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HP

HCPL-7800A Datasheet Preview

HCPL-7800A Datasheet

High CMR Isolation Amplifiers

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H
High CMR Isolation Amplifiers
Technical Data
HCPL-7800
HCPL-7800A
HCPL-7800B
Features
• 15 kV/µs Common-Mode
Rejection at VCM = 1000 V*
• Compact, Auto-Insertable
Standard 8-pin DIP Package
• 4.6 µV/°C Offset Drift vs.
Temperature
• 0.9 mV Input Offset Voltage
• 85 kHz Bandwidth
• 0.1% Nonlinearity
• Worldwide Safety Approval:
UL 1577 (3750 V rms/1 min),
VDE 0884 and CSA
• Advanced Sigma-Delta (Σ∆)
A/D Converter Technology
• Fully Differential Circuit
Topology
• 1 µm CMOS IC Technology
Applications
• Motor Phase Current
Sensing
• General Purpose Current
Sensing
• High-Voltage Power Source
Voltage Monitoring
*The terms common-mode rejection
(CMR) and isolation-mode rejection (IMR)
are used interchangeably throughout this
data sheet.
• Switch-Mode Power Supply
Signal Isolation
• General Purpose Analog
Signal Isolation
• Transducer Isolation
Description
The HCPL-7800 high CMR
isolation amplifier provides a
unique combination of features
ideally suited for motor control
circuit designers. The product
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.
This product paves the way for a
smaller, lighter, easier to produce,
high noise rejection, low cost
solution to motor current
sensing. The product can also be
used for general analog signal
isolation applications requiring
high accuracy, stability and
linearity under similarly severe
noise conditions. For general
applications, we recommend the
HCPL-7800 which exhibits a
part-to-part gain tolerance of
± 5%. For precision applications,
HP offers the HCPL-7800A and
HCPL-7800B, each with part-to-
part gain tolerances of ± 1%.
The HCPL-7800 utilizes sigma-
delta (Σ∆) analog-to-digital
converter technology, chopper
stabilized amplifiers, and a fully
differential circuit topology
fabricated using HP’s 1 µm
CMOS IC process. The part also
couples our high-efficiency, high-
speed AlGaAs LED to a high-
speed, noise-shielded detector
Functional Diagram
1 I DD1
VDD1
I DD2
8
VDD2
2 I IN
VIN+
+
3
VIN-
-
IO
+
7
VOUT+
6
- VOUT-
4
GND1
CMR SHIELD
5
GND2
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.
1-216
5965-3592E




HP

HCPL-7800A Datasheet Preview

HCPL-7800A Datasheet

High CMR Isolation Amplifiers

No Preview Available !

using our patented “light-pipe”
optocoupler packaging
technology.
Together, these features deliver
unequaled isolation-mode noise
rejection, as well as excellent
offset and gain accuracy and
stability over time and tempera-
ture. This performance is
delivered in a compact, auto-
insertable, industry standard 8-
pin DIP package that meets
worldwide regulatory safety
standards (gull-wing surface
mount option #300 also
available).
Ordering Information:
HCPL-7800x
Option yyy
No Specifier = ± 5% Gain Tol.; Mean Gain Value = 8.00
A = ± 1% Gain Tol.; Mean Gain Value = 7.93
B = ± 1% Gain Tol.; Mean Gain Value = 8.07
300 = Gull Wing Surface Mount Lead Option
500 = Tape/Reel Package Option (1 k min.)
Option datasheets available. Contact your Hewlett-Packard sales representative or authorized distributor for
information.
Package Outline Drawings
Standard DIP Package
9.40 (0.370)
9.90 (0.390)
87 6
HP 7800
YYWW
PIN ONE 1 2 3
1.19 (0.047) MAX.
5
TYPE NUMBER*
DATE CODE
4
1.78 (0.070) MAX.
6.10 (0.240)
6.60 (0.260)
7.36 (0.290)
7.88 (0.310)
0.20 (0.008)
0.33 (0.013)
5° TYP.
4.70 (0.185) MAX.
PIN DIAGRAM
PIN ONE
0.76 (0.030)
1.24 (0.049)
0.51 (0.020) MIN.
2.92 (0.115) MIN.
0.65 (0.025) MAX.
2.28 (0.090)
2.80 (0.110)
1 VDD1 VDD2 8
2 VIN+ VOUT+ 7
3 VIN– VOUT– 6
4 GND1 GND2 5
DIMENSIONS IN MILLIMETERS AND (INCHES).
* TYPE NUMBER FOR: HCPL-7800 = 7800
HCPL-7800A = 7800A
HCPL-7800B = 7800B
1-217


Part Number HCPL-7800A
Description High CMR Isolation Amplifiers
Maker HP
Total Page 17 Pages
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