參數(shù)資料
型號(hào): AD7755
廠商: Analog Devices, Inc.
英文描述: Energy Metering IC with Pulse Output(帶脈沖輸出的高精度電子能量測(cè)量芯片)
中文描述: 電能計(jì)量IC脈沖輸出(帶脈沖輸出的高精度電子能量測(cè)量芯片)
文件頁(yè)數(shù): 3/14頁(yè)
文件大?。?/td> 260K
代理商: AD7755
PRELIMINARY TECHNICAL DATA
AD7755
3
PRELIM B2 10/98
AD7755 TIMING CHARACTERISTICS
1,2
Parameter
B Versions
Units
Test Conditions/Comments
t
1
t
2
t
3
t
4
t
5
t
6
3
275
See Table 1
t
2
90
See Table 1
CLKIN/4
ms
s
s
ms
s
s
F1 and F2 pulse width (logic low)
Output pulse period. See Table 1 to determine the output frequency
Time between F1 falling edge and F2 falling edge
CF pulse width (logic high)
CF pulse period, See Table 1 to determine the output frequency
Minimum time Between F1 and F2 Pulse
3
NOTES
1
Sample tested during initial release and after any redesign or process change that may affect this parameter.
2
See Figure 7.
3
The Pulse widths of F1, F2 and CF are not fixed for higher output frequencies. See Frequency Outputs
Model
Package Option*
AD7755BN
AD7755BRS
N-24
RS-24
* N = Plastic DIP; RS = Shrink Small Outline Package
ORDERING GIUDE
(AV
DD
= DV
DD
= 5V ± 5%, AGND = DGND = 0V, On-Chip Reference,
CLKIN = 3.58MHz, TMIN to TMAX = -40°C to +85°C)
B Version
-40°C to +85°C
Parameter
Units
Test Conditions/Comments
POWER SUPPLY
AV
DD
For specified Performance
5V - 5%
5V +5%
5V - 5%
5V +5%
Typically 1.5 mA
Typically 1.5 mA
4.75
5.25
4.75
5.25
3
2
V min
V max
V min
V max
mA max
mA max
DV
DD
AI
DD
DI
DD
NOTES:
1
See Terminology Section for explaination of Specifications
2
Fault Detection Section of data sheet for explanation of fault detection functionality
3
See Plots in Typical Performance Graphs
4
Specifications subject to change without notice
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