The ISO103 isolation amplifier provides both signal
and power across an isolation barrier. The ceramic
non-hermetic hybrid package with side-brazed pins
contains a transformer-coupled DC/DC converter and
a capacitor-coupled signal channel.
Extra power is available on the isolated input side for
external input conditioning circuitry. The converter is
protected from shorts to ground with an internal cur-
rent limit, and the soft-start feature limits the initial
currents from the power source. Multiple-channel syn-
chronization can be accomplished by applying a TTL
clock signal to paralleled Sync pins. The Enable con-
*Ground if not used
trol is used to turn off transformer drive while keeping
the signal channel demodulator active. This feature
provides a convenient way to reduce quiescent current
for low power applications.
The wide barrier pin spacing and internal insulation
allow for the generous 1500Vrms continuous rating.
Reliability is assured by 100% barrier breakdown
testing that conforms to UL1244 test methods. Low
barrier capacitance minimizes AC leakage currents.
These specifications and built-in features make the
ISO103 easy to use, as well as providing for compact
PC board layouts.
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
NOTE: (1) Conforms to UL1244 test methods. 100% tested at 1500Vrms for 1 minute. (2) If using external synchronization with a TTL-level clock, frequency should
be between 1.2MHz and 2MHz with a duty-cycle greater than 25%.
®
ISO103
2
ABSOLUTE MAXIMUM RATINGS
Supply Without Damage ....................................................................
±18V
V
IN
, Sense Voltage .............................................................................
±50V
Com 1 to Gnd 1 or Com 2 to Gnd 2 ..............................................
±200mV
Enable, Sync ........................................................................... 0V to +V
CC2
Continuous Isolation Voltage ..................................................... 1500Vrms
Junction Temperature ...................................................................... 150°C
Storage Temperature ...................................................... –25°C to +125°C
Lead Temperature,10s .................................................................... 300°C
Output Short to Gnd 2 Duration ............................................... Continuous
±V
CC1
to Gnd 1 Duration .......................................................... Continuous
PIN CONFIGURATION
+V
C
+V
CC1
–V
CC1
1
2
3
24 Ps Gnd
23 Gnd 1
22 V
IN
21 Com 1
–V
CC1
4
ELECTROSTATIC
DISCHARGE SENSITIVITY
Any integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degrada-
tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet
published specifications.
Com 2 9
V
OUT
10
Sense 11
Gnd 2 12
16 –V
CC2
15 Sync*
14 +V
CC2
13 Enable
*Operation requires this pin be grounded or driven with TTL levels.
PACKAGE/ORDERING INFORMATION
PACKAGE
DRAWING
NUMBER
(1)
231
SPECIFIED
TEMPERATURE
RANGE
–25°C to +85°C
PACKAGE
MARKING
ORDERING
NUMBER
(2)
TRANSPORT
MEDIA
PRODUCT
ISO103
PACKAGE
24-Pin DIP
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/) are
available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “ISO103/2K5” will get a single 2500-
piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
After the circuit board was proofed, I found that the inductor squeaked when I tested it. Is it because the PCB board is not properly laid out? I hope you can give me some advice. Thank you...
[i=s]This post was last edited by paulhyde on 2014-9-15 09:34[/i] [b][font=宋体]You may all be new here and have no money. We have all been busy recently. So some information should be shared. I can slo...
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