TDA7420 Datasheet, PDF (6/29 Pages) STMicroelectronics – MULTIFUNCTIONAUDIO PROCESSOR

TDA7420
PREAMPLIFIER (VS = 8.5V; Tamb = 25°C; RIN = 600Ω; unless otherwise specified (see test circuit)
Symbol
RI
Vout DC
RO
II
GVO
GV
RN
RMLR
RMR
R_Mmax
R_Mmin
SR
eN
THD
SVR1
CS
CCT
S/N
Parameter
Input Resistance
Output Voltage DC (pin 40, 50)
Output Resistance (pins 40, 50)
Input Bias Current
Open Loop Gain
Closed Loop Gain
Resistance Normal Position
Resistance Metal Position
(left ,right)
Step Resolution (versus R_M)
Maximum Value for R_M
Minimum Value for RM
Dolby Level Control
Slew Rate
Total Input Noise
Output Attenuation Control
Total Harmonic Distortion
Ripple Rejection
Channel Separation (L to R)
Channel Cross talk (F to R)
Signal to Noise
Test Condition
f = 400Hz
NAB short
Control Range
Step Resolution
NAB Short
RIN= 600Ω; unweighted
RIN= 600Ω; CCIR warn
RIN= 0; unweighted
D1, D0 = 00
D1, D0 = 01
D1, D0 = 10
D1, D0 = 11
VO = 1V; f = 1KHz metal
VO = 1V; f = 1KHz normal
VO = 1V; f = 10KHz metal
VO = 1V; f = 10KHz normal
VO = 2V; f = 1KHz
VO = 388mV; metal; CCIR arm
AUDIO MUSIC SENSOR
IAMSOUT AMS Output Current
VAMSOUT AMS Output Low Level
R_i -₂₉
VTH1
Input Resistance AMS Gain
Interprogram Threshold Voltage
V_TH2
Interspace Threshold Voltage
AMSth AMS Threshold Level
VINTP
INTP Output Voltage
VINTS
INTS Output Voltage
INTP Charge Current
INTS Charge Current
SG
Gain Sensitivity
Ri - 30
AMS Gain Resistance
IAMOUT = 2mA
(pin 23)
I_OUT = 2mA
I_OUT = 2mA
min Gain V₃₀ vs V₂₉
max Gain V₃₀ vs V₂₉
D6, D5 = 00
D6, D5 = 01
D6, D5 = 11
Min.
100
3.2
100
31
50
2.85
3.42
2.28
5.5
0.25
-0.75
45
60
75
1.2
4.8
2.0
50
50
13
16.5
75
Typ.
3.5
200
110
32.5
250
3.8
5
4.56
3.04
6.0
0.5
1
0.8
0.5
0.45
0
-20
-23
-80
0.02
0.02
0.05
0.04
75
60
80
65
500
100
1.45
5.2
2.8
0.2
0.2
70
70
11
42
17.5
22
100
Max.
3.9
300
10
34
500
4.75
5.7
3.8
6.5
0.75
0.75
0.1
5
800
125
1.7
5.6
3.6
0.8
0.8
150
150
22
27.5
125
Unit
KΩ
V
Ω
µA
dB
dB
Ω
KΩ
%
KΩ
KΩ
dB
dB
V/µs
µV
µV
µV
dB
dB
dB
dB
%
%
%
%
%
dB
dB
dB
dB
mA
mV
KΩ
V
V
V
mV
mV
µA
µA
dB
dB
KΩ
KΩ
KΩ
6/29