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PDF TDA7718B Data sheet ( Hoja de datos )

Número de pieza TDA7718B
Descripción 3 band car audio processor
Fabricantes STMicroelectronics　
Logotipo STMicroelectronics Logotipo



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No Preview Available ! TDA7718B Hoja de datos, Descripción, Manual

TDA7718B
3 band car audio processor
*$3*36
TSSOP28
Features
Input multiplexer
– QD1: quasi-differential stereo inputs
– SE1: stereo single-ended input
– SE2: stereo single-ended input
– SE3: stereo single-ended input
– FD full-differential or quasi-differential input
Loudness
– 2nd order frequency response
– Programmable center frequency
(400 Hz / 800 Hz / 2400 Hz)
– 15 dB with 1 dB 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
Bass
– 2nd 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
Middle
– 2nd 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
Datasheet - production data
Treble
– 2nd 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
Speaker
– 4 independent soft-step speaker controls
– +15 dB to -79 dB with 1 dB steps
– Direct mute
Subwoofer
– 2nd order low pass filter with programmable
cut off frequency (55 Hz / 85 Hz / 120 Hz /
160 Hz)
– 2 independent soft-step level control,
+15 dB to –79 dB with 1 dB steps
Mute functions
– Direct mute
– Digitally controlled soft-mute with 4
programmable mute-times
(0.48 ms/0.96 ms/8 ms/16 ms)
Offset detection
– Offset voltage detection circuit for on-board
power amplifier failure diagnosis
Description
The TDA7718B is a high performance signal
processor specifically designed for car radio
applications. The device includes a high
performance audioprocessor with fully integrated
audio filters and new soft-step architecture. The
digital control allows programming in a wide range
of filter characteristics.
Table 1. Device summary
Order code
Package
Packing
TDA7718B
TSSOP28
Tube
TDA7718BTR
TSSOP28
Tape and reel
September 2013
This is information on a product in full production.
DocID18305 Rev 3
1/40
www.st.com
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TDA7718B pdf
TDA7718B
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Block circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
FD/QD block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Loudness attenuation @ fP = 400 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Loudness center frequencies @ attn. = 15 dB.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Loudness attenuation, fc = 2.4 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Soft-mute timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Bass control @ fC = 80 Hz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Bass center frequencies @ gain = 14 dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Bass quality factors @ gain = 14 dB, fC = 80 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Bass normal and DC mode @ gain = 14 dB, fC = 80 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Middle control @ fC = 1 kHz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Middle center frequencies @ gain = 14 dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Middle quality factors @ gain = 14 dB, fC = 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Treble control @ fC = 17.5 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Treble center frequencies @ gain = 14 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Subwoofer cut frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DC offset detection circuit (simplified) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
I2C bus interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
I2C bus data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
TSSOP28 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
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TDA7718B arduino
TDA7718B
Electrical specifications
Symbol
Table 5. Electrical characteristics (continued)
Parameter
Test condition
Min.
Middle control
CRANGE Control range
ASTEP Step resolution
fc Center frequency
QMIDDLE Quality factor
Treble control
CRANGE Clipping level
ASTEP Step resolution
fc Center frequency
Speaker attenuators
GMAX
AMAX
ASTEP
AMUTE
EE
VDC
Max gain
Max attenuation
Step resolution
Mute attenuation
Attenuation set error
DC steps
Audio outputs
VCL Clipping level
ROUT
RL
CL
VDC
Output impedance
Output load resistance
Output load capacitor
DC voltage level
Subwoofer lowpass
fLP Lowpass corner frequency
- ±14
- 0.5
fC1 -
fC2 -
fC3 -
fC4 -
Q1 -
Q2 -
Q3 -
- ±14
- 0.5
fC1 -
fC2 -
fC3 -
fC4 -
-
-
-
-
-
Adjacent attenuation steps
14
-
0.5
80
-
-
d = 0.3 %; byte8_D6=1
d = 1 %; byte8_D6=0
-
-
-
-
2
2.2
-
2
-
3.8
fLP1 -
fLP2 -
fLP3 -
fLP4 -
Typ.
±15
1
500
1
1.5
2.5
0.75
1
1.25
±15
1
10
12.5
15
17.5
15
-79
1
90
-
0.1
-
-
20
-
-
4.0
55
85
120
160
Max. Unit
±16 dB
1.5 dB
- Hz
- kHz
- kHz
- kHz
--
--
--
±16 dB
1.5 dB
- kHz
- kHz
- kHz
- kHz
16 dB
-74 dB
1.5 dB
- dB
2 dB
5 mV
- VRMS
- VRMS
100 W
- k
10 nF
4.2 V
- Hz
- Hz
- Hz
- Hz
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