ADE7752BARW AD [Analog Devices], ADE7752BARW Datasheet - Page 18

• Manufacturer Part Number: ADE7752BARW
• Description: Polyphase Energy Metering IC with Pulsed Output
• Manufacturer: AD [Analog Devices]

ADE7752B
POWER SUPPLY MONITOR
The ADE7752B contains an on-chip power supply monitor. The
power supply (V
At power up, when the supply is less than 4V ±2% and V
than 1.9 V (typ), the outputs of the ADE7752B are inactive and
the data path is held in reset. Once V
and V
accumulation begins. At power-down, when V
or V
This implementation ensures correct device operation at power-
up and at power-down. The power supply monitor has built-in
hysteresis and filtering. This gives a high degree of immunity to
false triggering due to noisy supplies.
The power supply and decoupling for the part should be such
that the ripple at V
normal operation.
REF
REF
falls below 1.9 V (typ), the data path is again held in reset.
is greater than 1.9 V (typ), the chip is active and energy
DD
) is monitored continuously by the ADE7752B.
DD
does not exceed ±5% as specified for
DD
is greater than 4V ±2%
DD
falls below 4 V
REF
is less
Rev. PrA | Page 18 of 27
INTERNAL
RESET
2.4V
1.9V
5V
4V
0V
INACTIVE
Figure 23. On-Chip Power Supply Monitor
Preliminary Technical Data
ACTIVE
V
V
DD
REF
INACTIVE