TDA7400 데이터 시트보기 (PDF) - STMicroelectronics
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TDA7400 Datasheet PDF : 28 Pages
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TDA7400
AUDIO PROCESSOR PART
Input Multiplexer
Quasi-differential CD and cassette stereo input
AM mono input
Phone differential input
Multiplexer signal after In-Gain available at
separate pins
±15 x 1dB steps
Treble Control
2nd order frequency response
Center frequency programmable in 4 steps
±15 x 1dB steps
Volume control
1dB attenuator
Max. gain 15dB
Max. attenuation 79dB
Speaker Control
4 independent speaker controls in 1dB steps
max gain 15dB
max. attenuation 79dB
Bass Control
2nd order frequency response
Center frequency programmable in 4(5) steps
DC gain programmable
Mute Functions
Direct mute
Digitally controlled softmute with 4 programmable
mute time
ELECTRICAL CHARACTERISTICS (VS = 9V; Tamb = 25°C; RL = 10KΩ; all gains = 0dB; f = 1KHz;
unless otherwise specified).
Symbol
Parameter
Test Condition
INPUT SELECTOR
Rin
Input Resistance
VCL
Clipping Level
SIN
Input Separation
GIN MIN Min. Input Gain
GIN MAX Max. Input Gain
GSTEP
Step Resolution
VDC
DC Steps
all inputs except Phone
Adjacent Gain Step
GMIN to GMAX
DIFFERENTIAL CD STEREO INPUT
Rin
Input Resistance
CMRR Common Mode Rejection Ratio
eN
Output Noise @ Speaker
Outputs
Differential
Common Mode
VCM = 1VRMS @ 1KHz
VCM = 1VRMS @ 10KHz
20Hz to 20KHz flat; all stages
0dB
DIFFERENTIAL PHONE INPUT
Rin
Input Resistance
CMRR Common Mode Rejection Ratio
Differential
VCM = 1VRMS @ 1KHz
VCM = 1VRMS @ 10KHz
Min. Typ. Max. Unit
70
100 130
KΩ
2.2
2.6
VRMS
80
100
dB
-1
0
1
dB
13
15
17
dB
0.5
1
1.5
dB
-5
0.5
5
mV
-10
5
10
mV
70
100 130
KΩ
70
100 130
KΩ
45
70
dB
45
60
dB
6
15
µV
40
56
KΩ
40
70
dB
40
60
dB
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