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HCPL-7800 Datasheet دیتاشیت PDF دانلود

دیتاشیت - Avago - Isolation Amplifer

شماره قطعه HCPL-7800
شرح مفصل Isolation Amplifer
تولید کننده Avago 
آرم Avago 


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HCPL-7800 شرح
HCPL-7800A/HCPL-7800
Isolation Amplifer
Datasheet
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Description
The HCPL-7800(A) isolation amplifier family was designed
for current sensing in electronic motor drives. In a typical
implementation, motor currents flow through an external
resistor and the resulting analog voltage drop is sensed
by the HCPL-7800(A). A differential output voltage is
created on the other side of the HCPL-7800(A) optical
isolation barrier. This differential output voltage is pro-
portional to the motor current and can be converted to
a single-ended signal by using an op-amp as shown in
the recommended application circuit. Since common-
mode voltage swings of several hundred volts in tens of
nanoseconds are common in modern switching inverter
motor drives, the HCPL-7800(A) was designed to ignore
very high common-mode transient slew rates (of at least
10 kV/µs).
The high CMR capability of the HCPL-7800(A) isolation
amplifier provides the precision and stability needed to
accurately monitor motor current in high noise motor
control environ-ments, providing for smoother control
(less “torque ripple”) in various types of motor control
applications.
The product can also be used for general analog signal
isolation applications requiring high accuracy, stability,
and linearity under similarly severe noise con-ditions.
For general applications, we recommend the HCPL-7800
(gain tolerance of ±3%). For precision applications Avago
Technologies offers the HCPL-7800A with part-to-part
gain tolerance of ±1%. The HCPL-7800(A) utilizes sigma
delta (Σ−∆) analog-to-digital converter technology,
chopper stabilized amplifiers, and a fully differential
circuit topology.
Together, these features deliver unequaled isolation-
mode noise rejection, as well as excellent offset and
gain accuracy and stability over time and temperature.
This performance is delivered in a compact, auto-insert-
able, industry standard 8-pin DIP package that meets
worldwide regulatory safety standards. (A gull-wing
surface mount option #300 is also available).
Features
15 kV/µs Common-Mode Rejection at VCM = 1000 V
Compact, Auto-Insertable Standard 8-pin DIP Pack-
age
0.00025 V/V/°C Gain Drift vs. Temperature
0.3 mV Input Offset Voltage
100 kHz Bandwidth
0.004% Nonlinearity
Worldwide Safety Approval: UL 1577 (3750 Vrms/1min.)
and CSA, IEC/EN/DIN EN 60747-5-2
Advanced Sigma-Delta (Σ−∆) A/D Converter Technol-
ogy
Fully Differential Circuit Topology
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
Functional Diagram
IDD1
VDD1 1
IDD2
8 VDD2
VIN+ 2
+
+ 7 VOUT+
VIN- 3
-
- 6 VOUT-
GND1 4
SHIELD
5 GND2
NOTE: A 0.1 μF 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.


قانون اساسیصفحه 18
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دیتاشیت توصیه

شماره قطعه شرح مفصل تولید کنندگان
HCPL-7800 High CMR Isolation Amplifiers Agilent(Hewlett-Packard)
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HCPL-7800 Isolation Amplifer Avago
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HCPL-7800A High CMR Isolation Amplifiers Agilent(Hewlett-Packard)
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