ADS7843E

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ADS7843E

ADS7843 12-BIT ANALOG-TO-DIGITAL

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Spécifications

Package Bulk
ProductStatus Active
Touchscreen 3 Wire Capacitive
Resolution(Bits) 12 b
Interface Serial
VoltageReference External
Voltage-Supply 2.7V ~ 5V
Current-Supply 280 µA
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 16-SSOP (0.154, 3.90mm Width)

Vue d'ensemble

Description

The ADS7843E is a 4-channel, 12-bit analog-to-digital converter (ADC) designed for use in touchscreen applications and other analog signal processing tasks. It operates with a supply voltage range of 2.7V to 5.5V and features a maximum sampling rate of 125 kSPS. The device supports a variety of communication interfaces, including SPI, enabling easy integration with microcontrollers.
Key features include low power consumption, internal reference voltage, and programmable gain settings, which enhance its versatility in different applications. The ADS7843E can operate in single-ended or differential mode, making it suitable for various sensor configurations. Its built-in noise filtering and high accuracy make it ideal for applications in industrial, automotive, and consumer electronics sectors.
Overall, the ADS7843E offers a compact and efficient solution for digitizing analog signals, particularly in environments where precision and reliability are crucial.

Features

The ADS7843E is a 4-wire resistive touchscreen controller designed for interfacing with microcontrollers. Key features include:
1. Resolution: 12-bit ADC resolution for accurate touch detection.
2. Sampling Rate: Fast conversion rates, up to 125 kHz.
3. Interface: Serial communication via SPI, allowing quick data transfer.
4. Touch Detection: Supports multiple touch points with built-in gesture recognition.
5. Power Consumption: Low power operation, suitable for battery-powered devices.
6. Operating Voltage: Wide supply voltage range from 2.7V to 5.5V.
7. Noise Immunity: Integrated noise-filtering capabilities to enhance signal integrity.
8. Programmable Settings: Configurable parameters for customization in various applications.
9. Built-in Temperature Compensation: Enhances performance across varying temperatures.
10. Small Package Size: Available in compact packages for space-constrained designs.
These features make the ADS7843E ideal for portable touch applications in smartphones, tablets, and other consumer electronics.

Package

The ADS7843E is available in a 16-pin TQFP (Thin Quad Flat Package) and a 16-pin SOIC (Small Outline Integrated Circuit) package type.

Pinout

The ADS7843E is a 4-wire resistive touchscreen controller with a total of 16 pins. Its pin functions are as follows:
1. VDD - Supply voltage.
2. GND - Ground reference.
3. CS - Chip select for SPI communication.
4. DIN - Data input for SPI interface.
5. DOUT - Data output for SPI interface.
6. SCLK - Serial clock for SPI communication.
7. IRQ - Interrupt request output.
8. PENIRQ - Pen interrupt (detects touch).
9. REF - Reference voltage input.
10. T1, T2, T3, T4 - Touch sense pins for detecting X and Y coordinates.
11. VDDA - Analog supply voltage input.
12. VREF - External reference voltage.
13. VSS - Digital ground reference.
14. DRDY - Data ready indicator.
15. TSI - Touch screen interface.
16. GPIO - General-purpose input/output pin.
The ADS7843E is primarily used for converting the analog signals from the touchscreen into digital data for processing.

Manufacturer

The ADS7843E is manufactured by Texas Instruments (TI), a leading American technology company. Established in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various advanced technology solutions. The company is particularly known for its analog and mixed-signal electronics, microcontrollers, and digital signal processors. TI serves a diverse range of industries, including automotive, industrial, communications, and consumer electronics, providing products that enable efficiency and innovation in electronic systems. With a strong emphasis on research and development, Texas Instruments remains a key player in the semiconductor industry, continually advancing technologies to meet the demands of modern applications.

Application

The ADS7843E is a 4-wire touchscreen controller primarily used in applications such as handheld devices, industrial automation, consumer electronics, and automotive displays. It enables touch input in smartphones, tablets, and kiosks, enhancing user interaction. Additionally, it supports medical devices and point-of-sale systems, providing a robust solution for touch sensing in various environments.

Equivalent

Equivalent products to the ADS7843E include the MCP3008, AD7887, and MAX11612. These alternatives also provide analog-to-digital conversion capabilities, typically with 12-bit resolution and multiple channels. Ensure to check specific features such as communication interface, voltage range, and sampling rates for compatibility with your application.

Expédition

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Référence des frais d'expédition (DHL/FedEx):

DHL: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 2 à 5 jours ouvrables.

FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.

Courrier aérien enregistré: Le coût d'expédition est de 2 à 4 $ (0,1 kg), avec un délai de livraison estimé de 5 à 20 jours ouvrables.

Paiements

Payment Methods

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3. Transfert bancaire

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