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参数资料
| 型号： | TB2932HQ |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 45 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封装： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件页数： | 23/30页 |
| 文件大小： | 255K |
| 代理商： | TB2932HQ |
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TB2932HQ
2007-07-01
3
Caution and Application Information (description is made referring only on the
single channel.)
External Component Values
Effect
Component
Name
Recommended
Value
Purpose
Lower than Recommended
Value
Higher than Recommended
Value
Notes
C1
0.22
F
To eliminate DC
Cut-off frequency becomes
higher
Cut-off frequency becomes
lower
Pop noise is
concerned with
this capacitor.
C2
10
F
To reduce ripple
To determine the
time of turn on
diag
Power ON/OFF time and turn
ON diag cycle shorter
Power ON/OFF time and turn
ON diag cycle longer
C3
0.1
F
To provide
sufficient
oscillation margin
Reduces noise and provides sufficient oscillation margin
C4
4.7
F
To reduce pop
noise
Pop noise becomes larger
Muting ON/OFF time is
shorter
Pop noise becomes smaller
Muting ON/OFF time is
longer
C5
3900
F
Ripple filter
Power supply ripple filtering
Note 3: In case of the recommended value not used.
1.
Fast Mute Mode
This feature will normally be used to suppress pop noise resulting from VCC transients during engine
cranking condition.
The fast mute mode can be entered on receipt of a command via I2C bus.
Using the IB2 register and setting to ‘one’ the bit D6, it is possible to generate a fast I2C mute command.
If a fast mute command is received, this IC will operate and will discharge the built-in capacitor .
Therefore the Pop sound will be reduced compared to the condition when Fast Mute is not used in the
engine cranking condition.
2.
IC start up procedure
As for this product, to decrease an quiescent current with the stand-by state, the I2C BUS communication
possible condition and the simple condition in case of the turning on exist.
Please confirm of the request the following contents in the limit of the set design.
1) The hardware stand-by state
It doesn't impress the external voltage (5V/3.3V) and it says the time when the Ripple voltage potential is
large to the ClipDet terminal ( 4 pins ).In case of this condition, it becomes Istby=0.
2) The software stand-by state
When impressing the external voltage (5V/3.3V) on the ClipDet terminal ( 4 pins ), the internal reference of
VDD amplifier starts-up, it becomes I2C BUS communication will possible condition.
In case of this condition, it becomes Istby=30uA.
3) The IC operation condition
In I2C BUS command (Stby L¨ H), when sending by the Write command, the charging by the Ripple voltage
(terminal) begins after the switchover to the condition of the above 2).
When the Ripple voltage(terminal) reaches the value of the wish by this, it becomes an IC operation condition.
Therefore, before communicating in I2C BUS, it impresses voltage on the ClipDet terminal once and VDD must
be started.
VDD stands up and after the I2C BUS communication becomes possible, because this terminal functions as the
ClipDet terminal, only in IC start-up, it requests sequence setting to impress potential.
Incidentally, because it touches much more by the separate section about the conduct of the ClipDet terminal, .
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TB2932HQ(O) | 功能描述:音频放大器 49W x 4-CH class -AB car power amplifer RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TB2939HQ(O) | 功能描述:音频放大器 45W x 4-CHANNEL car power amplifer RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TB2946HQ(O) | 功能描述:音频放大器 49W x 4-CH Class-AB car power amplifer RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TB2955HQ(O) | 功能描述:音频放大器 45W 4-CH High-EFF car power amplifer RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TB-2B.7-AL | 制造商:OKW ENCLOSURES INC 功能描述:ENCLOSURE, TB-2B, WHITE, 6.299 X 3.7 X 1.24 INCHES |
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