參數(shù)資料
型號: LM1875
廠商: 友順科技股份有限公司
英文描述: 20W AUDIO POWER AMPLIFIER
中文描述: 20瓦音頻功率放大器
文件頁數(shù): 3/6頁
文件大小: 150K
代理商: LM1875
UTC LM1875
LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO. LTD
3
QW-R107-019,B
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
Input Bias current
Iib
±0.2
±2
A
Input Offset Current
IIO
0
±0.5
A
Gain-Bandwidth Product
GBW
Fo=20kHz
5.5
MHz
Open Loop Gain
Gv
DC
90
dB
Power Supply Rejection Ratio
PSRR
Vcc,1kHz,1 Vrms
VEE,1kHz,1 Vrms
95
83
52
dB
Max Slew Rate
SR
20W,8Ω,70kHz BW
8
V/s
Current Limit
ILIM
VOUT=VSUPPLY – 10V
4
3
A
Equivalent Input Noise
Voltage
en
Rs=600Ω,CCIR
3
Vrms
Note 1: Assumes the use of a heat sink having a thermal resistance of 1℃/W and no insulator with an ambient
temperature of 25℃.Because the output limiting circuitry has a negative temperature coefficient,the maximum output
power delivered to a 4Ωload may be slightly reduced when the tab temperature exceeds 55℃.
TYPICAL APPLICATIONS(CONTINUED)
+Vcc
C1
VIN
C3
LM1875
+
_
1
2
3
4
5
R4
1M
R1
22k
R2
22k
C4
C7
+
C6
+
R7
1
C5
R6
200k
R5
10k
+
R3
22k
C2
4Ω~ 8Ω
100μF
2200μF
+
10μF
1.0μF
10μF
0.22μF
0.1μF
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