MAX11800 Datasheet, PDF (8/56 Pages) Maxim Integrated Products – Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I2C/SPI Interface

Low-Power, Ultra-Small Resistive Touch-Screen
Controllers with I²C/SPI Interface
ABSOLUTE MAXIMUM RATINGS
V_DD to GND ...........................................................-0.3V to +4.0V
X+, X-, Y+, Y-, AUX, TIRQ to GND ........................-0.3V to +4.0V
SCL, CLK, SDA, DIN, A0, CS, A1, DOUT to GND.-0.3V to +4.0V
Maximum Current into Any Pin .........................................±50mA
Continuous Power Dissipation (T_A = +70°C)
12-Pin TQFN (derate 24.4mW/°C above +70°C) ....1951.2mW
12-Pin WLP (derate 6.5mW/°C above +70°C) ..........518.8mW
Operating Temperature Ranges
MAX1180_E_ _..................................................-40°C to +85°C
MAX1180_G_ _ ...............................................-40°C to +105°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+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
(V_DD = 1.7V to 3.6V, T_A = -40°C to +85°C (MAX11800E–MAX11803E), T_A = -40°C to +105°C (MAX11800G/MAX11801G), unless oth-
erwise noted. Typical values are at T_A = +25°C and V_DD = 3.3V, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
ADC
ADC Resolution
No missing codes
10
11
Bits
Differential Nonlinearity
DNL 12-bit resolution
±1.5
LSB
Integral Nonlinearity
INL 12-bit resolution
±1.5
LSB
Offset Error
±2
LSB
Gain Error
±4
LSB
Throughput
105
ksps
TOUCH SENSORS (X+, X-, Y+, Y-, AUX)
Switch On-Resistance
Switch Driver Current
V_DD = 1.7V
V_DD = 3.3V
7
12
Ω
5
10
50
mA
Input Voltage Range
POWER SUPPLY (V_DD)
Supply Voltage
V_DD
0
V_DD
V
1.7
3.6
V
Power-down mode. All digital ^1.7V
1
inputs static.
3.6V
2
Supply Current
Power Consumption
TDM. All digital inputs static.
Does not include panel currents 3.6V
when touched.
Timed LPM. All digital inputs
static. Does not include panel
currents when touched.
AUX conversions at 34.4ksps
equivalent rate, SPI
AUX conversions at 34.4ksps
equivalent rate, I²C
AUX conversions at 34.4ksps
equivalent rate, SPI
AUX conversions at 34.4ksps
equivalent rate, I²C
1.7V
3.3V
1.7V
3.3V
1.7V
3.3V
1.7V
3.3V
1.7V
3.3V
7
9
20
μA
16
40
216 400
273 550
202 400
269 550
367
901
μW
343
888
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