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| TDA7437N Datasheet, PDF (5/23 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR | |||
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TDA7437N
ELECTRICAL CHARACTERISTICS (continued)
(AVDD, DVDD = 9V; RL = 10Kâ¦; Rg = 50â¦; Tamb = 25°C; all gains = 0dB; f = 1KHz. Refer to the test circuit,
unless otherwise specified.)
Symbol
Parameter
VDC DC Step
SOFT MUTE
AMUTE Mute Attenuation
TDON ON Delay Time
TDOFF OFF Current
RINT Pullup Resistor (pin 28)
VSMH (pin 28) Level High
VSML (pin 28) Level Low
BASS CONTROL
Crange Control Range
Astep Step Resolution
Rg Internal Feedback Resistance
MIDDLE CONTROL
Crange Control Range
Astep Step Resolution
Rg Internal Feedback Resistance
TREBLE CONTROL
CRANGE Control Range
Astep Step Resolution
SPEAKER ATTENUATORS
CRANGE Control Range
Astep Step Resolution
AMUTE Output Mute Attenuation
EA Attenuation Set Error
VDC DC Steps
AUDIO OUTPUT
Vclip Clipping Level
RL Output Load Resistance
RO Output Impedance
VDC DC Voltage Level
PAUSE DETECTOR
VTH Pause Threshold
IDELAY Pull-Up Current
VTHP Pause Threshold
Test Condition
0dB to Mute
Min. Typ. Max. Unit
0.1
3
mV
50
65
dB
CCSM = 22nF; 0 to -20dB; I = IMAX 0.8
1.5
2.0
ms
CCSM = 22nF; 0 to -20dB; I = IMIN 25
45
60
ms
VCSM = 0V; I = IMAX
VCSM = 0V; I = IMIN
(note 2)
20
40
60
mA
2
µA
100
Kâ¦
3.5
V
Soft Mute Active
1
V
±11.5 ±14 ±16
dB
1
2
3
dB
31
44
57
Kâ¦
±11.5 ±14 ±16
dB
1
2
3
dB
17.5
25
32.5
Kâ¦
±13 ±14 ±15
dB
1
2
3
dB
AV = 0 to -40dB
Data Word = 1111XXXX
AV = 0 to -40dB
Adjacent Attenuation Steps
79
dB
0.5
1
1.5
dB
80
100
dB
1.5
dB
0.1
3
mV
d = 0.3%
2.1
2.6
Vrms
2
Kâ¦
50
90
140
â¦
3.5
3.8
4.1
V
WIN = 11
WIN = 10
WIN = 01
WIN = 00
35
mV
70
mV
140
mV
280
mV
15
25
35
µA
3.0
V
5/23
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