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PDF HCPL-7800 Data sheet ( Hoja de datos )
| Número de pieza | HCPL-7800 | |
| Descripción | Isolation Amplifer | |
| Fabricantes | Avago | |
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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.
1 page  
Regulatory Information
The HCPL-7800(A) has been approved by the following organizations:
IEC/EN/DIN EN 60747-5-2
Approved under:
IEC 60747-5-2:1997 + A1:2002
EN 60747-5-2:2001 + A1:2002
DIN EN 60747-5-2 (VDE 0884 Teil 2): 2003-01.
UL
Approved under UL 1577, component
recognition program up to VISO = 3750 Vrms.
CSA
Approved under CSA Component Acceptance
Notice #5, File CA 88324.
IEC/EN/DIN EN 60747-5-2 Insulation Characteristics[1]
Description
Symbol
Installation classification per DIN VDE 0110/1.89, Table 1
for rated mains voltage 300 Vrms
for rated mains voltage 600 Vrms
Climatic Classification
Pollution Degree (DIN VDE 0110/1.89)
Maximum Working Insulation Voltage
Input to Output Test Voltage, Method b[2]
VIORM x 1.875 = VPR, 100% Production Test with
tm = 1 sec, Partial discharge < 5 pC
Input to Output Test Voltage, Method a[2]
VIORM x 1.5 = VPR, Type and Sample Test,
tm = 60 sec, Partial discharge < 5 pC
Highest Allowable Overvoltage
(Transient Overvoltage tini = 10 sec)
Safety-limiting values—maximum values
allowed in the event of a failure.
Case Temperature
Input Current[3]
Output Power[3]
Insulation Resistance at TS, VIO = 500 V
VIORM
VPR
VPR
VIOTM
TS
IS,INPUT
PS,OUTPUT
RS
Notes:
1. Insulation characteristics are guaranteed only within the safety maximum ratings which
must be ensured by protective circuits within the application. Surface Mount Classification is
Class A in accordance with CECC00802.
2. Refer to the optocoupler section of the Isolation and Control Components Designer’s Cata-
log, under Product Safety Regulations section, (IEC/EN/DIN EN 60747-5-2) for a detailed descrip-
tion of Method a and Method b partial discharge test profiles.
3. Refer to the following figure for dependence of PS and IS on ambient temperature.
Characteristic
I-IV
I-III
55/100/21
2
891
1670
1336
6000
Unit
VPEAK
VPEAK
VPEAK
VPEAK
175
400
600
>109
°C
mA
mW
Ω
800
700
P S (mW)
IS (mA)
600
500
400
300
200
100
0
0 25 50 75 100 125 150 175 200
TA - CASE TEMPERATURE - oC
5 Page 
8.032
8.03
8.028
8.026
vs. VDD1
vs. VDD2
8.024
4.5
4.75 5.0 5.25
VDD - SUPPLY VOLTAGE - V
5.5
Figure 6. Gain vs. Supply.
0.03
0.025
0.02
0.015
0.01
0.005
0
-55 -25 5 35 65 95 125
TA - TEMPERATURE - ¡C
0.005
0.004
0.003
0.002
4.5
vs. VDD1
vs. VDD2
4.75 5.0 5.25
VDD - SUPPLY VOLTAGE - V
5.5
Figure 7. Nonlinearity vs. Temperature.
Figure 8. Nonlinearity vs. Supply.
4.2
3.4
2.6
1.8
1.0
-0.5
VOP
VOR
-0.3 -0.1 0.1 0.3
VIN - INPUT VOLTAGE - V
0.5
Figure 9. Output Voltage vs. Input Voltage.
13 0
-1
10
-2
7
IDD1
IDD2
4
-0.5 -0.3 -0.1 0.1
0.3
VIN - INPUT VOLTAGE - V
0.5
Figure 10. Supply Current vs. Input Voltage.
-3
-4
-5
-0.6
-0.4 -0.2 0 0.2 0.4
VIN - INPUT VOLTAGE - V
0.6
Figure 11. Input Current vs. Input Voltage.
1
0
-1
-2
-3
-4
10 100 1000 10000 100000
FREQUENCY (Hz)
Figure 12. Gain vs. Frequency.
50
0
-50
-100
-150
-200
-250
-300
10
100 1000 10000 100000
FREQUENCY (Hz)
Figure 13. Phase vs. Frequency.
5.5
4.7 Tpd 10
Tpd 50
3.9
Tpd 90
Trise
3.1
2.3
1.5
-55
-25 5 35 65 95
TA - TEMPERATURE - ˚C
125
Figure 14. Propagation Delay vs. Temperature.
11
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| PDF Descargar | [ Datasheet HCPL-7800.PDF ] | |
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