel 1, Channel 2
or the Active Power signal. The data source is selected by data bits 14
and 13 in the Mode Register—see Channel 1 and 2 Sampling sections.
The Active Energy Register. Active Power is accumulated (Integrated)
over time in this 40-bit, read-only register. The energy register can hold a
minimum of 6 seconds of Active Energy information with full-scale
analog inputs before it overflows—see Energy Calculation section.
Same as the Active Energy register except that the register is reset to
zero following a read operation
The Interrupt Status Register. This is an 8-bit read-only register. The
Status Register contains information regarding the source of ADE7756
interrupts—see Interrupts section.
Same as the Interrupt Status register except that the register contents
are reset to zero (all flags cleared) after a read operation.
The Mode Register. This is a 16-bit register through which most of the
ADE7756 functionality is accessed. Signal sample rates, filter enabling
and calibration modes are selected by writing to this register. The contents
may be read at any time—see Mode Register section.
The Frequency Divider Register. This is a 12-bit read/write register.
The output frequency on the CF pin is adjusted by writing to this
register—see Energy to Frequency Conversion section.
Channel 1 Offset Adjust. Writing to this 6-bit register allows any off-
sets on Channel 1 to be removed—see Analog Inputs section.
Channel 2 Offset Adjust. Writing to this 6-bit register allows any off-
sets on Channel 2 to be removed—see Analog Inputs section.
PGA Gain Adjust. This 8-bit register is used to adjust the gain selec-
tion for the PGA in Channel 1 and Channel 2—Analog Inputs section.
Active Power Gain Adjust. This is a 12-bit register. The Active Power
calculation can be calibrated by writing to this register. The calibration
range is ± 50% of the nominal full scale active power. The resolution
of the gain adjust is 0.0244%/LSB—see Channel 1 ADC Gain
Adjust section.
Phase Calibration Register. The phase relationship between Channel 1
and Channel 2 can be adjusted by writing to this 6-bit register. The
adjustment range is approximately ± 3.1° at 60 Hz in 0.097° steps—see
Phase Compensation section.
Active Power Offset Correction. This 12-bit register allows small off-
sets in the Active Power Calculation to be removed—see Active Power
Calculation section.
within a time period specified by this 12-bit register, the interrupt
request line (IRQ) will be activated. The maximum time-out period is
0.15 second—see Zero Crossing Detection section.
Sag Line Cycle Register. This 8-bit register specifies the number of
consecutive half line cycles the signal on Channel 2 must be below
SAGLVL before the SAG output is activated—see Voltage Sag Detec-
tion section. It is also used during calibration mode to set the number
of line cycles Active power is accumulated for Energy calibration—see
Energy Calibration section.