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AD7755AAN 데이터시트(PDF) 2 Page - Analog Devices

부품명 AD7755AAN
상세설명  Energy Metering IC with Pulse Output
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
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AD7755AAN 데이터시트(HTML) 2 Page - Analog Devices

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REV. B
–2–
AD7755–SPECIFICATIONS
(AVDD = DVDD = 5 V
5%, AGND = DGND = 0 V, On-Chip Reference, CLKIN = 3.58 MHz,
TMIN to TMAX = –40 C to +85 C)
Parameter
A Version
B Version
Unit
Test Conditions/Comments
ACCURACY
1, 2
Measurement Error
1 on Channel 1
Channel 2 with Full-Scale Signal (
±660 mV), 25°C
Gain = 1
0.1
0.1
% Reading typ
Over a Dynamic Range 500 to 1
Gain = 2
0.1
0.1
% Reading typ
Over a Dynamic Range 500 to 1
Gain = 8
0.1
0.1
% Reading typ
Over a Dynamic Range 500 to 1
Gain = 16
0.1
0.1
% Reading typ
Over a Dynamic Range 500 to 1
Phase Error
1 Between Channels
Line Frequency = 45 Hz to 65 Hz
V1 Phase Lead 37
°
(PF = 0.8 Capacitive)
±0.1
±0.1
Degrees(
°) max AC/DC = 0 and AC/DC = 1
V1 Phase Lag 60
°
(PF = 0.5 Inductive)
±0.1
±0.1
Degrees(
°) max AC/DC = 0 and AC/DC = 1
AC Power Supply Rejection
1
AC/
DC = 1, S0 = S1 = 1, G0 = G1 = 0
Output Frequency Variation (CF)
0.2
0.2
% Reading typ
V1 = 100 mV rms, V2 = 100 mV rms, @ 50 Hz
Ripple on AVDD of 200 mV rms @ 100 Hz
DC Power Supply Rejection
1
AC/
DC = 1, S0 = S1 = 1, G0 = G1 = 0
Output Frequency Variation (CF)
±0.3
±0.3
% Reading typ
V1 = 100 mV rms, V2 = 100 mV rms,
AVDD = DVDD = 5 V
± 250 mV
ANALOG INPUTS
See Analog Inputs Section
Maximum Signal Levels
± 1
± 1
V max
V1P, V1N, V2N and V2P to AGND
Input Impedance (DC)
390
390
k
Ω min
CLKIN = 3.58 MHz
Bandwidth (–3 dB)
14
14
kHz typ
CLKIN/256, CLKIN = 3.58 MHz
ADC Offset Error
1, 2
±25
±25
mV max
Gain = 1, See Terminology and Performance Graphs
Gain Error
1
± 7
± 7
% Ideal typ
External 2.5 V Reference, Gain = 1
V1 = 470 mV dc, V2 = 660 mV dc
Gain Error Match
1
±0.2
±0.2
% Ideal typ
External 2.5 V Reference
REFERENCE INPUT
REFIN/OUT Input Voltage Range
2.7
2.7
V max
2.5 V + 8%
2.3
2.3
V min
2.5 V – 8%
Input Impedance
3.2
3.2
k
Ω min
Input Capacitance
10
10
pF max
ON-CHIP REFERENCE
Nominal 2.5 V
Reference Error
±200
±200
mV max
Temperature Coefficient
±30
±30
ppm/
°C typ
±60
ppm/
°C max
CLKIN
Note All Specifications for CLKIN of 3.58 MHz
Input Clock Frequency
4
4
MHz max
1
1
MHz min
LOGIC INPUTS
3
SCF, S0, S1, AC/
DC,
RESET, G0 and G1
Input High Voltage, VINH
2.4
2.4
V min
DVDD = 5 V
± 5%
Input Low Voltage, VINL
0.8
0.8
V max
DVDD = 5 V
± 5%
Input Current, IIN
± 3
± 3
µA max
Typically 10 nA, VIN = 0 V to DVDD
Input Capacitance, CIN
10
10
pF max
LOGIC OUTPUTS
3
F1 and F2
Output High Voltage, VOH
ISOURCE = 10 mA
4.5
4.5
V min
DVDD = 5 V
Output Low Voltage, VOL
ISINK = 10 mA
0.5
0.5
V max
DVDD = 5 V
CF and REVP
Output High Voltage, VOH
ISOURCE = 5 mA
4
4
V min
DVDD = 5 V
Output Low Voltage, VOL
ISINK = 5 mA
0.5
0.5
V max
DVDD = 5 V


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