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Name: ADS7843E
Brand: Texas Instruments
SKU: ADS7843E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments ADS7843E

Part No.:: ADS7843E

Manufacturer:: Texas Instruments

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

Datasheet:: ADS7843E.pdf

Description:: IC SCREEN CNTRL 12BIT 16SSOP

In Stock:: 1170

Quantity:: Add To Cart

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ADS7843E this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including ADS7843E 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 ADS7843E 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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ADS7843E Typical application Circuitry

ADS7843E

The ADS7843E is a touch screen controller chip, specifically a 4-wire resistive touch screen controller, developed by Texas Instruments. It's an analog-to-digital converter (ADC) that interprets the touch inputs from a resistive touch screen panel and converts them into digital data. This chip is widely used in applications like portable devices (PDAs, GPS), touch screen monitors, and various other devices requiring user interaction via a touch interface.

Key Features of the ADS7843E:

1. Touch Screen Controller: The 4-wire resistive touch screen interface is specifically intended for use with the ADS7843E.

2. 12-Bit Resolution: It provides 12-bit resolution, ensuring accurate touch position detection.

3. Serial Interface: Features a serial interface compatible with SPI (Serial Peripheral Interface), allowing for easy integration with most microcontrollers.

4. Low Power Consumption:Due to its low power consumption, it is perfect for battery-powered applications.

Application Scenario: Touch Screen Interface for Portable Device

Circuit Connection Details:

1. Power Supply Connection: Connect the VCC pin of the ADS7843E to a stable power source, typically 2.7V to 5V.

2. Touch Screen Panel Connections: Attach the X+, X-, Y+, and Y- pins of the ADS7843E to the corresponding pins on a 4-wire resistive touch screen panel.

3. Serial Communication Setup: Interface the DCLK, DIN, DOUT, and CS (Chip Select) pins with the corresponding SPI pins on a microcontroller.

4. Auxiliary Pins: Utilize the PENIRQ (Pen Interrupt) pin for touch event detection and the BUSY pin for ADC conversion status.

Design Considerations:

1. Stable Power Supply: A consistent and noise-free power supply is crucial for the accurate functioning of the touch controller.

2. Touch Screen Quality and Calibration: Ensure the touch screen is of good quality and properly calibrated to work with the ADS7843E.

3. SPI Communication Integrity: Establish reliable SPI communication, considering signal integrity and synchronization with the microcontroller.

4. Physical Placement and Shielding: Consider the placement of the touch screen controller relative to the touch panel and other components to minimize electrical interference.

Conclusion

The ADS7843E is an optimal choice for implementing a touch screen interface in portable devices due to its specific design for 4-wire resistive touch screens, 12-bit resolution, SPI compatibility, and low power consumption. In designing circuits with the ADS7843E, attention to power supply quality, touch screen calibration, SPI communication reliability, and physical layout and shielding is essential to ensure responsive and accurate touch input functionality.

ADS7843E information

ADS7843E Specifications

Package/Case:
16-SSOP (0.154, 3.90mm Width)
Packaging:
Tube
Series:
-
ProductStatus:
Active
Touchscreen:
4 Wire Resistive
Resolution(Bits):
12 b
Interface:
Serial
VoltageReference:
External
Voltage-Supply:
2.7V ~ 5V
Current-Supply:
2.5 µA
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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6. What is the process for return or replacement of ADS7843E?

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 ADS7843E we delivered, we will accept the replacement or return of the ADS7843E 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 ADS7843E.

(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