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MAX1234ETI Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX1234ETI Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 44 page ±15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (DVDD = AVDD = +2.7V to +3.6V (MAX1233), DVDD = AVDD = +4.75V to +5.25V (MAX1234), external reference VREF = 2.5V (MAX1233), VREF = 4.096V (MAX1234); fSCLK = 10MHz, fSAMPLE = 50ksps, 12-bit mode, 0.1µF capacitor at REF, TA = -40 °C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. AVDD to GND............................................................-0.3V to +6V DVDD to AVDD .......................................................-0.3V to +0.3V Digital Inputs/Outputs to GND .................-0.3V to (DVDD + 0.3V) X+, Y+, X-, Y-, AUX1, AUX2, and REF to GND ..................................-0.3V to (AVDD + 0.3V) BAT1, BAT2 to GND .................................................-0.3V to +6V Maximum ESD per IEC 1000-4-2 (per MIL STD-883 HBM) X+, X-, Y+, Y-, AUX1, AUX2, BAT1, BAT2...................... ±15kV All Other Pins..................................................................... ±2.5kV Maximum Current into Any Pin............................................50mA Continuous Power Dissipation (TA = +70 °C) 28-Pin QFN (derate 28.5mW/ °C above +70°C) .................2W 28-Pin TQFN (derate 28.5mW/ °C above +70°C) ...............2W Operating Temperature Range ...........................-40 °C to +85°C Storage Temperature Range .............................-60 °C to +150°C Lead Temperature (soldering, 10s) .................................+300 °C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ANALOG-TO-DIGITAL CONVERTER DC ACCURACY (Note 1) Resolution Software-programmable 8/10/12 bit 12 Bits No Missing Codes 11 Bits 12-bit mode ±0.8 ±2 Relative Accuracy (Note 2) INL 10-bit and 8-bit modes ±0.5 LSB 12-bit mode ±0.8 ±2 Differential Nonlinearity DNL 10-bit and 8-bit modes ±0.5 LSB 12-bit mode ±0.5 ±4 Offset Error 10-bit and 8-bit modes ±0.5 LSB 12-bit mode ±0.5 ±4 10-bit mode ±0.5 Gain Error (Note 3) 8-bit mode ±0.5 LSB 12-bit mode ±2 Total Unadjusted Error TUE 10-bit and 8-bit modes ±1 LSB Offset Temperature Coefficient ±0.4 ppm/ °C Gain Temperature Coefficient ±0.4 ppm/ °C Channel-to-Channel Offset ±0.1 LSB Channel-to-Channel Gain Matching ±0.1 LSB Noise Including internal VREF 50 µVRMS MAX1233 AVDD = DVDD = +2.7V to +3.6V ±0.4 Power-Supply Rejection PSR Full-scale input MAX1234 AVDD = DVDD = +5V ±5% ±0.3 mV DYNAMIC SPECIFICATIONS (1kHz SINE WAVE, VIN = 2.5VP-P FOR MAX1233, VIN = 4.096VP-P FOR MAX1234, 50ksps, fSCLK = 10MHz) Signal-to-Noise Plus Distortion SINAD 69 dB |
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