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参数资料
| 型号： | TDF8599TD |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 70 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| 封装： | PLASTIC, SOT851-2, HSOP-36 |
| 文件页数： | 8/53页 |
| 文件大小： | 329K |
| 代理商： | TDF8599TD |
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TDF8599_2
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 30 July 2009
16 of 53
NXP Semiconductors
TDF8599
I2C-bus controlled dual channel class-D power amplier
8.5.4 Window protection
Window Protection (WP) checks the PWM output voltage before switching from Standby
mode to Mute mode (with both outputs switching) and is activated as follows:
During the start-up sequence:
– When the TDF8599 is switched from standby to mute (td(stb-mute)). When a short
circuit on one of the output terminals (i.e. between VP or GND) is detected, the
start-up procedure is interrupted and the TDF8599 waits for open circuit outputs.
No large currents ow in the event of a short circuit to the supply lines because the
check is performed before the power stages are enabled.
During operation:
–
A short to one of the supply lines activates OCP causing the amplier channel to
shutdown. After 50 ms the amplier channel restarts and WP is activated.
However, the corresponding amplier channel will not start-up until the supply line
short circuit has been removed.
8.5.5 DC offset protection
DC offset Protection (DCP) is activated when the DC content in the demodulated output
voltage exceeds a set threshold (typically 2 V). DCP is active in both Mute mode and
Operating mode. Figure 15 shows how false triggering of the DCP by low frequencies in
the audio signal is prevented using the external capacitor (CF) to generate a cut-off
frequency.
Fig 15. DC offset protection and diagnostic output
001aai785
OUT1P
OUT1N
V to I
OUT2P
OUT2N
DCP
DIAG
switch off channels
IB1[D6]
IB2[D6]
V to I
Vref
SQ
DB1[D2]
IB1[D7]
IB2[D7]
S4
50 k
S3
CF
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDF8599TD/N2,512 | 功能描述:音频放大器 IC AMP AUDIO PWR 85W D 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 |
| TDF8599TD/N2,518 | 功能描述:音频放大器 IC AMP AUDIO PWR 85W D 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 |
| TDF8599TH | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:I2C-bus controlled dual channel 43 W/2 W single channel 85 W/1 W class-D power amplifier with load diagnostics |
| TDF8599TH/N2,512 | 功能描述:音频放大器 IC AMP AUDIO PWR 85W D 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 |
| TDF8599TH/N2,518 | 功能描述:音频放大器 IC AMP AUDIO PWR 85W D 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 |
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