Rainbow Electronics MAX1314 User Manual
Page 31
MAX1304–MAX1306/MAX1308–MAX1310/MAX1312–MAX1314
8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
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31
3-Phase Power-Monitoring System
The 8-channel devices are well suited for use in
3-phase power monitoring (Figure 16). The simultane-
ously sampled eight channels eliminate the need for
complicated DSP algorithms that realign sequentially
sampled data into a simultaneous sample set.
12-BIT
ADC
MICROCONTROLLER
LOAD
I
P1
I
P2
I
P3
V
P2
PHASE 1
NEUTRAL
PHASE 2
PHASE 3
V
P1
V
NEUTRAL
V
P3
BUFFERS
AND INPUT
PROTECTION
I
Pn
T/H
CURRENT
TRANSFORMER
CURRENT
TRANSFORMER
CURRENT
TRANSFORMER
CURRENT
TRANSFORMER
POWER
GRID
MAX1312
LOAD
LOAD
Figure 16. 3-Phase Power Monitoring