IC PROCESSOR AUDIO DGTL SO-28

 

TDA7348D013TR

Manufacturer Part NumberTDA7348D013TR
DescriptionIC PROCESSOR AUDIO DGTL SO-28
ManufacturerSTMicroelectronics
TypeAudio Processor
TDA7348D013TR datasheets

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Specifications of TDA7348D013TR

Mounting TypeSurface MountPackage / Case28-SOIC (7.5mm Width)
Lead Free Status / RoHS StatusLead free / RoHS CompliantApplications-
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Features
●
Input multiplexer
–
Three stereo and one mono inputs
–
Selectable input gain for optimal
adaptation to different sources
●
Volume control in 0.3db steps including gain
up to 20dB
●
Zero crossing mute and direct mute
●
Pause detector with programmable threshold
●
Soft mute controlled by software or hardware
PIN
●
Bass and treble control
●
Four speaker attenuators
–
Four independent speakers control in
1.25dB steps for balance and fader
facilities
–
Independent mute function
●
All functions programmable via serial I
Description
The TDA7348 is an upgrade of the TDA7318
audioprocessor.
Thanks to the used BIPOLAR/CMOS technology,
very low distortion, low noise and DC-stepping
are obtained. Due to a highly linear signal
processing, using CMOS-switching techniques
Order codes
Part number
TDA7348D
TDA7348D013TR
(1)
E-TDA7348D
(1)
E-TDA7348D013TR
1. This device is Pb-free Ecopack , see
January 2007
Digitally controlled audio processor
instead of standard bipolar multipliers, very low
distortion and very low noise are obtained Several
new features like softmute, zero-crossing mute
2
C bus
and pause detector are implemented.
The Soft Mute function can be activated in two
ways, either via the serial bus (bit D0, Mute Byte),
or directly on pin 22 through an I/O line of the
microcontroller
Very low DC stepping is obtained by use of a
BICMOS technology.
Package
SO-28
SO-28
SO-28
SO-28
Chapter 5
Package information.
Rev 3
TDA7348
SO-28
Packing
Tube
Tape and reel
Tube
Tape and reel
1/20
www.st.com
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TDA7348D013TR Summary of contents

  • Page 1

    ... CMOS-switching techniques Order codes Part number TDA7348D TDA7348D013TR (1) E-TDA7348D (1) E-TDA7348D013TR 1. This device is Pb-free Ecopack , see January 2007 Digitally controlled audio processor instead of standard bipolar multipliers, very low distortion and very low noise are obtained Several new features like softmute, zero-crossing mute 2 C bus and pause detector are implemented ...

  • Page 2

    Contents Contents 1 Block diagram and PIN connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical characteristics ...

  • Page 3

    TDA7348 List of tables Table 1. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 4

    List of figures List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 5

    TDA7348 1 Block diagram and PIN connections Figure 1. Block diagram 3 x 1μ LEFT INPUTS INPUT SELECTOR + GAIN 1μF R3 ...

  • Page 6

    Electrical characteristics 2 Electrical characteristics Table 1. Electrical characteristics 0dB 1KHz. Refer to the test circuit, unless otherwise specified. Symbol Input selector R Input resistance I V Clipping level CL S Input separation ...

  • Page 7

    TDA7348 Table 1. Electrical characteristics (continued 9V 0dB 1KHz. Refer to the test circuit, unless otherwise specified. Symbol Soft mute A Mute attenuation MUTE T ON delay time DON T OFF delay time DOFF ...

  • Page 8

    Electrical characteristics Table 1. Electrical characteristics (continued 9V 0dB 1KHz. Refer to the test circuit, unless otherwise specified. Symbol I Supply current CC PSRR Power supply rejection ratio Output noise Total ...

  • Page 9

    TDA7348 Table 4. Quick reference data (continued) Symbol Channel separation f = 1KHz S C Volume control Treble control 2dB step Bass control 2dB step Fader and balance control 1.25dB step Input gain 3.75dB step Mute attenuation Parameter Electrical characteristics ...

  • Page 10

    I C BUS interface BUS interface Data transmission from microprocessor to the TDA7348 and vice-versa takes place through the 2 wires of the I resistors to the positive supply voltage must be externally connected). 3.1 ...

  • Page 11

    TDA7348 Figure 3. Data validity on the I Figure 4. Timing diagram of I Figure 5. Acknowledge on the I SCL SDA 2 C BUS SDA SCL DATA LINE CHANGE STABLE, DATA DATA VALID ALLOWED 2 C BUS SCL SDA ...

  • Page 12

    Software specification 4 Software specification 4.1 Interface protocol The interface protocol comprises: ● A start condition (s) ● A chip address byte, (the LSB bit determines read/write transmission) ● A subaddress byte. ● A sequence of data (N-bytes + acknowledge) ...

  • Page 13

    TDA7348 4.3 Transmitted data Table 6. Send mode MSB Zero crossing muted (HIGH active Soft mute activated (HIGH active Not used The transmitted data is automatically updated after each ACK. Transmission can ...

  • Page 14

    Software specification Table 8. Loudness (continued) MSB For example to select -17.5dB ...

  • Page 15

    TDA7348 An additional direct mute function is included in the speaker attenuators. Note: Bass cut for very low frequencies should not be used at +16 & +18dB bass boost (DC gain) Table 10. Speaker attenuators MSB ...

  • Page 16

    Software specification Table 11. Bass/Treble (continued) MSB ...

  • Page 17

    TDA7348 Table 12. Volume MSB For example to select -47.81dB volume the data ...

  • Page 18

    Package information 5 Package information In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the ...

  • Page 19

    TDA7348 6 Revision history Table 13. Document revision history Date 14-Jan-2004 21-Jun-2004 26-Jan-2007 Revision 1 Initial release. 2 Technical migration from ST-PRESS to EDOCS DMS 3 DIP28 package removed, block diagram changed, layout modified. Revision history Changes 19/20 ...

  • Page 20

    ... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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