MAX1233-MAX1234 datasheet(4/44 Pages) MAXIM

Part #	MAX1233-MAX1234

Description	짹15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller

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Manufacturer	MAXIM [Maxim Integrated Products]

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4 / 44 page

±15kV ESD-Protected Touch-Screen

Controllers Include DAC and Keypad Controller

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(DVDD = AVDD = +2.7V to +3.6V (MAX1233), DVDD = AVDD = +4.75V to +5.25V (MAX1234), external reference VREF = 2.5V

(MAX1233), VREF = 4.096V (MAX1234); fSCLK = 10MHz, fSAMPLE = 50ksps, 12-bit mode, 0.1µF capacitor at REF, TA = -40°C to

+85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DIGITAL-TO-ANALOG CONVERTER

DC ACCURACY

Resolution

8

Bits

Integral Linearity Error

INL

(Note 7)

±1.0

LSB

Differential Linearity Error

DNL

No missing codes

±1.0

LSB

Offset Error

VOS

(Note 8)

±1

±25

mV

Offset Error Temperature

Coefficient

1

ppm/

°C

Full-Scale Error

Code = 255, no load

5

%

Full-Scale Error Temperature

Coefficient

Code = 255, no load

±10

ppm/

°C

DYNAMIC PERFORMANCE

Voltage Output Slew Rate

Positive and negative

0.4

V/µs

Output Settling Time

0.5LSB; 50k

Ω and 50pF load (Note 9)

20

µs

Glitch Impulse

Code 127 to 128

40

nV/s

Wake-Up Time

From shutdown

50

µs

DAC OUTPUT

Internal DAC Reference

VREFDAC

(Note 10)

0.85 ✕

AVDD

0.9 ✕

AVDD

0.95 ✕

AVDD

V

Code = 255; 0 to 100µA

0.5

Output Load Regulation

Code = 0; 0 to 100µA

0.5

LSB

Output Resistance

Power-down mode

1.0

M

Ω

TOUCH-SCREEN CONTROLLER

Y+, X+

7

On-Resistance

Y-, X-

9

Ω

Touch-Detection Internal Pullup

Resistance

X+ to AVDD

1M

Ω

KEYPAD CONTROLLER

Pullup Resistance

C4, C3, C2, C1 (Note 11)

0.5

k

Ω

Pulldown Resistance

R4, R3, R2, R1 (Note 11)

16

k

Ω

DIGITAL INTERFACE

DIGITAL INPUTS (SCLK,

CS, DIN, R_, C_)

Input Voltage Low

VIL

0.3 ✕

DVDD

V

Input Voltage High

VIH

0.7 ✕

DVDD

V

Input Leakage Current

IL

±0.1

±1µA

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MAX1233-MAX1234 Datasheet(PDF) 4 Page - Maxim Integrated Products

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