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LPA4890-Class AB Amplifiers
产品型号
输入电压(V)
类型
输出功率(W)
输出通道
PSRR(dB)
增益控制
短路保护
关断电流(uA)
封装
规格书
LPA4890
2.5-5.5
Class AB
1.25W,5V@8Ω,1%
1
-70
X
X
1
MSOP-8
1.2-Walts Mono Filter-free Audio Power Amplifier
General Description
The LPA4890 is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The LPA4890 is capable of delivering 1.2W of continuous average power to an 8Ω load and with less than 1% distortion (THD+N) from a 5.2V power supply, and 350mW to a 8Ω load from a 3V power supply. The LPA4890 provides high quality audio while requiring few external components and minimal power consumption. It features a low-power shutdown mode, which is achieved by driving the SHUTDOWN pin with logic low. The LPA4890 contains circuitry to prevent from “pop and click” noise that would otherwise occur during turn-on and turn-off transitions. For maximum flexibility, the LPA4890 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on and turn-off times (with the bypass capacitor). The LPA4890 is available in a MSOP8 package.
Applications
PMP,PSP, Game, Data-Bank
Cellular and Smart mobile phone
Features
2.5-5.5V Operation Voltage
63dB PSRR at 217Hz, VDD=5V
0.1µA ultra low current shutdown mode
Improved pop & click circuitry
Unique Modulation Scheme Reduces EMI Emissions
0.1-µA Shutdown Current
No output coupling capacitors, snubber networks or bootstrap capacitors required
External gain configuration capability
Shutdown Pin has 0.4V Compatible Thresholds
BTL output can drive capacitive loads
RoHS compliant and 100% lead(Pb)-free
Marking Information
Please see specification.
Please ask our service mailbox for what you want which is
marketing@lowpowersemi.com
.
We will send a copy to you as fast as we can.