TDA7342 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7342' PDF : 20 Pages View PDF
TDA7342
Electrical specifications
Table 4.
Electrical characteristics (continued)
(VS = 9V; RL = 10KΩ; Rg = 50Ω; Tamb = 25°C; all gains = 0dB; f = 1KHz. Refer
to the test circuit, unless otherwise specified.)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
Gstep
eN
Step resolution
Input noise
VDC 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
GIINto GIMAX
3
mV
RI Input resistance
CMRR
Common mode rejection
ratio
d Distortion
eIN Input noise
GDIFF Differential gain
Input selector BIT D6 = 0
(0dB)
10 15 20 KΩ
Input selector BIT D6 = 1(-
6dB)
14
20
30 KΩ
VCM = 1VRMS; f =1KHz
48 75
dB
f = 10KHz
45 70
dB
VI= 1VRMS
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
RI
GMAX
AMAX
ASTEPC
Input resistance
Maximum gain
Maximum attenuation
Step resolution coarse
attenuation
ASTEPF
Step resolution fine
attenuation
EA Attenuation set error
Et Tracking error
VDC 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 AMAX
0.5 5 mV
RI
AMAX
Astep
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
7/20
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