Maxim MXB7843EUE+T

4 线电阻式12 bSPI2.38V ~ 5.25V-40°C ~ 85°C

Overview

The MXB7843EUE is an industry-standard 4-wire touchscreen controller. It contains a 12-bit sampling analogto-digital converter (ADC) with a synchronous serial interface and low on-resistance switches for driving resistive touch screens. The MXB7843EUE uses an external reference. The MXB7843EUE can make absolute or ratiometric measurements. The MXB7843EUE has two auxiliary ADC inputs. All analog inputs are fully ESD protected, eliminating the need for external TransZorb™ devices. The MXB7843EUE is guaranteed to operate with a single 2.375V to 5.25V supply voltage. In shutdown mode, the typical power consumption is reduced to under 0.5µW, while the typical power consumption at 125ksps throughput and a 2.7V supply is 650µW. Low-power operation makes the MXB7843EUE ideal for battery-operated systems, such as personal digital assistants with resistive touch screens and other portable equipment. The MXB7843EUE is available in 16-pin QSOP and TSSOP packages, and is guaranteed over the -40°C to +85°C temperature range. 

◆ ESD-Protected ADC Inputs   ±15kKV IEC 61000-4-2 Air-Gap Discharge   ±8kV IEC 61000-4-2 Contact Discharge Pin Compatible with MXB7846   +2.375V to +5.25V Single Supply   4-Wire Touch-Screen Interface Ratiometric Conversion · SPITM/QSPITM,3-Wire Serial Interface Programmable 8-/12-Bit Resolution Two Auxiliary Analog Inputs Automatic Shutdown Between Conversions Low Power   270uA at 125ksps   115uA at 50ksps   25uA at 10ksps   5uA at 1ksps   2uA Shutdown Current

Features

Tape & Reel (TR) Package

Surface Mount Mounting Type

Applications

There are a lot of Maxim Integrated
MXB7843EUE+T Touch Screen Controllers applications.

• Medical Instrumentation and medical imaging
• Music recording
• Digital signal processing
• Scientific instruments
• Rotary encoder
• Displaying
• Transducer
• Microcontrollers.
• Digital Storage Oscilloscope
• Scientific instruments.