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HCPL7840 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 HCPL7840
部品説明 Analog Isolation Amplifier
メーカ Agilent(Hewlett-Packard)
ロゴ Agilent(Hewlett-Packard) ロゴ 



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HCPL7840 Datasheet, HCPL7840 PDF,ピン配置, 機能
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

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