TDA7437 Datasheet, PDF (4/23 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7437
ELECTRICAL CHARACTERISTICS (AVDD, DVDD = 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
INPUT SELECTOR (MONO AND STEREO INPUTS)
RI
Input Resistance
VCL
Clipping Level
pin 7 to 11 and 15 to 18
d ≤ 0.3%
SI
Input Separation
RL
Output Load Resistance
GI MIN
Minimum Input Gain
GI MAX
Maximum Input Gain
Gstep
Step Resolution
Ea
Set Error
VDC
DC Steps
Adiacent Gain Steps
GIMIN to GIMAX
DIFFERENTIAL INPUT (Pin 5, 6, 13, 14)
RI
Input Resistance
Input selector BIT D4 = 0 (0dB)
Input selector BIT D4 = 1(-6dB)
CMRR Common Mode Rejection Ratio VCM = 1VRMS ; f =1KHz
d
Distortion
VI = 1VRMS
eIN
Input Noise
20Hz to 20KHz; Flat; D6 = 0
GDIFF
Differential Gain
D4 = 0
D4 = 1
VOLUME CONTROL
RI
Input Resistance
Pin 2 and 20
GMAX
Maximum Gain
AMAX
Maximum Attenuation
ASTEPC Step Resolution Coarse Atten.
EA
Attenuation Set Error
G = 16 to -20dB
G = -20 to -63dB
Et
Tracking Error
VDC
DC Steps
Adjacent Gain Steps
Adjacent Attenuation Steps
From 0dB to AMAX
LOUDNESS CONTROL (Pin 4, 12)
RI
Internal Resistor
Loud = On
AMAX
Maximum Attenuation
Astep
Step Resolution
ZERO CROSSING MUTE
VTH
Zero Crossing Threshold
(note 1)
WIN = 11
WIN = 10
WIN = 01
WIN = 00
AMUTE Mute Attenuation
VDC
DC Step
0dB to Mute
Min.
70
2.1
80
2
-0.75
14
0.5
-1.0
10
14
45
-1
-7
31
15
61
0.5
-1.0
-2.75
-5
-3
35
19
0.5
80
Typ.
100
2.6
95
0
15
1.0
0
0.5
3
15
20
70
0.01
5
0
-6
44
16
63.75
1.0
0
0.5
50
20
1
30
60
110
220
100
0.1
Max.
130
+0.75
16
1.5
1.0
10
20
26
0.08
1
-5
57
17
66.5
1.5
1.0
2.75
2
+5
+3
5
65
21
1.5
3
Unit
KΩ
VRMS
dB
KΩ
dB
dB
dB
dB
mV
mV
KΩ
KΩ
dB
%
µV
dB
dB
KΩ
dB
dB
dB
dB
dB
dB
mV
mV
mV
KΩ
dB
dB
mV
mV
mV
mV
dB
mV
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