MAX1234ETI+T Maxim Integrated Products, MAX1234ETI+T Datasheet - Page 8

• Manufacturer Part Number: MAX1234ETI+T
• Description: IC CNTRLR TOUCH 28-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Resistiver

Specifications of MAX1234ETI+T

• Touch Panel Interface: 4-Wire
• Number Of Inputs/keys: 1, 4 x 4 Keypad
• Resolution (bits): 8, 10, 12 b
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Data Rate/sampling Rate (sps, Bps): 50k
• Voltage Reference: Internal
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Applications: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

±15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
(AV
10MHz (50% duty cycle), f
8
DD
_______________________________________________________________________________________
= DV
DD
= 3V (MAX1233) or 5V (MAX1234), external V
-0.5
-1.0
-1.5
-2.0
-0.5
-1.0
-1.5
-2.0
-0.2
-0.4
-0.6
-0.8
-1.0
1.0
0.8
0.6
0.4
0.2
2.0
1.5
1.0
0.5
2.0
1.5
1.0
0.5
0
0
0
2.7
2.7
0
500
SAMPLE
vs. ANALOG SUPPLY VOLTAGE
ADC INTEGRAL NONLINEARITY
vs. ANALOG SUPPLY VOLTAGE
3.2
3.2
1000 1500 2000
ADC OFFSET ERROR
vs. OUTPUT CODE
ADC GAIN ERROR
= 20ksps, C
OUTPUT CODE
3.7
3.7
AV
AV
DD
DD
(V)
(V)
2500 3000
4.2
4.2
LOAD
4.7
4.7
Typical Operating Characteristics (continued)
3500
= 50pF, 0.1µF capacitor at REF, T
4000
5.2
5.2
REF
= +2.5V (MAX1233), external V
-0.2
-0.4
-0.6
-0.8
-1.0
-0.5
-1.0
-1.5
-2.0
-0.5
-1.0
-1.5
-2.0
1.0
0.8
0.6
0.4
0.2
2.0
1.5
1.0
0.5
2.0
1.5
1.0
0.5
0
0
0
-40
-40
0
ADC OFFSET ERROR vs. TEMPERATURE
ADC DIFFERENTIAL NONLINEARITY
500
-20
-20
A
1000 1500 2000
= +25°C, unless otherwise noted.)
vs. TEMPERATURE
vs. OUTPUT CODE
ADC GAIN ERROR
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
OUTPUT CODE
20
20
REF
2500 3000
= +4.096V (MAX1234), f
40
40
60
60
3500
4000
80
80
SCLK
=