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参数资料
| 型号： | TS4902IS |
| 厂商： | 意法半导体 |
| 英文描述： | 300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW |
| 中文描述： | 在3.3V电源音频功率放大器具有待机模式300mW的低电平 |
| 文件页数： | 4/19页 |
| 文件大小： | 399K |
| 代理商： | TS4902IS |
TS4902
4/19
ELECTRICAL CHARACTERISTICS
V
CC
=
2.6V
, GND =
0V
, T
amb
= 25°C (unless otherwise specified)
REMARKS
1.
All measurements, except PSRR measurements, are made with a supply bypass capacitor Cs = 100μF.
2.
The standby response time is about 1μs.
Symbol
Parameter
Min.
Typ.
Max.
Unit
I
CC
Supply Current
No input signal, no load
5.5
8
mA
I
STANDBY
Standby Current
1)
No input signal, Vstdby = GND, RL = 8
1. Standby mode is actived when Vstdby is tied to GND
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc @ f = 217Hz
10
1000
nA
Voo
Output Offset Voltage
No input signal, RL = 8
5
20
mV
Po
Output Power
THD = 1% Max, f = 1kHz, RL = 8
180
mW
THD + N
Total Harmonic Distortion + Noise
Po = 200mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8
0.15
%
PSRR
Power Supply Rejection Ratio
2)
f = 217Hz, RL = 8
,
RFeed = 22K
,
Vripple = 200mV rms
77
dB
Φ
M
Phase Margin at Unity Gain
R
L
= 8
, C
L
= 500pF
70
Degrees
GM
Gain Margin
R
L
= 8
, C
L
= 500pF
20
dB
GBP
Gain Bandwidth Product
R
L
= 8
2
MHz
Components
Functional Description
Rin
Inverting input resistor which sets the closed loop gain in conjunction with Rfeed. This resistor also
forms a high pass filter with Cin (fc = 1 / (2 x Pi x Rin x Cin))
Cin
Input coupling capacitor which blocks the DC voltage at the amplifier input terminal
Rfeed
Feed back resistor which sets the closed loop gain in conjunction with Rin
Cs
Supply Bypass capacitor which provides power supply filtering
Cb
Bypass pin capacitor which provides half supply filtering
Cfeed
Low pass filter capacitor allowing to cut the high frequency
(low pass filter cut-off frequency 1 / (2 x Pi x Rfeed x Cfeed))
Rstb
Pull-up resistor which fixes the right supply level on the standby pin
Gv
Closed loop gain in BTL configuration = 2 x (Rfeed / Rin)
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相关代理商/技术参数 |
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|---|---|
| TS4902IST | 功能描述:音频放大器 300mW Audio Pwr 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 |
| TS4909 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Dual mode low power 150mW stereo headphone amplifier with capacitor-less and single-ended outputs |
| TS4909IQT | 功能描述:音频放大器 Capacitr-less output 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 |
| TS494 | 制造商:TSC 制造商全称:Taiwan Semiconductor Company, Ltd 功能描述:Voltage Mode PWM Controller |
| TS494CD | 制造商:TSC 制造商全称:Taiwan Semiconductor Company, Ltd 功能描述:Voltage Mode PWM Controller |
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