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參數(shù)資料
| 型號： | TS4974IQT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 1 CHANNEL(S), VOLUME CONTROL CIRCUIT, DSO10 |
| 封裝： | 3 X 3 MM, 0.50 MM PITCH, ROHS COMPLIANT, DFN-10 |
| 文件頁數(shù)： | 1/25頁 |
| 文件大?。?/td> | 319K |
| 代理商： | TS4974IQT |
May 2007
Rev 4
1/25
25
TS4974
1W differential audio power amplifier
with up/down digital volume control pins
Features
■ Operates from VCC= 2.5 V to 5.5 V
■ Zero pop & click
■ 1 W output power @ VCC =5V, THD=1%,
F = 1 kHz, with 8
Ωload
■ Ultra-low consumption in standby mode (2 A
max.)
■ 85 dB PSRR @ 217Hz
■ 16-step digital volume control
■ Two discrete up and down volume control pins
■ Gain range from -33 dB to + 12 dB
■ Integrated debouncing system
■ Ultra-fast start-up time: 15 ms typ.
■ DFN10 3x3 mm (pitch 0.5)
Applications
■
Mobile phones (cellular / cordless)
■
PDAs
■
Laptop/notebook computers
■
Portable audio devices
Description
At 3.3 V, the TS4974 is a dual power audio
amplifier capable of delivering 380 mW of
continuous RMS output power into a 8
Ω bridged-
tied loads with 1% THD+N. An external standby
mode control reduces the supply current to less
than 2 A. An internal over-temperature shutdown
protection is provided.
The TS4974 has been designed for high quality
audio applications such as mobile phones and
minimizes the number of external components
necessary.
The TS4974 features 16-step digital volume
control through two discrete Up and Down control
pins. The start-up gain is internally fixed to
-12 dB. An integrated debounce system prevents
voltage spikes on the UP/DOWN pins during
volume control mode from being taken into
account during a debounce time of 10 ms (typ).
Pin connections (top view)
DFN10 (3x3)
1
2
3
4
10
BYPASS
VIN-
UP / DVC
VCC
STANDBY
5
9
8
7
6
DOWN / DVC
GND
VIN+
VOUT-
VOUT+
1
2
3
4
10
BYPASS
VIN-
UP / DVC
VCC
STANDBY
5
9
8
7
6
DOWN / DVC
GND
VIN+
VOUT-
VOUT+
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| TS4975EIJT | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PBGA12 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS4975 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Stereo Headphone Drive Amplifier with Digital Volume Control via I2C Bus |
| TS4975_05 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Stereo Headphone Drive Amplifier with Digital Volume Control via I2C Bus |
| TS4975EIJT | 功能描述:音頻放大器 Stereo headphone 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS4982IQT | 功能描述:音頻放大器 2W Stereo Audio Amp 125 mW 16 ohm 3 lvl 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS4984 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 x 1W Stereo audio power amplifier with active low standby mode |
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