ADS7846E/2K5
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Texas Instruments ADS7846E/2K5

Manufacturer No:
ADS7846E/2K5
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC SCREEN CNTRL 12BIT 16SSOP
Delivery:
Payment:
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Product Introduction

Overview

The Texas Instruments ADS7846E/2K5 is a next-generation touch screen controller, designed to be 100% pin-compatible with the industry standard ADS7843. This controller is part of the resistive touch screen category and features a 4-wire interface. It operates within a wide supply voltage range of 2.2V to 5.25V, making it versatile for various applications. The ADS7846E/2K5 is fabricated on a 0.6µm CMOS process and includes an internal 2.5V reference voltage, which can be overdriven by an external low impedance source if needed.

Key Specifications

Parameter Description Value
Manufacturer Texas Instruments
Part Number ADS7846E/2K5
Package SSOP-16-150mil
Interface SPI
Supply Voltage 2.2V to 5.25V
Operating Temperature -40°C to +85°C
Resolution 12-bit
Quiescent Current 280 µA to 650 µA (Internal Reference OFF), 780 µA (Internal Reference ON)
Power Dissipation 1.8 mW at +VCC = +2.7V
ROHS Status ROHS Compliant

Key Features

  • 4-Wire Resistive Touch Screen Interface: Supports standard 4-wire resistive touch screens.
  • Internal Reference Voltage: Includes an internal 2.5V reference voltage that can be overdriven by an external source.
  • Wide Supply Voltage Range: Operates from 2.2V to 5.25V, making it suitable for a variety of applications.
  • Low Power Consumption: Features low quiescent current and power dissipation, ideal for battery-powered devices.
  • Temperature Measurement: Capable of measuring temperature without the need for absolute temperature calibration.
  • Pin Compatibility: 100% pin-compatible with the ADS7843, simplifying upgrades and design changes.

Applications

  • Touch Screen Displays: Ideal for resistive touch screen applications in various devices such as smartphones, tablets, and industrial control panels.
  • Portable Electronics: Suitable for battery-powered devices due to its low power consumption.
  • Industrial Automation: Used in touch screen interfaces for industrial control systems and human-machine interfaces (HMIs).
  • Medical Devices: Can be used in medical devices that require touch screen interfaces, such as patient monitoring systems and medical tablets.

Q & A

  1. What is the operating supply voltage range of the ADS7846E/2K5?

    The ADS7846E/2K5 operates within a supply voltage range of 2.2V to 5.25V.

  2. What is the resolution of the ADS7846E/2K5 touch screen controller?

    The resolution of the ADS7846E/2K5 is 12-bit.

  3. Is the ADS7846E/2K5 ROHS compliant?

    Yes, the ADS7846E/2K5 is ROHS compliant.

  4. What is the operating temperature range of the ADS7846E/2K5?

    The operating temperature range is -40°C to +85°C.

  5. Does the ADS7846E/2K5 have an internal reference voltage?

    Yes, it includes an internal 2.5V reference voltage that can be overdriven by an external source.

  6. What type of interface does the ADS7846E/2K5 use?

    The ADS7846E/2K5 uses an SPI (Serial Peripheral Interface) for communication.

  7. Is the ADS7846E/2K5 pin-compatible with other models?

    Yes, it is 100% pin-compatible with the ADS7843.

  8. What is the power dissipation of the ADS7846E/2K5 at 2.7V supply voltage?

    The power dissipation is 1.8 mW at +VCC = +2.7V.

  9. Can the ADS7846E/2K5 measure temperature?

    Yes, it can measure temperature without the need for absolute temperature calibration.

  10. What is the typical quiescent current of the ADS7846E/2K5?

    The quiescent current ranges from 280 µA to 650 µA (Internal Reference OFF) and 780 µA (Internal Reference ON).

Product Attributes

Touchscreen:4 Wire Resistive
Resolution (Bits):12 b
Interface:SPI
Voltage Reference:External, Internal
Voltage - Supply:2.2V ~ 5.25V
Current - Supply:500 µA
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:16-SSOP (0.154", 3.90mm Width)
Supplier Device Package:16-SSOP
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Similar Products

Part Number ADS7846E/2K5 ADS7846N/2K5 ADS7843E/2K5 ADS7845E/2K5
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active
Touchscreen 4 Wire Resistive 4 Wire Resistive 4 Wire Resistive 5 Wire Resistive
Resolution (Bits) 12 b 12 b 12 b 12 b
Interface SPI SPI Serial Serial
Voltage Reference External, Internal External, Internal External External
Voltage - Supply 2.2V ~ 5.25V 2.2V ~ 5.25V 2.7V ~ 5V 2.7V ~ 5.5V
Current - Supply 500 µA 500 µA 2.5 µA 280 µA
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 16-SSOP (0.154", 3.90mm Width) 16-TSSOP (0.173", 4.40mm Width) 16-SSOP (0.154", 3.90mm Width) 16-SSOP (0.154", 3.90mm Width)
Supplier Device Package 16-SSOP 16-TSSOP 16-SSOP 16-SSOP

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