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参数资料
| 型号： | TDA7480 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 10 W, 1 CHANNEL, AUDIO AMPLIFIER, PDIP20 |
| 封装： | PLASTIC, DIP-20 |
| 文件页数： | 4/10页 |
| 文件大小： | 182K |
| 代理商： | TDA7480 |
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VCC =
±14V; RL = 8; RS = 50;
Rf = 12K
; Demod.. filter L = 60H, C = 470nF; f = 1KHz; Tamb = 25°C unless otherwise specified.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VS
Supply Range
±10
±16
V
Iq
Total Quiescent Current
RL =
∞; NO LC Filter
25
40
mA
VOS
Output Offset Voltage
Play Condition
–50
+50
mV
PO
Output Power
THD = 10%
THD = 1%
8.5
6
10
7
W
RL = 4
VCC = ±10.5V
THD = 10%
THD = 1%
10
7
W
Pd (*)
Dissipated Power at 1W Output
Power
Rf = 12K
PΟ = 1W
1
W
PDMAX
Maximum Dissipated Power
PΟ = 10W THD 10%
Rth-j-amb = 38°C/W (Area 12cm
2)
1.8
W
η
Efficiency
≡
PO
+ PD
≡
PO
PI
(**)
THD 10%
Rth-j-amb = 38°C/W (Area 12cm
2)
80
85
%
THD
Total Harmonic Distortion
RL = 8
; PO = 0.5W
0.1
%
Imax
Overcurrent Protection
Threshold
RL = 0
3.5
5
A
Tj
Thermal Shut-down Junction
Temperature
150
°C
GV
Closed Loop Gain
29
30
31
dB
eN
Total Input Noise
A Curve
f = 20Hz to 22KHz
7
12
V
Ri
Input Resistance
20
30
K
SVR
Supply Voltage Rejection
f = 100Hz; Vr = 0.5
46
60
dB
Tr, Tf
Rising and Falling Time
50
ns
RDSON
Power Transistor on Resistance
0.4
FSW
Switching Frequency
100
120
140
KHz
FSW_OP
Switching Frequency Operative
Range
100
200
KHz
BF
Zero Signal Frequency
Constant (***)
1.4x10
9
Hz
RF
Frequency Controller Resistor
Range (****)
712
14
K
MUTE & STAND-BY FUNCTIONS
VST-BY
Stand-by range
0.8
V
VMUTE
Mute Range
1.8
2.5
V
VPLAY
Play Range (1)
4
V
AMUTE
Mute Attenuation
60
80
dB
IqST-BY
Quiescent Current @ Stand-by
3
5
mA
*: The output average power when the amplifier is playing music can be considered roughly 1/10 of the maximum output power. So it is useful
to consider the dissipated power in this condition for thermal dimensioning.
**: PO = measured across the load using the following inductor:
COIL 58120 MPPA2 (magnetics)
TURNS: 28
1mm
COIL77120 KOOL M
(magnetics)
TURNS: 28
1mm
***: The zero-signal switching frequency can be obtained using the following expression: FSW = BF/RF
****: The maximum value of RF is related to the maximum possible value for the voltage drop on RF itself.
(1): For V12 >5.2V, an input impedance of 10K
is to be considered.
TDA7480
3/10
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相关代理商/技术参数 |
参数描述 |
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| TDA7480L | 功能描述:音频放大器 10W Class D 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 |
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| TDA7482 | 功能描述:音频放大器 25W Mono Class D 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 |
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