|
|
PDF TDA7495SA Data sheet ( Hoja de datos )
| Número de pieza | TDA7495SA | |
| Descripción | AMPLIFIER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TDA7495SA (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
|
No Preview Available !
www.datasheet4u.com
TDA7495SA
11 W + 11 W amplifier with DC volume control
Features
! 11 W + 11 W output power with
RL = 8 Ω, THD = 10%, VCC = 28 V
! Stand-by and mute functions
! Low turn-on and turn-off “pop” noise
! Linear volume control DC coupled to power
operational amplifier
! No boucherot cell
! No RC input network for stand-by
! Single supply up to 35 V
! Short-circuit protection
! Thermal overload protection
! Internally fixed gain
! Soft clipping
! Variable output after volume control circuit
! Clipwatt15 package, RoHS
Multipower BI50II technology
Clipwatt15
Description
The TDA7495SA is a stereo 11 W + 11 W
class AB power amplifier specially designed for
high-quality sound and TV applications. Its
features include linear volume control, stand-by
and mute functions. The TDA7495SA is delivered
in the Clipwatt15 package
PW_GND
11
INR
470nF
1
30K
VAROUT_R
2
VS
13
VOLUME
+
-
OP AMP
S_GND
8
INL
470nF
5
470µF
SVR 7
VOLUME
30K
VOLUME
3
MUTE/STBY
PROTECTIONS
+
-
OP AMP
4
VAROUT_L
+5V
100nF
300K
PW_GND
15
1000µF
14
OUTR
9 STBY
10K
10 MUTE
60K 1µF
12 OUTL
1000µF
D96AU440D
S1 ST-BY
+5V
S_GND
+5V
S2 MUTE
Table 1. Device summary
Order code
TDA7495SA
Clipwatt15
Package
Tube
Packaging
December 2007
Rev 2
1/15
www.st.com
15
1 page  
TDA7495SA
3 Applications
Applications
3.1 Circuit diagram and components
www.datasheet4u.com
Figure 2. Application circuit
+VS
C1
1000µF
PW_GND
11
INR
C2 470nF
1
30K
VAROUT_R
2
VS
13
VOLUME
+
-
OP AMP
S_GND
8
INL
C3 470nF
5
SVR 7
C4 470µF
VOLUME
30K
MUTE/STBY
PROTECTIONS
+
-
OP AMP
VOLUME
3
4
VAROUT_L
C5
100nF
R1 300K
TP1
VOL
P1
50K
LOG
C9
0.1µF
PW_GND
15
C8 1000µF
14
PW_GND
OUTR
S1 STBY
+5V
9
10 R2 10K
S_GND
C7
1µF
12
C6 1000µF
+5V
S2 MUTE
OUTL
PW_GND
STBY MUTE
Mode
L L Play
+5V L H Mute
D96AU493D
H
L
Standby
H H Standby
The recommended values of the external components are those shown on the application
circuit of Figure 2. Table 6 below indicates how the performance changes when component
values different to the recommended are used.
Table 6. Application suggestions
Symbol
Suggested
value
Purpose
Larger than
suggestion
Smaller than
suggestion
R1
300 kΩ Volume control circuit
Larger volume regulation Smaller volume
time regulation time
R2 10 kΩ Mute time constant
Larger mute on/off time Smaller mute on/off time
P1
50 kΩ
Volume control
C1 1000 µF
C2, C3 470 nF
Supply voltage decoupling
Input AC coupling
Lower low-frequency
cutoff
Danger of oscillation
Higher low-frequency
cutoff
C4 470 µF Ripple rejection
C5
100 nF
Volume control time
constant
Better SVR
Worse SVR
Larger volume regulation Smaller volume
time regulation time
C6, C8 1000 µF Output AC coupling
Lower low-frequency
cutoff
Higher low-frequency
cutoff
C7 1 µF
Mute time constant
Larger mute on/off time Smaller mute on/off time
C9 100 nF Supply voltage decoupling
Danger of oscillation
5/15
5 Page 
TDA7495SA
4 Thermal considerations
Thermal considerations
www.datasheet4u.com
In order to avoid the intervention of the thermal protection, it is important to choose an
adequate heatsink.
The parameters that influence the heatsink size are:
" maximum dissipated power for the device (Pdmax)
" maximum thermal resistance junction to case (RTh j-c)
" maximum ambient temperature Tamb_max
Example:
For VCC = 20 V, RL = 8 Ω, RTh j-c = 5° C/W, Tamb_max = 50° C
Pdmax = Number_of_channels *
-----V-----c---c---2-------
2Π2 ⋅ RL
=5W
For the heatsink,
RTh j-c
=
1----5---0-----–-----T---a---m----b---_---m---a---x-
Pd max
–
RTh
j-c
=
1----0---0-- – 5
5
=
15°C/W
Figure 25 shows the power derating curve for the device.
Figure 25. Power derating curve
20
15
(d) (a)
10
(b)
5 (c)
a) Infinite Heatsink
b) 7 °C/ W
c) 10 °C/ W
d) 3.3 °C/ W
0
0 40 80 120 160
Tamb (°C)
11/15
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet TDA7495SA.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TDA7495S | 11W+11W AMPLIFIER |  ST Microelectronics |
| TDA7495SA | AMPLIFIER | STMicroelectronics |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |