Charging head network got a Samsung Galaxy Tab A9++ tablet, its model is SM-X210, configured in a 4+64G version. This tablet is built with a Qualcomm Snapdragon 695 octa-core processor and comes with an 11-inch screen with a resolution of 1920*1200. The tablet has cameras on the front and back, with an 8-megapixel rear camera and a 5-megapixel front camera.
This tablet has a built-in 7040mAh battery, and the charger that comes with it is 5v155A, the measured charging power is 7W, with the use of fast charging charger, the charging power can reach 14W, effectively shortening the charging time. Let's bring a teardown of Samsung's tablet, and let's take a look at the materials and design inside.
The box has a minimalist design, with the Galaxy Tab series, the product exterior, and the Galaxy Tab A9++ name printed on the top.
The side sticker is printed with the flat model SM-X210, the color scheme (mountain rock gray), specifications, precautions, and information about Samsung.
In addition to the Samsung Galaxy Tab A9++ tablet, the package also includes a charger, a data cable, a card pick-up pin, an instruction manual, and a three-pack certificate.
The included data cable is a USB-A to USB-C cable with a regular white color scheme.
This charger continues the classic design of the Samsung charger family, with charger parameter information printed on the back of the fuselage, the model is EP-TA50CBC, and it supports 100-240V 50 60Hz 03A input, as well as 5v155A output, production date is August 23, passed CCC certification.
The USB-A port is located on the fuselage side.
Using the ChargerLab Power-Z KT003, this charger supports Samsung 5V2A, DCP charging protocol.
Samsung Galaxy Tab A9++ tablet has three colors: Mountain Rock Gray, Galaxy Silver, and Ocean Blue, the body is 11 inches, a little larger than the previous generation, and the front is equipped with a WUXGA display, supporting 1920 1200 resolution and a maximum 90Hz refresh rate, with a peak brightness of up to 570 nits, giving users a good ** experience.
There is also a 5-megapixel front camera on the front.
The Samsung Galaxy Tab A9+ is designed based on a minimalist style, and the metal body on the back brings a silky touch to give users a good grip experience.
One end of the back is laser-engraved with the Samsung brand.
The other end is equipped with an 8-megapixel rear camera.
The center sticker can learn about the product model, storage configuration, certification and other information. The Galaxy Tab A9+ is available in 4+64G Wi-Fi, 8+128G Wi-Fi and 8+128G 5G variants.
At the top of the fuselage are the classic power and volume button design.
There is also a microphone on top.
There is a keyboard interface and a micro SD card tray at the bottom.
The keyboard interface contact design is very convenient for you to put and use at any time.
The Galaxy Tab A9+ card tray combines a SIM card and a micro SD card slot in one.
There is also a USB-C port, dual speakers, and a headphone jack on one side.
There is also a light sensor next to the USB-C port.
Close-up of the headphone jack.
Close-up of the speaker, with seven sound holes.
The experience on the other side of the fuselage is equipped with two speakers that support Dolby Atmos, allowing users to have an immersive listening experience.
Charge your Samsung Galaxy Tab A9+ with the charging kit that comes in the package, and the measured charging power is 508v 1.39a 7.09w。
Use a USB-A charger that supports QC fast charging with a USB-A to USB-C cable to charge the Samsung Galaxy Tab A9+, and the measured charging power is 892v 1.56a 13.87w。
Charge the Samsung Galaxy Tab A9+ with a USB-C to USB-C cable with a USB-C port that supports PD fast charging, and the charging power is measured to be 884v 1.55a 13.71w。
It can be seen that the Samsung Galaxy Tab A9+ supports QC PD fast charging, and for a better charging experience, it is recommended that users equip this tablet with a charger that supports QC PD fast charging.
Start by cutting the glue along the screen border to open the screen.
Unscrew the platen that holds the cable and fix the cable of the screen cable and the keyboard interface contact under the platen.
Disconnect the screen from the motherboard and proceed with the disassembly.
The back of the screen is connected by a cable, and the metal back plate is pasted with cushioning foam and graphite thermal conductive sticker.
A glance inside the fuselage, with a long motherboard on the top, a battery on the bottom, two speakers on the left and right sides of the fuselage, and a cable on the right side to connect the tail plug and memory card slot and 35mm headphone jack.
Close-up of the cable connecting the motherboard to the tail plug, which is fixed by the pressure plate.
Remove the platen that holds the motherboard in place.
Close-up of the front camera.
The rear camera is secured by a bracket.
Unscrew the set screws and remove the rear camera.
Close-up of the socket connected to the speaker.
Remove the motherboard from the housing.
The internal battery of the tablet is produced by Scud (Fujian) Electronics***, and the nominal voltage of the battery is 385V, rated capacity of 6820mAh, rated energy of 2625wh。The typical capacity of the battery is 7040mAh 271wh, the charging limit voltage is 44v。
A glance on the front of the motherboard, with a shield on the right side and a copper foil pasted to enhance heat dissipation.
The SMD capacitor is soldered at the SOC on the back of the motherboard, and the shrapnel is soldered at the edge for connection to the internal contacts of the housing.
The motherboard is pasted with heat dissipation copper foil at the position of the SoC and power management chip.
The heat dissipation copper foil is coated with a blue-green thermal conductive gel between the chip and the chip.
Thermal gel is also applied to the SoC and memory and PMIC locations.
The shield is windowed for the position of the heating chip, which is convenient for gluing and heat conduction.
The tablet SOC chip comes from Qualcomm, silkscreen SM6375, which is a 695 5G mobile platform, the chip is manufactured on a 6nm process, and the internal integration of KRYO CPU is designed for 8 cores and has two built-in 22GHz A78 cores and six 1.7GHz A55 core with Adreno 619 GPU integrated X51 5G baseband.
The EMCP chip is from Samsung, model KM5P9001DM-B424, built-in 64GB UFS22 memory and 4GB LPDDR4X memory at 4266Mbps in a 254 FBGA package.
The Qualcomm PM6375 PMIC is used to power the SoC and memory chips.
Inside the other shield is a charging chip, coated with gel to enhance heat dissipation.
Remove the shield, and weld the battery charging chip, MCU, battery metering chip, etc. inside the shield.
The battery charging chip comes from Chenxin, silkscreen printing 5890H, the actual model is CX25890H, it is a synchronous fast charging chip that supports 5A charging current, and supports NVDC path management. The chip integrates 5A high-efficiency synchronous step-down charging, supports single-cell lithium battery applications, and supports high-voltage fast charging input. The chip supports USB OTG output.
The chip integrates step-down and path management MOS tubes, current sensing and loop compensation, integrated ADC for system monitoring, battery charging current, charging voltage, and input current can be programmed through the I2C interface, supporting temperature detection during battery charging and discharging, and has perfect over-voltage and over-current protection, with over-temperature power drop and over-temperature protection functions. The chip adopts WQFN4*4-24 package.
Close-up of the pad on the back of the chip.
Using vernier calipers, the chip edge length is about 4mm.
A list of all dismantling and a family photo.
The Samsung Galaxy Tab A9+ tablet is equipped with a Qualcomm Snapdragon 695 octa-core processor with 4+64 and 8+128G capacities, and is also available in a Wi-Fi version and a 5G version to meet the needs of mobile Internet access. The tablet is equipped with an 11-inch display with front and rear cameras, which can meet the needs of daily online classes and other uses. In addition, it also supports fast charging, which can recover blood in a short time, and the use experience is better.
Through the dismantling of the charging head network, it was learned that this tablet uses a Qualcomm Snapdragon 695 processor and Samsung KM5P9001DM-B424 EMCP memory for application processing and data storage. The internal use of 7040mAh large-capacity battery to meet the long-term battery life. The motherboard chip is coated with a thermally conductive gel that dissipates heat in contact with the heat dissipation copper foil to reduce the temperature rise.
The battery charging chip comes from Chenxin Semiconductor, model CX25890H, which is a switching step-down charging chip with NVDC path management, the output current can reach 5A, and supports reverse OTG output, output voltage and current and other parameters can be configured through the I2C interface, and the functions are very comprehensive.