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参数资料
| 型号： | YDA147 |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| 封装： | LEAD FREE, PLASTIC, SQFP-48 |
| 文件页数： | 35/36页 |
| 文件大小： | 1264K |
| 代理商： | YDA147 |
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YDA147
8
CATALOG No.:LSI-4DA147A61
AVDD
PLIMIT
AVSS
Voltage
Dividing
Resistor R1
Voltage
Dividing
Resistor R2
PLIMIT terminal setting circuit
·
Input Impedance
The input impedance (ZIN) is 18.8k regardless of a Gain setting.
·
Reference Voltage Output Function
Half a voltage of AVDD terminal is output to the reference voltage terminal (VREF).
Connect a capacitor of 0.1F for voltage stabilization.
·
Maximum Output
The output varies depending on load impedance and a supply voltage, as shown below.
Maximum Momentary Output:
20W × 2ch (PVDD=14V, RL=4, THD+N=10%)
15W × 2ch (PVDD=12V, RL=4, THD+N=10%)
Maximum Continuous Output:
15W × 2ch (VDDP=15V, RL=8, THD+N=10%, Ta=70°C, SQFP48, 4-layer board)
10.5W × 2ch (VDDP=15V, RL=4, THD+N=10%, Ta=25°C, SQFP48, 4-layer board)
10W × 2ch (VDDP=12V, RL=8, THD+N=10%, Ta=25°C, LQFP48, 1 layer board)
The maximum momentary output means a possible maximum output by considering heat problems due to power
loss separately.
The maximum continuous output means a maximum output with Tjmax not exceeding 150°C at a given
temperature while outputting a sine wave continuously. In addition, this value is based on Yamaha's board
implementation conditions. (See Note *2, *3 at Page 28)
A possible maximum continuous output in other settings can be converted by the following data:
1. Graph of Power Dissipation vs Output Power of Example of typical characteristics. (See Page 32)
2. Power Dissipation of Electrical Characteristics. (See Page 28)
●Control Function
·Output Power limit Function
This is the function to set a voltage at which the output is clipped.
At this time, a value at which the output is clipped is defined as a power limit value
(VPL).
Using this function prevents increase of temperature in a device as well as allowing
the maximum output power to be limited.
The output power limit value is determined by a voltage (voltage dividing resistor 1,
2) applied to PLIMIT terminal.
In addition, changing the voltage at PLIMIT terminal during power-on is prohibited.
The relation between a resistor ratio (R2/(R1+R2)(between voltage dividing resistor
1 and 2) and an output power with a 10% distortion is shown below.
Since it may vary between MIN and MAX due to variation of internal AVDD, select
resistors in consideration of the variation.
The setting values shown here are common to stereo and monaural mode.
PLIMIT resistor R1 and R2 should be set as follows.
R1+R2=500k or less
R1//R2=50k to 70k (R1//R2 means a parallel resistance between R1 and R2)
Example 1: 4 max30W (8 max15W)
R1=220k+4.7k, 、R2=75k
Example 2: 8 min10W
R1=200k, R2=75k+1.5k
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相关代理商/技术参数 |
参数描述 |
|---|---|
| YDA148-QZ | 制造商:Yamaha Corp Of America 功能描述:STEREO 5W - 15W DIGITAL AUDIO POWER AMPLIFIER, QFN32 |
| YDA1502 | 功能描述:DIPOL 150-174MHZ 2 RoHS:是 类别:RF/IF 和 RFID >> RF 天线 系列:* 标准包装:1 系列:* |
| YDA1504 | 功能描述:DIPOL 150-174MHZ 4 RoHS:是 类别:RF/IF 和 RFID >> RF 天线 系列:* 标准包装:1 系列:* |
| YDA160 | 制造商:Power-One 功能描述: |
| YDA2002 | 功能描述:DIPOL 200-225MHZ 2 RoHS:是 类别:RF/IF 和 RFID >> RF 天线 系列:* 标准包装:1 系列:* |
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