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TDA7315-TDA7315D
DIGITAL CONTROLLED AUDIO PROCESSOR WITH LOUDNESS
TDA7315DIGITAL CONTROLLED AUDIO PROCESSOR
1 STEREO INPUT
LOUDNESS FUNCTION
VOLUME CONTROL IN 1.25dB STEPS
TREBLE AND BASS CONTROL
TWO SPEAKERS ATTENUATORS:
- INDEPENDENT SPEAKERS CONTROL
IN 1.25dB STEPS
- INDEPENDENT MUTE FUNCTION
ALL FUNCTIONS PROGRAMMABLE VIA SE-
RIAL BUS
DESCRIPTIONThe TDA7315 is a volume, tone (bass and treble)
balance (Left/Right) processor for quality audio appli-
cations in car radio and Hi-Fi systems.
Control is accomplished by serial bus microprocessor
interface.
The AC signal setting is obtained by resistor networks
and switches combined with operational amplifi-
ers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are ob-
tained.
BLOCK DIAGRAM
THERMAL DATA
QUICK REFERENCE DATA
ABSOLUTE MAXIMUM RATINGS
PIN CONNECTION (Top view)
TDA73152/12
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)
SUPPLY
VOLUME CONTROL
SPEAKER ATTENUATORS
BASS CONTROL (1)
TEST CIRCUIT
TDA73153/12
ELECTRICAL CHARACTERISTICS (continued)TREBLE CONTROL (1)
AUDIO OUTPUTS
GENERAL
BUS INPUTS
Note:
(1) Bass and Treble response see attached diagram (fig.19). 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.
Figure 1: Loudness versus Volume Attenuation Figure 2: Loudness versus Frequency
TDA73154/12
Figure 6: Distortion & Noise vs. Frequency
Figure 7: Distortion & Noise vs. Frequency Figure 8: Distortion vs. Load Resistance
Figure 4: Noise vs. Volume/Gain Settings
Figure 5: Signal to Noise Ratio vs. VolumeSetting
Figure 3: Loudness versus External CapacitorsLOUDNESS
VS = 9V
Volume = -40dB
All other control flat
Cin = 2.2μF
Cloud = 220nF, 100nF, 33nF, 10nF, Open, Shorter to Vref
TDA73155/12
