FS7755-IS datasheet(9/22 Pages) FORTUNE

tên linh kiện	FS7755-IS

Giải thích chi tiết về linh kiện	Energy Metering IC with Impulse Output

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nhà sản xuất	FORTUNE [Fortune Semiconductor Corp.]

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9 / 22 page

FS7755

Rev. 1.1

9/22

11.

Timing Characteristics1, 2

(AVDD = DVDD = 5V±5%, AGND = DGND = 0V, On-Chip Reference, CLKIN = 3.579545MHz, Tmin to Tmax

= –40℃ to +85℃.)

Parameter

Specifications

Unit

Test Conditions/Comments

275

F1 and F2 Pulse width (Logic Low)

See Table Ⅲ

sec

Output Pulse Period. See Transfer Function section.

1/2 t2

sec

Time between F1 Falling Edge and F2 Falling Edge.

3, 4

CF Pulse Width (Logic High).

See Table Ⅳ

sec

CF Pulse Period. See Transfer Function section.

CLKIN/4

sec

Minimum Time between F1 and F2 Pulse.

Note:

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

2See Fig4.

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

4The CF pulse is always 18μs in the high frequency mode. See Frequency Outputs section and Table Ⅳ.

Specifications subject to change without notice.

Fig4 Timing Characteristics for Impulse Output

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