TDA7437N Datasheet, PDF (4/23 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7437N
ELECTRICAL CHARACTERISTICS
(AV_DD, DV_DD = 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
INPUT SELECTOR (MONO AND STEREO INPUTS)
R_I Input Resistance
pin 7 to 11 and 15 to 18
V_CL Clipping Level
d ≤ 0.3%
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_a Set Error
V_DC DC Steps
Adiacent Gain Steps
G_IMIN to G_IMAX
DIFFERENTIAL INPUT (Pin 5, 6, 13, 14)
R_I Input Resistance
Input selector BIT D4 = 0 (0dB)
Input selector BIT D4 = 1(-6dB)
CMRR Common Mode Rejection Ratio V_CM = 1VRMS ; f = 1KHz
d
Distortion
V_I = 1VRMS
e_IN Input Noise
20Hz to 20KHz; Flat; D6 = 0
G_DIFF Differential Gain
D4 = 0
D4 = 1
VOLUME CONTROL
R_I Input Resistance
Pin 2 and 20
G_MAX Maximum Gain
A_MAX Maximum Attenuation
A_STEPC Step Resolution Coarse Atten.
E_A Attenuation Set Error
G = 16 to -20dB
G = -20 to -63dB
E_t Tracking Error
V_DC DC Steps
Adjacent Gain Steps
Adjacent Attenuation Steps
From 0dB to A_MAX
LOUDNESS CONTROL (Pin 4, 12)
R_I Internal Resistor
Loud = On
A_MAX Maximum Attenuation
A_step Step Resolution
ZERO CROSSING MUTE
V_TH Zero Crossing Threshold(note 1) WIN = 11
WIN = 10
WIN = 01
WIN = 00
A_MUTE Mute Attenuation
Min. Typ. Max. Unit
70
100 130
KΩ
2.1
2.6
VRMS
80
95
dB
2
KΩ
-0.75
0
+0.75 dB
14
15
16
dB
0.5
1.0
1.5
dB
-1.0
0
1.0
dB
0.5
10
mV
3
mV
10
14
45
-1
-7
15
20
KΩ
20
26
KΩ
70
dB
0.01 0.08
%
5
µV
0
1
dB
-6
-5
dB
31
44
57
KΩ
15
16
17
dB
61 63.75 66.5 dB
0.5
1.0
1.5
dB
-1.0
0
1.0
dB
-2.75
2.75 dB
2
dB
-5
+5
mV
-3
+3
mV
0.5
5
mV
35
50
65
KΩ
19
20
21
dB
0.5
1
1.5
dB
35
mV
70
mV
140
mV
280
mV
80
100
dB
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