Part Number: XPT4890, XPT4890SO
Function: Audio Power Amplifier
Package: MSOP, SOP 8 Pin
Manufacturer: XPT ( www.xptek.cn, www.xptek.com.cn )
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Description
The XPT4890 is an audio power amplifier for mobile phones and portable communication devices. At 5V operating voltage, the maximum drive power is 1.1W (8 Ohm BTL load), and the total harmonic distortion noise in the audio range is less than 1% (20Hz~20KHz).
The XPT4890’s application circuit is simple and requires only a few peripherals. The XPT4890 output does not require an external coupling capacitor or a lifting capacitor. It is packaged in MSOP and CSP to save circuit area. It is ideal for low-voltage, low-power applications such as mobile phones and various mobile devices.
The XPT-4890 eliminates the effects of power-up and power-down with innovative “switching/switching noise” suppression technology.
The XPT4890 is stable, has a gain-bandwidth product of up to 2.5MHz, and is stable with unity gain. The amplifier’s voltage gain can be adjusted by configuring the peripheral resistor for ease of use.
Block Diagram
Features
1. High supply voltage rejection ratio (PSRR), 70dB at 217Hz and 1KHz
2. Low noise and harmonic distortion (THD+N), less than 1% (5V working voltage, output power is 1.1W)
3. Capable of driving capacitive loads up to 500pF
4. Power-down mode leakage current is small, less than 0.1uA
5. Small package, saving circuit area: MSOP, SOP
6. Power-on, power-down noise suppression
7. Wide operating voltage range 2.0V-5.5V
8. No need to drive the output coupling capacitor
9. Unity gain is stable
10. User selectable high and low control sleep mode
Pinout
Aapplication :
1. Mobile phone (mobile phone, etc.)
2. Personal mobile terminal PDA
3. Mobile electronic devices
4. Consumer Electronics (MP3/MP4/DFP/Protable DVD)
XPT4890 Datasheet
