MAX11803EWC+T datasheet(12/56 Pages) MAXIM

Part #	MAX11803EWC+T

Description	Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I2C/SPI Interface

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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12 / 56 page

Low-Power, Ultra-Small Resistive Touch-Screen

Controllers with I2C/SPI Interface

12

______________________________________________________________________________________

AVERAGE SUPPLY CURRENT

vs. SAMPLING RATE

SAMPLING RATE (cps)

180

160

120 140

40 60 80 100

20

10

20

30

40

50

60

70

80

90

0

200

AUTONOMOUS MODE

cps = COORDINATES

PER SECOND

DATA TAKEN WITH

RESISTIVE TOUCH

SENSOR

AVERAGE SUPPLY CURRENT

vs. SAMPLING RATE

SAMPLING RATE (cps)

180

160

140

120

100

80

60

40

20

1

2

3

4

5

0

200

DIRECT CONTINUOUS

INTERRUPT MODE

cps = COORDINATES PER SECOND

AVERAGE SUPPLY CURRENT

vs. SAMPLING RATE

SAMPLING RATE (cps)

180

160

140

120

100

80

60

40

20

1

2

3

4

5

0

200

DIRECT EDGE

INTERRUPT MODE

cps = COORDINATES PER SECOND

SUPPLY CURRENT IN POWER-DOWN

vs. TEMPERATURE

TEMPERATURE (NC)

60

35

10

-15

0.04

0.08

0.12

0.16

0.20

0.24

0.28

0.32

0.36

0.40

0

-40

85

SWITCH RESISTANCE

vs. SUPPLY VOLTAGE

VDD (V)

3.2

2.8

2.4

2.0

4

5

6

Y+

7

8

3

1.6

3.6

X+

Y-

X-

SWITCH RESISTANCE

vs. TEMPERATURE

TEMPERATURE (NC)

60

35

10

-15

2

3

4

5

6

7

1

-40

85

X-

X+

Y-

Y+

CHANGE IN ADC GAIN

vs. TEMPERATURE

TEMPERATURE (NC)

80

50

-10

20

-3

-2

-1

0

2

1

3

4

-4

-40

110

CHANGE IN ADC OFFSET

vs. TEMPERATURE

TEMPERATURE (NC)

80

50

-10

20

-3

-2

-1

0

2

1

3

4

-4

-40

110

Typical Operating Characteristics

(VDD = 1.8V at TA = -40°C to +85°C (TA = -40°C, TA = 0°C, TA = +25°C, and TA = +85°C), 12-bit mode, all measurements using

noncontinuous AUX input. SPI = 10MHz and I2C = 400kHz, unless otherwise noted. Resistive touch-screen panel (X+ to X- = 608

Ω,

Y+ to Y- = 371

Ω).)

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MAX11803EWC+T Datasheet(PDF) 12 Page - Maxim Integrated Products

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