- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98157 > TA8266HQ 23 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 PDF資料下載
參數(shù)資料
| 型號： | TA8266HQ |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 23 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封裝： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 314K |
| 代理商： | TA8266HQ |
TDF8544
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Objective data sheet
Rev. 1 — 10 August 2011
13 of 54
NXP Semiconductors
TDF8544
I2C-bus controlled 4
50 W power amplifier
7.4.5 Thermal pre-warning and thermal protection
If the average junction temperature reaches one of the adjustable levels set via the
I2C-bus, selected with IB3[D4], pre-warning is activated resulting in pin DIAG LOW (if
selected) and can be read via the I2C-bus. The default setting for the thermal pre-warning
is IB3[D4] = 0 setting the warning level at Tj(AV)(pwarn) = 160 C. In legacy mode the
thermal pre-warning is also set at Tj(AV)(pwarn) = 160 C.
If the temperature increases further, the temperature-controlled gain reduction is activated
for all four channels to reduce the output power; see Figure 9. If this does not reduce the
average junction temperature, all four channels are switched off at the absolute maximum
temperature Toff.
7.5 Diagnostics
Diagnostic information can be read via the I2C-bus, but can also be made available at pin
DIAG or pin STB. Pin DIAG indicates information such as POR occurred, low battery, and
high battery; the output load fault information is selectable via the I2C-bus. This
information is seen at pin DIAG as a logical OR. In case of a failure, pin DIAG remains
LOW and the microcontroller can read the failure information via the I2C-bus; pin DIAG
can be used as a microcontroller interrupt to minimize I2C-bus traffic. When the failure is
removed, pin DIAG is released.
To enable full control over the clipping information, pin STB can be programmed as a
second-clip detection pin. The clip detection level can be selected for all channels at once.
The clip information can be selected to be available separately at pin DIAG or at pin STB
for each channel. It is possible, for example,to distinguish between clipping of the front
and the rear channels.
The diagnostic information available at either of the two diagnostic pins DIAG and STB is
shown in Table 4.
Fig 9.
Temperature controlled amplifier gain
001aam696
10
20
30
G
(dB)
0
Tj (°C)
140
190
180
160
170
150
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TA8266H | 23 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8271HQ | 24 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8271H | 24 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8272HQ | 28 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8272HQ | AUDIO AMPLIFIER, PZFM26 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TA8271H | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Max Power 41 W BTL X 4 ch Audio Power IC |
| TA8271HQ | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Max Power 41 W BTL X 4 ch Audio Power IC |
| TA8272H | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Max Power 43 W BTL x 4 ch Audio Power IC |
| TA8273H | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic |
| TA8275 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Max Power 41 W BTL x 4 ch Audio Power IC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。
