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ADS7843E

ADS7843E

4-wire Touch Screen Controller

0 Phản hồi ROHS

Nhà sản xuất: Texas Instruments

Còn : 48 Cái

Số lượng mua

2145 lượt xem

Bảng giá

Số lượng
(Cái)
Giá(VND)
1
49,000
10
47,000
20
45,000

Description

 

The ADS7843 is a 12-bit sampling Analog-to-Digital Converter (ADC) with a synchronous serial interface and low on-resistance switches for driving touch screens. Typical power dissipation is 750uW at a 125kHz throughput rate and a +2.7V supply. The reference voltage (VREF) can be varied between 1V and +VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces typical power dissipation to under 0.5uW. The ADS7843 is specified down to 2.7V operation.

Low power, high speed, and onboard switches make the ADS7843 ideal for battery-operated systems such as personal digital assistants with resistive touch screens and other portable equipment. The ADS7843 is available in an SSOP-16 package and is specified over the –40°C to +85°C temperature range.

Features

 

  • 4-WIRE TOUCH SCREEN INTERFACE
  • RATIOMETRIC CONVERSION
  • SINGLE SUPPLY: 2.7V to 5V
  • UP TO 125kHz CONVERSION RATE
  • SERIAL INTERFACE
  • PROGRAMMABLE 8-OR 12-BIT RESOLUTION
  • 2 AUXILIARY ANALOG INPUTS
  • FULL POWER-DOWN CONTROL
  • APPLICATIONS
    • PERSONAL DIGITAL ASSISTANTS
    • PORTABLE INSTRUMENTS
    • POINT-OF-SALES TERMINALS
    • PAGERS
    • TOUCH SCREEN MONITORS

    Parametrics

     

    ADS7843

    Touch Panel

    4-Wire

    SAR ADC Resolution (Bits)

    12

    SAR Sample Rate (Max) (kSPS)

    125

    Interface

    Serial

    Vref (Int/Ext)

    Int

    Supply Voltage (Analog) (Min)

    2.7

    Supply Voltage (Analog) (Max)

    5.25

    Control Interface

    SPI

    Pin/Package

    16SSOP/QSOP

Download datasheet

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