Maxim Integrated MAX1233
The MAX1233/MAX1234 are complete PDA controllers in 5mm × 5mm, 28-pin QFN and TQFN packages. They feature a 12-bit analog-to-digital converter (ADC), low onresistance 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).| Part No. | MAX1233 |
|---|---|
| Datasheet | MAX1233 Download |
| Manufacturer |  Maxim Integrated |
| Description | ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller |
| Buy | Stock & Price |
GENERAL DESCRIPTION
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. Softwareconfigurable 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.APPLICATIONS
Personal Digital Assistants Pagers Touch-Screen Monitors Cellular Phones MP3 Players Portable Instruments Point-of-Sale Terminals Pin ConfigurationFEATURES
♦ 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)...
