One stop electronic component supply MXB7843EEE 2.375V to 5.25V 4-Wire Touchscreen Controller Resistive 12b SPI Interface

Manufacturer

ADI

Manufacturer Product Number

MXB7843EEE

Description

IC SCREEN CNTRL 12BIT 16QSOP

Package Condition

T/R

Datasheet

MXB7843EEE

Product Details
Reviews

Product Descriptions

The MXB7843 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 MXB7843 uses an external reference. The MXB7843 can make absolute or ratiometric measurements. The MXB7843 has two auxiliary ADC inputs. All analog inputs are fully ESD protected, eliminating the need for external TransZorb™ devices.

The MXB7843 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 MXB7843 ideal for battery-operated systems, such as personal digital assistants with resistive touch screens and other portable equipment. The MXB7843 is available in 16-pin QSOP and TSSOP packages, and is guaranteed over the -40°C to +85°C temperature range.

Product Features

♦ ESD-Protected ADC Inputs

±15kV 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

♦ SPI™/QSPI™, 3-Wire Serial Interface

♦ Programmable 8-/12-Bit Resolution

♦ Two Auxiliary Analog Inputs

♦ Automatic Shutdown Between Conversions

♦ Low Power

270µA at 125ksps

115µA at 50ksps

25µA at 10ksps

5µA at 1ksps

2µA Shutdown Current

Product Applications

Personal Digital Assistants

Portable Instruments

Point-of-Sales Terminals

Pagers

Touch-Screen Monitors

Cellular Phones

Specifications

Attribute	Attribute value
ANSM-Part#	ANSM-MXB7843EEE
Category	Integrated Circuits (ICs)
	Data Acquisition
	Touch Screen Controllers
Mfr	Analog Devices Inc./Maxim Integrated
Series	-
Package	Tube
Product Status	Obsolete
Touchscreen	4 Wire Resistive
Resolution (Bits)	12 b
Interface	SPI
Voltage Reference	External
Voltage - Supply	2.38V ~ 5.25V
Current - Supply	650 µA
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	16-SSOP (0.154", 3.90mm Width)
Supplier Device Package	16-QSOP
Base Product Number	MXB7843