MAX1233_05 Datasheet, PDF (2/45 Pages) Maxim Integrated Products – ±15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller

±15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
ABSOLUTE MAXIMUM RATINGS
AV_DD to GND............................................................-0.3V to +6V
DV_DD to AV_DD .......................................................-0.3V to +0.3V
Digital Inputs/Outputs to GND .................-0.3V to (DV_DD + 0.3V)
X+, Y+, X-, Y-, AUX1, AUX2,
and REF to GND ..................................-0.3V to (AV_DD + 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 (T_A = +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
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.
ELECTRICAL CHARACTERISTICS
(DV_DD = AV_DD = +2.7V to +3.6V (MAX1233), DV_DD = AV_DD = +4.75V to +5.25V (MAX1234), external reference V_REF = 2.5V
(MAX1233), V_REF = 4.096V (MAX1234); f_SCLK = 10MHz, f_SAMPLE = 50ksps, 12-bit mode, 0.1µF capacitor at REF, T_A = -40°C to
+85°C, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DC ACCURACY (Note 1)
Resolution
ANALOG-TO-DIGITAL CONVERTER
Software-programmable 8/10/12 bit
12
Bits
No Missing Codes
Relative Accuracy (Note 2)
Differential Nonlinearity
Offset Error
Gain Error (Note 3)
Total Unadjusted Error
Offset Temperature Coefficient
Gain Temperature Coefficient
Channel-to-Channel Offset
INL
DNL
TUE
12-bit mode
10-bit and 8-bit modes
12-bit mode
10-bit and 8-bit modes
12-bit mode
10-bit and 8-bit modes
12-bit mode
10-bit mode
8-bit mode
12-bit mode
10-bit and 8-bit modes
11
Bits
±0.8
±2
LSB
±0.5
±0.8
±2
LSB
±0.5
±0.5
±4
LSB
±0.5
±0.5
±4
±0.5
LSB
±0.5
±2
LSB
±1
±0.4
ppm/°C
±0.4
ppm/°C
±0.1
LSB
Channel-to-Channel Gain
Matching
±0.1
LSB
Noise
Power-Supply Rejection
Including internal V_REF
50
MAX1233
±0.4
PSR
Full-scale ^{AVDD = DVDD = +2.7V to +3.6V}
input
MAX1234
AV_DD = DV_DD = +5V ±5%
±0.3
µV_RMS
mV
DYNAMIC SPECIFICATIONS (1kHz SINE WAVE, V_IN = 2.5V_P-P FOR MAX1233, V_IN = 4.096V_P-P FOR MAX1234, 50ksps,
f_SCLK = 10MHz)
Signal-to-Noise Plus Distortion
SINAD
69
dB
2 _______________________________________________________________________________________