Datasheet

MAX71020
Single-Chip Electricity Meter AFE
33Maxim Integrated
Figure 10. CE Data Flow (Multiplexer and ADC)
Figure 11. CE Data Flow (Scaling, Gain Control, Intermediate Variables)
MULTIPLEXER DEMULTIPLEXER
V
REF
I0
V0
I1
I0_RAW
V0_RAW
I1_RAW
DC
MOD
DECIMATOR
f
CLK
= 2.458MHz
f
S
= 2520Hz
(ON EACH CHANNEL)
OFFSET
NULL
OFFSET
NULL
OFFSET
NULL
F0
GENERATOR
PHASE
COMP
PHASE
COMP
90°
LPF
LPF
W0
VAR0
I0
V0
I0_RAW
V0_RAW
F0
F0
CAL_I0 PHADJ_0
I1_RAW
F0
CAL_V0
CAL_I1 GAIN_ADJ
LPF W1
I1
F0
LPF
VAR1
PHADJ_1