ADE7762 Ver la hoja de datos (PDF) - Analog Devices

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ADE7762

Polyphase Energy Metering IC with Phase Drop Indication

Analog Devices 

Preliminary Technical Data

ADE7762

TIMING CHARACTERISTICS

VDD = 5 V ± 5%, AGND = DGND = 0 V, on-chip reference, CLKIN = 10 MHz, TMIN to TMAX = −40°C to +85°C, unless otherwise noted.

Table 2.

Parameter 1 , 2

t1 3

t2

Conditions

F1 and F2 pulse width (logic high)

Output pulse period (see the Transfer Function section)

Specification Unit

120

ms

See Figure 2 sec

t3

Time between F1 falling edge and F2 falling edge

1/2 t2

sec

t43, 4

CF pulse width (logic high)

90

ms

t5 5

CF pulse period (see the Transfer Function section)

See Table 7 sec

t6

Minimum time between F1 and F2 pulse

4/CLKIN

sec

t7

LED_CTRL pulse width

28.8

μs

t8

LED_CTRL period

57.5

μs

t9

LED pulse width

7.2

μs

1 Sample tested during initial release and after any redesign or process changes that might affect this parameter.

2 See Figure 2.

3 The pulse widths of F1, F2, and CF are not fixed for higher output frequencies (see the Frequency Outputs section).

4 CF is not synchronous to F1 or F2 frequency outputs.

5 The CF pulse is always 1 μs in the high frequency mode (see the Frequency Outputs section).

t1

F1

t6

t2

F2

t3

t4

t5

CF

Figure 2. Timing Diagram for Frequency Outputs

t8

t7

t9

Figure 3: Timing Diagram for LED Drivers

Rev. PrB | Page 5 of 28

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