參數(shù)資料
型號(hào)： 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(lèi)音頻功率放大器使用IRS2092S和IRF6645
文件頁(yè)數(shù)： 24/49頁(yè)
文件大?。?/td> 1416K
代理商： IRAUDAMP5
.
.
.
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0V
0V
LP Filter
L1
C23A
R
C25
Zobel Filter and Output filter demodulator
Fig 25
Output
Both outputs for the IRAUDAMP5 are single-ended and therefore have terminals labeled (+) and
(-), with the (-) terminal connected to power ground. Each channel is optimized for a 4-Ohm
speaker load for a maximum output power (120W), but is capable of operating with higher load
impedances (at reduced power), at which point the frequency response will have a small peak at
the corner frequency of the output LC low pass filter. The IRAUDAMP5 is stable with
capacitive-loading; however, it should be noted that the frequency response degrades with heavy
capacitive loading of more than 0.1μF.
Gain Setting / Volume Control
The IRAUDAMP5 has an internal volume control (potentiometer R108 labeled, ”VOLUME”, Fig
26) for gain adjustment. Gain settings for both channels are tracked and controlled by the volume
control IC (U_2), setting the gain from the microcontroller IC (U_1). The maximum volume
setting (clockwise rotation) corresponds to a total gain of +37.9dB (78.8V/V). The total gain is a
product of the power-stage gain, which is constant (+23.2dB), and the input-stage gain that is
directly-controlled by the volume adjustment. The volume range is about 100dB, with minimum
volume setting to mute the system with an overall gain of less than -60dB. For best performance
in testing, the internal volume control should be set to a gain of 21.9V/V, such that 1Vrms input
will result in rated output power (120W into 4
), allowing for a >11dB overdrive.
+5V
J5
J6
R4
100R
ZCEN
CS
SDATAI
VD+
DGRD
SCLK
SDATAO
MUTE
AINL
AGNDR
AOUTL
VA-
VA+
AOUTR
AGNDL
AINR
U_1
CS3310
R3
100R
R1
100K
R2
100K
R7
47R
R8
47R
R9
10R
R10
47R
R11
47R
C1
10uF, 50V
VSS
8
VR0
7
VR1
6
CLK
5
VDD
1
CS
2
SDATA
3
SIMUL
4
U_2
3310S06S
R
C
C107
4.7uF, 16V
C108
10nF, 50V
C109
4.7uF, 16V
Control Volume
Audio in
Audio in
Level OUT 1
Level OUT 2
Fig 26
Digital volume Control
MUTE
-5V
+5V
+5V
SCLK
SDATAI
CS
+5V
www.irf.com
Page 23 of 49
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IRAUDAMP7D 功能描述:放大器 IC 開(kāi)發(fā)工具 25W - 500W Scalable IRS2092 2-Ch BRD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類(lèi)型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
IRAUDAMP7S 功能描述:放大器 IC 開(kāi)發(fā)工具 25W - 500W Scalable IRS2092 Half BRG BRD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類(lèi)型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
IRAUDAMP8 功能描述:放大器 IC 開(kāi)發(fā)工具 120W x 4 Ch Class D IRS2053M IRF665 BRD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類(lèi)型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
IRAUDAMP9 功能描述:音頻 IC 開(kāi)發(fā)工具 1.7kW 2ohm Class-D IRS2092 IRFB4227 BRD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類(lèi)型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
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