MAX1234ETI+T Maxim Integrated Products, MAX1234ETI+T Datasheet - Page 9

• 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

(AV
10MHz (50% duty cycle), f
Controllers Include DAC and Keypad Controller
DD
= DV
DD
= 3V (MAX1233) or 5V (MAX1234), external V
-0.025
-0.050
-0.075
-0.100
0.075
0.050
0.025
250
200
150
100
50
_______________________________________________________________________________________
0
8
6
4
2
0
0
100
2.7
DAC INTEGRAL NONLINEARITY vs. CODE
0
MAX1233
V
ADC EXTERNAL REFERENCE INPUT
REF
SAMPLE
CURRENT vs. SAMPLING RATE
= +2.5V
50
3.2
ADC SUPPLY CURRENT
vs. SUPPLY VOLTAGE
±15kV ESD-Protected Touch-Screen
100
1k
= 20ksps, C
3.7
f
SAMPLE
AV
CODE
150
DD
(V)
EXTERNAL REF
f
(Hz)
SAMPLE
4.2
200
10k
LOAD
= 20ksps
4.7
Typical Operating Characteristics (continued)
250
= 50pF, 0.1µF capacitor at REF, T
5.2
100k
300
REF
= +2.5V (MAX1233), external V
-0.025
-0.500
-0.075
-0.100
0.075
0.050
0.025
1000
140
120
100
100
0.1
10
80
60
40
20
0
1
0
-40
0
1
DAC DIFFERENTIAL NONLINEARITY
-20
50
A
10
ADC SUPPLY CURRENT
ADC SUPPLY CURRENT
= +25°C, unless otherwise noted.)
vs. SAMPLING RATE
vs. TEMPERATURE
vs. OUTPUT CODE
100
TEMPERATURE (°C)
0
OUTPUT CODE
100
f
SAMPLE
20
150
REF
(Hz)
1k
= +4.096V (MAX1234), f
40
200
AV
DD
10k
60
250
= +3V
80
100k
300
SCLK
9
=