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| 型號(hào)： | ADE7752BARWZ-RL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | Polyphase Energy Metering IC with Pulsed Output |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封裝： | LEAD FREE, MS-013AD, SOIC-24 |
| 文件頁(yè)數(shù)： | 18/27頁(yè) |
| 文件大小： | 342K |
| 代理商： | ADE7752BARWZ-RL |
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ADE7752B
Preliminary Technical Data
POWER SUPPLY MONITOR
The ADE7752B contains an on-chip power supply monitor. The
power supply (V
DD
) is monitored continuously by the ADE7752B.
At power up, when the supply is less than 4V ±2% and V
REF
is less
than 1.9 V (typ), the outputs of the ADE7752B are inactive and
the data path is held in reset. Once V
DD
is greater than 4V ±2%
and V
REF
is greater than 1.9 V (typ), the chip is active and energy
accumulation begins. At power-down, when V
DD
falls below 4 V
or V
REF
falls below 1.9 V (typ), the data path is again held in reset.
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.
Rev. PrA | Page 18 of 27
The power supply and decoupling for the part should be such
that the ripple at V
DD
does not exceed ±5% as specified for
normal operation.
V
DD
V
REF
5V
4V
0V
INTERNAL
RESET
ACTIVE
INACTIVE
0
2.4V
1.9V
INACTIVE
Figure 23. On-Chip Power Supply Monitor
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