HCPL-7800A/HCPL-7800
Isolation Amplifer
Datasheet
Description
The HCPL-7800(A) isolation amplifier family was designed
for current sensing in electronic motor drives. In a typical
implementation, motor currents flow through an external
resistor and the resulting analog voltage drop is sensed by
the HCPL-7800(A). A differential output voltage is created
on the other side of the HCPL-7800(A) optical isolation
barrier. This differential output voltage is proportional to
the motor current and can be converted to a single-ended
signal by using an op-amp as shown in the recommended
application circuit. Since common-mode voltage swings
of several hundred volts in tens of nanoseconds are com-
mon in modern switching inverter motor drives, the HCPL-
7800(A) was designed to ignore very high common-mode
transient slew rates (of at least 10 kV/µs).
The high CMR capability of the HCPL-7800(A) 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.
The product can also be used for general analog signal
isolation applications requiring high accuracy, stability,
and linearity under similarly severe noise con-ditions.
For general applications, we recommend the HCPL-7800
(gain tolerance of ±3%). For precision applications Avago
Technologies offers the HCPL-7800A with part-to-part
gain tolerance of ±1%. The HCPL-7800(A) utilizes sigma
delta (Σ−∆) analog-to-digital converter technology, chop-
per stabilized amplifiers, and a fully differential circuit
topology.
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, auto-insertable,
industry standard 8-pin DIP package that meets worldwide
regulatory safety standards. (A gull-wing surface mount
option #300 is also available).
Features
•
•
•
•
•
•
•
15 kV/µs Common-Mode Rejection at V
CM
= 1000 V
Compact, Auto-Insertable Standard 8-pin DIP Package
0.00025 V/V/°C Gain Drift vs. Temperature
0.3 mV Input Offset Voltage
100 kHz Bandwidth
0.004% Nonlinearity
Worldwide Safety Approval: UL 1577 (3750 Vrms/1 min.)
and CSA, IEC/EN/DIN EN 60747-5-2
• Advanced Sigma-Delta (Σ−∆) A/D Converter Technol-
ogy
• Fully Differential Circuit Topology
Applications
•
•
•
•
•
Motor Phase and Rail Current Sensing
Inverter Current Sensing
Switched Mode Power Supply Signal Isolation
General Purpose Current Sensing and Monitoring
General Purpose Analog Signal Isolation
Functional Diagram
V
DD1
V
IN+
V
IN-
I
DD1
1
2
3
I
DD2
8
V
DD2
7
V
OUT+
+
-
+
-
6
V
OUT-
5
GND2
GND1
4
SHIELD
CAUTION: It is advised that normal static precautions be taken
in handling and assembly of this component to prevent dam-
age and /or degradation which may be induced by ESD.
Ordering Information
HCPL-7800A = ±1% Gain Tol.; Mean Gain = 8.00
HCPL-7800 = ±3% Gain Tol.; Mean Gain = 8.00
Specify Part Number followed by Option Number (if desired).
Example:
Option: #YYYY
No Option = Standard DIP package, 50 per tube
300 = Surface Mount Option
500 = Tape/Reel Packaging Option, 1k min. per reel
XXXE = Lead Free Option
Remarks: The notation “#” is used for existing products, while (new) products launched since 15th July 2001 and
lead free option will use “-”
Package Outline Drawings
Standard DIP Package
9.80 ± 0.25
(0.386 ± 0.010)
8
7
A 7800
YYWW
1
1.19 (0.047) MAX.
2
3
4
1.78 (0.070) MAX.
6.35 ± 0.25
(0.250 ± 0.010)
7.62 ± 0.25
(0.300 ± 0.010)
6
5
DATE CODE
3.56 ± 0.13
(0.140 ± 0.005)
4.70 (0.185) MAX.
0.51 (0.020) MIN.
2.92 (0.115) MIN.
5˚ TYP.
0.20 (0.008)
0.33 (0.013)
1.080 ± 0.320
(0.043 ± 0.013)
0.65 (0.025) MAX.
2.54 ± 0.25
(0.100 ± 0.010)
DIMENSIONS IN MILLIMETERS AND (INCHES).
NOTE: FLOATING LEAD PROTRUSION IS 0.5 mm (20 mils) MAX.
Note:
Initial or continued variation in the color of the HCPL-7800(A)’s white mold compound is normal and does not affect device performance or
reliability.
Gull Wing Surface Mount Option 300
LAND PATTERN RECOMMENDATION
9.80 ± 0.25
(0.386 ± 0.010)
8
7
6
5
1.016 (0.040)
A 7800
YYWW
1
2
3
4
6.350 ± 0.25
(0.250 ± 0.010)
10.9 (0.430)
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)
0.20 (0.008)
0.33 (0.013)
1.080 ± 0.320
(0.043 ± 0.013)
2.54
(0.100)
BSC
DIMENSIONS IN MILLIMETERS (INCHES).
TOLERANCES (UNLESS OTHERWISE SPECIFIED):
0.635 ± 0.130
(0.025 ± 0.005)
0.635 ± 0.25
(0.025 ± 0.010)
12˚ NOM.
xx.xx = 0.01
xx.xxx = 0.005
LEAD COPLANARITY
MAXIMUM: 0.102 (0.004)
NOTE: FLOATING LEAD PROTRUSION IS 0.5 mm (20 mils) MAX.
Maximum Solder Reflow Thermal Profile
300
PREHEATING RATE 3˚C + 1˚C/–0.5˚C/SEC.
REFLOW HEATING RATE 2.5˚C ± 0.5˚C/SEC.
PEAK
TEMP.
245˚C
PEAK
TEMP.
240˚C
200
PEAK
TEMP.
230˚C
TEMPERATURE (˚C)
2.5˚C ± 0.5˚C/SEC.
160˚C
150˚C
140˚C
3˚C + 1˚C/–0.5˚C
30
SEC.
30
SEC.
SOLDERING
TIME
200˚C
100
PREHEATING TIME
150˚C, 90 + 30 SEC.
50 SEC.
TIGHT
TYPICAL
LOOSE
0
50
ROOM TEMPERATURE
0
100
TIME (SECONDS)
150
200
250
Recommended Pb-Free IR Profile
tp
Tp
217 ˚C
TL
Tsmax
Tsmin
260 +0/-5 ˚C
TIME WITHIN 5 ˚C of ACTUAL
PEAK TEMPERATURE
20-40 SEC.
TEMPERATURE (˚C)
RAMP-UP
3 ˚C/SEC. MAX.
150 - 200 ˚C
RAMP-DOWN
6 ˚C/SEC. MAX.
ts
PREHEAT
60 to 180 SEC.
25
t 25 ˚C to PEAK
tL
60 to 150 SEC.
TIME (SECONDS)
NOTES:
THE TIME FROM 25 ˚C to PEAK TEMPERATURE = 8 MINUTES MAX.
Tsmax = 200 ˚C, Tsmin = 150 ˚C
Regulatory Information
The HCPL-7800(A) 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 Vrms.
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 VDE 0110/1.89, Table 1
for rated mains voltage 300 Vrms
for rated mains voltage 450 Vrms
for rated mains voltage 600 Vrms
Climatic Classification
Pollution Degree (DIN VDE 0110/1.89)
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:
Symbol
Characteristic
I-IV
I-III
I-II
55/100/21
2
891
1670
1336
6000
Unit
V
IORM
V
PR
V
PR
V
IOTM
V
PEAK
V
PEAK
V
PEAK
V
PEAK
T
S
I
S,INPUT
P
S,OUTPUT
R
S
800
OUTPUT POWER - P
S
, INPUT CURRENT - I
S
700
600
500
400
300
200
100
0
0
175
400
600
>10
9
°C
mA
mW
Ω
1. Insulation characteristics are guaranteed only within the safety maximum ratings which
must be ensured by protective circuits within the application. Surface Mount Classification
is Class A in accordance with CECC00802.
2. Refer to the optocoupler section of the Isolation and Control Components Designer’s Cata-
log, 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 PS and IS on ambient temperature.
P S (mW)
I S (mA)
25
50
75
100
125
150
175
200
T
A
- CASE TEMPERATURE -
o
C
