ACPL-C87B, ACPL-C87A, ACPL-C870
Precision Optically Isolated Voltage Sensor
Data Sheet
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Description
The ACPL-C87B/C87A/C870 voltage sensors are optical
isolation amplifiers designed specifically for voltage
sensing. Its 2 V input range and high 1 GW input impe-
dance, makes it well suited for isolated voltage sensing
requirements in electronic power converters applications
including motor drives and renewable energy systems.
In a typical voltage sensing implementation, a resistive
voltage divider is used to scale the DC-link voltage to suit
the input range of the voltage sensor. A differential output
voltage that is proportional to the input voltage is created
on the other side of the optical isolation barrier.
For general applications, the ACPL-C87A (±1% gain
tolerance) and the ACPL-C870 (±3% gain tolerance)
are recommended. For high precision requirements,
the ACPL-C87B (±0.5% gain tolerance) can be used. The
ACPL-C87B/C87A/C870 family operates from a single 5 V
supply and provides excellent linearity. An active-high
shutdown pin is available which reduces the IDD1 current
to only 15
mA,
making them suitable for battery-powered
and other power-sensitive applications.
The high common-mode transient immunity (15 kV/ms)
of the ACPL-C87B/C87A/C870 provides the precision and
stability needed to accurately monitor DC-link voltage in
high noise environments. Combined with superior optical
coupling technology, the ACPL-C87B/C87A/C870 imple-
ments sigma-delta (Σ-D) modulation, chopper stabilized
amplifiers, and differential outputs to provide unequaled
isolation-mode noise rejection, low offset, high gain
accuracy and stability. This performance is delivered in a
compact, auto-insertable Stretched SO-8 (SSO-8) package
that meets worldwide regulatory safety standards.
Features
•
Advanced Sigma-Delta (Σ-D) Modulation Technology
•
Unity Gain 1 V/V, ±0.5% High Gain Accuracy (ACPL-C87B)
•
1 GW Input Impedence
•
0 to 2 V Nominal Input Range
•
-35 ppm/°C Low Gain Drift
•
21mV /°C Offset Voltage Drift
•
0.1% Non-Linearity Max
•
Active-High Shutdown Pin
•
100 kHz Wide Bandwidth
•
3 V to 5.5 V Wide Supply Range for Output Side
•
-40° C to +105° C Operating Temperature Range
•
15 kV/ms Common-Mode Transient Immunity
•
Compact, Auto-Insertable Stretched SO-8 Package
•
Safety and Regulatory Approvals:
– IEC/EN/DIN EN 60747-5-5: 1414 V
peak
working
insulation voltage
– UL 1577: 5000 V
rms
/1 min double protection rating
– CSA: Component Acceptance Notice #5
Applications
•
Isolated Voltage Sensing in AC and Servo Motor Drives
•
Isolated DC-Bus Voltage Sensing in Solar Inverters,
Wind Turbine Inverters
•
Isolated Sensor Interfaces
•
Signal Isolation in Data Acquisition Systems
•
General Purpose Voltage Isolation
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.
Functional Diagram
V
DD1
1
V
IN
2
SHDN 3
GND1 4
SHIELD
8 V
DD2
7 V
OUT+
6 V
OUT–
5 GND2
Table 1. Pin Description
Pin No.
1
2
3
4
5
6
7
8
Symbol
V
DD1
V
IN
SHDN
GND1
GND2
V
OUT-
V
OUT+
V
DD2
Description
Supply voltage for input side
(4.5 V to 5.5 V), relative to GND1
Voltage input
Shutdown pin (Active High)
Input side ground
Output side ground
Negative output
Positive output
Supply voltage for output side
(3 V to 5.5 V), referenced to GND2
Figure 1.
NOTE: A 0.1
mF
bypass capacitor must be connected between pins 1 and
4 and between pins 5 and 8.
Ordering Information
ACPL-C87B/C87A/C870 is UL recognized with 5000 Vrms/1 minute rating per UL 1577.
Table 2.
Option
Part number
ACPL-C87B
ACPL-C87A
ACPL-C870
(RoHS Compliant)
-000E
-500E
Package
Stetched
SO-8
Surface Mount
X
X
Tape &
Reel
X
IEC/EN/DIN EN
60747-5-5
X
X
Quantity
80 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-C87A-500E to order product of Surface Mount package in Tape and Reel packaging with IEC/EN/DIN EN 60747-5-5
Safety Approval and RoHS compliance.
Contact your Avago sales representative or authorized distributor for information.
2
Package Outline Drawing
Stretched SO-8 Package (SSO-8)
RECOMMENDED LAND PATTERN
5.850 ± 0.254
(0.230 ± 0.010)
PART NUMBER
8
7
6
5
DATE CODE
12.650
(0.498)
RoHS-COMPLIANCE
INDICATOR
1
7°
C87B
YWW
2
3
4
6.807 ± 0.127
(0.268 ± 0.005)
1.905
(0.075)
0.64
(0.025)
0.450
(0.018)
45°
1.590 ± 0.127
(0.063 ± 0.005)
3.180 ± 0.127
(0.125 ± 0.005)
0.381 ± 0.127
(0.015 ± 0.005)
0.200 ± 0.100
(0.008 ± 0.004)
1.270
(0.050) BSG
0.750 ± 0.250
(0.0295 ± 0.010)
11.50 ± 0.250
(0.453 ± 0.010)
Dimensions in millimeters and (inches).
0.254 ± 0.100
(0.010 ± 0.004)
Figure 2. SSO-8 Package
Note:
Lead coplanarity = 0.1 mm (0.004 inches).
Floating lead protrusion = 0.25mm (10mils) max.
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-C87B/C87A/C870 is approved by the following organizations:
IEC/EN/DIN EN 60747-5-5
Approval with Maximum Working Insulation Voltage V
IORM
= 1414 V
peak
.
UL
Approval under UL 1577, component recognition program up to V
ISO
= 5000 V
rms
/1 min. File 55361.
CSA
Approval under CSA Component Acceptance Notice #5, File CA 88324
3
Table 3. Insulation and Safety Related Specifications
Parameter
Minimum External Air Gap
(External Clearance)
Minimum External
Tracking (External Creepage)
Minimum Internal Plastic Gap
(Internal Clearance)
Tracking Resistance
(Comparative Tracking Index)
Isolation Group
CTI
Symbol
L(101)
L(102)
Value
8.0
8.0
0.5
Unit
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)
> 175
IIIa
V
Table 4. IEC/EN/DIN EN 60747-5-5 Insulation Characteristics
[1]
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 (Pending Qualification)
Input to Output Test Voltage, Method b
V
IORM
x 1.875 = V
PR
, 100% Production Test with t
m
= 1 sec, Partial Discharge < 5 pC
Input to Output Test Voltage, Method a
V
IORM
x 1.6 = V
PR
, 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
[2]
Output Power
[2]
Insulation Resistance at T
S
, V
IO
= 500 V
V
IORM
V
PR
V
PR
V
IOTM
T
S
I
S,INPUT
P
S,OUTPUT
R
S
Symbol
Value
I-IV
I-IV
I-IV
I-IV
I-III
55/105/21
2
1414
2652
2262
8000
175
230
600
≥ 10
9
Units
Vpeak
Vpeak
Vpeak
Vpeak
°C
mA
mW
W
Notes:
1. Insulation characteristics are guaranteed only within the safety maximum ratings, which must be ensured by protective circuits within the
application.
4
Table 5. Absolute Maximum Rating
Parameter
Storage Temperature
Ambient Operating Temperature
Supply Voltage
Steady-State Input Voltage
[1, 3]
Two-Second Transient Input Voltage
[2]
Logic Input
Output Voltages
Lead Solder Temperature
Symbol
T
S
T
A
V
DD1
, V
DD2
V
IN
V
IN
V
SD
V
OUT+
, V
OUT−
Min.
-55
-40
-0.5
-2
-6
-0.5
-0.5
Max.
+125
+105
6.0
V
DD1
+ 0.5
V
DD1
+ 0.5
V
DD1
+ 0.5
V
DD2
+ 0.5
Units
°C
°C
V
V
V
V
V
260° C for 10 sec., 1.6 mm below seating plane
Notes:
1. DC voltage of up to -2 V on the inputs does not cause latch-up or damage to the device.
2. Transient voltage of 2 seconds up to -6 V on the inputs does not cause latch-up or damage to the device.
3. Absolute maximum DC current on the inputs = 100 mA, no latch-up or device damage occurs.
Table 6. Recommended Operating Conditions
Parameter
Ambient Operating Temperature
V
DD1
Supply Voltage
V
DD2
Supply Voltage
Input Voltage Range
[1]
Shutdown Enable Voltage
Symbol
T
A
V
DD1
V
DD2
V
IN
V
SD
Min.
-40
4.5
3.0
0
V
DD1
– 0.5
Max.
+105
5.5
5.5
2.0
V
DD1
Units
°C
V
V
V
V
Notes:
1. 2 V is the nominal input range. Full scale input range (FSR) is 2.46 V.
5
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