QuickView

Technical Documents

Ordering Info

More Information

All

Data Sheet

FULL DATA SHEET (PDF, 384kB) Download   E-Mail

Description

The MAX1233/MAX1234 are complete PDA controllers in 5mm x 5mm, 28-pin QFN and TQFN packages. They feature a 12-bit analog-to-digital converter (ADC), low on-resistance switches for driving resistive touch screens, an internal +1.0V/+2.5V or external reference, ±2°C accurate, on-chip temperature sensor, direct +6V battery monitor, keypad controller, 8-bit digital-to-analog converter (DAC), and a synchronous serial interface. Each of the keypad controllers' eight row and column inputs can be reconfigured as general-purpose parallel I/O pins (GPIO). All analog inputs are fully ESD protected, eliminating the need for external TransZorb™ devices. The MAX1233/MAX1234 offer programmable resolution and sampling rates. Interrupts from the devices alert the host processor when data is ready, when the screen is touched, or a key press is detected. Software-configurable scan control and internal timers give the user flexibility without burdening the host processor. These devices consume only 260µA at the maximum sampling rate of 50ksps. Supply current falls to below 50µA for sampling rates of 10ksps. The MAX1233/MAX1234 are guaranteed over the -40°C to +85°C temperature range.

Key Features		Applications/Uses
ESD-Protected Analog Inputs ±15kV IEC 1000-4-2 Air-Gap Discharge ±8kV IEC 1000-4-2 Contact Discharge Single-Supply Operation +2.7V to +3.6V (MAX1233) +4.75V to +5.25V (MAX1234) 4-Wire Touch-Screen Interface Internal +1.0V/+2.5V Reference or External Reference (+1.0V to AVDD) SPI™/QSPI™/MICROWIRE™-Compatible 10MHz Serial Interface 12-Bit, 50ksps ADC Measures Resistive Touch-Screen Position and Pressure Two Auxiliary Analog Inputs Two Battery Voltages (0.5V to 6V) On-Chip Temperature 8-Bit DAC for LCD Bias Control 4 x 4 Keypad Programmable Controller Offers Up to Eight GPIO Pins Automatic Detection of Screen Touch, Key Press, and End of Conversion Programmable 8-, 10-, 12-Bit Resolution Programmable Conversion Rates AutoShutdown™ Between Conversions Low Power 260µA at 50ksps 50µA at 10ksps 6µA at 1ksps 0.3µA Shutdown Current 28-Pin 5mm x 5mm QFN and TQFN Packages		Cellular Phones MP3 Players Pagers Personal Digital Assistants Point-of-Sale Terminals Portable Instruments Touch-Screen Monitors

Application Notes

Application Note 4125: Getting Started with the MAX1233/MAX1234 Touch-Screen Controllers - MAX1233, MAX1234

Evaluation Kits

MAX1234EVC16, MAX1234EVKIT

Design Guides

D/A CONVERTERS (PDF)

Reliability Reports

Show FIT data for: MAX1233 MAX1234 Request Reliability Report for: MAX1233 MAX1234

Software/Models

none

Ordering Information
Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices: 1-8 of 8
MAX1233	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1233EGI			QFN;28 pin; Dwg: 21-0091J (PDF) Use pkgcode/variation: G2855-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1233EGI-T			QFN;28 pin; Dwg: 21-0091J (PDF) Use pkgcode/variation: G2855-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1233ETI+			THIN QFN;28 pin; Dwg: 21-0140L (PDF) Use pkgcode/variation: T2855+6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1233ETI+T			THIN QFN;28 pin; Dwg: 21-0140L (PDF) Use pkgcode/variation: T2855+6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1234	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1234EGI			QFN;28 pin; Dwg: 21-0091J (PDF) Use pkgcode/variation: G2855-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1234EGI-T				-40°C to +85°C	See data sheet
MAX1234ETI+			THIN QFN;28 pin; Dwg: 21-0140L (PDF) Use pkgcode/variation: T2855+6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1234ETI+T				-40°C to +85°C	See data sheet

More Information

New Product Press Release 2002-08-30

Related Products

MXB7843 2.375V to 5.25V, 4-Wire Touch-Screen Controller MXB7846 2.375V to 5.25V, 4-Wire Touch-Screen Controller with Internal Reference and Temperature Sensor

Didn't Find What You Need?

Next Day Product Selection Assistance from Applications Engineers Parametric Search Applications Help

QuickView

Technical Documents

Ordering Info

More Information

Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

Price and Availability   Samples   Buy Online   Package Information   Lead-Free Information

Related Products   Notes and Comments   Evaluation Kits