MAX1233EGI datasheet(10/45 Pages) MAXIM

Part #	MAX1233EGI

Description	±15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller

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Manufacturer	MAXIM [Maxim Integrated Products]

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10 / 45 page

±15kV ESD-Protected Touch-Screen

Controllers Include DAC and Keypad Controller

10

______________________________________________________________________________________

ADC REFERENCE VOLTAGE

vs. ANALOG SUPPLY VOLTAGE

MAX1233/34 toc25

AVDD (V)

2.475

2.500

2.525

2.550

2.450

0.990

1.000

1.010

1.020

0.980

5.2

4.7

4.2

3.7

3.2

2.7

VREF = 1.0V

VREF = 2.5V

ADC REFERENCE VOLTAGE

vs. TEMPERATURE

TEMPERATURE (

°C)

2.45

2.50

2.55

2.60

2.40

0.875

1.000

1.125

1.250

0.750

VREF = 2.5V

MAX1233/34 toc26

80

60

-20

0

20

40

-40

VREF = 1.0V

0.75

0.25

0

-0.25

-0.50

0.50

-0.75

2.5

4.0

3.0

3.5

4.5

5.0

5.5

DAC FULL-SCALE ERROR

vs. ANALOG SUPPLY VOLTAGE

MAX1233/34 toc21

AVDD (V)

1.2

0.4

0

-0.4

-0.8

0.8

-1.2

0.75

0.25

0

-0.25

-0.50

0.50

-0.75

-40

20

-20

0

40

60

80

DAC FULL-SCALE ERROR

vs. TEMPERATURE

MAX1233/34 toc22

TEMPERATURE (

°C)

1.2

0.4

0

-0.4

-0.8

0.8

-1.2

DAC SUPPLY CURRENT

vs. ANALOG SUPPLY VOLTAGE

AVDD (V)

50

100

150

200

250

0

5.2

4.7

4.2

3.7

3.2

2.7

TEMPERATURE (

°C)

80

60

-20

0

20

40

25

50

75

100

125

150

175

200

0

-40

DAC SUPPLY CURRENT

vs. TEMPERATURE

Typical Operating Characteristics (continued)

(AVDD = DVDD = 3V (MAX1233) or 5V (MAX1234), external VREF = +2.5V (MAX1233), external VREF = +4.096V (MAX1234), fSCLK =

10MHz (50% duty cycle), fSAMPLE = 20ksps, CLOAD = 50pF, 0.1µF capacitor at REF, TA = +25°C, unless otherwise noted.)

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