TDA7342 Datasheet, PDF (4/14 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7342
ELECTRICAL CHARACTERISTICS (VS = 9V; RL = 10KΩ; Rg = 50Ω; Tamb = 25°C; all gains = 0dB;
f = 1KHz. Refer to the test circuit, unless otherwise specified.)
Symbol
Parameter
INPUT SELECTOR
R_I
Input Resistance
V_CL
Clipping Level
S_I
Input Separation
R_L
Output Load Resistance
G_{I MIN}
Minimum Input Gain
G_{I MAX} Maximum Input Gain
G_step
Step Resolution
e_N
Input Noise
V_DC
DC Steps
DIFFERENTIAL INPUT ( IN 3)
RI
Input Resistance
CMRR Common Mode Rejection Ratio
d
eIN
GDIFF
Distortion
Input Noise
Differential Gain
Test Condition
d ≤ 0.3%
20Hz to 20 KHz unweighted
Adiacent Gain Steps
G_IIN to G_IMAX
Input selector BIT D6 = 0 (0dB)
Input selector BIT D6 = 1(-6dB)
VCM = 1VRMS ; f =1KHz
f = 10KHz
VI = 1VRMS
20Hz to 20KHz; Flat; D6 = 0
D6 = 0
D6 = 1
Min.
70
2.1
80
2
-0.75
10.25
2.75
10
14
48
45
-1
-7
Typ.
100
2.6
100
0
11.25
3.75
2.3
1.5
3
15
20
75
70
0.01
5
0
-6
Max.
130
0.75
12.25
4.75
10
20
30
0.08
1
-5
Unit
KΩ
V_RMS
dB
KΩ
dB
dB
dB
µV
mV
mV
KΩ
KΩ
dB
dB
%
µV
dB
dB
VOLUME CONTROL
R_I
Input Resistance
GMAX
Maximum Gain
A_MAX
Maximum Attenuation
A_STEPC Step Resolution Coarse Atten.
A_STEPF Step Resolution Fine Attenuation
E_A
Attenuation Set Error
E_t
Tracking Error
V_DC
DC Steps
LOUDNESS CONTROL
R_I
Internal Resistor
A_MAX
Maximum Attenuation
A_step
Step Resolution
G = 20 to -20dB
G = -20 to -58dB
Adiacent Attenuation Steps
From 0dB to A_MAX
Loud = On
35
50
KΩ
18.75 20 21.25 dB
57.7 59.7 62.7 dB
0.5 1.25 2.0
dB
0.11 0.31 0.51 dB
-1.25
0
1.25 dB
-3
2
dB
2
dB
-3
0
3
mV
0.5
5
mV
35
50
65
KΩ
17.5 18.75 20.0 dB
0.5 1.25 2.0
dB
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