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| 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： | 14/53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
21 of 53
NXP Semiconductors
TDF8599
I2C-bus controlled dual channel class-D power amplier
8.6.2.3
AC load detection
AC load detection is only available in I2C-bus mode and is controlled using bit IB3[D4].
The default setting for bit IB3[D4] = 0 disables AC load detection. When AC load detection
is enabled (bit IB3[D4] = 1), the amplier load current is measured and compared with a
reference level. Pin CLIP is activated when this threshold is reached. Using this
information, AC load detection can be performed using a predetermined input signal
frequency and level. The frequency and signal level should be chosen so that the load
current exceeds the programmed current threshold when the AC coupled load (tweeter) is
present.
Fig 20. Recommended start-up sequence with DC load detection enabled
001aaj061
NO
YES
restart
DC load
start amplifier
anyway
I2C-bus TX
IB1[D0] = 1
startup
IB2[D2] = 1
enable DC load
IB1[D1] = 1
disable channel 1
IB2[D1] = 1
disable channel 2
I2C-bus RX
DB1[D4] = 1
channel 1 open load
DB2[D4] = 1
channel 2 open load
DB1[D6] = 1
DC load valid
I2C-bus TX
IB1[D0] = 1
startup
IB2[D2] = 0
disable DC load
IB1[D1] = 0
enable channel 1
IB2[D1] = 0
enable channel 2
I2C-bus TX
IB1[D0] = 1
startup
IB2[D2] = 0
disable DC load
IB1[D1] = 1
disable channel 1
IB2[D1] = 1
disable channel 2
I2C-bus TX
IB1[D0] = 1
startup
IB2[D2] = 1
enable DC load
IB1[D1] = 1
disable channel 1
IB2[D1] = 1
disable channel 2
ERROR HANDLING
COUNT = 0
WAIT DC load
COUNT = COUNT + 1
DB1[D6] = 1
DC load valid
COUNT
≤ COUNTMAX
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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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