MAX1234ETI+T Maxim Integrated Products, MAX1234ETI+T Datasheet - Page 6

• 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
ELECTRICAL CHARACTERISTICS (continued)
(DV
(MAX1233), V
+85°C, unless otherwise noted. Typical values are at T
Note 8: The offset value extrapolated from the range over which the INL is guaranteed.
Note 9: Output settling time is measured by stepping from code 5 to 255, and from code 255 to 5.
Note 10: Actual output voltage at full scale is 255/256 × V
Note 11: Resistance is open when configured as GPIO or in shutdown.
Note 12: AV
Note 13: When configured as GPIO.
6
R_/C_
DOUT
SCLK
DIN
DD
CS
_______________________________________________________________________________________
NOTE: TIMING NOT TO SCALE.
= AV
DD
DD
REF
and DV
= +2.7V to +3.6V (MAX1233), DV
= 4.096V (MAX1234); f
t
t
CSS
DS
DD
should not differ by more than 300mV.
t
DV
t
DH
t
CL
SCLK
t
CH
= 10MHz, f
DD
A
= AV
= +25°C.)
REFDAC
SAMPLE
DD
= +4.75V to +5.25V (MAX1234), external reference V
.
= 50ksps, 12-bit mode, 0.1µF capacitor at REF, T
t
CP
t
DOV
t
GPO
Timing Diagram
t
CSH
t
CSW
A
t
t
t
CSH
CSS
DOD
REF
= -40°C to
= 2.5V