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ADS7846E/2K5

Name: ADS7846E/2K5
Rating: 4.7 (12 reviews)

IC SCREEN CNTRL 12BIT 16SSOP

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Mfr。パート #ADS7846E/2K5
パッケージ SSOP-16
データシート
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仕様

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
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
Package/Case	16-SSOP (0.154, 3.90mm Width)

概要

Description

The ADS7846E/2K5 is a high-performance, 4-wire resistive touch screen controller from Texas Instruments. It features a 12-bit resolution and operates at a maximum sampling rate of 125 kHz, ensuring accurate touch detection and responsiveness. The device is designed to interface with microcontrollers via an SPI or I²C communication protocol, making it versatile for various applications.
Key features include programmable sample rates, low-power operation, and built-in support for multiple touch screen configurations. The ADS7846E/2K5 supports a wide input voltage range, making it suitable for battery-powered devices. It also includes features like internal voltage reference and calibration options to enhance touch accuracy.
Applications of the ADS7846E/2K5 span consumer electronics, industrial control systems, and automotive interfaces, where touch screen interaction is required. Its compact design and robustness make it an ideal choice for embedded systems integrating touch functionality.

Features

The ADS7846E/2K5 is a high-performance, low-power 4-wire resistive touchscreen controller from Texas Instruments. Key features include:
1. High Resolution: 12-bit resolution for accurate touch position measurement.
2. Multi-Touch Support: Capable of processing multiple touch points, enhancing user interaction.
3. Low Power Consumption: Optimized for portable devices, enabling extended battery life.
4. Fast Data Transfer: Supports a maximum SPI clock frequency of 1.5 MHz, allowing rapid data communication.
5. Integrated Features: Built-in digital filtering and averaging for noise reduction in touch inputs.
6. Flexible Interface: SPI interface for easy connectivity with microcontrollers.
7. Single Supply Voltage: Operates on a power supply range of 2.7V to 5.5V.
8. Temperature Range: Wide operating temperature range suitable for various applications.
These features make the ADS7846E/2K5 ideal for applications in handheld devices, industrial equipment, and consumer electronics.

Package

The ADS7846E/2K5 is available in a 64-pin QFN (Quad Flat No-lead) package, which offers a compact footprint and improved thermal performance.

Pinout

The ADS7846E/2K5 is a 4-wire touchscreen controller with a 16-pin count in a TQFP package. Its primary function is to convert analog signals from a touchscreen into digital data for processing by a microcontroller.
Key pin functions include:
1. VREF: Reference voltage input.
2. AVDD: Analog supply voltage.
3. DVDD: Digital supply voltage.
4. GND: Ground connection.
5. CS: Chip select (active low).
6. DIN: Data input.
7. DOUT: Data output.
8. SCLK: Serial clock for data communication.
9. IRQ: Interrupt request output.
10. T_CLK: Timing clock for the touchscreen.
11. T_DIN: Touchscreen data input.
12. T_DOUT: Touchscreen data output.
13. T_CS: Touchscreen chip select.
14. T_IRQ: Touchscreen interrupt.
15. GPIO: General-purpose input/output pins (configurable).
16. REF: Internal reference voltage output.
These pins facilitate the operation of the touchscreen, enabling precise detection of touch coordinates.

Manufacturer

The ADS7846E/2K5 is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company headquartered in Dallas, Texas. It specializes in designing and manufacturing a wide range of analog, embedded processing, and digital signal processing (DSP) products. TI serves various industries, including automotive, industrial, communications, and consumer electronics, providing solutions that enable the development of advanced electronic systems. The company is well-known for its innovation in analog technology and has a strong focus on research and development to meet the evolving needs of customers.

Application

The ADS7846E/2K5 is a high-resolution, low-power analog-to-digital converter (ADC) used in applications such as industrial control systems, medical devices, portable instrumentation, and consumer electronics. It is particularly suited for touchscreen interfaces, sensor data acquisition, and any application requiring precise analog signal processing with a low power consumption profile.

Equivalent

Equivalent products to the ADS7846E/2K5 chip include the ADS7843, ADS7845, and ADS7848 from Texas Instruments. Additionally, similar analog-to-digital converters (ADCs) from other manufacturers may include the MCP3204 from Microchip and the LTC1865 from Analog Devices. Always check the specific datasheet for compatibility in terms of specifications and pin configurations.