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参数资料
| 型号： | TAS5414TDKDMQ1G4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 116 W, 4 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| 封装： | GREEN, PLASTIC, HSSOP-36 |
| 文件页数： | 8/43页 |
| 文件大小： | 978K |
| 代理商： | TAS5414TDKDMQ1G4 |
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Power FETs
Load Diagnostics
OUT1_M
OUT1_P
V
(OUT1_P – OUT1_M)
Speaker
Playback
/
Mute
Hi-Z
ChannelSynchronization
Phase1
Phase2
Phase3
Phase4
S2G
100ms
<100ms
S2P
100ms
OL
150ms
SL
150ms
~50ms
T0188-01
SLOS514A – FEBRUARY 2007 – REVISED JULY 2007
DESCRIPTION OF OPERATION (continued)
The BTL output for each channel comprises four rugged N-channel 30-V FETs, each of which has an RDSon of
75 m
for high efficiency and maximum power transfer to the load. These FETs are designed to handle large
voltage transients during load dump.
The TAS5414 and TAS5424 incorporate load diagnostic circuitry designed to help pinpoint the nature of output
misconnections during installation. The TAS5414 and the TAS5424 include functions for detecting and
determining the status of output connections. The following diagnostics are supported:
Short to GND
Short to PVDD
Short across load (R < 1 , typical)
Open load (R > 800 , typical)
Tweeter detection
The presence of any of the short or open conditions is reported to the system via I2C register read. The tweeter
detect status can be read from the CLIP_OTW pin when properly configured.
1. Output Short and Open Diagnostics—The TAS5414 and TAS5424 contain circuitry designed to detect
shorts and open conditions on the outputs. The load diagnostic function can only be invoked when the
output is in the Hi-Z mode. There are four phases of test during load diagnostics and two levels of test. In
the full level, all channels must be in the Hi-Z state. All four phases are tested on each channel, all four
channels at the same time. When fewer than four channels are in Hi-Z, the reduced level of test is the
only available option. In the reduced level, only short to PVDD and short to GND can be tested. Load
diagnostics can occur at power up before the amplifier is moved out of Hi-Z mode. If the amplifier is
already in play mode, it must Mute and then Hi-Z before the load diagnostic can be performed. By
performing the mute function, the normal pop- and click-free transitions occur before the diagnostics
begin. The diagnostics are performed as shown in Figure 13. Figure 14 shows the impedance ranges for
the open-load and shorted-load diagnostics. The results of the diagnostic are read from the diagnostic
register for each channel via I2C. Note: Do not send a command via I2C to register 0x0C during the load
diagnostic test.
Figure 13. Load Diagnostics Sequence of Events
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TAS5414TDKDQ1 | 功能描述:音频放大器 4-Ch Auto Dig 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 |
| TAS5414TDKDQ1G4 | 功能描述:音频放大器 4-Ch Auto Dig 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 |
| TAS5414TDKDRMQ1 | 功能描述:音频放大器 4-Ch Auto Dig 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 |
| TAS5414TDKDRMQ1G4 | 功能描述:音频放大器 4-Ch Auto Dig 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 |
| TAS5414TDKDRQ1 | 功能描述:音频放大器 4-Ch Auto Dig 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 |
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