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PDF HCPL-7800A Data sheet ( Hoja de datos )
| Número de pieza | HCPL-7800A | |
| Descripción | High CMR Isolation Amplifiers | |
| Fabricantes | ETC | |
| Logotipo |  |
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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
1 page  
Absolute Maximum Ratings
Parameter
Storage Temperature
Ambient Operating Temperature
Supply Voltages
Steady-State Input Voltage
Two Second Transient Input Voltage
Output Voltages
Lead Solder Temperature
(1.6 mm below seating plane, 10 sec.)
Reflow Temperature Profile
Symbol
TS
TA
VDD1, VDD2
VIN+, VIN-
VOUT+, VOUT-
TLS
Min.
-55
- 40
0.0
-2.0
-6.0
-0.5
Max.
125
100
5.5
VDD1 +0.5
Unit
°C
°C
V
V
Note
VDD2 +0.5
260
V
°C
1
See Package Outline Drawings Section
Recommended Operating Conditions
Parameter
Ambient Operating Temperature
Supply Voltages
Input Voltage
Output Current
Symbol
TA
VDD1, VDD2
VIN+, VIN-
|IO|
Min.
-40
4.5
-200
Max.
85
5.5
200
1
Unit
°C
V
mV
mA
Note
2
3
4
5
1-220
5 Page 
0.15
0.10
MEAN
± 2 SIGMA
0.05
0
-0.05
-0.10
-40
-20 0 20 40 60 80
TA – TEMPERATURE – °C
100
0.06
0.04
MEAN
± 2 SIGMA
0.02
0
-0.02
-0.04
-0.06
4.4 4.6 4.8 5.0 5.2 5.4 5.6
VDD1 – INPUT SUPPLY VOLTAGE – V
0.06
MEAN
± 2 SIGMA
0.04
0.02
0
-0.02
-0.04
4.4 4.6 4.8 5.0 5.2 5.4 5.6
VDD2 – OUTPUT SUPPLY VOLTAGE – V
Figure 10. 200 mV Nonlinearity Drift
vs. Temperature.
Figure 11. 200 mV Nonlinearity Drift
vs. VDD1 (VDD2 = 5 V).
Figure 12. 200 mV Nonlinearity Drift
vs. VDD2 (VDD1 = 5 V).
0.15
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
-0.10
MEAN
± 2 SIGMA
-0.05
0
0.05
0.10
V IN – INPUT VOLTAGE – V
4.0
3.5
3.0
POSITIVE
2.5 OUTPUT
(PIN 7)
2.0 NEGATIVE
OUTPUT
(PIN 6)
1.5
1.0
-0.6 -0.4 -0.2 0 0.2 0.4
V IN – INPUT VOLTAGE – V
0.6
0
-200
-400
-600
-800
-1000
-1200
-0.2
-0.1 0
0.1
V IN – INPUT VOLTAGE – V
0.2
Figure 13. 100 mV Nonlinearity Error
Plot.
Figure 14. Typical Output Voltages vs.
Input Voltage.
Figure 15. Typical Input Current vs.
Input Voltage.
2
0
-2
-4
-6
-8
-10
-6
-4 -2 0 2
4
V IN – INPUT VOLTAGE – V
6
Figure 16. Typical Input Current vs.
Input Voltage.
10.5 12.0
TA = 85°C
TA = 25°C
TA = -40°C
10.0 11.5
9.5 11.0
9.0
TA = -40°C
TA = 25°C
TA = 85°C
8.5
-0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4
VIN – INPUT VOLTAGE – V
Figure 17. Typical Input Supply
Current vs. Input Voltage.
10.5
10.0
-0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4
V IN – INPUT VOLTAGE – V
Figure 18. Typical Output Supply
Current vs. Input Voltage.
1-226
11 Page | ||
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| PDF Descargar | [ Datasheet HCPL-7800A.PDF ] | |
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