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參數資料
| 型號： | TDF8546SD/N1 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 44 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27 |
| 封裝： | PLASTIC, SOT878-1, 27 PIN |
| 文件頁數： | 1/15頁 |
| 文件大小： | 511K |
| 代理商： | TDF8546SD/N1 |
1.
General description
The TDF8546 is one of a new generation of complementary quad Bridge-Tied Load (BTL)
audio power amplifiers intended for automotive applications. It has a best efficiency mode
with full I2C-bus controlled diagnostics, including start-up diagnostics. The TDF8546 can
operate at a battery voltage as low as 6 V making this amplifier suitable for stop/start-car
operation.
The new best efficiency principle uses a patented switch technique which reduces
switching distortion. To reduce power dissipation, the new best efficiency principle uses
the audio information on all four channels instead of only the front or rear signals.
Dissipation is more than 65 % less than standard BTL when used for front and rear
correlated audio signals. Dissipation is 35 % less than standard BTL when used for
uncorrelated (delayed) audio signals between front and rear, and 17 % less for
uncorrelated audio signals when the front or rear information is used.
The amplifier uses a complementary DMOS output stage in a Silicon-On-Insulator (SOI)-
based BCD process. The DMOS output stage ensures a high power output signal with
perfect sound quality. The SOI-based BCD process ensures a robust amplifier, where
latch-up cannot occur, with good separation between the four independent channels, with
every component isolated and without substrate currents.
2.
Features and benefits
Stop/start-car prepared: keeps operating without audible disturbance during engine
start at a battery voltage as low as 6 V
New best efficiency mode with patented low switching distortion
Extreme best efficiency mode (uses information from 4 channels) with 17 % less
dissipation for uncorrelated signals compared to 2-channel best efficiency mode.
Operates in either legacy (non I2C-bus) or I2C-bus modes (3.3 V and 5 V compliant)
Four hardware-programmable I2C-bus addresses
Can drive 2
and 4 loads
Speaker fault detection
Start-up diagnostics with load detection: open, short, present; filtered for door-slam
and chatter relays
AC load (tweeter) detection with low and high current mode
Gain select after start-up without audible disturbance
Independent selectable soft mute of front and rear channels
Programmable gain (26 dB and 16 dB), independently programmable for the front and
rear channels
TDF8546
I2C-bus controlled 4
45 W best efficiency amplifier
Rev. 3 — 30 August 2011
Product data sheet
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相關代理商/技術參數 |
參數描述 |
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| TDF8546TH/N1,518 | 功能描述:IC AUDIO AMP BTL QUAD AB 36HSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:D 類 輸出類型:1-通道（單聲道），帶立體聲耳機 在某負載時最大輸出功率 x 通道數量:930mW x 1 @ 8 歐姆; 40mW x 2 @ 16 歐姆 電源電壓:2.7 V ~ 5.5 V 特點:消除爆音，差分輸入，I²C，靜音，關閉，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) 其它名稱:MAX97000EWA+T-ND |
| TDF8546TH/N1518 | 功能描述:音頻放大器 Class-AB Amplifier RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDF8546TH/N2,118 | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDF8548AJ/N1U | 制造商:NXP Semiconductors 功能描述:TDF8548AJ/DBS27P/TUBE-BULK//N1 - Rail/Tube 制造商:NXP Semiconductors 功能描述:IC AUDIO DEVICE DBS27P |
| TDF8548ATH/N1J | 制造商:NXP Semiconductors 功能描述:TDF8548ATH/HSOP36/REEL13//N1 - Tape and Reel 制造商:NXP Semiconductors 功能描述:IC AUDIO DEVICE 36HSOP |
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