AGILENT HCPL-6550

Hermetically Sealed, Transistor
Output Optocouplers for Analog and
Digital Applications
Technical Data
Agilent 4N55*, 5962-87679, HCPL-553X, HCPL-653X,
HCPL-257K, HCPL-655X, 5962-90854, HCPL-550X
*See matrix for available extensions.
Features
• Dual Marked with Device Part
Number and DSCC Drawing
Number
Description
Applications
These units are single, dual
and quad channel, hermetically
sealed optocouplers. The
products are capable of
operation and storage over the
full military temperature range
and can be purchased as
either standard product or
with full MIL-PRF-38534 Class
Level H or K testing or from
the appropriate DSCC Drawing.
All devices are manufactured
and tested on a MIL-PRF38534 certified line and are
included in the DSCC Qualified
Manufacturers List QML-38534
for Hybrid Microcircuits.
• Military and Space
• Manufactured and Tested on a
MIL-PRF-38534 Certified Line
• High Reliability Systems
• QML-38534, Class H and K
• Vehicle Command, Control, Life
Critical Systems
• Five Hermetically Sealed Package
Configurations
• Line Receivers
• Switching Power Supply
• Performance Guaranteed, Over
-55°C to +125°C
• Voltage Level Shifting
• High Speed: Typically 400 kBit/s
• Analog Signal Ground Isolation
(see Figures 7, 8, and 13)
• 9 MHz Bandwidth
• Isolated Input Line Receiver
• 2-18 Volt VCC Range
• Isolated Output Line Driver
• 1500 Vdc Withstand Test Voltage
• Logic Ground Isolation
• High Radiation Immunity
• Harsh Industrial Environments
• 6N135, 6N136, HCPL-2530/2531,
Function Compatibility
• Isolation for Test Equipment
Systems
• Open Collector Output
• Reliability Data
The connection of a 0.1 µF bypass capacitor between VCC and GND is recommended.
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.
Each channel contains a
GaAsP light emitting diode
which is optically coupled to
an integrated photon detector.
Separate connections for the
photodiodes and output
transistor collectors improve
the speed up to a hundred
times that of a conventional
phototransistor optocoupler by
reducing the base-collector
capacitance.
These devices are suitable for
wide bandwidth analog
applications, as well as for
interfacing TTL to LSTTL or
CMOS. Current Transfer Ratio
(CTR) is 9% minimum at IF =
16 mA. The 18 V VCC
capability will enable the
designer to interface any TTL
family to CMOS. The
availability of the base lead
allows optimized gain/
bandwidth adjustment in
analog applications. The
shallow depth of the IC
photodiode provides better
radiation immunity than
conventional phototransistor
couplers.
These products are also
available with the transistor
base node not connected to
improve common mode noise
immunity and ESD
susceptibility. In addition,
higher CTR minimums are
available by special request.
Package styles for these parts
are 8 and 16 pin DIP through
hole (case outlines P and E
respectively), 16 pin DIP flat
pack (case outline F), and
leadless ceramic chip carrier
(case outline 2). Devices may
be purchased with a variety of
lead bend and plating options,
see Selection Guide Table for
details. Standard Microcircuit
Drawing (SMD) parts are
available for each package and
lead style.
Because the same functional
die (emitters and detectors)
are used for each channel of
each device listed in this data
sheet, absolute maximum
ratings, recommended
operating conditions, electrical
specifications, and performance
characteristics shown in the
figures are identical for all
parts. Occasional exceptions
exist due to package variations
and limitations and are as
noted. Additionally, the same
package assembly processes
and materials are used in all
devices. These similarities give
justification for the use of data
obtained from one part to
represent other part’s
performance for die related
reliability and certain limited
radiation test results.
Truth Table
(Positive Logic)
Input
Output
On (H)
L
Off (L)
H
Functional Diagram
Multiple Channel Devices
Available
V CC
VB
VO
GND
2
Selection Guide–Package Styles and Lead Configuration Options
16 Pin DIP
8 Pin DIP
8 Pin DIP
Lead Style
Through Hole
Through Hole
Through Hole
Channels
2
1
2
4
2
None
None
VCC GND
VCC GND
None
4N55(1)
HCPL-5500
HCPL-5530
HCPL-6550
HCPL-6530
MIL-PRF-38534 Class H
4N55/883B
HCPL-5501
HCPL-5531
HCPL-6551
HCPL-6531
MIL-PRF-38534 Class K
HCPL-257K
HCPL-550K
HCPL-553K
HCPL-655K
HCPL-653K
Standard Lead Finish
Gold Plate
Gold Plate
Gold Plate
Gold Plate
Solder Pads
Solder Dipped*
Option 200
Option 200
Option 200
Butt Joint/Gold Plate
Option 100
Option 100
Option 100
Gull Wing/Soldered*
Option 300
Option 300
Option 300
Prescript for all below
5962-
5962-
5962-
5962-
5962-
Either Gold or Soldered
8767901EX
9085401HPX
8767902PX
8767904FX
87679032X
Gold Plate
8767901EC
9085401HPC
8767902PC
8767904FC
Solder Dipped*
8767901EA
9085401HPA
8767902PA
Butt Joint/Gold Plate
8767901UC
9085401HYC
8767902YC
Butt Joint/Soldered*
8767901UA
9085401HYA
8767902YA
Gull Wing/Soldered*
8767901TA
9085401HXA
8767902XA
Prescript for all below
5962-
5962-
5962-
5962-
5962-
Either Gold or Soldered
8767905KEX
9085401KPX
8767906KPX
8767908KFX
8767907K2X
Gold Plate
8767905KEC
9085401KPC
8767906KPC
8767908KFC
Solder Dipped*
8767905KEA
9085401KPA
8767906KPA
Butt Joint/Gold Plate
8767905KUC
9085401KYC
8767906KYC
Butt Joint/Soldered*
8767905KUA
9085401KYA
8767906KYA
Gull Wing/Soldered*
8767905KTA
9085401KXA
8767906KXA
Package
Common Channel Wiring
16 Pin Flat
Pack
20 Pad LCCC
Unformed Leads Surface Mount
Agilent Part No. and Options
Commercial
Class H SMD Part #
87679032A
Class K SMD Part #
1. JEDEC registered part.
* Solder contains lead
3
8767907K2A
8 Pin Ceramic DIP Single Channel Schematic
2
ANODE
IF
+
VF
CATHODE
-
ICC
8
IB
7
IO
6
V CC
VB
VO
3
5
GND
Note, base is pin 7.
Functional Diagrams
16 Pin DIP
Through Hole
2 Channels
8 Pin DIP
Through Hole
1 Channel
8 Pin DIP
Through Hole
2 Channels
16 Pin Flat Pack
Unformed Leads
4 Channels
20 Pad LCCC
Surface Mount
2 Channels
15 14
1
V B1
16
2
V CC1
15
1
1
V CC
V O1
VB
GND
V CC
7
V O1
2
V CC
6
V O2
3
V O1
GND
5
4
GND
V O2
GND 2
V O2
13
5
V O3
12
5
V O1
V CC1
3
V B1
GND 1
5
V B2
12
6
V CC2
11
6
V O4
11
7
GND
10
7
GND
10
8
V O2
9
8
7
8
9
Note: 8 pin DIP and flat pack devices have common VCC and ground. 16 pin DIP and LCCC (leadless ceramic chip carrier) packages have isolated
channels with separate VCC and ground connections.
Outline Drawings
16 Pin DIP Through Hole, 2 Channels
20.06 (0.790)
20.83 (0.820)
8.13 (0.320)
MAX.
0.89 (0.035)
1.65 (0.065)
4.45 (0.175)
MAX.
0.51 (0.020)
MIN.
3.81 (0.150)
MIN.
2.29 (0.090)
2.79 (0.110)
0.51 (0.020)
MAX.
NOTE: DIMENSIONS IN MILLIMETERS (INCHES).
4
0.20 (0.008)
0.33 (0.013)
13
12
14
2
4
V B2
19
20
6
13
4
15
7
3
V OUT
V CC2
8
14
3
4
1
2
2
3
8
16
10
9
Leaded Device Marking
Agilent DESIGNATOR
Agilent P/N
DSCC SMD*
DSCC SMD*
PIN ONE/
ESD IDENT
Leadless Device Marking
A QYYWWZ
XXXXXX
XXXXXXX
XXX XXX
50434
COMPLIANCE INDICATOR,*
DATE CODE, SUFFIX (IF NEEDED)
COUNTRY OF MFR.
Agilent CAGE CODE*
Agilent DESIGNATOR
Agilent P/N
PIN ONE/
ESD IDENT
COUNTRY OF MFR.
A QYYWWZ
XXXXXX
XXXX
XXXXXX
XXX 50434
COMPLIANCE INDICATOR,*
DATE CODE, SUFFIX (IF NEEDED)
DSCC SMD*
DSCC SMD*
Agilent CAGE CODE*
* QUALIFIED PARTS ONLY
* QUALIFIED PARTS ONLY
Outline Drawings
16 Pin Flat Pack, 4 Channels
7.24 (0.285)
6.99 (0.275)
2.29 (0.090)
MAX.
1.27 (0.050)
REF.
11.13 (0.438)
10.72 (0.422)
0.46 (0.018)
0.36 (0.014)
8.13 (0.320)
MAX.
2.85 (0.112)
MAX.
0.88 (0.0345)
MIN.
0.89 (0.035)
0.69 (0.027)
5.23
(0.206)
MAX.
0.31 (0.012)
0.23 (0.009)
9.02 (0.355)
8.76 (0.345)
NOTE: DIMENSIONS IN MILLIMETERS (INCHES).
20 Terminal LCCC Surface Mount, 2 Channels
8 Pin DIP Through Hole, 1 and 2 Channel
8.70 (0.342)
9.10 (0.358)
9.40 (0.370)
9.91 (0.390)
0.76 (0.030)
1.27 (0.050)
4.95 (0.195)
5.21 (0.205)
1.78 (0.070)
2.03 (0.080)
1.02 (0.040) (3 PLCS)
1.14 (0.045)
1.40 (0.055)
8.70 (0.342)
9.10 (0.358)
4.95 (0.195)
5.21 (0.205)
TERMINAL 1 IDENTIFIER
2.16 (0.085)
0.64
(0.025)
(20 PLCS)
7.16 (0.282)
7.57 (0.298)
4.32 (0.170)
MAX.
0.51 (0.020)
MIN.
METALIZED
CASTILLATIONS (20 PLCS)
1.78 (0.070)
2.03 (0.080)
8.13 (0.320)
MAX.
3.81 (0.150)
MIN.
0.51 (0.020)
1.52 (0.060)
2.03 (0.080)
2.29 (0.090)
2.79 (0.110)
0.51 (0.020)
MAX.
NOTE: DIMENSIONS IN MILLIMETERS (INCHES).
NOTE: DIMENSIONS IN MILLIMETERS (INCHES).
SOLDER THICKNESS 0.127 (0.005) MAX.
5
0.20 (0.008)
0.33 (0.013)
7.36 (0.290)
7.87 (0.310)
Hermetic Optocoupler Options
Option
100
Description
Surface mountable hermetic optocoupler with leads trimmed for butt joint assembly. This option is
available on commercial and hi-rel product in 8 and 16 pin DIP (see drawings below for details).
4.32 (0.170)
MAX.
0.51 (0.020)
MIN.
1.14 (0.045)
1.40 (0.055)
0.51 (0.020)
MAX.
2.29 (0.090)
2.79 (0.110)
4.32 (0.170)
MAX.
0.51 (0.020)
MIN.
1.14 (0.045)
1.40 (0.055)
2.29 (0.090)
2.79 (0.110)
0.20 (0.008)
0.33 (0.013)
0.51 (0.020)
MAX.
7.36 (0.290)
7.87 (0.310)
NOTE: DIMENSIONS IN MILLIMETERS (INCHES).
200
Lead finish is solder dipped rather than gold plated. This option is available on commercial and hi-rel
product in 8 and 16 pin DIP. DSCC drawing part numbers contain provisions for lead finish. All
leadless chip carrier devices are delivered with solder dipped terminals as a standard feature.
300
Surface mountable hermetic optocoupler with leads cut and bent for gull wing assembly. This option
is available on commercial and hi-rel product in 8 and 16 pin DIP (see drawings below for details).
This option has solder dipped leads.
4.57 (0.180)
MAX.
0.51 (0.020)
MIN.
1.40 (0.055)
1.65 (0.065)
0.51 (0.020)
MAX.
2.29 (0.090)
2.79 (0.110)
4.57 (0.180)
MAX.
0.51 (0.020)
MIN.
2.29 (0.090)
2.79 (0.110)
1.40 (0.055)
1.65 (0.065)
4.57 (0.180)
MAX.
5˚ MAX.
0.51 (0.020)
MAX.
NOTE: DIMENSIONS IN MILLIMETERS (INCHES).
6
0.20 (0.008)
0.33 (0.013)
9.65 (0.380)
9.91 (0.390)
Absolute Maximum Ratings
No derating required up to +125° C.
Symbol
Min.
Max.
Units
Storage Temperature Range
TS
-65°
+150°
C
Operating Ambient Temperature
TA
-55°
+125°
C
Junction Temperature
TJ
+175°
C
Case Temperature
TC
+170°
C
260° for 10 s
C
Parameter
Lead Solder Temperature (1.6 mm below seating plane)
Average Input Forward Current
IF AVG
20
mA
Peak Forward Input Current (each channel, ≤ 1 ms duration)
IFPK
40
mA
Reverse Input Voltage
BVR
See Electrical Characteristics
Average Output Current, each channel
IO
8
mA
Peak Output Current, each channel
IO
16
mA
Supply Voltage
VCC
-0.5
20
V
Output Voltage
VO
-0.5
20
V
Input Power Dissipation, each channel
36
mW
Output Power Dissipation, each channel
50
mW
200
mW
VEBO
3
V
IB
5
mA
Package Power Dissipation, each channel
PD
Single Channel 8 Pin, Dual Channel 16 Pin, and LCCC Only
Emitter Base Reverse Voltage
Base Current, each channel
ESD Classification
(MIL-STD-883, Method 3015)
4N55, 4N55/883B, HCPL-257K, HCPL-5500/01/0K, and HCPL-6530/31/3K
(∆), Class 1
HCPL-5530/31/3K, HCPL-6550/51/5K
(Dot), Class 3
Recommended Operating Conditions
Parameter
Symbol
Min.
Max.
Units
250
µA
Input Current, Low Level
IFL
Input Current, High Level
IFH
12
20
mA
Supply Voltage, Output
VCC
2
18
V
7
Electrical Characteristics
TA = -55° C to +125° C, unless otherwise specified. See Note 12.
Parameter
Symbol
Group A,
Subgroup
Test Conditions
CTR
1, 2, 3
VO = 0.4V, IF = 16 mA, VCC = 4.5V
IOH
1, 2, 3
IF = 0,
IF (other channels) = 20 mA
VO = VCC = 18 V
5
IOLeak
1, 2, 3
IF = 250 µA,
IF (other channels) = 20 mA,
VO = VCC = 18 V
30
Input-Output Insulation Leakage
Current
II-O
1
VI-O = 1500 Vdc,
RH ≤ 65%,
TA = 25°C, t = 5 s
Input Forward Voltage
VF
1, 2, 3
IF = 20 mA
BVR
1, 2, 3
IR = 10 µA
Current Transfer Ratio
Logic High Output Current
Output Leakage Current
Limits
Units
Fig.
Notes
%
2, 3
1, 2, 10
100
µA
4
1
250
µA
4
1
1.0
µA
1.8
V
Min. Typ.* Max.
9
20
1.55
3, 9
1
1.9
Reverse Breakdown Voltage
5
1, 13
V
1, 14
3
Logic High Supply
Current
Logic Low Supply
Current
µA
0.1
10
Dual
Channel
VCC = 18 V, IF = 0 mA (all channels)
0.2
20
1,4
Quad
Channel
VCC = 18 V, IF = 0 mA (all channels)
0.4
40
1
VCC = 18 V, IF = 20 mA
35
200
Dual
Channel
VCC = 18 V, IF1 = IF2 = 20 mA
70
400
1, 4
Quad
Channel
VCC = 18 V, IF1 = IF2 = IF3 = IF4 = 20
mA
140
800
1
RL = 8.2 kΩ,
CL = 50 pF,
IF = 16 mA,
VCC = 5 V
1.0
6.0
0.4
2.0
Single
Channel
ICCH
ICCL
Propagation Delay Time to Logic
High at Output
tPLH
Propagation Delay Time to Logic
Low at Output
tPHL
*All typical values are at VCC = 5 V, TA = 25°C.
8
1, 13
VCC = 18 V, IF = 0 mA
Single
Channel
1, 2, 3
1, 14
1, 2, 3
9, 10, 11
1
µA
µs
1
6, 9
1, 6
Typical Characteristics
All typical values are at TA = 25°C, VCC = 5 V, unless otherwise specified.
Symbol
Test Conditions
Typ.
Units
CIN
VF = 0 V, f = 1 MHz
60
pF
1
∆VF/∆TA
IF = 20 mA
-1.5
mV/°C
1
Resistance (Input-Output)
RI-O
VI-O = 500 V
1012
Ω
3
Capacitance (Input-Output)
C I-O
f = 1 MHz
1.0
pF
1, 11
Transistor DC Current Gain
hFE
VO = 5 V, IO = 3 mA
250
-
1
Small Signal Current Transfer Ratio
∆IO/∆IF
VCC = 5 V, VO = 2 V
21
%
7
1
Common Mode Transient Immunity
at Logic High Level Output
|CM H|
IF = 0 mA, RL = 8.2 kΩ,
VO (min) = 2.0 V,
VCM = 10 VP-P
1000
V/µs
10
1, 7
Common Mode Transient Immunity
at Logic Low Level Output
|CM L|
IF = 16 mA, RL = 8.2 kΩ,
VO (max) = 0.8 V,
VCM = 10 VP-P
-1000
V/µs
10
1, 7
9
MHz
8
8
Parameter
Input Capacitance
Input Diode Temperature Coefficient
Bandwidth
BW
Fig.
Notes
Multi-Channel Product Only
Parameter
Symbol
Test Conditions
Typ.
Units
Notes
Input-Input Insulation Leakage Current
II-I
RH ≤ 65%, VI-I = 500 V, t = 5 s
1
pA
5, 9
Resistance (Input-Input)
RI-I
VI-I = 500 V
1012
Ω
5
Capacitance (Input-Input)
CI-I
f=1 MHz
0.8
pF
5
Notes:
1. Each channel of a multi-channel device.
2. Current Transfer Ratio is defined as the ratio
of output collector current, IO, to the
forward LED input current, IF, times 100%.
CTR is known to degrade slightly over the
unit’s lifetime as a function of input current,
temperature, signal duty cycle, and system
on time. Refer to Application Note 1002 for
more detail. ln short, it is recommended that
designers allow at least 20-25% guardband
for CTR degradation.
3. All devices are considered two-terminal
devices; measured between all input leads
or terminals shorted together and all output
leads or terminals shorted together.
4. The 4N55, 4N55/883B, HCPL-257K, HCPL6530, HCPL-6531, and HCPL-653K dual
channel parts function as two independent
single channel units. Use the single channel
parameter limits. IF = 0 mA for channel
under test and I F = 20 mA for other
channels.
5. Measured between adjacent input pairs
shorted together for each multichannel
device.
9
6. tPHL propagation delay is measured from the
50% point on the leading edge of the input
pulse to the 1.5 V point on the leading edge
of the output pulse. The tPLH propagation
delay is measured from the 50% point on the
trailing edge of the input pulse to the 1.5 V
point on the trailing edge of the output
pulse.
7. CML is the maximum rate of rise of the
common mode voltage that can be
sustained with the output voltage in the
logic low state (VO < 0.8 V). CMH is the
maximum rate of fall of the common mode
voltage that can be sustained with the
output voltage in the logic high state (VO >
2.0 V).
8. Bandwidth is the frequency at which the ac
output voltage is 3 dB below the low
frequency asymptote. For the HCPL-5530
the typical bandwidth is 2 MHz.
9. This is a momentary withstand test, not an
operating condition.
10. Higher CTR minimums are available to
support special applications.
11. Measured between each input pair shorted
together and all output connections for that
channel shorted together.
12. Standard parts receive 100% testing at 25°C
(Subgroups 1 and 9). SMD and 883B parts
receive 100% testing at 25, 125, and -55°C
(Subgroups 1 and 9, 2 and 10, 3 and 11,
respectively).
13. Not required for 4N55, 4N55/883B, HCPL257K, 5962-8767901, and 5962-8767905
types.
14. Required for 4N55, 4N55/883B, HCPL-257K,
5962-8767901, and 5962-8767905 types only.
IOH - LOGIC HIGH OUTPUT CURRENT - µA
Figure 1. Input Diode Forward Current vs.
Forward Voltage.
100
10
1
Figure 2. DC and Pulsed Transfer
Characteristic.
Figure 3. Normalized Current Transfer Ratio
vs. Input Diode Forward Current.
Figure 5. Logic Low Supply Current vs. Input
Diode Forward Current.
Figure 6. Propagation Delay vs. Temperature.
IF = 250 µA,
IF (OTHER CHANNELS) = 20 mA
IF = 0 µA,
IF (OTHER CHANNELS) = 20 mA
IF = IF (OTHER CHANNELS)
= 0 mA
0.1
VCC = VO = 18 V
0.01
0.001
-60 -40 -20 0
20 40 60 80 100 120 140
TA - TEMPERATURE - ˚C
Figure 4. Logic High Output Current vs.
Temperature.
Figure 7. Normalized Small Signal Current
Transfer Ratio vs. Quiescent Input Current.
10
+12 V
D.U.T.
+12 V
0.1 µF
0.1 µF
1.2 k Ω
V CC
2.1 k Ω
Q1
V IN
VB
100 Ω
51 Ω
9.1 k Ω
VO
47 µF
15 k Ω
RF
1kΩ
Q3
0.01 µF
Q2
100 Ω
0.01 µF
VO
(1 M Ω, 12 pF
TEST INPUT)
470
Ω
GND
22 Ω
SINGLE CHANNEL TESTING,
INDEPENDENT VCC DEVICES
1N4150
TRIM FOR UNITY GAIN
Q 1 , Q 2 , Q 3 : 2N3904
TYPICAL LINEARITY = +3 % AT V IN = 1 V P-P
TYPICAL SNR = 50 dB
TYPICAL R F = 375 Ω
TYPICAL V O dc = 3.8 V
TYPICAL IF = 9 mA
D.U.T.
20 k Ω
SET I F
AC INPUT
0.1 µF
560 Ω
100 Ω
+15
+15 V
V CC
100 Ω
VO
2N3053
1.6 Vdc
0.25 V P-P ac
GND
COMMON
V CC DEVICES
NORMALIZED RESPONSE - dB
+5 V
+10
PULSE GEN.
Z O = 50 Ω
t r = 5 ns
IF
D.U.T.
+5 V
V CC
RL
VO
IF MONITOR
100 Ω
C L * = 50 pF
GND
SINGLE CHANNEL
OR COMMON V CC DEVICES
10 % DUTY CYCLE
1/f < 100 µs
NOTES:
* C L INCLUDES PROBE AND STRAY WIRING CAPACITANCE.
BASE LEAD NOT CONNECTED.
Figure 9. Switching Test Circuit.*
*JEDEC Registered Data.
11
INDEPENDENT
V CC DEVICES
+5
0
-5
-10
COMMON V CC
DEVICES
-15
-20
0.1
Figure 8. Frequency Response.
T A = 25 ˚C
1.0
10
f - FREQUENCY - MHz
100
IF
B
D.U.T.
+5 V
V CC
RM
RL
A
VO
V FF
GND
SINGLE CHANNEL OR
COMMON V CC DEVICES
V CM
+
PULSE GEN.
NOTE: BASE LEAD NOT CONNECTED.
Figure 10. Test Circuit for Transient Immunity and Typical Waveforms.
V CC
5V
220 Ω
RL
D.U.T.
V CC
Logic Family
LSTTL
CMOS
Device No.
54LS14
CD40106BM
VCC
TTL
RL 5% Tolerance
LOGIC GATE
0.01 µF
EACH CHANNEL
Figure 11. Recommended Logic Interface.
V CC
VOC
D.U.T.*
VCC
(EACH INPUT)
-
V IN
0.1 µF
VO
GND
NOMINAL CONDITIONS
PER CHANNEL: IF = 20 mA
IO = 4 mA
ICC = 30 µA
NOTE: BASE LEAD NOT CONNECTED.
T A = +125 ˚C
Figure 12. Operating Circuit for Burn-In and
Steady State Life Tests. All Channels Tested
Simultaneously.
12
5V
15 V
18 kΩ *
8.2 kΩ
22 kΩ
*The equivalent output load resistance is affected by the LSTTL input current and is
approximately 8.2 kΩ. This is a worst case design which takes into account 25%
degradation of CTR. See App. Note 1002 to assess actual degradation and lifetime.
GND
+
5V
(EACH OUTPUT)
U1
+
+
R3
2
HCPL-5530
IF 1
V IN
1
8
2
7
3
6
4
5
OFFSET ADJUST
5kΩ
220 Ω
IC
1
IC
2
U3
+
IF 2
2
U2
+
-
R1
2.7 k Ω
R2
2.7 k Ω
R 4 1 kΩ
5 k Ω GAIN ADJUST
-15 V
U4
+
U 1 , U 2 , U 3 , U 4 , LM307
IC
IC
1
2
=K1
IF
IF
=K2
IF
IF
50 k Ω
V OUT
2
n1
1
R5
I CC
6 mA
´
1
n2
2
-15 V
´
2
Figure 13. Isolation Amplifier Application Circuit.
Description
Performance of Circuit
The schematic uses a
dualchannel, high-speed
optocoupler (HCPL-5530) to
function as a servo type dc
isolation amplifier. This circuit
operates on the principle that
two optocouplers will track
each other if their gain
changes by the same amount
over a specific operating
region.
• 1% linearity for 10 V peakto-peak dynamic range
13
• Gain drift: -0.03%/°C
• Offset Drift: ± 1 mV/°C
• 25 kHz bandwidth (limited
by Op-Amps U1, U2)
MIL-PRF-38534 Class H, Class K, and
DSCC SMD Test Program
Agilent’s Hi-Rel Optocouplers
are in compliance with MILPRF-38534 Classes H and K.
Class H and Class K devices
are also in compliance with
DSCC drawings 5962-87679,
and 5962-90854. Testing
consists of 100% screening and
quality conformance inspection
to MIL-PRF-38534.
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Data subject to change.
Copyright © 2004 Agilent Technologies, Inc.
December 10, 2004
5989-1659EN