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부품번호 | HCPL7840 기능 |
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기능 | Analog Isolation Amplifier | ||
제조업체 | Agilent(Hewlett-Packard) | ||
로고 | |||
전체 12 페이지수
Analog Isolation Amplifier
Technical Data
H
HCPL-7840
Features
• High Common Mode
Rejection (CMR): 15 kV/µs
at VCM = 1000 V
• 5% Gain Tolerance
• 0.1% Nonlinearity
• Low Offset Voltage and Off-
set Temperature Coefficient
• 100 kHz Bandwidth
• Performance Specified Over
-40°C to 85°C Temperature
Range
• Recognized Under UL 1577
and CSA Approved for
Dielectric Withstand Proof
Test Voltage of 2500 Vac, 1
Minute
• Standard 8-Pin DIP Package
Applications
• Motor Phase and Rail
Current Sensing
• Inverter Current Sensing
• Switched Mode Power
Supply Signal Isolation
• General Purpose Current
Sensing and Monitoring
• General Purpose Analog
Signal Isolation
Description
The HCPL-7840 isolation ampli-
fier provides accurate, electrically
isolated and amplified representa-
tions of voltage and current.
When used with a shunt resistor
in the current path, the HCPL-
7840 offers superior reliability,
cost effectiveness, size and
autoinsertability compared with
the traditional solutions such as
current transformers and Hall-
effect sensors.
The HCPL-7840 consists of a
sigma-delta analog-to-digital
converter optically coupled to a
digital-to-analog converter.
Superior performance in design
critical specifications such as
common-mode rejection, offset
voltage, nonlinearity, operating
temperature range and regulatory
compliance make the HCPL-7840
the clear choice for designing
reliable, lower-cost, reduced-size
products such as motor
controllers and inverters.
environments such as those
generated by the high switching
rates of power IGBTs.
Low offset voltage together with
a low offset voltage temperature
coefficient permits accurate use
of auto-calibration techniques.
Gain tolerance of 5% with 0.1%
nonlinearity further provide the
performance necessary for
accurate feedback and control.
A wide operating temperature
range with specified performance
allows the HCPL-7840 to be used
in hostile industrial environments.
Functional Diagram
IDD1
VDD1 1
IDD2
8 VDD2
VIN+ 2
VIN– 3
+
–
+ 7 VOUT+
– 6 VOUT–
GND1 4
SHIELD
5 GND2
Common-mode rejection of
15 kV/µs makes the HCPL-7840
suitable for noisy electrical
A 0.1 F bypass capacitor must be connected between pins 1 and 4 and between pins 5 and 8.
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to
prevent damage and/or degradation which may be induced by ESD.
1-248
5965-4784E
Recommended Operating Conditions
Parameter
Ambient Operating Temperature
Supply Voltages
Input Voltage
Symbol
TA
VDD1, VDD2
VIN+,VIN-
Min.
-40
4.5
-200
Max.
85
5.5
200
Unit
°C
V
mV
Note
1
DC Electrical Specifications
All specifications, typicals and figures are at the nominal operating conditions of VIN+ = 0 V, VIN- = 0 V,
TA = 25°C, VDD1 = 5 V and VDD2 = 5 V, unless otherwise noted.
Parameter
Symbol Min. Typ. Max. Unit
Test Conditions
Fig. Note
Input Offset Voltage
Gain
200 mV Nonlinearity
100 mV Nonlinearity
Maximum Input Voltage
Before Output Clipping
VOS -1.2 -0.2 1.0 mV
1
-3.0 -0.2 2.0
-40°C ≤ TA ≤ 85°C
1,2,3
4.5 ≤ (VDD1, VDD2) ≤ 5.5 V
G 7.60 8.00 8.40 V/V -200 ≤ VIN+ ≤ 200 mV
5
7.44 8.00 8.56
-200 ≤ VIN+ ≤ 200 mV
5,6,7
-40°C ≤ TA ≤ 85°C
4.5 ≤ (VDD1, VDD2) ≤ 5.5 V
NL200
0.1 0.2 % -200 ≤ VIN+ ≤ 200 mV
5, 8
0.4
-200 ≤ VIN+ ≤ 200 mV
5,8,9
-40°C ≤ TA ≤ 85°C
10,12
4.5 ≤ (VDD1, VDD2) ≤ 5.5 V
NL100
0.05 0.1
-100 ≤ VIN+ ≤ 100 mV
5, 8
0.2
-100 ≤ VIN+ ≤ 100 mV
5,8,9
-40°C ≤ TA ≤ 85°C
11,12
4.5 ≤ (VDD1, VDD2) ≤ 5.5 V
|VIN+|MAX 320 mV
4
2
3
Average Input Bias Current
Average Input Resistance
Input DC Common-Mode
Rejection Ratio
IIN
RIN
CMRRIN
-0.57
480
69
µA
kΩ
dB
13 4
5
Output Resistance
Output Low Voltage
Output High Voltage
Output Common-Mode
Voltage
Input Supply Current
Output Supply Current
Output Short-Circuit Current
RO
VOL
VOH
VOCM
IDD1
IDD2
|IOSC|
1Ω
1.28
V VIN+ = 400 mV
4
3.84
V VIN+ = -400 mV
2.20 2.56 2.80 V -400 < VIN+ < 400 mV
-40°C ≤ TA ≤ 85°C
8.7 15.5 mA 4.5 ≤ (VDD1, VDD2) ≤ 5.5 V 14
8.8 14.5 mA
15
11 mA VOUT = 0 V or VDD2
6
7
1-251
4페이지 VDD1
404
VIN
0.1 µF
13.2
0.01 µF
1
2
3
4
HCPL-7840
VDD2
8
0.1 µF
7 10 K
6 10 K
5 0.47
µF
Figure 5. Gain and Nonlinearity Test Circuit.
+15 V
0.1 µF
+15 V
0.1 µF
+
– AD624CD
GAIN = 4
0.47
µF
0.1 µF
-15 V
10 K
0.47
µF
+
– AD624CD
GAIN = 10
VOUT
0.1 µF
-15 V
0.1
0
-0.1
-0.2
-0.3
VDD1 = 5 V
-0.4 VDD2 = 5 V
-0.5
-40 -20 0 20 40 60 80 100
TA – TEMPERATURE – °C
Figure 6. Gain Change vs.
Temperature.
0.10
0.08
0.06
0.04
vs. VDD1 (VDD2 = 5 V)
vs. VDD2 (VDD1 = 5 V)
TA = 25°C
0.02
0
-0.02
-0.04
-0.06
4.4
4.6 4.8 5.0 5.2 5.4
VDD – SUPPLY VOLTAGE – V
5.6
Figure 7. Gain Change vs. VDD1 and
VDD2.
0.15
200 mV ERROR
0.10
0.05
100 mV ERROR
VDD1 = 5 V
VDD2 = 5 V
VIN– = 0 V
TA = 25°C
0
-0.05
-0.10
-0.2
-0.1 0
0.1
VIN+ – INPUT VOLTAGE – V
0.2
Figure 8. Nonlinearity Error Plot vs.
Input Voltage.
0.20
200 mV NL
100 mV NL
0.15
0.10
0.05
VDD1 = 5 V
VDD2 = 5 V
VIN– = 0 V
TA = 25 °C
0.12
0.11
0.10
0.09
vs. VDD1 (VDD2 = 5 V)
vs. VDD2 (VDD1 = 5 V)
TA = 25°C
0.060
0.055
0.050
0.045
vs. VDD1 (VDD2 = 5 V)
vs. VDD2 (VDD1 = 5 V)
TA = 25°C
0
-40 -20 0 20 40 60 80 100
TA – TEMPERATURE – °C
Figure 9. Nonlinearity vs.
Temperature.
0.08
4.4
4.6 4.8 5.0 5.2 5.4
VDD – SUPPLY VOLTAGE – V
5.6
Fibure 10. 200 mV Nonlinearity vs.
VDD1 and VDD2.
0.040
4.4 4.6 4.8 5.0 5.2 5.4 5.6
VDD – SUPPLY VOLTAGE – V
Figure 11. 100 mV Nonlinearity vs.
VDD1 and VDD2.
1-254
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부품번호 | 상세설명 및 기능 | 제조사 |
HCPL7840 | Analog Isolation Amplifier | Agilent(Hewlett-Packard) |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |