1/11
TDA7463AD
June 2004
1
FEATURES
2 STEREO INPUT
1 STEREO OUTPUT
TREBLE BOOST
BASS CONTROL
BASS AUTOMATIC LEVEL CONTROL
VOLUME CONTROL IN 1dB STEPS
MUTE
STAND-BY FUNCTION SOFTWARE
CONTROLLED
ALL FUNCTION ARE PROGRAMMABLE VIA
SERIAL BUS
2
DESCRIPTION
The TDA7463AD is a volume tone (bass and tre-
ble) processor for quality audio applications in Low
voltage supply portable systems.
Bass ALC (Automatic Level Control) function can
be adjusted by a dedicated pin.
The control of all the functions is accomplished by
serial bus.
The AC signal setting is obtained by resistor net-
works and switches combined with operational
amplifiers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained.
LOW VOLTAGE TONE CONTROL
DIGITALLY CONTROLLED AUDIO PROCESSOR
Figure 2. Block Diagram
IN1-R
ALC
IN1-L
C2 0.47
F
C3 0.47
F
C6
3.3nF
C7
100nF
C8
100nF
R2
5.6K
SUPPLY
VS
GND
CREF
TREBLE-L
D99AU1049
I2C BUS DECODER + LATCHES
SCL
SDA
OUT-L
OUT-R
C9
22
F
+
TREBLE-R
RB
RB
BASSI-R
BASSO-R
x1
x5
x1
x5
C4 0.47
F
C5 0.47
F
50K
R1
1M
TREBLE
-63dB
CONTROL
-63dB
CONTROL
INPUT
SELECT
TREBLE
BASS
BASS
BASS_ALC
CONTROL
HALF_WAVE
RECTIFIER
50K
50K
IN2-R
18
17
15
16
19
20
2
3
4
5
6
11
12
1
7
9
10
14
C1 0.47
F
IN2-L
50K
V
REF
0/-10dB
0/-10dB
BASSO-L
BASSI-L
C10
100nF
C11
100
F
R3
1K
R4
1K
V
S
DGND
C14 3.3nF
R5
5.6K
100nF
100nF
C13
C12
1
2
3
4
V
S
VS
VS
I2C
SCL
SDA
Figure 1. Package
Table 1. Order Codes
Part Number
Package
TDA7463AD
SSO20P
SSO20P
REV. 3
TDA7463AD
2/11
Table 2. Absolute Maximum Ratings
Figure 3. Pin Connection (Top view)
Table 3. Thermal Data
Table 4. Quick Reference Data
Symbol
Parameter
Value
Unit
V
S
Operating Supply Voltage
5
V
T
amb
Operating Ambient Temperature
-10 to 85
C
T
stg
Storage Temperature Range
-55 to 150
C
Symbol
Parameter
Value
Unit
R
th j-pin
Thermal Resistance Junction-pins
85
C/W
Symbol
Parameter
Min
Typ
Max
Unit
V
S
Supply Voltage
1.8
2.4
3
V
V
CL
Max. input signal handling
0.2
Vrms
THD
Total Harmonic Distortion V = 0.1Vrms; f = 1KHz
0.1
%
S/N
Signal to Noise Ratio V out = 0.1Vrms (mode = OFF)
80
dB
S
C
Channel Separationf = 1KHz
80
dB
Volume Control (1dB step)
-63
0
dB
-10dB damping
-10
0
dB
14dB
0
14
dB
Treble Control
0
8
dB
Bass Control
0
14
dB
Mute Attenuation
100
dB
V
S
IN1-L
IN2-L
TREBLE-L
BASSI-L
OUT-L
BASSO-L
N.C.
SDA
CREF
N.C.
OUT-R
BASSI-R
BASSO-R
TREBLE-R
IN2-R
IN1-R
ALC
1
3
2
4
5
6
7
8
9
18
17
16
15
14
12
13
11
19
10
20
SCL
GND
D99AU1050
3/11
TDA7463AD
Table 5. ELECTRICAL CHARACTERISTCS
(refer to the test circuit T
amb
= 25C, V
S
=2.4V, R
L
= 10K
, R
G
= 600
, all controls flat, unless otherwise
specified)
Note: 1. BASS and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
SUPPLY
V
S
Supply Voltage
1.8
2.4
3
V
I
S
Supply Current
4
mA
I
ST-BY
Stand-By Current
50
A
SVR
Ripple Rejection
70
dB
INPUT STAGE
R
IN
Input Resistance
35
50
65
K
&
V
CL
Clipping Level
THD = 0.3%
0.2
Vrms
VOLUME CONTROL
C
RANGE
Control Range
63
dB
A
V MIN
Min Attenuation
-1
0
1
dB
A
V MAX
Max. Attenuation
62
63
64
dB
A
STEP
Step Resolution
1
dB
A
mute
Mute Attenuation
80
100
dB
A-10dB
-10dB damping
10
dB
G14dB
14dB gain
14
dB
BASS CONTROL (1)
Gb
Control Range
Max. Boost/on
14
dB
R
B
Internal Feedback Resistance
33.75
45
56.25
K
TREBLE CONTROL (1)
G
t
Control Range
Max. Boost on
8
dB
AUDIO OUTPUTS
V
CLIP
Clipping Level
d = 0.3%
0.2
V
RMS
R
L
Output Load Resistance
10
K
&
V
DC
DC Voltage Level
0.8
V
GENERAL
E
NO
Output Noise
Outout Muted
All gains = 0dB;
BW = 20Hz to 20KHz flat
5
8
V
V
E
t
Total Tracking Error
0
1
dB
S/N
Signal to Noise Ratio
All gains 0dB; V
O
= 0.1V
RMS
;
80
dB
S
C
Channel Separation Left/Right
80
dB
d
Distortion
A
V
= 0; V
I
= 0.1V
RMS
;
0.1
%
BUS INPUT
V
IL
Input Low Voltage
0.5
V
V
IH
Input High Voltage
1.9
V
I
IN
Input Current
V
IN
= 0.4V
-5
5
A
V
O
Output Voltage SDA Acknowledge
I
O
= 1.6mA
0.4
V
TDA7463AD
4/11
3
DATA BYTES
Address = (HEX) 10001000
3.1 FUNCTION SELECTION:
The first byte (subaddress)
B = 1 incremental bus; active
B = 0 no incremental bus;
X = indifferent 0,1
3.1.1 STAND_BY & TREBLE & OTHERS
MSB
LSB
SUBADDRESS
D7
D6
D5
D4
D3
D2
D1
D0
X
X
B
0
0
0
0
STAND-BY & TREBLE & OTHERS
X
X
B
0
0
0
1
BASS
X
X
B
0
0
1
0
VOLUME
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
STAND-BY
1
ALL CIRCUITS STOP
TREBLE
1
STAND-BY (Treble block stops)
1
0
BOOST OFF
0
0
BOOST ON
1
0
0
High Boost (+8dB)
0
0
0
Low Boost (+4dB)
MUTE
1
Input Mute ON
0
Input Mute OFF
1
Output Mute ON
0
Output Mute OFF
BASS
1
Release Current Circuit ON
0
Release Current Circuit OFF
INPUT Select
1
INPUT 1
0
INPUT 2
5/11
TDA7463AD
3.1.2 BASS
3.1.3 VOLUME
VOLUME: 0 ~ -63dB
MSB
LSB
BASS
D7
D6
D5
D4
D3
D2
D1
D0
1
STAND-BY (Bass block stops)
1
BASS (boost OFF)
0
BASS (boost ON)
1
0
High boost (Ex. + 14dB)
0
0
Low boost (Ex. + 6dB)
1
ALC mode OFF (ALC block stops)
0
ALC mode ON
0
0
Attack time resistor (12.5K
&
)
Release current (0.4 A)
0
1
Attack time resistor (25K
&
)
Release current (0.2 A)
1
0
Attack time resistor (50K
&
)
Release current (0.1 A)
1
1
Attack time resistor (100K
&
)
Release current (0.05 A)
0
0
Threshold1 (0.2Vrms)
0
1
Threshold2 (0.14Vrms)
1
0
Threshold3 (0.1Vrms)
1
1
Threshold4 (0.07Vrms)
MSB
LSB
VOLUME
D7
D6
D5
D4
D3
D2
D1
D0
1 dB STEPS
0
0
0
0
0
0
1
-1
0
1
0
-2
0
1
1
-3
1
0
0
-4
1
0
1
-5
1
1
0
-6
1
1
1
-7
8 dB STEPS
0
0
0
0
0
0
1
-8
0
1
0
-16
0
1
1
-24
1
0
0
-32
1
0
1
-40
1
1
0
-48
1
1
1
-56
OUTPUT GAIN
1
0dB
0
+14dB
OUTPUT ATTENUATION
1
0dB
0
-10dB
PDF 
ZIP