ACPL-790B, ACPL-790A, ACPL-7900
Precision Isolation Amplifiers
Data Sheet
Description
The ACPL-790B/790A/7900 isolation amplifiers were designed
for current and voltage sensing in electronic power converters
in applications including motor drives and renewable energy
systems. In a typical motor drive implementation, current flows
through an external resistor and the resulting analog voltage
drop is sensed by the isolation amplifier. A differential output
voltage that is proportional to the current is created on the
other side of the optical isolation barrier.
For general applications, the ACPL-790A (±1% gain tolerance)
and the ACPL-7900 (±3% gain tolerance) are recommended.
For high precision applications, the ACPL-790B (±0.5% gain
tolerance) can be used. The product operates from a single 5 V
supply and provides excellent linearity and dynamic
performance of 62 dB SNR. With 200 kHz bandwidth, 1.6 μs fast
response time, the product captures transients in short circuit
and overload conditions. The high common-mode transient
immunity (15 kV/μs) of the ACPL-790B/790A/7900 provides the
precision and stability needed to accurately monitor motor
current in high noise motor control environments, providing
for smoother control (less “torque ripple”) in various types of
motor control applications.
Combined with superior optical coupling technology, the
ACPL-790B/790A/7900 implements sigma-delta (-)
analog-to-digital converter, chopper stabilized amplifiers, and
a fully differential circuit topology to provide unequaled
isolation-mode noise rejection, low offset, high gain accuracy
and stability. This performance is delivered in a compact,
auto-insertable DIP-8 package that meets worldwide
regulatory safety standards.
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.
Features
±0.5% High Gain Accuracy (ACPL-790B)
–50 ppm/°C Low Gain Drift
0.4 mV Input Offset Voltage
0.05% Excellent Linearity
62 dB SNR
200 kHz Wide Bandwidth
3 V to 5.5 V Wide Supply Range for Output Side
-40° C to +105° C Operating Temperature Range
Advanced Sigma-Delta (-) A/D Converter Technology
Fully Differential Isolation Amplifier
15 kV/μs Common-Mode Transient Immunity
Compact, Auto-Insertable DIP-8 Package
Safety and Regulatory Approvals:
—
IEC/EN/DIN EN 60747-5-5: 891 Vpeak working
insulation voltage
—
UL 1577: 5000 Vrms/1 min double protection rating
—
CSA: Component Acceptance Notice #5
Applications
Current/Voltage Sensing in AC and Servo Motor Drives
Solar Inverters, Wind Turbine Inverters
Industrial Process Control
Data Acquisition Systems
Switching Power Supply Signal Isolation
General Purpose Analog Signal Isolation
Traditional Current Transducer Replacements
Avago Technologies
-1-
ACPL-790B, ACPL-790A, ACPL-7900
Data Sheet
Functional Diagram
Functional Diagram
V
DD1
1
V
IN+
2
V
IN-
3
GND1 4
I
DD1
I
DD2
8 V
DD2
+
-
SHIELD
+
-
7 V
OUT+
6 V
OUT-
5 GND2
NOTE
A 0.1 μF bypass capacitor must be connected between pins 1 and 4 and between pins 5 and 8.
Pin Description
Table 1 Pin Description
Pin No.
1
2
3
4
5
6
7
8
V
DD1
V
IN+
V
IN–
GND1
GND2
V
OUT–
V
OUT+
V
DD2
Symbol
Description
Supply voltage for input side (4.5 V to 5.5 V), relative to GND1
Positive input (± 200 mV recommended)
Negative input (normally connected to GND1)
Input side ground
Output side ground
Negative output
Positive output
Supply voltage for output side (3 V to 5.5 V), relative to GND2
Ordering Information
ACPL-790B/790A/7900 is UL recognized with 5000 Vrms/1 minute rating per UL 1577.
Table 2 Ordering Information
Part Number
ACPL-790B
ACPL-790A
ACPL-7900
Option (RoHS
Compliant)
-000E
-300E
-500E
Package
300 mil
DIP-8
Surface
Mount
Gull Wing
Tape & Reel
X
X
X
X
X
X
X
X
IEC/EN/DIN EN
60747-5-5
Quantity
50 per tube
50 per tube
1000 per reel
To order, choose a part number from the part number column and combine with the desired option from the option column to
form an order entry.
Example:
ACPL-790B-500E to order product of Gull Wing Surface Mount package in Tape and Reel packaging with IEC/EN/DIN EN 60747-5-5
Safety Approval and RoHS compliance.
Optional data sheets are available. Contact your Avago sales representative or authorized distributor for information.
Avago Technologies
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ACPL-790B, ACPL-790A, ACPL-7900
Data Sheet
Package Outline Drawings
Package Outline Drawings
Figure 1 8-Pin IP Package
9.80 ± 0.25
(0.386 ± 0.010)
7.62 ± 0.25
(0.300 ± 0.010)
6.35 ± 0.25
(0.250 ± 0.010)
Device Part Number
8
7
6
5
Avago
Lead Free
•
1
A NNNN Z
YYWW
EEE P
2
3
4
Test Rating Code
UL Logo
Special Program
Code
Pin 1 Dot
Date Code
1.19 (0.047) MAX.
Lot ID
1.78 (0.070) MAX.
5 TYP.
+ 0.076
0.254 - 0.051
+ 0.003)
(0.010 - 0.002)
3.56 ± 0.13
(0.140 ± 0.005)
4.70 (0.185) MAX.
0.51 (0.020) MIN.
2.92 (0.115) MIN.
DIMENSIONS IN MILLIMETERS AND (INCHES).
OPTION NUMBERS 300 AND 500 NOT MARKED.
NOTE: FLOATING LEAD PROTRUSION IS 0.25 mm (10 mils) MAX.
1.080 ± 0.320
(0.043 ± 0.013)
0.65 (0.025) MAX.
2.54 ± 0.25
(0.100 ± 0.010)
NOTE
Initial or continued variation in the color of the white mold compound is normal and does not affect device
performance or reliability.
Avago Technologies
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ACPL-790B, ACPL-790A, ACPL-7900
Data Sheet
Recommended Pb-Free IR Profile
Figure 2 Gull Wing Surface Mount Option 300
LAND PATTERN RECOMMENDATION
1.016 (0.040)
9.80 ± 0.25
(0.386 ± 0.010)
8
7
6
5
10.9 (0.430)
6.350 ± 0.25
(0.025 ± 0.010)
1
2
3
4
1.27 (0.050)
1.780
(0.070)
MAX.
9.65 ± 0.25
(0.380 ± 0.010)
7.62 ± 0.25
(0.300 ± 0.010)
2.0 (0.080)
1.19
(0.047)
MAX.
3.56 ± 0.13
(0.140 ± 0.005)
1.080 ± 0.320
(0.043 ± 0.013)
0.20 (0.008)
0.33 (0.013)
2.54
(0.100)
BSC
0.635 ± 0.25
(0.025 ± 0.010)
0.635 ± 0.130
(0.025 ± 0.005)
12˚ NOM.
Dimensions in millimeters (inches).
NOTE
Floating lead protrusion is 0.5 mm (20 mils) max.
Tolerances (unless otherwise specified):
xx.xx = 0.01
xx.xxx = 0.005
Lead coplanarity
Maximum: 0.102 (0.004)
Recommended Pb-Free IR Profile
Recommended reflow condition as per JEDEC Standard, J-STD-020 (latest revision). Non-Halide Flux should be used.
Regulatory Information
The ACPL-790B/790A/7900 is approved by the following organizations:
IEC/EN/DIN EN 60747-5-5
Approved with Maximum Working Insulation Voltage, V
IORM
= 891 Vpeak.
UL
Approval under UL 1577, component recognition program up to V
ISO
= 5000 Vrms/1 min. File E55361.
CSA
Approval under CSA Component Acceptance Notice #5, File CA 88324.
Avago Technologies
-4-
ACPL-790B, ACPL-790A, ACPL-7900
Data Sheet
Insulation and Safety Related Specifications
Insulation and Safety Related Specifications
Table 3 Insulation and Safety Related Specifications
Parameter
Minimum External Air Gap (External
Clearance)
Symbol
L(101)
7.4
8.0
0.5
Value
Units
mm
mm
mm
Conditions
Measured from input terminals to output terminals, shortest
distance through air
Measured from input terminals to output terminals, shortest
distance path along body
Through insulation distance, conductor to conductor, usually
the direct distance between the photoemitter and
photodetector inside the optocoupler cavity
DIN IEC 112/VDE 0303 Part 1
Material Group (DIN VDE 0110, 1/89, Table 1)
Minimum External Tracking (External L(102)
Creepage)
Minimum Internal Plastic Gap
(Internal Clearance)
Tracking Resistance (Comparative
Tracking Index)
Isolation Group
CTI
>175
IIIa
V
IEC/EN/DIN EN 60747-5-5 Insulation Characteristics
Insulation characteristics are guaranteed only within the safety maximum ratings, which must be ensured by protective circuits
within the application.
Table 4 IEC/EN/DIN EN 60747-5-5 Insulation Characteristics
Description
Installation classification per DIN VDE 0110/1.89, Table 1
for rated mains voltage. 150 Vrms
for rated mains voltage. 300 Vrms
for rated mains voltage. 450 V rms
for rated mains voltage. 600 Vrms
for rated mains voltage . 1000 Vrms
Climatic Classification
Pollution Degree (DIN VDE 0110/1.89)
Maximum Working Insulation Voltage
Input to Output Test Voltage, Method b
V
IORM
× 1.875 = VPR, 100% Production Test with t
m
= 1 sec, Partial Discharge < 5 pC
Input to Output Test Voltage, Method a
V
IORM
× 1.6 = VPR, Type and Sample Test, t
m
= 10 sec, Partial Discharge < 5 pC
Highest Allowable Overvoltage (Transient Overvoltage, t
ini
= 60 sec)
Safety-limiting values (Maximum values allowed in the event of a failure)
Case Temperature
Input Current
a
Output Power
a
Insulation Resistance at T
S
, V
IO
= 500 V
a.
Symbol
I-IV
I-IV
I-III
I-III
I-II
Value
Units
55/105/21
2
V
IORM
V
PR
V
PR
V
IOTM
T
S
I
S,INPUT
P
S,OUTPUT
RS
891
1671
1426
8000
175
400
600
≥10
9
Vpeak
Vpeak
Vpeak
Vpeak
°C
mA
mW
Safety-limiting parameters are dependent on ambient temperature. The Input Current, I
S,INPUT
, derates linearly above 25 °C free-air temperature at a rate of
2.67 mA/°C; the Output Power, P
S,OUTPUT
, derates linearly above 25 °C free-air temperature at a rate of 4 mW/°C.
Avago Technologies
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