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Name: ADS7846NG4
Brand: Texas Instruments
SKU: ADS7846NG4
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 ADS7846NG4

Part No.:: ADS7846NG4

Manufacturer:: Texas Instruments

Package:: 16-TSSOP (0.173, 4.40mm Width)

Datasheet:: ADS7846NG4.pdf

Description:: IC SCREEN CNTRL 12BIT 16TSSOP

In Stock:: 2721

Quantity:: Add To Cart

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ADS7846NG4 Specifications

Package/Case:
16-TSSOP (0.173, 4.40mm Width)
Packaging:
Tube
Series:
-
ProductStatus:
Discontinued at Mosen
Touchscreen:
4 Wire Resistive
Resolution(Bits):
12 b
Interface:
SPI
VoltageReference:
External, Internal
Voltage-Supply:
2.2V ~ 5.25V
Current-Supply:
500 µA
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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ADS7846NG4 information

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ADS7846NG4 Application Introduction

ADS7846NG4 is a touchscreen controller commonly used in embedded systems for interfacing with resistive touchscreens. It provides accurate touch position detection and supports various communication interfaces, making it ideal for a wide range of applications.

Application Scenario:

In designing a portable medical device, ADS7846NG4 can be utilized to implement a user-friendly touchscreen interface for inputting patient data and navigating the device's functionalities.

Circuit Design:

To effectively integrate ADS7846NG4 into the design, consider the following optimization techniques:

1. Power Management:

Ensure efficient power supply design to ADS7846NG4 to minimize power consumption and extend battery life in portable applications. Utilize low-dropout voltage regulators and power-saving modes to reduce overall power consumption.

2. Signal Integrity:

Pay attention to signal integrity by minimizing noise and interference in the touch sensor traces. Proper grounding techniques and signal shielding can help maintain signal integrity and improve touchscreen performance.

3. Touchscreen Calibration:

Implement touchscreen calibration routines to compensate for variations in the resistive touchscreen's characteristics, ensuring accurate touch position detection across the entire active area.

4. Communication Interface:

Select the appropriate communication interface, such as SPI or I2C, based on the system requirements and available microcontroller resources. Ensure proper signal routing and interface configuration for reliable communication between ADS7846NG4 and the microcontroller.

5. Thermal Management:

Manage heat dissipation effectively to prevent overheating of ADS7846NG4 and ensure reliable operation over extended periods. Incorporate thermal vias, heat sinks, or passive cooling techniques to dissipate heat generated during operation.

Considerations:

When designing with ADS7846NG4, it's essential to consider:

- Touchscreen Calibration: Regular calibration to maintain accurate touch performance, especially in harsh environmental conditions or over extended use.

- EMI/EMC Compliance: Ensure proper layout and grounding to minimize electromagnetic interference and comply with electromagnetic compatibility regulations.

- System Integration: Integrate ADS7846NG4 seamlessly with the overall system architecture, considering factors such as firmware compatibility, interface protocols, and power management schemes.

- User Experience: Optimize the touchscreen interface for intuitive user interaction, considering factors such as touch sensitivity, response time, and graphical feedback.

- Reliability Testing: Conduct thorough testing to verify the reliability and performance of the touchscreen interface under various operating conditions, including temperature extremes and mechanical stress.

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6. What is the process for return or replacement of ADS7846NG4?

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 ADS7846NG4 we delivered, we will accept the replacement or return of the ADS7846NG4 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 ADS7846NG4.

(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