Tda 7313
Tda 7313
Tda 7313
INPUT MULTIPLEXER:
- 3 STEREO INPUTS
- SELECTABLE INPUT GAIN FOR OPTIMAL
ADAPTION TO DIFFERENT SOURCES
INPUT AND OUTPUT FOR EXTERNAL
EQUALIZER OR NOISE REDUCTION SYS-
TEM
LOUDNESS FUNCTION
VOLUME CONTROL IN 1.25dB STEPS
TREBLE AND BASS CONTROL DIP28 SO28
FOUR SPEAKER ATTENUATORS: ORDERING NUMBERS:
- 4 INDEPENDENT SPEAKERS CONTROL TDA7313 TDA7313D
IN 1.25dB STEPS FOR BALANCE AND
FADER FACILITIES
- INDEPENDENT MUTE FUNCTION systems.
ALL FUNCTIONS PROGRAMMABLE VIA SE- Selectable input gain and external loudness function
RIAL I2C BUS are provided. Control is accomplished by serial I2C
bus microprocessor interface.
The AC signal setting is obtained by resistor networks
DESCRIPTION andswitches combined with operationalamplifiers.
The TDA7313 is a volume, tone (bass and treble) Thanks to the used BIPOLAR/CMOS Tecnology,
balance (Left/Right) and fader (front/rear) processor Low Distortion, Low Noise and Low DC stepping are
for quality audio applications in car radio and Hi-Fi obtained.
TEST CIRCUIT
THERMAL DATA
Symbol Description SO28 DIP28 Unit
R th j-pins Thermal Resistance Junction-pins max 85 65 °C/W
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C11 5.6K R2 C17
100nF 2.7nF
C9 2.2µF
100nF 100nF
C14 C15
OUT(L) IN(L) LOUD(L) BOUT(L) BIN(L) TREBLE(L)
BLOCK DIAGRAM
17 16 12 19 18 4
SPKR
ATT
RB 25 OUT LEFT
FRONT
3x
2.2µF MUTE
C1 L1 15 L1
SPKR
C2 L2 14 L2 VOL ATT
LEFT BASS TREBLE
INPUTS + LOUD 23 OUT LEFT
C3 L3 13 L3 REAR
MUTE
28
INPUT SCL
SELECTOR SERIAL BUS DECODER + LATCHES 27
+ GAIN SDA BUS
26
DIGGND
C4 R3 9 R3
SPKR
RIGHT C5 R2 10 R2 VOL ATT
BASS TREBLE
INPUTS + LOUD 24 OUT RIGHT
C6 R1 11 R1 FRONT
MUTE
3x
2.2µF
SPKR
ATT
22 OUT RIGHT
RB
REAR
SUPPLY
MUTE
2 3 1 7 6 8 21 20 5
VCC AGND CREF OUT(R) IN(R) LOUD(R) BOUT(R) BIN(R) TREBLE(R) D94AU180
C7 22µF 100nF 100nF
C12 C13
C8 2.2µF
100nF 5.6K R1 2.7nF
C10 C16
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TDA7313
TDA7313
ELECTRICAL CHARACTERISTICS (refer to the test circuit Tamb = 25°C, VS = 9V, RL = 10KΩ,
RG = 600Ω, all controls flat (G = 0), f = 1KHz unless otherwise specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
SUPPLY
VS Supply Voltage 6 9 10 V
IS Supply Current 8 11 mA
SVR Ripple Rejection 60 80 dB
INPUT SELECTORS
R II Input Resistance Input 1, 2, 3 35 50 70 KΩ
V CL Clipping Level 2 2.5 Vrms
SIN Input Separation (2) 80 100 dB
RL Output Load resistance pin 7, 17 2 KΩ
GINmin Min. Input Gain -1 0 1 dB
GINmax Max. Input Gain 11.25 dB
GSTEP Step Resolution 3.75 dB
eIN Input Noise G = 11.25dB 2 µV
VDC DC Steps adjacent gain steps 4 20 mV
G = 18.75 to Mute 4 mV
VOLUME CONTROL
R IV Input Resistance 20 33 50 kΩ
C RANGE Control Range 70 75 80 dB
AVMIN Min. Attenuation -1 0 1 dB
AVMAX Max. Attenuation 70 75 80 dB
ASTEP Step Resolution 0.5 1.25 1.75 dB
EA Attenuation Set Error Av = 0 to -20dB -1.25 0 1.25 dB
Av = -20 to -60dB -3 2 dB
ET Tracking Error 2 dB
VDC DC Steps adjacent attenuation steps 0 3 mV
From 0dB to Av max 0.5 7.5 mV
SPEAKER ATTENUATORS
Crange Control Range 35 37.5 40 dB
SSTEP Step Resolution 0.5 1.25 1.75 dB
EA Attenuation set error 1.5 dB
AMUTE Output Mute Attenuation 80 100 dB
VDC DC Steps adjacent att. steps 0 3 mV
from 0 to mute 1 10 mV
BASS CONTROL (1)
Gb Control Range Max. Boost/cut +12 +14 +16 dB
BSTEP Step Resolution 1 2 3 dB
RB Internal Feedback Resistance 34 44 58 KΩ
TREBLE CONTROL (1)
Gt Control Range Max. Boost/cut +13 +14 +15 dB
TSTEP Step Resolution 1 2 3 dB
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TDA7313
(1) Bass and Treble response see attached diagram (fig.16). The center frequency and quality of the resonance behaviour can be choosen by
the external circuitry. A standard first order bass response can be realized by a standard feedback network
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TDA7313
Figure 3: Loudness vs. External Capacitors Figure 4: Noise vs. Volume/Gain Settings
Figure 5: Signal to Noise Ratio vs. Volume Figure 6: Distortion & Noise vs. Frequency
Setting
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TDA7313
Figure 9: Channel Separation (L → R) vs. Figure 10: Input Separation (L1 → L2, L3, L4) vs.
Frequency Frequency
Figure 11: Supply Voltage Rejection vs. Figure 12: Output Clipping Level vs. Supply
Frequency Voltage
Figure 13: Quiescent Current vs. Supply Voltage Figure 14: Supply Current vs. Temperature
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TDA7313
Figure 15: Bass Resistance vs. Temperature Figure 16: Typical Tone Response (with the ext.
components indicated in the test
circuit)
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TDA7313
SOFTWARE SPECIFICATION address (the 8th bit of the byte must be 0). The
TDA7313 must always acknowledge at the end
Interface Protocol of each transmitted byte.
The interface protocol comprises: A sequence of data (N-bytes + acknowledge)
A start condition (s)
A stop condition (P)
A chip address byte, containing the TDA7313
TDA7313 ADDRESS
SOFTWARE SPECIFICATION
Chip address
1 0 0 0 1 0 0 0
MSB LSB
DATA BYTES
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TDA7313
Speaker Attenuators
MSB LSB FUNCTION
1 0 0 B1 B0 A2 A1 A0 Speaker LF
1 0 1 B1 B0 A2 A1 A0 Speaker RF
1 1 0 B1 B0 A2 A1 A0 Speaker LR
1 1 1 B1 B0 A2 A1 A0 Speaker RR
0 0 0 0
0 0 1 -1.25
0 1 0 -2.5
0 1 1 -3.75
1 0 0 -5
1 0 1 -6.25
1 1 0 -7.5
1 1 1 -8.75
0 0 0
0 1 -10
1 0 -20
1 1 -30
1 1 1 1 1 Mute
For example attenuation of 25dB on speaker RF is given by:
1 0 1 1 0 1 0 0
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TDA7313
Audio Switch
MSB LSB FUNCTION
0 1 0 G1 G0 S2 S1 S0 Audio Switch
0 0 Stereo 1
0 1 Stereo 2
1 0 Stereo 3
1 1 Stereo 4 (*)
0 LOUDNESS ON
1 LOUDNESS OFF
0 0 +11.25dB
0 1 +7.5dB
1 0 +3.75dB
1 1 0dB
For example to select the stereo 2 input with a gain of +7.5dB LOUDNESS ON the 8bit string is:
0 1 0 0 1 0 0 1
(*) Stereo 4 is connected internally, but not available on pins.
1 1 1 1 0
1 1 1 0 2
1 1 0 1 4
1 1 0 0 6
1 0 1 1 8
1 0 1 0 10
1 0 0 1 12
1 0 0 0 14
C3 = Sign
For example Bass at -10dB is obtained by the following 8 bit string:
0 1 1 0 0 0 1 0
Purchase of I2C Components of STMicroelectronics, conveys a license under the Philips I2C Patent
Rights to use these components in an I2C system, provided that the system conforms to the I 2C
Standard Specifications as defined by Philips.
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TDA7313
mm inch
DIM. OUTLINE AND
MIN. TYP. MAX. MIN. TYP. MAX. MECHANICAL DATA
A 2.65 0.104
C 0.5 0.020
c1 45° (typ.)
e 1.27 0.050
e3 16.51 0.65
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TDA7313
mm inch
DIM. OUTLINE AND
MIN. TYP. MAX. MIN. TYP. MAX.
MECHANICAL DATA
a1 0.63 0.025
b 0.45 0.018
b2 1.27 0.050
D 37.34 1.470
e 2.54 0.100
e3 33.02 1.300
F 14.1 0.555
I 4.445 0.175
DIP28
L 3.3 0.130
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TDA7313
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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