TDA7342_06 Datasheet, PDF (7/20 Pages) STMicroelectronics – Digitally controlled audio processor

TDA7342
Electrical specifications
Table 4.
Electrical characteristics (continued)
(V_S = 9V; R_L = 10KΩ; R_g = 50Ω; T_amb = 25°C; all gains = 0dB; f = 1KHz. Refer
to the test circuit, unless otherwise specified.)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
G_step
e_N
Step resolution
Input noise
V_DC DC Steps
Differential input (IN 3)
2.75 3.75 4.75 dB
20Hz to 20 KHz unweighted
2.3
μV
Adjacent gain steps
1.5 10 mV
G_IINto G_IMAX
3
mV
R_I Input resistance
CMRR
Common mode rejection
ratio
d Distortion
e_IN Input noise
G_DIFF Differential gain
Input selector BIT D6 = 0
(0dB)
10 15 20 KΩ
Input selector BIT D6 = 1(-
6dB)
14
20
30 KΩ
V_CM = 1V_RMS; f =1KHz
48 75
dB
f = 10KHz
45 70
dB
V_I= 1V_RMS
20Hz to 20KHz; Flat; D6 = 0
0.01 0.08 %
5
μV
D6 = 0
-1
0
1 dB
D6 = 1
-7 -6 -5 dB
Volume control
R_I
G_MAX
A_MAX
A_STEPC
Input resistance
Maximum gain
Maximum attenuation
Step resolution coarse
attenuation
A_STEPF
Step resolution fine
attenuation
E_A Attenuation set error
E_t Tracking error
V_DC DC Steps
Loudness control
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
G = 20 to -20dB
-1.25 0 1.25 dB
G = -20 to -58dB
-3
2 dB
2 dB
Adjacent attenuation Steps -3
0
3 mV
From 0dB to A_MAX
0.5 5 mV
R_I
A_MAX
A_step
Internal resistor
Maximum attenuation
Step resolution
Zero crossing mute
Loud = On
35 50 65 KΩ
17.5 18.75 20.0 dB
0.5 1.25 2.0 dB
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