DIX4192 datasheet(53/71 Pages) TI2

53 / 71 page

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DIX4192

www.ti.com

SBFS031F – FEBRUARY 2006 – REVISED SEPTEMBER 2016

Product Folder Links: DIX4192

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Application Information (continued)

Figure 71. Recommended Power-Supply Connections

10.1.1 Digital Audio Transformer Vendors

Transformers are shown in this data sheet for both receiver and transmitter balanced and unbalanced line

interface implementations. For the Texas Instruments Pro Audio evaluation modules, transformers from Scientific

Conversion are used. In addition to Scientific Conversion, there are other vendors that offer transformer products

for digital audio interface applications. Please refer to the following manufacturer websites for details regarding

their products and services. Other transformer vendors may also be available by searching catalog and/or

Internet resources.

•

Scientific Conversion: http://scientificonversion.com

•

Schott Corporation: http://schottcorp.com

•

Pulse Engineering: http://pulseeng.com

10.1.2 Receiver Input Interfacing

This section details the recommended interfaces for the DIX4192 line receiver inputs. Balanced and unbalanced

line interfaces, in addition to optical receiver and external logic interfacing, are discussed.

For professional digital audio interfaces, 110-

Ω balanced line interfaces are either required or preferred.

Transformer coupling is commonly employed to provide isolation and to improve common-mode noise rejection.

Figure 72 shows the recommended transformer-coupled balanced line receiver interface for the DIX4192. The

transformer is specified for a 1:1 turn ratio, and must exhibit low inter-winding capacitance for best performance.

Due to the DC bias on the line receiver inputs, 0.1-μF capacitors are used for AC-coupling the transformer to the

line receiver inputs. On the line side of the transformer, an optional 0.1-μF capacitor is shown for cases where a

DC bias may be applied at the transmitter side of the connection. The coupling capacitors must be surface-mount

ceramic chip type with an X7R or C0G dielectric.

DIX4192 Datasheet(PDF) 53 Page - Texas Instruments

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