3. TECHNICAL BRIEF

Audio AMP

 

 

 

 

 

 

 

 

NCP2890DMR2

 

SPK_AMP_EN

 

 

 

1

_SD

OUTB

8

 

 

 

 

REV_C : 20K --> 3K

R426

2

BYPASSU402 VM

7

 

 

 

 

 

 

R427

1K

C422

0.1u

R4285.6K

20K

3

 

VP

6

LINE_N

 

INP

 

 

C423

0.1u

 

 

 

 

LINE_P

R429

1K

 

 

4

INM

OUTA

5

 

 

R4305.6K

 

 

 

5600p

C4275600p

 

 

 

 

 

 

 

 

 

 

R431

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C426

 

 

20K

 

 

 

 

 

 

 

 

 

C431

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NA

 

 

 

C425

10u

C428

1u

1000p C429

1000p C430

SPK-

+VPWR

SPK+

L401

100nH

RCVN

SPK_RCV-

 

 

L402

100nH

RCVP

SPK_RCV+

 

 

REV_E : For Antenna Radiation

Audio part schematics

- 66 -

Page 64 Page 66
Page 65
Image 65
LG Electronics U250 service manual Audio AMP, Audio part schematics
Page 64 Page 66

U250 specifications

The LG Electronics U250 is a distinguished device known for its cutting-edge features and innovative technologies within the mobile phone sector. Launched as part of LG's effort to cater to a growing demand for functional yet stylish smartphones, the U250 boasts an array of characteristics that appeal to a savvy clientele.

One of the primary features of the U250 is its impressive display. Sporting a vibrant screen that offers excellent color reproduction and clarity, it enhances the user experience for gaming and multimedia consumption. The responsive touchscreen interface allows for seamless navigation, making it user-friendly for all age groups.

The U250 is powered by a robust processor that ensures smooth performance, whether multitasking between applications or running demanding games. With ample RAM, it minimizes lag and enhances the overall operating experience, allowing users to switch effortlessly between tasks.

Photography enthusiasts will appreciate the U250's advanced camera system. It is equipped with a high-resolution primary camera that captures stunning images in various lighting conditions. The inclusion of features like autofocus and image stabilization significantly elevates the quality of photos and videos. Additionally, the front-facing camera is designed for high-quality selfies and video calls, ensuring that users can always stay connected.

The device supports a range of connectivity options, including 4G LTE, Bluetooth, and Wi-Fi, ensuring users can remain connected to the world around them. The integration of NFC technology also enables quick and convenient transactions, particularly useful in a cashless society.

Battery life is another standout characteristic of the U250. With a durable battery, it offers extended usage time, allowing users to go through their day without the constant worry of recharging. Coupled with fast-charging capabilities, it reduces downtime significantly.

The LG U250 runs on an intuitive operating system that provides easy access to a plethora of apps on the platform. Customization options are abundant, allowing users to tailor their device's appearance and functionality to suit their preferences.

In conclusion, the LG Electronics U250 combines striking design with versatile functionality, making it a formidable entry in the smartphone market. With its impressive display, powerful performance, advanced camera features, and strong battery life, the U250 is poised to meet the needs of modern users seeking both style and substance in a mobile device. Whether for work or leisure, this smartphone is designed to enhance everyday life.
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