TDA7348 Datasheet, PDF (4/14 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7348
ELECTRICAL CHARACTERISTICS (VS = 9V; RL = 10KΩ; Rg = 50Ω; Tamb = 25°C; all controls flat
(G = 0.3dB step 0dB); f = 1KHz. Refer to the test circuit, unless otherwise specified.)
Symbol
Parameter
INPUT SELECTOR
RI
Input Resistance
VCL
Clipping Level
S_I
Input Separation
RL
Output Load Resistance
G_{I MIN}
Minimum Input Gain
GI MAX Maximum Input Gain
Gstep
Step Resolution
e_N
Input Noise
V_DC
DC Steps
VOLUME CONTROL (1 + 2)
RI
GMAX
Input Resistance
Maximum Gain
A_MAX
A_STEPC
Maximum Attenuation
Step Resolution Coarse
Attenuation
ASTEPF Step Resolution Fine Attenuation
EA
Attenuation Set Error
Et
Tracking Error
VDC
DC Steps
ZERO CROSSING MUTE
VTH
Zero Crossing Threshold
(note 1)
A_MUTE
VDC
Mute Attenuation
DC Step
SOFT MUTE
AMUTE Mute Attenuation
T_DON
ON Delay Time
T_DOFF
OFF Current
VTHSM
R_INT
V_SMH
V_SML
Soft Mute Threshold
Pullup Resistor (pin 22)
(pin 22) Level High
(pin 22) Level Low
Test Condition
d ≤ 0.3%
20Hz to 20 KHz unweighted
Adiacent Gain Steps
G_IMIN to G_IMAX
(Only Volume 1)
G = 20 to -20dB
G = -20 to -58dB
Adiacent Attenuation Steps
From 0dB to AMAX
WIN = 11
WIN = 10
WIN = 01
WIN = 00
0dB to Mute
CCSM = 22nF; 0 to -20dB; I = IMAX
CCSM = 22nF; 0 to -20dB; I = IMIN
VCSM = 0V; I = IMAX
VCSM = 0V; I = IMIN
(note 2)
Soft Mute Active
Min.
70
2.1
80
2
-0.75
10.25
2.75
35
18.75
0.5
0.11
-1.25
-3
-3
80
45
0.7
20
25
1.5
35
3.5
Typ.
100
2.6
100
0
11.25
3.75
2.3
1.5
3
50
20
78.45
1.25
0.31
0
0
0.5
20
40
80
160
100
0
60
1
35
50
1
2.5
50
Max.
130
0.75
12.25
4.75
10
21.25
2.0
0.51
1.25
2
2
3
5
3
1.7
55
75
3.5
65
1
Unit
KΩ
VRMS
dB
KΩ
dB
dB
dB
µV
mV
mV
KΩ
dB
dB
dB
dB
dB
dB
dB
mV
mV
mV
mV
mV
mV
dB
mV
dB
ms
ms
µA
µA
V
KΩ
V
V
4/14