Recently, Xiao E organizes its own database to find that the RF chip in the 5G era seems to have a small change. Small e Turk through its own database, found that the domestic RF chip has appeared when the OPPO K7X released in 2020.
This Samsung Galaxy A22 5G dismantled today seems to also confirm that domestic RF chips are not only used in domestic mobile phones.
E dismantles
First shut down the calorker, the plastic rear cover is heated through the hot air gun, and then open with suction cups and leathers, there are 1 bubble cotton on the left and right ends of the back cover, and the buffer effect. Plastic Trucks support two NANO-SIM cards and an SD card, up to 1TB extension.
The rear end cover of the PC material is fixed by a screw and snap, and the fingerprint recognition module is the groove card in the rear end cap. The rear camera cover is secured to the rear end cover through the snap, which is also relatively rare, generally through the adhesive fixation.
A total of 8 FPC antennas are integrated on both ends of the rear end cover.
Remove the speakers, motherboards, panels, and main panels of screws, and main panels, front and rear cameras and radio frequency coaxial lines. The earphone hole that is not canceled is located in the bottom of the whole machine and the USB TYPE-C interface is used as a dustproof effect.
The front and back of the motherboard has a large-scale copper foil heat dissipation, and the conductive silicone is applied at the CPU and memory flash position in the shield.
There is no battery fixed by easy-pull or easy pull rubber paper, which is directly deformed by the adhesion, and the battery is severely deformed.
Remove the handset, vibrator, side key soft plate and speaker adapter. Finally, the screen is separated by the heating station and the inner support, and only the top is attached to the top.
The screen uses a TFT screen that is a resolution of 6.6 inches 2408x1080.
Motherboard IC information
The main IC of the motherboard (below):
1: Media TEK-MT6833V- 天玑 700 八 Nuclear processor
2: Samsung-KMDP6001DA-B425-4GB memory + 64GB flash memory
3: Media TEK-MT6360UP-Power Management Chip
4: Media TEK-MT6631N- WiFi / BT / GPS / GLONASS / FM chip
5: Silicon Integrated- SIA8109-Smart Audio Amplifier
6: Smarter Micro-S15728- L-FEM
7: Smarter Micro-S55255-L-PAMIF
The main IC on the back of the motherboard (below):
1: Media TEK-MT6365VPW-Power Management Chip
2: Media TEK-MT6190MV-RF transceiver
3: 2 Smarter Micro-S15728- L-FEM
E analysis
Galaxy A22 5G uses Huizhi Microelectronics 5G RF front-end scheme, a total of 4 chip modules.
According to disclosure, A22 uses Huizhi Microelectronics global 5G new frequency band RF front end solution, and 1 S55255 is used to transmit the received N77 / 78/79 L-PAMIF and 3 S15728 for receiving N77 / 78 / 79 l-fem. The 4 chip modules are the second generation 5G RF front-end Agifem5G® 2.0 series products.
S55255 is a radio frequency module integrated with PA, filter, LNA, SRS switch and radio frequency transceiver switch, almost the highest integration level of the current 5G RF front end. Two or even 3 similar chips can be replaced by S55255 of the package size 5.5 x 4.5mm. This not only saves PCB board layout space, but also effectively reduces costs.
In fact, Huizhi Microelectronics S55255 This 5G RF chip has been used in the OPPO K7x that ewisetech has been dismantled. Since ewisetech dismantles 5G mobile phones, I first see the application of domestic RF front end.
Summary information
The internal structure of Galaxy A22 5G is simple, and the dismantling is relatively easy. It is worth noting that many domestic chips have been used in the whole machine. In particular, in the 5G RF scheme, the high integrated intensity of Huizhi Microelectronics 5g L-PAMIF RF module, full set of 5G new frequency band solutions.
Foreign companies such as Skyworks, Avago, Village and Qualcomm, have occupied most of the RF front-end markets, but there is a change in the 5G era. This may also confirm that the market in the radio industry has changed slowly from the side. The 5G era is coming to the domestic RF industry snapped up new machines. (: JUDY)
(The above content is reproduced from Ewistech Authorization)
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