- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98165 > TAS5715PHPR (TEXAS INSTRUMENTS INC) 41.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 PDF資料下載
參數(shù)資料
| 型號： | TAS5715PHPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 41.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| 封裝： | 7 X 7 MM, GREEN, PLASTIC, HTQFP-48 |
| 文件頁數(shù)： | 16/74頁 |
| 文件大?。?/td> | 2771K |
| 代理商： | TAS5715PHPR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當(dāng)前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁
www.ti.com
SLOS645 – AUGUST 2010
overloaded, a second protection system triggers a latching shutdown, resulting in the power stage being set in
the high-impedance (Hi-Z) state. The device returns to normal operation once the fault condition (i.e., a short
circuit on the output) is removed. Current limiting and overcurrent protection are not independent for half-bridges.
That is, if the bridge-tied load between half-bridges A and B causes an overcurrent fault, half-bridges A, B, C,
and D are shut down.
Overtemperature Protection
The TAS5715 has an overtemperature-protection system. If the device junction temperature exceeds 150°C
(nominal), the device is put into thermal shutdown, resulting in all half-bridge outputs being set in the
high-impedance (Hi-Z) state and FAULT being asserted low. The TAS5715 recovers automatically once the
temperature drops approximately 30°.
Undervoltage Protection (UVP) and Power-On Reset (POR)
The UVP and POR circuits of the TAS5715 fully protect the device in any power-up/down and brownout situation.
While powering up, the POR circuit resets the overload circuit (OLP) and ensures that all circuits are fully
operational when the PVDD and AVDD supply voltages reach 7.6 V and 2.7 V, respectively. Although PVDD and
AVDD are independently monitored, a supply voltage drop below the UVP threshold on AVDD or on either PVDD
pin results in all half-bridge outputs immediately being set in the high-impedance (Hi-Z) state and FAULT being
asserted low.
SSTIMER FUNCTIONALITY
SSTIMER is used to reduced turnon pop. This is used only in AD mode. The SSTIMER pin uses a capacitor
connected between this pin and ground to control the output duty cycle when exiting all-channel shutdown. The
capacitor on the SSTIMER pin is slowly charged through an internal current source, and the charge time
determines the rate at which the output transitions from a near-zero duty cycle to the desired duty cycle. This
allows for a smooth transition that minimizes audible pops and clicks. When the part is shut down, the drivers are
high-impedance and transition slowly down through a 3-k
resistor, similarly minimizing pops and clicks. The
shutdown transition time is independent of the SSTIMER pin capacitance. Larger capacitors increase the start-up
time, whereas capacitors smaller than 2.2 nF decrease the start-up time. The SSTIMER pin should be left
floating for BD modulation.
CLOCK, AUTO DETECTION, AND PLL
The TAS5715 is a slave device. It accepts MCLK, SCLK, and LRCLK. The digital audio processor (DAP)
supports all the sample rates and MCLK rates that are defined in the clock control register .
The TAS5715 checks to verify that SCLK is a specific value of 32 fS, 48 fS, or 64 fS. The DAP only supports a 1 ×
fS LRCLK. The timing relationship of these clocks to SDIN is shown in subsequent sections. The clock section
uses MCLK or the internal oscillator clock (when MCLK is unstable, out of range, or absent) to produce the
internal clock (DCLK) running at 512 times the PWM switching frequency.
The DAP can autodetect and set the internal clock-control logic to the appropriate settings for all supported clock
rates as defined in the clock control register.
TAS5715 has robust clock error handling that uses the bulit-in trimmed oscillator clock to quickly detect
changes/errors. Once the system detects a clock change/error, it mutes the audio (through a single-step mute)
and then forces PLL to limp using the internal oscillator as a reference clock. Once the clocks are stable, the
system autodetects the new rate and reverts to normal operation. During this process, the default volume is
restored in a single step (also called hard unmute). The ramp process can be programmed to ramp back slowly
(also called soft unmute) as defined in volume register (0x0E).
SERIAL DATA INTERFACE
Serial data is input on SDIN. The PWM outputs are derived from SDIN. The TAS5715 DAP accepts serial data in
16-, 20-, or 24-bit left-justified, right-justified, or I2S serial data format.
Copyright 2010, Texas Instruments Incorporated
23
Product Folder Link(s): TAS5715
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TAS5715PHP | 41.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| TAS5716PAPR | 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
| TAS5716PAP | 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
| TAS5719PHPR | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| TAS5719PHP | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TAS5716 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-W Stereo Digital-Audio Power Amplifier With EQ and DRC |
| TAS5716PAP | 功能描述:音頻放大器 20W St Closed-loop I2S Audio Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5716PAPR | 功能描述:音頻放大器 20W St Closed-loop I2S Audio Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5717 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-W/15-W Digital Audio Power Amplifier with Integrated Cap-Free HP Amplifier |
| TAS5717EVM | 功能描述:音頻 IC 開發(fā)工具 TAS5717EVM Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。