參數(shù)資料
型號： AD7755(中文)
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量芯片)
中文描述： 電能計量IC脈沖輸出（帶脈沖輸出的高精度電子能量測量芯片）
文件頁數(shù)： 5/19頁
文件大?。?/td> 447K
代理商： AD7755(中文)
==99-11-12==
P&S
ooá|′μ×ó1é· YóDT1
==19-5==
2. 2 ìD2 êy
￡¨
AV
DD
=DV
DD
=5V
à
5%
￡
AGND=DGND=0V
￡úù×￡
CLKIN=3.58MHz
￡
T
MIN
á
T
MAX
=-40
á
+85
￡
Parameter
A Version
B Version
Units
P &S
oo á|′μ×ó1é· YóDT1
μ :
ot±±ooêD×μèa· 15o
D :
ooêD70020D
óê±à:
430079
μ°:
( 86) ( 027￡87493500 87493506
′
( 86) ( 027) 87491166, 87493497
P &S
í í :
http://www.p8s.com
1 ￠4
Test Conditions/Comments
ACCURACY
1, 2
Measurement Error
1
on Channel 1
Gain = 1
Gain = 2
Gain = 8
Gain = 16
Phase Error
1
Between Channels
V1 Phase Lead 37
(PF = 0.8 Capacitive)
V1 Phase Lag 60
(PF = 0.5 Inductive)
AC Power Supply Rejection
1
Output Frequency Variation (CF)
Channel 2 with Full-Scale Signal 660mV), +25 C
% Reading typ Over a Dynamic Range 500 to 1
% Reading typ Over a Dynamic Range 500 to 1
% Reading typ Over a Dynamic Range 500 to 1
% Reading typ Over a Dynamic Range 500 to 1
Line Frequency 45 Hz to 65 Hz
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Degrees( ) max AC/
= 0 and AC/
DC
= 1
0.1
0.1
Degrees( ) max AC/
= 0 and AC/
= 1, S0 = S1 = 1, G0 = G1 = 0
DC
= 1
AC/
0.01
0.01
% Reading typ V1 = 100 mV rms, V2 = 100 mV rms, @ 50Hz
Ripple on AV
of 200 mV rms @ 100 Hz
AC/
= 1, S0 = S1 = 1, G0 = G1 = 0
% Reading typ V1 = 100 mV rms, V2 = 100 mV rms,
AV
DD
= AV
DD
= 5 V 250 mV
DC Power Supply Rejection
1
Output Frequency Variation (CF)
0.01
0.01
ANALOG INPUTS
Maximum Signal Levels
Input Impedance (DC)
Bandwidth ( 3 dB)
ADC Offset Error
1, 2
Gain Error
1
See Analog Inputs Section
V1P, V1N, V2N and V2P to AGND
CLKIN = 3.58 MHz
CLKIN/256, CLKIN = 3.58 MHz
See Terminology and
External 2.5 V Reference, Gain = 1
V1 = 470 mV dc, V2 = 660 mV dc
External 2.5 V Reference
1
1
V max
k min
kHz typ
mV max
% Ideal typ
400
14
15
4
400
14
15
4
Gain Error Match
1
0.2
0.2
% Ideal typ
REFERENCE INPUT
REF
IN/OUT
Input Voltage Range
2.7
2.3
3.7
10
2.7
2.3
3.7
10
V max
V min
k min
pF max
2.5 V + 8%
2.5 V 8%
Input Impedance
Input Capacitance
ON-CHIP REFERENCE
Reference Error
Temperature Coefficient
Nominal 2.5 V
200
30
200
30
60
mV max
ppm/ C typ
ppm/ C max
CLKIN
Input Clock Frequency
Note All Specifications for CLKIN of 3.58 MHz
4
1
4
1
MHz max
MHz min
LOGIC INPUTS
3
SCF, S0, S1, AC/
RESET
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN
LOGIC OUTPUTS
3
F1 and F2
Output High Voltage, V
OH
,
, G0 and G1
2.4
0.8
3
10
2.4
0.8
3
10
V min
V max
A max
pF max
DV
DD
= 5 V 5%
DV
= 5 V 5%
Typically 10 nA, V
IN
= 0 V to DV
DD
I
SOURCE
= 10 mA
DV
DD
= 5 V
I
= 10 mA
DV
DD
= 5 V
4.5
4.5
V min
Output Low Voltage, V
OL
0.5
0.5
V max
CF and REVP
Output High Voltage, V
OH
I
SOURCE
= 5 mA
DV
DD
= 5 V
I
SINK
= 5 mA
DV
DD
= 5 V
4
4
V min
Output Low Voltage, V
OL
0.5
0.5
V max
DC
DC
DC
DC
DC
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