Selecting Frequency of E1 and E2
Description (revision B3)
Frequency of Pulse out is determined as described in data sheet.
Change (revision C)
Frequency of Pulse out is determined as follows:
Frequency Select
Maximum Frequency for a Sine Wave (Notes 1, 2)
FREQ2
FREQ1
FREQ0
E1 or E2
E1+E2
FOUT
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0.125 Hz
0.25 Hz
0.5Hz
1.0 Hz
1.0 Hz
0.25 Hz
0.5 Hz
1.0 Hz
0.25 Hz
0.5 Hz
1.0 Hz
2.0 Hz
2.0 Hz
0.5 Hz
1.0 Hz
2.0 Hz
64x(E1+E2)
32x(E1+E2)
16x(E1+E2)
2048x(E1+E2)
8x(E1+E2)
64x(E1+E2)
32x(E1+E2)
16x(E1+E2)
16 Hz
16 Hz
16 Hz
4,096 Hz
16 Hz
32 Hz
32 Hz
32 Hz
Notes:
1 A pure sinusoidal input with zero phase shift is applied to the voltage and current channel.
2 MCLK = 4.096 MHz
Table 1. Maximum Frequency for E1, E2, and FOUT
Frequency Select
Absolute Maximum Frequency
(Note 1)
FREQ2
0
0
0
0
1
1
1
1
FREQ1
0
0
1
1
0
0
1
1
FREQ0
0
1
0
1
0
1
0
1
E1 or E2
0.25 Hz
0.5Hz
1.0 Hz
2.0 Hz
2.0 Hz
0.5Hz
1.0 Hz
2.0 Hz
E1+E2
0.5 Hz
1.0 Hz
2.0 Hz
4.0 Hz
4.0 Hz
1.0 Hz
2.0 Hz
4.0 Hz
ER659C1
Notes:
1. MCLK = 4.096 MHz
Table 2. Absolute Maximum Frequency for E1 and E2
3
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