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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
• 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 highnoise motor control environments, 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-topart gain tolerances of ± 1%. The HCPL-7800 utilizes sigmadelta (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, highspeed AlGaAs LED to a highspeed, noise-shielded detector
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.
Functional Diagram
V DD1 1 I DD1 I DD2 8 V DD2
V IN+
2
I IN + +
IO
7
V OUT+
V IN-
3
-
-
6
V OUT-
GND1
4
5 GND2
CMR SHIELD
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.
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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 temperature. This performance is delivered in a compact, autoinsertable, industry standard 8-
pin DIP package that meets worldwide regulatory safety standards (gull-wing surface mount option #300 also available).
Ordering Information:
HCPL-7800x 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 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.
Package Outline Drawings
Standard DIP Package
9.40 (0.370) 9.90 (0.390) 8 7 6 5
TYPE NUMBER* DATE CODE 6.10 (0.240) 6.60 (0.260) 7.36 (0.290) 7.88 (0.310)
0.20 (0.008) 0.33 (0.013)
HP 7800 YYWW PIN ONE 1.19 (0.047) MAX. 1 2 3 4
5° TYP.
1.78 (0.070) MAX.
4.70 (0.185) MAX. PIN ONE 0.51 (0.020) MIN. 2.92 (0.115) MIN. 1 2 3 0.76 (0.030) 1.24 (0.049) 0.65 (0.025) MAX. 2.28 (0.090) 2.80 (0.110) DIMENSIONS IN MILLIMETERS AND (INCHES). 4
PIN DIAGRAM VDD1 VIN+ VIN– VDD2 8 VOUT+ 7 VOUT– 6
GND1 GND2 5
* TYPE NUMBER FOR: HCPL-7800 = 7800 HCPL-7800A = 7800A HCPL-7800B = 7800B
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OPTOCOUPLERS
Gull Wing Surface Mount Option 300*
PIN LOCATION (FOR REFERENCE ONLY) 9.65 ± 0.25 (0.380 ± 0.010)
8 7 6 5
1.02 (0.040) 1.19 (0.047)
4.83 TYP. (0.190) HP 7800 YYWW 6.350 ± 0.25 (0.250 ± 0.010) 9.65 ± 0.25 (0.380 ± 0.010)
MOLDED
1
2
3
4
1.19 (0.047) 1.78 (0.070) 1.780 (0.070) MAX. 9.65 ± 0.25 (0.380 ± 0.010) 7.62 ± 0.25 (0.300 ± 0.010)
0.380 (0.015) 0.635 (0.025)
1.19 (0.047) MAX.
4.19 MAX. (0.165)
0.20 (0.008) 0.33 (0.013)
1.080 ± 0.320 (0.043 ± 0.013) 2.540 (0.100) BSC
0.51 ± 0.130 (0.020 ± 0.005)
0.635 ± 0.25 (0.025 ± 0.010) 12° NOM.
DIMENSIONS IN MILLIMETERS (INCHES). TOLERANCES (UNLESS OTHERWISE SPECIFIED): xx.xx = 0.01 xx.xxx = 0.005 * REFER TO OPTION 300 DATA SHEET FOR MORE INFORMATION.
LEAD COPLANARITY MAXIMUM: 0.102 (0.004)
Maximum Solder Reflow Thermal Profile
260 240 220 200 180 160 140 120 100 80 60 40 20 0 0 ∆T = 145°C, 1°C/SEC ∆T = 115°C, 0.3°C/SEC
TEMPERATURE – °C
∆T = 100°C, 1.5°C/SEC
1
2
3
4
5
6
7
8
9
10
11
12
TIME – MINUTES (NOTE: USE OF NON-CHLORINE ACTIVATED FLUXES IS RECOMMENDED.)
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The HCPL-7800 has been approved by the following organizations: UL Recognized under UL 1577, Component Recognition .