Agilent HCPL-7510
Isolated Linear Sensing IC
Data Sheet
Description
The HCPL-7510 isolated linear
current sensing IC family is
designed for current sensing in
low-power electronic motor
drives. In a typical
implementation, motor current
flows through an external
resistor and the resulting
analog voltage drop is sensed
by the HCPL-7510. An output
voltage is created on the other
side of the HCPL-7510 optical
isolation barrier. This single-
ended output voltage is
proportional to the motor
current. Since common-mode
voltage swings of several
hundred volts in tens of
nanoseconds are common in
modern switching inverter
motor drives, the HCPL-7510
was designed to ignore very
high common-mode transient
slew rates (of at least 10 kV/
µs).
The high CMR capability of the
HCPL-7510 isolation amplifier
provides the precision and
stability needed to accurately
monitor motor current in high
noise motor control environ-
ments, providing for smoother
control (less “torque ripple”)
in various types of motor
control applications.
Functional Diagram
I
DD1
V
DD1
V
IN+
V
IN–
GND1
1
2
3
4
SHIELD
+
–
I
DD2
8
7
6
5
V
DD2
V
OUT
V
REF
GND2
Features
• 15 kV/µs common-mode rejection
at Vcm = 1000 V
• Compact, auto-insertable 8-pin
DIP package
• 60 ppm/°C gain drift vs.
temperature
• –0.6 mV input offset voltage
• 8 µV/°C input offset voltage vs.
temperature
• 100 kHz bandwidth
• 0.06% nonlinearity, single-ended
amplifier output for low power
application.
• Worldwide safety approval:
UL 1577 (3750 Vrms/1 min.), CSA
and IEC/EN/DIN EN 60747-5-2
(Option 060 only)
• Advanced sigma-delta (Σ-∆)
Σ∆
A/D converter technology
Applications
• Low-power inverter current
sensing
• Motor phase and rail current
sensing
• Switched mode power supply
signal isolation
• General purpose low-power
current sensing and monitoring
• General purpose analog signal
isolation
+
–
The product can also be used
for general analog signal
isolation applications. For
general applications, we
recommend the HCPL-7510
(gain tolerance of ±5%). The
HCPL-7510 utilizes sigma delta
(S-D) analog-to-digital
converter technology to
delivery offset and gain
accuracy and stability over
time and temperature. This
performance is delivered in a
compact, auto-insert, 8-pin
DIP package that meets world-
wide regulatory safety
standards. (A gull-wing
surface mount option #300 is
also available).
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.
Regulatory Information
The HCPL-7510 has been approved by the following organizations:
IEC/EN/DIN EN 60747-5-2
Approved under:
IEC 60747-5-2:1997 + A1:2002
EN 60747-5-2:2001 + A1:2002
DIN EN 60747-5-2 (VDE 0884 Teil 2):2003-01.
UL
Approved under UL 1577, component recognition
program up to V
ISO
= 3750 V
RMS
. File E55361.
CSA
Approved under CSA Component Acceptance
Notice #5, File CA 88324.
IEC/EN/DIN EN 60747-5-2 Insulation Characteristics
[1]
Description
Installation classification per DIN EN 0110-1/1997-04, Table 1
for rated mains voltage - 150 V
rms
for rated mains voltage - 300 V
rms
for rated mains voltage - 600 V
rms
Climatic Classification
Pollution Degree (DIN EN 0110-1/1997-04)
Maximum Working Insulation Voltage
Input to Output Test Voltage, Method b
[2]
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
[2]
V
IORM
x 1.5 = V
PR
, type and sample test, t
m
= 60 sec, partial discharge <5 pC
Highest Allowable Overvoltage (transient overvoltage t
ini
= 10 sec)
Safety-limiting values – maximum values allowed in the event of a failure.
Case Temperature
Input Current
[3]
Output Power
[3]
Insulation Resistance at T
S
, V
IO
= 500 V
Notes:
1. Insulation characteristics are guaranteed only within the safety maximum ratings which must be
ensured by protective circuits within the application. Surface Mount Classifications is Class A in
accordance with CECC00802.
2. Refer to the optocoupler section of the Isolation and Control Components Designer’s Catalog,
under Product Safety Regulations section,
(IEC/EN/DIN EN 60747-5-2) for a detailed description of Method a and Method b partial
discharge test profiles.
3. Refer to the following figure for dependence of P
S
and I
S
on ambient temperature.
Symbol
Characteristic Unit
I – IV
I – III
I – II
55/100/21
2
V
IORM
V
PR
V
PR
V
IOTM
891
1670
1336
6000
V
peak
V
peak
V
peak
V
peak
°C
mA
mW
Ω
T
S
175
I
S, INPUT
400
P
S, OUTPUT
600
R
S
800
>10
9
OUTPUT POWER – P
S
, INPUT CURRENT – I
S
700
600
500
400
300
200
100
0
0
25
50
75
P
S
(mW)
I
S
(mA)
100 125 150 175 200
T
S
– CASE TEMPERATURE – C
5
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