HCPL7850300 Avago Technologies US Inc., HCPL7850300 Datasheet

HCPL7850300

Manufacturer Part Number
HCPL7850300
Description
Manufacturer
Avago Technologies US Inc.
Datasheet

Specifications of HCPL7850300

Operating Supply Voltage (typ)
5V
Lead Free Status / RoHS Status
Not Compliant
Hermetically Sealed Analog Isolation Amplifier
Data Sheet
Description
The HCPL-7850/7851 is an isolation amplifier that provides
accurate, electrically isolated and amplified representations
of voltage and current. When used with a shunt resistor to
monitor the motor phase current in a high speed motor
drive, the device will offer superior reliability compared
with the traditional solutions such as current transformers
and Hall-effect sensors. The HCPL-7850/7851 consists of a
sigma-delta analog-to-digital converter optically coupled
to a digital-to-analog converter in a hermetically sealed
package. The products are capable of operation and stor-
age over the full military temperature range and can be
purchased as either commercial product or with full MIL-
PRF-38534 Class H testing or from the appropriate DSCC
drawing. All devices are manufactured and tested on a
MIL-PRF-38534 certified line and are included in the DSCC
Qualified Manufacturers List, QML-38534 for Hybrid Mi-
crocircuits.
Schematic Diagram
HCPL-7850, HCPL-7851, 5962-97557
A 0.1 F bypass capacitor must be connected between pins 1 and 4 and between pins 5 and 8.
GND1
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.
V
V
V
DD1
IN+
IN–
1
2
3
4
I
DD1
+
SHIELD
+
I
DD2
8
7
5
6
V
V
V
GND2
DD2
OUT+
OUT–
Features
• Performance guaranteed over full military
• Manufactured and tested on a MIL-PRF-38534
• Hermetically sealed packages
• Dual marked with device part number and DSCC
• QML-38534, Class H
• HCPL-7840 function compatibility
• High common mode rejection (CMR):
• 5% gain tolerance
• 0.1% nonlinearity
• Low offset voltage and offset temperature coefficient
• 100 kHz bandwidth
Applications
• Industrial and military
• High reliability systems
• Harsh industrial environments
• Transportation, medical, and life critical systems
• General purpose analog signal isolation
• Motor phase and rail current sensing
• Inverter current sensing
• Switched mode power supply signal isolation
• General purpose current sensing and monitoring
temperature range: –55˚C to +125˚C
certified line
drawing number
8 kV/ s at VCM = 1000 V

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HCPL7850300 Summary of contents

Page 1

Hermetically Sealed Analog Isolation Amplifier Data Sheet HCPL-7850, HCPL-7851, 5962-97557 Description The HCPL-7850/7851 is an isolation amplifier that provides accurate, electrically isolated and amplified representations of voltage and current. When used with a shunt resistor to monitor the motor phase ...

Page 2

Superior performance in design critical specifications such as common-mode rejection, offset voltage, nonlinearity, and operating temperature make the HCPL-7850/7851 an excellent choice for designing reliable products such as motor controllers and inverters. Common-mode rejection of 8 kV/ s makes the ...

Page 3

Outline Drawing ;; ; ; ;; ; ; 9.40 (0.370) 9.91 (0.390) 0.76 (0.030) 1.27 (0.050) 0.51 (0.020) MIN. 2.29 (0.090) 0.51 (0.020) 2.79 (0.110) NOTE: DIMENSIONS IN MILLIMETERS (INCHES Hermetic Optocoupler Options Option Description ...

Page 4

Absolute Maximum Ratings Parameter Storage Temperature Operating Temperature Supply Voltages Steady-State Input Voltage 2 Second Transient Input Voltage Output Voltages Lead Solder Temperature ESD Classification (MIL-STD-883, Method 3015) HCPL-7850/7851 Recommended Operating Conditions Parameter Symbol Supply Voltages V V Input Voltage ...

Page 5

DC Electrical Specifications Over recommended operating conditions (T unless otherwise specified). Group A Parameter Symbol Subgroups Input Offset V 1,2,3 OS Voltage Gain G 2,3 1 200 mV NL 2,3 200 Nonlinearity 1 100 mV NL 2,3 100 Nonlinearity 1 ...

Page 6

AC Electrical Specifications Over recommended operating conditions ( unless otherwise specified). DD2 Group A Parameter Symbol Subgroups Common Mode CMR 9 Rejection Propagation t 9,10,11 PD50 Delay to 50% Propagation t 9,10,11 PD90 Delay to 90% ...

Page 7

V DD1 1 2 HCPL-7850 0.1 µ Figure 1. Input Offset Voltage Test Circuit. 2 DD1 DD2 1.5 1.0 0.5 0 -0.5 -60 - 100 140 T – ...

Page 8

V DD1 1 0.1 µF 404 HCPL-7850 13.2 3 0.01 µF 4 Figure 5. Gain and Nonlinearity Test Circuit. 0. DD1 DD2 0 -0.05 -0.10 -0.15 -0.20 -60 -20 ...

Page 9

DD1 200 DD2 100 IN– °C 0.3 A 0.2 0.1 0 -60 - 100 140 T – TEMPERATURE – °C ...

Page 10

DD1 DD2 IN– 9.5 9 25°C A 8.5 8.0 -0.4 -0.2 0 0.2 0.4 V – INPUT VOLTAGE – V IN+ Figure 15. Output Supply ...

Page 11

DELAY TO 90% 9 DELAY TO 50% RISE/FALL TIME DD1 DD2 IN– 100 mV STEP IN+ 2 ...

Page 12

VOLTAGE CLOCK REGULATOR GENERATOR ISO-AMP ENCODER MODULATOR INPUT Figure 23. HCPL-7850 Block Diagram. POSITIVE FLOATING SUPPLY HV+ GATE DRIVE CIRCUIT U1 78L05 IN C1 0.1 µF MOTOR + – • • • R SENSE • • • HV– Figure 24. ...

Page 13

Applications Information Functional Description Figure 23 shows the primary functional blocks of the HCPL- 7850. In operation, the sigma-delta modulator converts the analog input signal into a high-speed serial bit stream. The time average of this bit stream is directly ...

Page 14

As shown in Figure 24, a 0.1 F bypass capacitor (C2, C4) should be located as close as possible to the input and output power supply pins of the HCPL-7850. The bypass capacitors are required because of the high-speed digital ...

Page 15

PCB does not pass directly below the HCPL-7850. Using surface mount components can help achieve many of the PCB objectives discussed in the preceding paragraphs. An example through-hole PCB layout illustrating some ...

Page 16

Table 1. Current Shunt Summary Shunt Resistor Part Number LVR-3.05-1% LVR-3.02-1% LVR-3.01-1% LVR-5.005-1% MIL-PRF-38534 Class H and DSCC SMD Test Program Avago Technologies’ Hi-Rel Optocouplers are in compliance with MIL-PRF-38534 Class H. Class H devices are also in compliance with ...

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