DatasheetsPDF.com

ADS7843-Q1 Dataheets PDF



Part Number ADS7843-Q1
Manufacturers Texas Instruments
Logo Texas Instruments
Description TOUCH SCREEN CONTROLLER
Datasheet ADS7843-Q1 DatasheetADS7843-Q1 Datasheet (PDF)

ADS7843-Q1 www.ti.com SBAS504A – MARCH 2011 – REVISED JULY 2012 TOUCH SCREEN CONTROLLER Check for Samples: ADS7843-Q1 FEATURES 1 • Qualified for Automotive Applications • 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 DESCR.

  ADS7843-Q1   ADS7843-Q1



Document
ADS7843-Q1 www.ti.com SBAS504A – MARCH 2011 – REVISED JULY 2012 TOUCH SCREEN CONTROLLER Check for Samples: ADS7843-Q1 FEATURES 1 • Qualified for Automotive Applications • 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 DESCRIPTION The ADS7843-Q1 is a 12-bit sampling Analog-toDigital Converter (ADC) with a synchronous serial interface and low on-resistance switches for driving touch screens. Typical power dissipation is 750µW 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 0.5µW. The ADS7843-Q1 is specified down to 2.7V operation. Low power, high speed, and onboard switches make the ADS7843-Q1 ideal for battery-operated systems such as personal digital assistants with resistive touch screens and other portable equipment. The ADS7843-Q1 is available in an SSOP-16 package and is specified over the –40°C to +85°C temperature range. TA –40°C to 85°C ORDERING INFORMATION(1) PACKAGE (2) ORDERABLE PART NUMBER SSOP-16 – DBQ Tape and reel ADS7843IDBQRQ1 TOP-SIDE MARKING S7843Q (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. (2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2011–2012, Texas Instruments Incorporated ADS7843-Q1 SBAS504A – MARCH 2011 – REVISED JULY 2012 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. PIN DESCRIPTIONS (continued) SSOP PACKAGE (TOP VIEW) PIN DESCRIPTIONS PIN DESCRIPTION NO. NAME 1 +VCC Power Supply, 2.7V to 5V. 2 X+ X+ Position Input. ADC input Channel 1. 3 Y+ Y+ Position Input. A.


ADS7830 ADS7843-Q1 ADS7841-Q1


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)