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Analog Devices Inc. AD7843ARQZ

Part No.:: AD7843ARQZ

Manufacturer:: Analog Devices Inc.

Package:: 16-SSOP (0.154, 3.90mm Width)

Datasheet:: AD7843ARQZ.pdf

Description:: IC SCREEN CNTRL 12BIT 16QSOP

In Stock:: 2566

Quantity:: Add To Cart

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AD7843ARQZ Specifications

Package/Case:
16-SSOP (0.154, 3.90mm Width)
Packaging:
Bulk,Tube
Series:
-
ProductStatus:
Active
Touchscreen:
4 Wire Resistive
Resolution(Bits):
12 b
Interface:
Serial
VoltageReference:
External
Voltage-Supply:
2.2V ~ 5.25V
Current-Supply:
-
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

AD7843ARQZ this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including AD7843ARQZ price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for AD7843ARQZ to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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AD7843ARQZ information

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AD7843ARQZ Typical application Circuitry

AD7843ARQZ

The AD7843ARQZ is a pivotal member of the AD7843 series, a collection of touch screen controllers developed by Analog Devices. This series stands out for its precision in interfacing with resistive touchscreens, translating touch locations into digital signals with high accuracy. The AD7843ARQZ, in particular, is optimized for use in portable devices, such as PDAs and smartphones, where precise touch input is essential. Its packaging, denoted by the "ARQZ" suffix, specifies a 16-lead QSOP (Quarter Size Outline Package), making it suitable for compact electronic assemblies.

1. Series Overview: The AD7843 series exemplifies Analog Devices' commitment to providing advanced solutions for touchscreen technology. The AD7843ARQZ, with its 12-bit resolution and on-chip voltage reference, enables accurate and reliable touch position sensing. This capability is critical in applications requiring user input through touch interfaces, such as navigation devices, medical monitors, and interactive kiosks.

2. Circuit Integration: Incorporating the AD7843ARQZ into a circuit demands a comprehensive understanding of its pin layout and functional connections. The device features pins dedicated to power supply (VDD, GND), analog inputs (X+, X-, Y+, Y-), digital I/O (DIN, DOUT, CS, CLK), and the voltage reference (REF). Proper connection of these pins is crucial for the AD7843ARQZ to function correctly. For instance, the analog input pins must be connected to the touchscreen's resistive layers, allowing the AD7843ARQZ to measure voltage variations when the screen is touched.

3. Power Supply and Grounding: The AD7843ARQZ operates with a single power supply ranging from 2.2V to 5.25V, accommodating various application voltages. Careful decoupling of the power supply through capacitors near the VDD and GND pins is essential to minimize noise and ensure stable operation. Grounding practices are equally important, as a well-designed ground plane helps in reducing signal interference, enhancing the precision of touch detection.

4. Detailed Pin Utilization: The correct usage of each pin contributes significantly to the overall performance of the AD7843ARQZ. The CS (chip select) pin governs the device's activation, ensuring that it only communicates with the microcontroller when necessary, thereby conserving power. The CLK (clock) pin coordinates the timing of data transfer, while DIN and DOUT facilitate the bidirectional flow of control commands and touch data, respectively. Ensuring these pins are accurately connected and configured within the system is pivotal for achieving responsive and accurate touch inputs.

5. System Integration Considerations: Integrating the AD7843ARQZ into a touchscreen system not only involves electrical connections but also software calibration to interpret the digital output accurately. The device's compatibility with SPI and serial interfaces allows for flexible communication with a wide range of microcontrollers. Designers must account for the physical layout, including the routing of signal lines and the placement of decoupling capacitors, to mitigate the effects of electromagnetic interference on touch sensitivity.

In summary, the AD7843ARQZ is a cornerstone in the development of interactive touch systems, offering precision, flexibility, and ease of integration. Its design and operational features allow for high-fidelity touch input detection, making it a go-to choice for designers seeking to enhance user interaction through touch technology. By meticulously planning the power supply, pin connections, and system integration, the AD7843ARQZ can be harnessed to deliver exceptional performance in touchscreen applications.

AD7843ARQZ FAQ

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3. Are the AD7843ARQZ price and inventory displayed accurate?

The price and inventory of AD7843ARQZ fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

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Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.

6. What is the process for return or replacement of AD7843ARQZ?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the AD7843ARQZ we delivered, we will accept the replacement or return of the AD7843ARQZ only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of AD7843ARQZ.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations