DA101MC Datasheet, PDF (1/3 Pages) Murata Manufacturing Co., Ltd. – Transformers for Digital Audio Data Transmission

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DA100 Series
Transformers for Digital Audio Data Transmission
FEATURES
n RoHS compliant
n Compatible with leading chip sets
n 2kVrms isolation
n Industry-standard pinout
n Surface mount option
n UL 94 V-0 package materials
n Low profile
n Suitable for both 75 & 110Ω circuits
n Toroidal construction
n Compliant with AES/EBU standards
n Fully encapsulated
SELECTION GUIDE
Order Code
DA101C
1:1
DA102C
1:1
DA103C
1:1
Primary
Inductance
mH
1.00 - 2.06
Max.
Leakage
Inductance
(100kHz, 10mV)
μH
Vμs dB
0.22
15 46.80
dB
52.10
2.00 - 3.90
0.39
20 40.40 49.70
4.00 - 7.75
0.91
28 36.30 46.40
Isolation
(Flash tested
for 1 second)
Vrms
2000
ORDER CODE DETAILS
Order Code
DAXXXC
DAXXXMC
DAXXXMC-R
Package Type
6 Pin DIL
6 Pin SM
6 Pin SM
Packaging Type
Tube
Tube
Tape & Reel
Quantity
50
50
500
ABSOLUTE MAXIMUM RATINGS
Operating free air temperature range
0°C to 70°C
DESCRIPTION
The Digital Audio Range of transformers is
designed to improve the balance of transmitter
and receiver circuitry in hi-fi equipment,
video games and other applications requiring
high-performance digital audio transmission.
Compliant with AES/EBU recommendations for the
digital audio interface, offering optimised shunt
capacitance between primary and secondary
windings. Capable of operating over the audio
data rate frequency range, providing isolation from
50-60Hz noise.
Surface-mount parts
The surface-mount (M suffix) products are not
recommended for new designs. For existing designs,
however, Murata Power Solutions will continue to
manufacture and fully support these parts.
For recommended alternatives please refer to the
DA100J Series datasheet.
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Storage temperature range
–40°C to 125°C
All specifications typical at T_A =25°C
TECHNICAL NOTES
ISOLATION VOLTAGE
REPEATED HIGH-VOLTAGE ISOLATION TESTING
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Volt-
age’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’
are all terms that relate to the same thing, a test voltage,
applied for a specified time, across a component designed
to provide electrical isolation, to verify the integrity of that
isolation.
All products in this series are 100% production tested at
their stated isolation voltage.
A question commonly asked is, “What is the continuous
voltage that can be applied across the part in normal opera-
tion?”
For a part holding no specific agency approvals both input
and output should normally be maintained within SELV limits
i.e. less than 42.4V peak, or 60VDC. The isolation test volt-
age represents a measure of immunity to transient voltages
and the part should never be used as an element of a safety
isolation system. The part could be expected to function cor-
rectly with several hundred volts offset applied continuously
across the isolation barrier; but then the circuitry on both
sides of the barrier must be regarded as operating at an
unsafe voltage and further isolation/insulation systems must
form a barrier between these circuits and any user-acces-
sible circuitry according to safety standard requirements.
It is well known that repeated high-voltage isolation
testing of a barrier component can actually degrade
isolation capability, to a lesser or greater degree
depending on materials, construction and environ-
ment. This series has toroidal isolation transformers,
with no additional insulation between primary and
secondary windings of enameled wire. While parts
can be expected to withstand several times the
stated test voltage, the isolation capability does de-
pend on the wire insulation. Any material, including
this enamel (typically polyurethane) is susceptible
to eventual chemical degradation when subject to
very high applied voltages thus implying that the
number of tests should be strictly limited. We there-
fore strongly advise against repeated high voltage
isolation testing, but if it is absolutely required, that
the voltage be reduced by 20% from specified test
voltage.
This consideration equally applies to agency recog-
nized parts rated for better than functional isolation
where the wire enamel insulation is always supple-
mented by a further insulation system of physical
spacing or barriers.
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