EVAL-AD7877EBZ Analog Devices Inc, EVAL-AD7877EBZ Datasheet - Page 10

• Manufacturer Part Number: EVAL-AD7877EBZ
• Description: BOARD EVALUATION FOR AD7877
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD7877EBZ

• Main Purpose: Interface, Touch Screen Controller
• Embedded: No
• Utilized Ic / Part: AD7877
• Primary Attributes: 4-Wire Resistive Touch Screen Controller, SPI Interface, On-Chip: Temp Sensor, Voltage Reference, 8-Bit DAC
• Secondary Attributes: USB GUI, LCD Noise Reduction Feature, 2.7 ~ 5.25 V, Wake Up on Touch Feature
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7877
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
22
20
18
16
14
12
10
22
20
18
16
14
12
10
0
8
8
–40
2.7
0
Figure 14. Switch On Resistance vs. Temperature
500
Figure 13. Switch On Resistance vs. V
(X+, Y+: V
(X+, Y+: V
3.1
–20
X+ TO V
1000
X+ TO V
Figure 12. ADC DNL Plot
3.5
CC
CC
CC
0
to Pin; X−, Y−: Pin to GND)
to Pin; X−, Y−: Pin to GND)
1500
TEMPERATURE (°C)
Y+ TO V
CC
Y+ TO V
3.9
V
2000
CODE
CC
20
CC
CC
(V)
4.3
X– TO GND
2500
Y– TO GND
Y– TO GND
X– TO GND
40
4.7
3000
CC
60
3500
5.1
4000
80
5.5
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2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
2.475
2.508
2.506
2.504
2.502
2.500
2.498
2.496
16
14
12
10
8
6
4
2
0
–50
–50
Figure 15. External Reference Current vs. Temperature
2.6
2.9
Figure 16. Internal V
–30
–30
Figure 17. Internal V
3.2
–10
–10
3.5
TEMPERATURE (°C)
TEMPERATURE (°C)
10
10
V
REF
3.8
CC
vs. Temperature
(V)
REF
30
30
4.1
vs. V
CC
50
4.4
50
4.7
70
70
5.0
90
90