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ADE7761

Energy Metering IC with On-Chip Fault and Missing Neutral Detection

Analog Devices 

ADE7761

TIMING CHARACTERISTICS

VDD = 5 V ± 5%, AGND = DGND = 0 V, on-chip reference, on-chip oscillator, TMIN to TMAX = –40°C to +85°C.

Sample tested during initial release and after any redesign or process change that may affect this parameter.

See Figure 2.

Table 2.

Parameter

Value

Unit Test Conditions/Comments

t11

120

ms

F1 and F2 Pulse Width (Logic High).

t2

See Table 6

s

Output Pulse Period. See the Transfer Function section.

t3

1/2 t2

s

Time between F1 Falling Edge and F2 Falling Edge.

t41

90

ms

CF Pulse Width (Logic High).

t5

See Table 7

s

CF Pulse Period. See the Transfer Function section.

t6

CLKIN/4

s

Minimum Time between F1 and F2 Pulse.

1 The pulse widths of F1, F2, and CF are not fixed for higher output frequencies. See the Transfer Function section.

E t1

T F1

F2

E t4

CF

t6

t2

t3

t5

OBSOL Figure 2. Timing Diagram for Frequency Outputs

Rev. A | Page 6 of 28

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