TDA7402资料

VS = 9V; Tamb = 25°C; RL = 10kΩ; all gains = 0dB; f = 1kHz; unless otherwise specified
Symbol
Parameter
Test Conditio n
Min. Typ.
INPUT SELECTOR
Rin Input Resistance
元器件交易网
TDA7402
CARRADIO SIGNAL PROCESSOR
PRODUCT PREVIEW
s 3 STEREO INPUTS s 3 MONO INPUTS s DYNAMIC-COMPRESSION-STAGE FOR CD s SOFTSTEP-VOLUME s BASS, TREBLE AND LOUDNESS CONTROL s VOICE-BAND-FILTER s DIRECT MUTE AND SOFTMUTE s INTERNAL BEEP s FOUR INDEPENDENT SPEAKER-OUTPUTS s STEREO SUBWOOFER OUTPUT s INDEPENDENT SECOND SOURCE-
9
DIFFERENTIAL MONO INPUTS
Rin Input Impedance
Differential
40
56
CMRR Common Mode Rejection Ratio VCM = 1VRMS @ 1kHz
40
70
VCM = 1VRMS @ 10kHz
40
60
BEEP CONTROL
separate Mute
Subwoofer
single-ended stereo output
independent stereo level controls in 1dB steps
control range 95dB
separate Mute
Mute Functions direct mute
VRMS Beep Level
Mix-Gain = 6dB
350
fBeep Beep Frequency
fBeep1
600
fBeep2
780
fBeep1
1.56
fBeep1
2.4
MIXING CONTROL
MLEVEL Mixing Ratio
Main / Mix-Source
-6/-6
Max. 130 +1
1 single-ended stereo input
2 differential mono input
1 single-ended mono input
In-Gain 0..15dB, 1dB steps
internal Offset-cancellation (AutoZero)
separate second source-selector
PIN CONNECTION (Top view)
ESD: All pins are protected against ESD according to the MIL883 standard.
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
VS
Operating Supply Voltage
March 2000
This is preliminary information on a new product now in development. Details are subject to change without notice.
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TDA7402
Treble
2nd order frequency response
center frequency programmable in 4 steps
+15 x 1dB steps
Voice Bandpass 2nd order butterworth highpass filter with programmable cut-off frequency
SOFT MUTE
AMUTE Mute Attenuation
TD Delay Time
T1
T2
T3
T4
VTH low Low Threshold for SM-Pin2
Min. Typ. Max. Unit
15
dB
-79
dB
1
dB
70
100
GCD Gain
only at true differential input
0
-6
-12
CMRR Common Mode Rejection Ratio VCM = 1VRMS @ 1kHz
46
70
VCM = 1VRMS @ 10kHz
46
60
eNO Output-Noise @ Speaker-Outputs 20Hz - 20kHz, flat; all stages 0dB
2nd order butterworth lowpass filter with programmable cut-off frequency
selectable flat-mode
Speaker
4 independent speaker controls in 1dB steps
control range 95dB
Beep
internal Beep with 4 frequencies
Mixing stage
Beep, Phone and Navigation mixable to all speaker-outputs
Loudness
programmable center frequency and frequency response
all single ended Inputs
70
100
VCL Clipping Level
2.2
2.6
SIN Input Separation
80
100
GIN MIN Min. Input Gain
-1
0
GIN MAX Max. Input Gain
15
GSTEP Step Resolution
1
ASTEP Step Resolution
EA Attenuation Set Error
G = -20 to +20dB G = -80 to -20dB
ET Tracking Error
VDC DC Steps
Adjacent Attenuation Steps From 0dB to GMIN
2:1 compression rate
programmable max. gain
Bass
2nd order frequency response
center frequency programmable in 8 steps
DC gain programmable
+ 15 x 1dB steps
SELECTOR s FULL MIXING CAPABILITY s PAUSE DETECTOR
TQFP44 ORDERING NUMBER: TDA7402
Digital Control: I2C-BUS INTERFACE
Stereodecoder: s RDS MUTE s NO EXTERNAL ADJUSTMENTS s AM/FM NOISEBLANKER WITH SEVERAL
50
mA
60
dB
Stereodecoder + Audioprocessor
55
dB
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BLOCK DIAGRAM
TDA7402
3/59
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TDA7402
Audioprocessor Part Features:
Input Multiplexer 2 fully differential CD stereo inputs with programmable attenuation
TRIGGER CONTROLS s PROGRAMMABLE MULTIPATH DETECTOR s QUALITY DETECTOR OUTPUT
DESCRIPTION
The device includes a high performance audioprocessor and a stereodecoder-noiseblanker combination with the whole low frequency signal processing necessary for state-of-the-art as well as future carradios. The digital control allows a programming in a wide range of all the filter characteristics. Also the stereodecoder part offers several possibilities of programming especially for the adaptation to different IF-devices.
VDC DC Steps
Adjacent Gain Steps
1
GMIN to GMAX
6
Voffset Remaining offset with AutoZero
0.5
DIFFERENTIAL STEREO INPUTS
Rin Input Resistance (see Figure 1)
Differential
digitally controlled SoftMute with 4 programmable mute-times
Pause Detector programmable threshold
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TDA7402
ELECTRICAL CHARACTERISTICS
Value 65
Unit °C/W
SUPPLY
Symbol
Parameter
VS Supply Voltage
IS
Supply Current
SVRR Ripple Rejection @ 1kHz
Test Conditio n
Min. Typ. Max. Unit
7.5
9
10
V
VS = 9V Audioprocessor (all Filters flat)
VDC DC Voltage Level
LOUDNESS CONTROL
ASTEP Step Resolution
AMAX Max. Attenuation
fPeak Peak Frequency
fP1
fP2
fP3
fP4
VOLUME CONTROL
GMAX Max. Gain
AMAX Max. Attenuation
Tamb
Operating Temperature Range
ቤተ መጻሕፍቲ ባይዱTstg
Storage Temperature Range
Value 10.5 -40 to 85 -55 to +150
Unit V °C °C
THERMAL DATA Symbol
Parameter
Rth j-pins Thermal Resistance Junction-pins max
130
Unit
kΩ VRMS
dB dB dB dB mV mV mV
kΩ
dB dB dB dB dB µV
kΩ dB dB
mV Hz Hz kHz kHz
dB
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TDA7402
ELECTRICAL CHARACTERISTICS (continued)
Symbol
15 x 1dB steps
selectable flat-mode (constant attenuation)
Volume
0.5dB attenuator
100dB range
soft-step control with programmable times
Compander
dynamic range compression for use with CD
Parameter
Test Conditio n
GMAX Max. Gain
AMAX Max. Attenuation
ASTEP Attennuation Step
MULTIPLEXER OUTPUT 1
ROUT Output Impedance
RL Output Load Resistance
CL Output Load Capacitance