TDA7348 STMicroelectronics, TDA7348 Datasheet
TDA7348
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TDA7348 Summary of contents
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... 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 ...
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... Data validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.2 Start and stop conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.3 Byte format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.4 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.5 Transmission without acknowledgement . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 Software specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.1 Interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.2 Auto increment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.3 Transmitted data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.4 Data byte specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2/20 TDA7348 ...
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... TDA7348 List of tables Table 1. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 3. Thermal data Table 4. Quick reference data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 5. Subaddress (receive mode Table 6. Send mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 7. Input Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 8. Loudness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 9. Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table 10. Speaker attenuators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Table 11. Bass/Treble Table 12. Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Table 13. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 ...
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... List of figures List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. PIN connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 3. Data validity on the I Figure 4. Timing diagram of I Figure 5. Acknowledge on the I Figure 6. SO-28 mechanical, data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4/ BUS BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 TDA7348 ...
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... TDA7348 1 Block diagram and PIN connections Figure 1. Block diagram 3 x 1μ LEFT INPUTS INPUT SELECTOR + GAIN 1μ RIGHT INPUTS SUPPLY AGND CREF C8 10μF Figure 2. PIN connections TREBLE C10 2.2μF C14 100nF OUT(L) IN(L) SM BOUT( ZERO VOL CROSS + 1, 2 MUTE ...
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... Min. Typ. Max. 70 100 130 2.1 2.6 80 100 2 -0.75 0 0.75 10.25 11.25 12.25 2.75 3.75 4.75 2.3 1 18.75 20 21.25 78.45 0.5 1.25 0.11 0.31 0.51 -1. 0.5 MAX 160 80 100 0 TDA7348 Unit KΩ V RMS dB KΩ μ KΩ 2 ...
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... 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 V Soft mute threshold THSM R Pull-up resistor (pin 22) INT V (pin 22) level high SMH V (pin 22) level low ...
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... Min. Typ. Max 2 1Vrms 106 O 80 100 0.01 0. 0.4 Value 10.5 - -55 to 150 SO28 65 Min. Typ. Max 10.2 2.1 2.6 0.01 0.08 106 TDA7348 Unit μV μ μA 5 0.8 V Unit V °C °C Unit °C/W Unit V Vrms % dB ...
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... 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 Min. Typ. Max. Unit 100 ...
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... 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 Data validity As shown in Figure clock. The HIGH and LOW state of the data line can only change when the clock signal on the SCL line is LOW ...
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... 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 D99AU1032 START 2 C BUS MSB START D99AU1033 BUS interface D99AU1031 2 I CBUS ...
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... If bit I in the subaddress byte is set to "1", the auto-increment of the subaddress is enabled Table 5. Subaddress (receive mode) MSB X X 12/20 Subaddress MSB LSB ACK Data 1 to data n MSB LSB DATA LSB Function Input selector 0 1 Loudness 1 0 Volume 1 1 Bass, Treble 0 0 Speaker attenuator Speaker attenuator Speaker attenuator Speaker attenuator Mute TDA7348 ACK P ...
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... 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 be repeated without new chip address. 4.4 Data byte specification X = not relevant; set to "1" during testing Table 7 ...
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... LSB TDA7348 LSB Function -3.75dB 0 0 -5dB 0 1 -6.25dB 1 0 -7.5dB 1 1 -8.75dB 0 0 -10dB 0 1 -11.25dB 1 0 -12.5dB 1 1 -13.75dB 0 0 -15dB 0 1 -16.25dB 1 0 -17.5dB 1 1 -18.75dB Function Soft mute on Soft mute with fast slope (I = IMAX) Soft mute with slow slope (I = IMIN) ...
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... 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 For example an attenuation of 25dB on a selected output is given by Table 11. Bass/Treble MSB D7 D6 ...
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... For example 12dB Treble and -8dB Bass give the following DATA BYTE 16/20 LSB TDA7348 Function 4dB 6dB 8dB 10dB 12dB 14dB BASS STEPS -10dB -8dB -6dB -4dB -2dB -0dB -0dB 2dB 4dB 6dB 8dB 10dB 12dB 14dB 146B 18dB ...
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... TDA7348 Table 12. Volume MSB For example to select -47.81dB volume the data byte is Power on RESET: All bytes set LSB Software specification Function 0.31dB Fine attenuation steps 0dB -0.31dB -0.62dB -0.94dB 1.25dB Coarse attenuation steps 0dB -1.25dB -2.5dB -3.75dB -5dB -6.25dB -7.5dB -8.75dB ...
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... TYP. MAX. 2.65 0.104 0.3 0.004 0.012 0.49 0.014 0.019 0.32 0.009 0.013 0.5 0.020 45° (typ.) 18.1 0.697 0.713 10.65 0.394 0.419 1.27 0.050 16.51 0.65 7.6 0.291 0.299 1.27 0.016 0.050 8 ° (max.) TDA7348 OUTLINE AND MECHANICAL DATA SO-28 ...
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... 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 ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 20/20 Please Read Carefully: © 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com TDA7348 ...