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参数资料
| 型号： | TB2902HQ |
| 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： | 3/40页 |
| 文件大小： | 579K |
| 代理商： | TB2902HQ |
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TB2902HQ
2006-04-28
11
B) Repetition mode
The turn ON diagnostic acquisition time is determined by the ripple filter capacitance C2 and
the equivalent internal resistance Rr as below expression.
Acquisition time
= 2 × C2 × Rr = 4400 × C2 (typ.)
Rr is fixed in internal circuit and it is not varied by the fluctuation of power supply VCC voltage.
C2 value determines the time from power ON (standby off) to the appearance of sound signal
from output and the characteristic for ripple rejection ratio, too. So, take care with the decision on
C2 value.
If the turn ON diagnosis is not used, in other words the diagnostic cycle defeat command is sent,
the waveform of ripple terminal voltage will change but the time from turning on to the output
signal appearance will not change as illustrated below in Figure 6.
Figure 6 Turn on Diagnosis Timing Chart when Turn on diagnosis not used.
WRITE DATA
Pin10
ripple
pin
voltage
Turn ON diagnosis enable
Turn ON diagnosis defeat
I
2C command
Pin 10
Writing
(diag cycle enable
= 1)
(stand by OFF
= 0)
Reading 2
Reading 3
About 100 ms
Diag enable
Fault event
Latch
DB1 D6
(acquisition time with only turn-ON)
Reading 4
Reading 5
Reading 6
About 80 ms
Maximum interval:
You can select the acquisition time.
Minimum interval:
It is determined by the speed of microcomputer.
About 80 ms
Reading 1
相关PDF资料 |
PDF描述 |
|---|---|
| TB2902HQ | 45 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2903HQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2903HQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2904HQ | 26 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2904HQ | 26 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TB2903HQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Maximum Power 47W BTL x 4-ch Audio Power IC |
| TB2904HQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Maximum Power 43 W BTL ?4-ch Audio Power IC |
| TB2905HQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Class KB High-Efficiency, Low-Frequency Power Amplifier IC Maximum Power: 47 W x 4 Channels |
| TB2905HQ(O) | 功能描述:音频放大器 25W x 4ch Class-KB Car Pwr Amp 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 |
| TB2906HQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Maximum Power 43 W BTL x 4-ch Audio Power IC |
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