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PDF TDA7491HV Data sheet ( Hoja de datos )
| Número de pieza | TDA7491HV | |
| Descripción | dual BTL class-D audio amplifier | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TDA7491HV
20 W + 20 W dual BTL class-D audio amplifier
Features
! 20 W + 20 W continuous output power:
RL = 8 Ω, THD = 10% at VCC = 18 V
! Wide range single supply operation (5 V - 19 V)
! High efficiency (η = 90%)
! Four selectable, fixed gain settings of 20 dB,
26 dB, 30 dB and 32 dB
! Differential inputs minimize common-mode
noise
! Filterless operation
! No ‘pop’ at turn-on/off
! Standby and mute features
! Short circuit protection
! Thermal overload protection
! Externally synchronizable
PowerSSO-36 with
exposed pad (or slug) down
Description
The TDA7491HV is a dual BTL class-D audio
amplifier with single power supply designed for
LCD TVs and monitors.
Thanks to the high efficiency and slug-down
package no heatsink is required.
Furthermore, the filterless operation allows a
reduction in the external component count.
The TDA7491HV is pin to pin compatible with the
TDA7491P and TDA7491LP.
Table 1. Device summary
Order code
Operating Temp. range
Package
Packing
TDA7491HV
0° to 70° C
PowerSSO-36 (slug down) Tube
TDA7491HV13TR
0° to 70° C
PowerSSO-36 (slug down) Tape and reel
December 2007
Rev 1
1/26
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26
1 page  
TDA7491HV
2 Pin description
2.1
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Pin-out
Figure 2. Pin connection (top view)
Pin description
5/26
5 Page 
TDA7491HV
Characterization curves
Figure 8. Cross talk vs frequency
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Cross Talk (dB)
+0
-10
-20
Vs =18V
-30
Rl =8 ohm
-40
0dB @ f =1kHz
-50
Po =1W
-60
-70
-80
-90
-100
20
50 100 200
Lo to R
500 1k
2k
Frequency (Hz)
Ro to L
5k 10k 20k
Figure 9.
Power dissipation and efficiency vs output power (per channel)
Pout Per Channel (W)
100 8
90 7
80
70
6
60 5
50 4
40 3
30
20
2
10 1
00
0 1 2 3 4 5 6 7 8 9 1011 121314 15161718 1920
Pout Per Channel (W)
Figure 10. Attenuation vs mute voltage
10.00
0.00
-10.00
-20.00
-30.00
-40.00
-50.00
-60.00
-70.00
-80.00
-90.00
0.00
0.50
Vs =18V
Rl =8 ohm
0 dB @ f =1kHz
Po =1W
1.00 1.50 2.00 2.50
Mute Voltage (V)
3.00
3.50
11/26
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet TDA7491HV.PDF ] | |
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