HCPL-7820 Agilent Technologies, Inc., HCPL-7820 Datasheet

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HCPL-7820

Manufacturer Part Number
HCPL-7820
Description
Manufacturer
Agilent Technologies, Inc.
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HCPL-7820
Quantity:
5 510
Part Number:
HCPL-7820#300
Manufacturer:
AGILENT
Quantity:
18 000
Part Number:
HCPL-7820#500
Manufacturer:
AGILENT
Quantity:
20 000
High CMR Analog Isolation
Amplifiers
Technical Data
Features
• Fast Propagation Delays for
• High Common Mode
• 3% Gain Tolerance:
• 0.05% Nonlinearity
• Low Offset Voltage and Off-
• 200 kHz Bandwidth
• Performance Specified for
• Worldwide Safety and
• Compact Auto-Insertable
• Advanced Sigma-Delta (
• 1 m CMOS IC Technology
*The terms common-mode rejection (CMR) and isolation-mode rejection (IMR) are used interchangeably throughout this data sheet.
A 0.1 F bypass capacitor must be connected between pins 1 and 4 and between pins 5 and 8.
5965-3591E
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.
Over-Current and Fault
Detection Sensing
Rejection (CMR): 30 kV/ s at
V
HCPL-7820
5% Gain Tolerance:
HCPL-7825
set Drift vs. Temperature
Common Motor Control
Applications over -40 C to
100 C Temperature Range
Regulatory Approval: UL
1577 (3750 V rms/1 Min),
VDE 0884 and CSA
Standard 8-Pin DIP Package
A/D Converter Technology
CM
= 1000 V*
)
Applications
• Motor Phase and Rail
• General Purpose Current
• High-Voltage Monitoring
• Switched Mode Power
• General Purpose Analog
• Transducer Isolation
Description
The HCPL-7820/7825 high CMR
isolation amplifier consists of a
sigma-delta analog-to-digital
converter optically coupled to an
integrated output digital-to-analog
converter. When used with a
shunt resistor in the current path,
the HCPL-7820/7825 provides a
cost-effective, auto-insertion
compatible current sense solution.
Fast propagation delays allow this
part to be used in either motor
drive or inverter applications for
either phase current monitoring
or rail current fault detection
applications. High isolation mode
Current Sensing
Sensing and Monitoring
Supply Signal Isolation
Signal Isolation
GND1
H
rejection makes this product
suitable for noisy electrical
environments, such as those
generated by the high switching
rates of power IGBTs. Low offset
voltage together with low offset
change vs. temperature permits
accurate use of auto-calibration
techniques. Tight gain tolerance
with good nonlinearity further
provide the characteristics needed
to insure highly accurate motor
speed control. A high operating
temperature range with specified
performance parameters allow
Functional Diagram
HCPL-7820
HCPL-7825
V
V
V
DD1
IN+
IN–
1
2
3
4
I
DD1
+
CMR SHIELD
+
I
DD2
8
7
6
5
1-233
V
V
V
GND2
DD2
OUT+
OUT–

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HCPL-7820 Summary of contents

Page 1

... When used with a shunt resistor in the current path, the HCPL-7820/7825 provides a cost-effective, auto-insertion compatible current sense solution. Fast propagation delays allow this part to be used in either motor drive or inverter applications for ...

Page 2

... This performance is delivered in an auto-insertable, industry standard Ordering Information HCPL-782x Option yyy 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 ...

Page 3

Gull Wing Surface Mount Option 300* 9.65 ± 0.25 (0.380 ± 0.010 7820 YYWW 1 2 MOLDED 1.19 (0.047) MAX. 1.080 ± 0.320 (0.043 ± 0.013) 2.540 (0.100) BSC DIMENSIONS IN MILLIMETERS (INCHES). TOLERANCES (UNLESS OTHERWISE SPECIFIED): ...

Page 4

... Regulatory Information The HCPL-7820/7825 has been approved by the following organizations: UL Recognized under UL 1577, Component Recognition Program, FILE E55361. Insulation and Safety Related Specifications Parameter Symbol Min. External Air Gap L(IO1) (External Clearance) Min. External Tracking Path L(IO2) (External Creepage) Min. Internal Plastic Gap ...

Page 5

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 Recommended Operating Conditions Parameter Ambient Operating ...

Page 6

... V and unless otherwise noted. DD1 DD2 Parameter Symbol Input Offset Voltage V OS Absolute Value of Input | Offset Change vs. Temperature Gain: HCPL-7820 G Gain: HCPL-7825 G 200 mV Nonlinearity NL 200 100 mV Nonlinearity NL 100 Maximum Input Voltage |V | IN+ Before Output Clipping Average Input Bias ...

Page 7

AC Electrical Specifications All specifications and figures are at the nominal (typical) operating conditions and unless otherwise noted. A DD1 DD2 Parameter Symbol Min. Isolation Mode ...

Page 8

... RMS output noise. See applications section for more information. 12. Data sheet value is the amplitude of the transient at the differential output of the HCPL-7820/7825 when p-p 1 MHz square wave with 200 ns rise and fall times (measured at pins 1 and 8) is applied to both V and V ...

Page 9

... V – SUPPLY VOLTAGE – Figure 3. Input Offset Change vs. V DD1 and V . DD2 V DD1 1 0.1 µF 404 HCPL-7820/7825 13.2 3 0.01 µF 4 Figure 5. Gain and Nonlinearity Test Circuit. V +15 V DD2 0.1 µF 0.1 µ OUT 10 K – AD624CD GAIN = 100 0.1 µF 0.47 0.47 µF µF -15 V 4.0 3.5 NEGATIVE ...

Page 10

DD1 0 DD2 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -40 - 100 T – TEMPERATURE – °C A Figure 6. Gain Change vs. Temperature. 0.16 ...

Page 11

... ° 100 500 f – FREQUENCY – kHz Figure 19. Amplitude Response vs. Frequency. 78L05 IN OUT 1 0.1 0.1 µF µF 2 HCPL-7820/7825 PULSE GEN. 0.4 + Figure 16. Isolation Mode Rejection Test Circuit +15 V DD2 0.1 µF 8 0.1 µ – MC34081 0.1 µF ...

Page 12

... T – TEMPERATURE – °C A Figure 22. Dependence of Safety- Limiting Values on Temperature. VOLTAGE CLOCK REGULATOR GENERATOR ISO-AMP ENCODER MODULATOR INPUT Figure 23. HCPL-7820/7825 Block Diagram. FLOATING HV+ SUPPLY GATE DRIVE CIRCUIT FLOATING SUPPLY U1 78L05 IN OUT C1 0.1 µF MOTOR + – • • • ...

Page 13

... As shown in Figure 24, 0.1 F bypass capacitors (C2, C4) should be located as close as possible to the input and output power supply pins of the HCPL-7820/7825. The bypass capacitors are required because of the high-speed digital nature of the signals inside the isolation amplifier. A 0.01 F bypass capacitor (C3) is also rec- ...

Page 14

... PCB does not pass directly below or extend much wider than the HCPL-7820/7825. Using surface-mount components can help achieve many of the PCB objectives discussed in the pre- ceding paragraphs. An example ...

Page 15

... The offset of the op- amp should be low relative to the output offset of the HCPL-7820/ 7825, or less than about 5 mV. To maintain overall circuit band- width, the post-amplifier circuit should have a bandwidth at least ...

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