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参数资料
| 型号： | TS4974IQT |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频控制 |
| 英文描述： | 1 CHANNEL(S), VOLUME CONTROL CIRCUIT, DSO10 |
| 封装： | 3 X 3 MM, 0.50 MM PITCH, ROHS COMPLIANT, DFN-10 |
| 文件页数： | 1/25页 |
| 文件大小： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| TS4975 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Stereo Headphone Drive Amplifier with Digital Volume Control via I2C Bus |
| TS4975_05 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Stereo Headphone Drive Amplifier with Digital Volume Control via I2C Bus |
| TS4975EIJT | 功能描述:音频放大器 Stereo headphone 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 |
| TS4982IQT | 功能描述:音频放大器 2W Stereo Audio Amp 125 mW 16 ohm 3 lvl 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 |
| TS4984 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2 x 1W Stereo audio power amplifier with active low standby mode |
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