DA100J Series

SM Transformers for Digital Audio Data Transmission

KMP_DA100JC_D01 Page 1 of 4

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For full details go to

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global/products/power/rohs

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FEATURES

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J-STD-020D reflow

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RoHS compliant

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Compatible with leading chip sets

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2kVrms isolation

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Industry-standard pinout

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Surface mount option

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UL 94 V-0 package materials

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Low profile

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Suitable for both 75 & 110Ω circuits

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Toroidal construction

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Compliant with AES/EBU standards

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.

For through hole versions see DA100 series

datasheet.

SELECTION GUIDE

Order Code

Primary

Inductance

(10kHz, 50mV)

Max.

Leakage

Inductance

(100kHz, 10mV)

Isolation

(Flash tested

for 1 second)

mH

μH

Vμs

dB

dB

Vrms

DA101JC

1:1

1.00 - 2.20

0.36

15

34.6

55.9

2000

DA102JC

1:1

2.00 - 4.40

0.65

20

38.8

52.4

DA103JC

1:1

3.20 - 8.50

0.91

28

34.9

48.5

ORDER CODE DETAILS

Order Code

Package Type

Packaging Type

Quantity

DAXXXJC

6 Pin SM

Tube

50

DAXXXJC-R

6 Pin SM

Tape & Reel

500

ABSOLUTE MAXIMUM RATINGS

Operating free air temperature range

–40°C to +85°C

Storage temperature range

–40°C to +125°C

TECHNICAL NOTES

ISOLATION

VOLTAGE

‘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.

REPEATED HIGH-VOLTAGE ISOLATION TESTING

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 enamelled 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-

nised 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.

All specifications typical at T

A =25°C