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PDF TDA7266 Data sheet ( Hoja de datos )
| Número de pieza | TDA7266 | |
| Descripción | 7+7W DUAL BRIDGE AMPLIFIER | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TDA7266 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
TDA7266
LINEAR INTEGRATED CIRCUIT
7+7W DUAL BRIDGE
AMPLIFIER
DESCRIPTION
The UTC TDA7266 is a 7+7W dual bridge amplifier specially
designed for TV and Portable Radio applications.
FEATURES
* Wide Supply Voltage Range (3 ~ 18V)
* Minimum External Components
* No SWR Capacitor
* No Bootstrap
* No Boucherot Cells
* Internally Fixed Gain
* Stand-BY & Mute Functions
* Short Circuit Protection
* Thermal Overload Protection
HZIP-15A
HZIP-15B
HZIP-15D
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
TDA7266L-J15-A-T
TDA7266G-J15-A-T
TDA7266L-J15-B-T
TDA7266G-J15-B-T
TDA7266L-J15-D-T
TDA7266G-J15-D-T
Package
HZIP-15A
HZIP-15B
HZIP-15D
Packing
Tube
Tube
Tube
www.unisonic.com.tw
Copyright © 2010 Unisonic Technologies Co., Ltd
1 of 8
QW-R107-037,C
1 page  
TDA7266
APPLICATION SUGGESTION
LINEAR INTEGRATED CIRCUIT
For Microprocessor Application
In order to avoid annoying ”Pop-Noise” during Turn-On/Off transients, it is necessary to guarantee the right ST-BY
and MUTE signals sequence. It is quite simple to obtain this function using a microprocessor (Fig 1 and Fig 2).
At first ST-BY signal (from mP) goes high and the voltage across the ST-BY terminal (Pin 7) starts to increase
exponentially. The external RC network is intended to turn-on slowly the biasing circuits of the amplifier, this to
avoid ”POP” and ”CLICK” on the outputs.
When this voltage reaches the ST-BY threshold level, the amplifier is switched-on and the external capacitors in
series to the input terminals (C3, C5) start to charge.
It’s necessary to maintain the mute signal low until the capacitors are fully charged, this to avoid that the device
goes in play mode causing a loud “Pop Noise” on the speakers.
A delay of 100 ~ 200ms between ST-BY and MUTE signals is suitable for a proper operation.
IN1
ST-BY
C1
0.22µF
R1
10k
4
7
C2
10µF
Vcc
3 13
C5
470µF
1 OUT1+
C6
100nF
S-GND 9
µP C3
2 OUT1-
0.22µF
IN2
TDA7266
12 15 OUT2+
MUTE
6
R2 C4
10k 1µF
PW-GND 8
14 OUT2-
Fig. 1 Microprocessor Application
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 8
QW-R107-037,C
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet TDA7266.PDF ] | |
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