TDA7718N ,3 BAND CAR AUDIO PROCESSORFeatures■ Input multiplexer– QD1: quasi-differential stereo inputs– SE1: stereo single-ended input– ..
TDA7719 ,3 BAND CAR AUDIO PROCESSORpin configuration . . . . 13Table 7. Selector configuration matrix . . . . . . . 14Table ..
TDA7719TR ,3 BAND CAR AUDIO PROCESSORElectrical characteristics . . . . . . . 94 Description 134.1 Input configuration . ..
TDA7801 ,Digital input (I2S), quad BTL output power amplifier with full I2C diagnosticsapplications. Selectable input sampling frequency: Thanks to the BCD6 technology it is possible to ..
TDA7850 ,Quad BTL output with HSD/offset detection, stand-by and mute inputsBlock diagram . . . . 5Figure 2. Standard test and application circuit . . . 5Figure 3. ..
TDA7850A ,Quad BTP output with HSD, offset detection , stand-by and mute inputsFeatures■ High output power capability:–4 x 50 W/4 max.–4 x 30 W/4 @ 14.4 V, 1 kHz, 10 %–4 x 80 ..
THS4500IDRG4 ,High-Speed Fully Differential Amplifier, +/-5 V 8-SOIC -40 to 85FEATURES APPLICATIONS23• Fully Differential Architecture• High Linearity Analog-to-Digital Converte ..
THS4501CD ,High-Speed Fully Differential Amplifier, +/-5 VMAXIMUM RATINGSOver operating free-air temperature range, unless otherwise noted.UNITSupply voltage ..
THS4501CDGN ,High-Speed Fully Differential Amplifier, +/-5 V SLOS350F–APRIL 2002–REVISED OCTOBER 2011(1)PACKAGE/ORDERING INFORMATIONORDERABLE PACKAGE AND NUMBE ..
THS4501ID ,High-Speed Fully Differential Amplifier, +/-5 VFEATURES APPLICATIONS23• Fully Differential Architecture• High Linearity Analog-to-Digital Converte ..
THS4501IDGK ,High-Speed Fully Differential Amplifier, +/-5 V.(2) All packages are available taped and reeled. The R suffix standard quantity is 2500. The T suf ..
THS4502CD ,High-Speed Fully-Differential AmplifiersMAXIMUM RATINGS(1)over operating free-air temperature range unless otherwise notedUNITSupply voltag ..
TDA7718N
3 BAND CAR AUDIO PROCESSOR
September 2013 Doc ID 16502 Rev 2 1/40
TDA7718N3 band car audio processor
Features Input multiplexer QD1: quasi-differential stereo inputs SE1: stereo single-ended input SE2: stereo single-ended input SE3: stereo single-ended input FD1 / SE4+SE5: 1 full-differential input or 2
stereo single-ended inputs Loudnessnd order frequency response Programmable center frequency
(400 Hz / 800 Hz / 2400 Hz) 15dB with 1dB steps Selectable high frequency boost Selectable flat-mode (constant attenuation) Volume +23 dB to -31 dB with 1 dB step resolution Soft-step control with programmable blend
times Bassnd order frequency response Center frequency programmable in 4 steps
(60 Hz / 80 Hz / 100 Hz / 200 Hz) Q programmable 1.0/1.25/1.5/2.0 DC gain programmable -15 dB to 15 dB range with 1 dB resolution Middlend order frequency response Center frequency programmable in 4 steps
(500 Hz / 1 kHz / 1.5 kHz / 2.5 kHz) Q programmable 0.75/1.0/1.25 -15 dB to 15 dB range with 1 dB resolution Treblend order frequency response
(10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz) Center frequency programmable in 4 steps
(10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz) -15 dB to 15 dB with 1 dB resolution
Contents TDA7718N2/40 Doc ID 16502 Rev 2
Contents Block circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pin connection and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.1 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Description of the audioprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134.1 Input stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1.1 Quasi-differential stereo input (QD1) . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1.2 Single-ended stereo input (SE1, SE2, SE3) . . . . . . . . . . . . . . . . . . . . . 13
4.1.3 Full-differential stereo input or single-ended input (FD1/QD2/SE4+SE5) 13
4.2 Loudness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.1 Loudness attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.2 Peak frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.3 High frequency boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.4 Flat mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.3 SoftMute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.4 SoftStep volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.5 Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5.1 Bass attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5.2 Bass center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5.3 Quality factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.5.4 DC mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6 Middle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.6.1 Middle attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.6.2 Middle center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.6.3 Quality factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.7 T reble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
TDA7718N ContentsDoc ID 16502 Rev 2 3/40
4.7.1 Treble attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.7.2 Center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.8 Subwoofer filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.9 Softstep control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.10 DC offset detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.11 Audioprocessor testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2 C bus specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265.1 Interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.2 I2 C bus electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.2.1 Receive mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2.2 Transmission mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2.3 Reset condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.3 Data byte specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
List of tables TDA7718N
4/40 Doc ID 16502 Rev 2
List of tables
Table 1. Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 4. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 5. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 6. I2 C bus electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 7. Subaddress (receive mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 8. Main selector (0). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 9. Soft mute / others (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 10. SoftStep I (5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 11. SoftStep II / DC detector (6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 12. Loudness (7). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 13. Volume / output gain (8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 14. Treble filter (9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 15. Middle filter (10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 16. Bass filter (11). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 17. Subwoofer / middle / bass (12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 18. Speaker attenuation (FL/FR/RL/RR/SWL/SWR) (13-18) . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 19. Testing audio processor 1 (19) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 20. Testing audio processor 2 (20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 21. Testing audio processor 3 (21) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 22. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
TDA7718N List of figures
Doc ID 16502 Rev 2 5/40
List of figures
Figure 1. Block circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3. FD / QD / SE block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 4. Loudness attenuation @ fP = 400 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 5. Loudness center frequencies @ attn. = 15 dB.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 6. Loudness attenuation, fc = 2.4 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 7. SoftMute timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 8. Bass control @ fC = 80 Hz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 9. Bass center frequencies @ gain = 14 dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 10. Bass quality factors @ gain = 14 dB, fC = 80 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 11. Bass normal and DC mode @ gain = 14 dB, fC = 80 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 12. Middle control @ fC = 1 kHz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 13. Middle center frequencies @ gain = 14 dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 14. Middle quality factors @ gain = 14 dB, fC = 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 15. Treble control @ fC = 17.5 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 16. Treble center frequencies @ gain = 14 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 17. Subwoofer cut frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 18. DC offset detection circuit (simplified) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 19. Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 20.I2 C bus interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 21.I2 C bus data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 22. TSSOP28 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Block circuit diagram TDA7718N Block circuit diagram
Figure 1. Block circuit diagram
TDA7718N Pin connection and pin description
Doc ID 16502 Rev 2 7/40 Pin connection and pin description
2.1 Pin connection
Figure 2. Pin connection (top view)
2.2 Pin description
Table 2. Pin description
Pin connection and pin description TDA7718N
8/40 Doc ID 16502 Rev 2
Table 2. Pin description (continued)
TDA7718N Electrical specifications
Doc ID 16502 Rev 2 9/40
3 Electrical specifications
3.1 Thermal data
3.2 Absolute maximum ratings
3.3 Electrical characteristics
VS = 8.5 V; Tamb= 25 °C; RL= 10 k; all gains = 0 dB; f = 1 kHz; unless otherwise specified
Table 3. Thermal data
Table 4. Absolute maximum ratings
Table 5. Electrical characteristics
Electrical specifications TDA7718N
10/40 Doc ID 16502 Rev 2
Table 5. Electrical characteristics (continued)
TDA7718N Electrical specifications
Doc ID 16502 Rev 2 11/40
Table 5. Electrical characteristics (continued)
Electrical specifications TDA7718N
12/40 Doc ID 16502 Rev 2
Table 5. Electrical characteristics (continued)
TDA7718N Description of the audioprocessor
Doc ID 16502 Rev 2 13/40 Description of the audioprocessor
4.1 Input stages
One quasi-differential stereo input, one full-differential stereo input and maximum five
single-ended inputs are available.
4.1.1 Quasi-differential stereo input (QD1)
The QD input is implemented as a buffered quasi-differential stereo stage with 100 k input-
impedance at each input. There is -3 dB attenuation at QD input stage.
4.1.2 Single-ended stereo input (SE1, SE2, SE3)
The input-impedance at each input is 100 k and the attenuation is fixed to -3 dB for
incoming signals.
4.1.3 Full-differential stereo input or single-ended input (FD1/QD2/SE4+SE5)
This device provides a full-differential stereo input stage (FD1) or 2nd quasi-differential
stereo input stage. The full differential is a buffered full-differential stereo stage with 100 k
input-impedance at each input. When using as QD2 application, it needs to connect the two
QD2G pins together from external and the input impedance at QDG becomes 50 k. This
stage can be also configured as 2 single-ended stereo input stages (SE4 and SE5). The
configuration is done with the input selector control bits and the selection of FD1 and QD2 is
controlled by a separate bit. There is -3 dB attenuation at the input stage. Figure 3 shows
the block diagram of this input stage.
Description of the audioprocessor TDA7718N
14/40 Doc ID 16502 Rev 2
Figure 3. FD / QD / SE block diagram
TDA7718N Description of the audioprocessor
Doc ID 16502 Rev 2 15/40
4.2 Loudness
There are four parameters programmable in the loudness stage.
4.2.1 Loudness attenuation
Figure 4 shows the attenuation as a function of frequency at fP = 400 Hz.
Figure 4. Loudness attenuation @ fP = 400 Hz.
4.2.2 Peak frequency
Figure 5 shows the four possible peak-frequencies at 400, 800 and 2400 Hz.
Figure 5. Loudness center frequencies @ attn. = 15 dB.
Description of the audioprocessor TDA7718N
16/40 Doc ID 16502 Rev 2
4.2.3 High frequency boost
Figure 6 shows the different Loudness shapes in low and high frequency boost.
Figure 6. Loudness attenuation, fc = 2.4 kHz
4.2.4 Flat mode
In flat mode the loudness stage works as a 0 dB to -15 dB attenuator.
TDA7718N Description of the audioprocessor
Doc ID 16502 Rev 2 17/40
4.3 SoftMute
The digitally controlled SoftMute stage allows muting/demuting the signal with a I2 C bus
programmable slope. The mute process can either be activated by the SoftMute pin or by
the I2 C bus. This slope is realized in a special S-shaped curve to mute slow in the critical
regions (see Figure7).
For timing purposes the bit 0 of the I2 C bus output register is set to 1 from the start of muting
until the end of demuting.
Figure 7. SoftMute timing
Note: Please notice that a started mute-action is always terminated and could not be interrupted
by a change of the mute –signal.
4.4 SoftStep volume
When the volume-level is changed audible clicks could appear at the output. The root cause
of those clicks could either be a DC-offset before the volume-stage or the sudden change of
the envelope of the audio signal. With the SoftStep-feature both kinds of clicks could be
reduced to a minimum and are no more audible. The blend-time from one step to the next is
programmable as 5 ms or 10 ms. The SoftStep control is described in detail in Chapter 4.9.
Description of the audioprocessor TDA7718N
18/40 Doc ID 16502 Rev 2
4.5 Bass
There are four parameters programmable in the bass stage:
4.5.1 Bass attenuation
Figure 8 shows the attenuation as a function of frequency at a center frequency of 80 Hz.
Figure 8. Bass control @ fC = 80 Hz, Q = 1
4.5.2 Bass center frequency
Figure 9 shows the four possible center frequencies 60, 80, 100 and 200 Hz.
Figure 9. Bass center frequencies @ gain = 14 dB, Q = 1
TDA7718N Description of the audioprocessor
Doc ID 16502 Rev 2 19/40
4.5.3 Quality factors
Figure 10 shows the four possible quality factors 1, 1.25, 1.5 and 2.
Figure 10. Bass quality factors @ gain = 14 dB, fC = 80 Hz
4.5.4 DC mode
In this mode the DC-gain is increased by 4.4 dB. In addition the programmed center
frequency and quality factor is decreased by 25 % which can be used to reach alternative
center frequencies or quality factors.
Figure 11. Bass normal and DC mode @ gain = 14 dB, fC = 80 Hz The center frequency, Q and DC-mode can be set fully independently.
Description of the audioprocessor TDA7718N
20/40 Doc ID 16502 Rev 2
4.6 Middle
There are three parameters programmable in the middle stage:
4.6.1 Middle attenuation
Figure 12 shows the attenuation as a function of frequency at a center frequency of 1 kHz.
Figure 12. Middle control @ fC = 1 kHz, Q = 1
4.6.2 Middle center frequency
Figure 13 shows the four possible center frequencies 500 Hz, 1 kHz, 1.5 kHz and 2.5 kHz.
Figure 13. Middle center frequencies @ gain = 14 dB, Q = 1
