STMicroelectronics TDA7313, TDA7313D Schematic [ru]
DIGITAL CONTROLLED STEREO AUDIO PROCESSOR
INPUTMULTIPLEXER:
- 3 STEREO INPUTS
- SELECTABLEINPUT GAIN FOR OPTIMAL
ADAPTIONTO DIFFERENTSOURCES
INPUT AND OUTPUT FOR EXTERNAL
EQUALIZER OR NOISE REDUCTION SYSTEM
LOUDNESSFUNCTION
VOLUMECONTROL IN 1.25dBSTEPS
TREBLEAND BASS CONTROL
FOURSPEAKERATTENUATORS:
- 4 INDEPENDENTSPEAKERSCONTROL
IN 1.25dB STEPS FOR BALANCEAND
FADERFACILITIES
- INDEPENDENTMUTE FUNCTION
ALL FUNCTIONS PROGRAMMABLE VIA SE-
2
RIAL I
DESCRIPTION
The TDA7313 is a volum e, tone (bass and treble)
balance (Left/Ri ght) and fader (front/rear) processor
for quality audio applications in car radio and Hi-Fi
C BUS
TDA7313
WITH LOUDNESS
DIP28 SO28
ORDERING NUMBERS:
TDA7313 TDA7313D
systems.
Selectable input gainand externalloudness function
are provided. Contr ol is acc omplis hed by serial I
busmi c r opr oc es sorinterface.
TheACsignalsettingisobtainedbyresistornetwo rks
andswitchescombinedwithoperationalamplifiers.
Thanks to the used BIP OLAR / C MOS Tec nol ogy ,
LowDistortion, LowNoiseandLow DC steppingare
obtained.
2
C
PIN CONNECTION (Topview)
November 1999
1/14
TDA7313
TEST CIRCUIT
THERMAL DATA
Symbol Description SO28 DIP28 Unit
R
thj-pins
Thermal Resistance Junction-pins max 85 65 °C/W
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
T
amb
T
stg
Operating Supply Voltage 10.2 V
S
Operating Ambient Temperature -40 to 85
Storage Temperature Range -55 to +150 °C
QUICK REFERENCE DATA
Symbol Parameter Min. Typ. Max. Unit
V
V
CL
THD Total Harmonic DistortionV = 1Vrms f = 1KHz 0.01 0.1 %
S/N Signal to Noise Ratio 106 dB
S
Supply Voltage 6 9 10 V
S
Max. input signal handling 2 Vrms
Channel Separation f = 1KHz 103 dB
C
Volume Control 1.25dB step -78.75 0 dB
Bass and TrebleControl 2db step -14 +14 dB
Fader and Balance Control 1.25dBstep -38.75 0 dB
Input Gain 3.75dB step 0 11.25 dB
Mute Attenuation 100 dB
C
°
2/14
BLOCK DIAGRAM
TDA7313
BUS
C17
5.6K R2
C11
2.7nF
100nF
100nF
100nF
TREBLE(L)
C15
BIN(L)
BOUT(L)
C14
LOUD(L)
SPKR
4
18
19
12
ATT
FRONT
OUT LEFT
25
RB
MUTE
ATT
SPKR
TREBLE
BASS
VOL
REAR
OUT LEFT
23
+ LOUD
MUTE
SCL
SDA
282726
SERIAL BUS DECODER + LATCHES
DIGGND
SPKR
RIGHT
OUT
24
ATT
BASS TREBLE
VOL
+ LOUD
FRONT
MUTE
ATT
SPKR
RIGHT
REAR
OUT
22
RB
MUTE
D94AU180
TREBLE(R)
5
BOUT(R) BIN(R)
21 20
LOUD(R)
8
C13
100nF
C12
100nF
C16
2.7nF
5.6K R1
C10
100nF
C9 2.2µF
17 16
OUT(L) IN(L)
INPUT
+ GAIN
SELECTOR
3x
2.2µF
L1 15L1L2 14L2L3 13
C1
C2
LEFT
INPUTS
C3
L3
R3 9R3R2 10R2R1 11
C4
C5
RIGHT
INPUTS
C6
R1
3x
2.2µF
76
OUT(R) IN(R)
SUPPLY
AGND CREF
231
V
C8 2.2µF
22µFC7
CC
3/14
TDA7313
ELECTRICALCHARACTERISTICS (refer tothe test circuit T
R
= 600Ω, all controlsflat (G = 0), f = 1KHz unless otherwise specified)
G
=25°C,VS= 9V,RL=10KΩ,
amb
Symbol Parameter Test Condition Min. Typ. Max. Unit
SUPPLY
V
S
I
S
SVR Ripple Rejection 60 80 dB
Supply Voltage 6 9 10 V
Supply Current 8 11 mA
INPUT SELECTORS
G
G
G
V
R
II
V
CL
S
IN
R
L
INmin
INmax
STEP
e
IN
DC
Input Resistance Input 1, 2, 3 35 50 70 K
Clipping Level 2 2.5 Vrms
Input Separation (2) 80 100 dB
Output Load resistance pin 7, 17 2 K
Min. Input Gain -1 0 1 dB
Max. Input Gain 11.25 dB
Step Resolution 3.75 dB
Input Noise G = 11.25dB 2
DC Steps adjacent gain steps 4 20 mV
G = 18.75 to Mute 4 mV
VOLUMECONTROL
R
IV
C
RANGE
A
VMIN
A
VMAX
A
STEP
E
A
E
T
V
DC
Input Resistance 20 33 50 kΩ
Control Range 70 75 80 dB
Min. Attenuation -1 0 1 dB
Max. Attenuation 70 75 80 dB
Step Resolution 0.5 1.25 1.75 dB
Attenuation Set Error Av = 0 to -20dB
Av = -20 to -60dB
-1.25
-3
0 1.25
2
Tracking Error 2dB
DC Steps adjacent attenuation steps
From 0dB to Av max
0
0.5
3
7.5
SPEAKERATTENUATORS
µ
dB
dB
mV
mV
Ω
Ω
V
C
S
A
range
STEP
E
MUTE
V
DC
A
Control Range 35 37.5 40 dB
Step Resolution 0.5 1.25 1.75 dB
Attenuation set error 1.5 dB
Output Mute Attenuation 80 100 dB
DC Steps adjacent att. steps
from 0 to mute
0
1
BASS CONTROL(1)
Gb Control Range Max. Boost/cut +12 +14 +16 dB
B
STEP
R
B
Step Resolution 1 2 3 dB
Internal Feedback Resistance 34 44 58 KΩ
TREBLECONTROL(1)
Gt Control Range Max. Boost/cut +13 +14 +15 dB
Step Resolution 1 2 3 dB
4/14
T
STEP
10
3
mV
mV
TDA7313
ELECTRICALCHARACTERISTICS (continued)
Symbol Parameter Test Condition Min. Typ. Max. Unit
AUDIO OUTPUTS
V
OCL
R
L
C
L
R
OUT
V
OUT
Clipping Level d = 0.3% 2 2.5 Vrms
Output Load Resistance 2 KΩ
Output Load Capacitance 10 nF
Output resistance 30 75 120
Ω
DC Voltage Level 4.2 4.5 4.8 V
GENERAL
e
NO
S/N Signal to Noise Ratio all gains = 0dB; V
d Distortion A
Sc Channel Separation left/right 80 103 dB
Output Noise BW = 20-20KHz, flat
output muted
all gains = 0dB
A curve all gains = 0dB 3 µV
O
=0,VIN= 1Vrms
V
A
= -20dB VIN= 1Vrms
Total Tracking error A
V
= 0 to -20dB
V
V
= 0.3Vrms
IN
-20 to -60 dB
2.5
515
µV
µ
= 1Vrms 106 dB
0.01
0.09
0.04
0
0
0.1
0.3
1
2
%
%
%
dB
dB
V
BUS INPUTS
V
IL
V
IH
I
IN
V
O
Notes:
(1) Bass and Trebleresponse seeattached diagram(fig.16). The center frequencyand quality ofthe resonance behaviour can be choosen by
the external circuitry. A standard first order bass response can be realized by a standard feedback network
(2) The selected input is groundedthru the 2.2µF capacitor.
Input Low Voltage 1V
Input High Voltage 3 V
Input Current -5 +5
Output Voltage SDA
IO= 1.6mA 0.4 V
A
µ
Acknowledge
Figure 1: Loudnessvs. VolumeAttenuation
Figure2: Loudnessvs. Frequency(C
100nF) vs. Volume Attenuation
LOUD
=
5/14
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