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參數(shù)資料
| 型號： | IRAUDAMP5 |
| 廠商： | International Rectifier |
| 英文描述： | 120W x 2 Channel Class D Audio Power Amplifier Using the IRS2092S and IRF6645 |
| 中文描述： | 120瓦× 2通道D類音頻功率放大器使用IRS2092S和IRF6645 |
| 文件頁數(shù)： | 29/49頁 |
| 文件大?。?/td> | 1416K |
| 代理商： | IRAUDAMP5 |
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20 kHz to 40 kHz, either higher “H” or lower “L.” The actual internal frequency is set
by potentiometer R113 - “INT FREQ.”
3. Switch S3 is an oscillator selector. This three-position switch is selectable for internal
self oscillator (middle position – “SELF”), or either internal (“INT”) or external
(“EXT”) clock synchronization.
PROTECTION
NORMAL
R119
1k
1A
1Y
2A
2Y
3A
3Y
GND
VCC
6A
6Y
5A
5Y
4A
4Y
U_3
74HC14
R120
C114
10nF, 50V
I
E
S
SW
S3A
SW-3WAY_A-B
R109
1K
R110
100k
C110
1nF, 50V
C112
1200pF, 50V
D103
1N4148
R116
47R
I
E
S
SW
S3B
SW-3WAY_A-B
EXT. CLK
A24497
J8
BNC
R115
47R
R114
R113
5K POT
R112
820R
C111
100pF, 50V
Q103
MMBT5551
2
1
S2
SW_H-L
R111
10K
C113
100pF, 50V
R117
47R
R118
1k
LED, Switches and Sync frequencies
Fig 31
MUTE
MUTE
+5V
+5V
CLK
CLK
Switching Frequency Lock / Synchronization Feature
For single-channel operation, the use of the self-oscillating switching scheme will yield the best
audio performance. The self-oscillating frequency, however, changes with the duty ratio. This
varying frequency can interfere with AM radio broadcasts, where a constant-switching frequency
with its harmonics shifted away from the AM carrier frequency is preferred. In addition to AM
broadcasts, multiple channels can also reduce audio performance at low power, and can lead to
increased residual noise. Clock frequency locking/synchronization can address these unwanted
characteristics.
Please note that the switching frequency
lock / synchronization feature is not possible for all
frequencies and duty ratios, and operates within a limited frequency and duty-ratio range around
the self-oscillating frequency (Figure 32 below).
www.irf.com
Page 28 of 49
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| IRAUDAMP6 | 制造商:International Rectifier 功能描述:AUDIO REFERENCE DESIGN KIT FEATURING IRS20957 - Boxed Product (Development Kits) 制造商:International Rectifier 功能描述:BOARD EVAL FOR IRS20957S |
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| IRAUDAMP8 | 功能描述:放大器 IC 開發(fā)工具 120W x 4 Ch Class D IRS2053M IRF665 BRD RoHS:否 制造商:International Rectifier 產品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| IRAUDAMP9 | 功能描述:音頻 IC 開發(fā)工具 1.7kW 2ohm Class-D IRS2092 IRFB4227 BRD RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
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