AD7879 Analog Devices, AD7879 Datasheet - Page 10

• Manufacturer Part Number: AD7879
• Description: Low Voltage Controller for Touch Screens
• Manufacturer: Analog Devices

Specifications of AD7879

• Resolution (bits): 12bit
• # Chan: 6
• Sample Rate: 105kSPS
• Interface: I²C/Ser 2-Wire,Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni Vdd
• Adc Architecture: SAR
• Pkg Type: CSP,WLCSP

AD7879/AD7889
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
7
6
5
4
3
2
1
0
0
1
1.6
1.8
501
Figure 16. Switch On Resistance vs. V
(X+, Y+: Pin to V
2.0
1001
2.2
Figure 15. ADC DNL
1501
2.4
CC
V
; X−, Y−: Pin to GND)
CC
2001
CODE
2.6
(V)
2.8
2501
3.0
3001
X+ TO V
Y+ TO V
X– TO GND
Y– TO GND
3.2
CC
3501
3.4
CC
CC
3.6
4001
Rev. C | Page 10 of 40
2370
2369
2368
2367
2366
2365
2364
2363
2362
2361
2360
6.0
5.5
5.0
4.5
4.0
3.5
3.0
Figure 18. ADC Code vs. Temperature (Fixed Analog Input)
–40 –25 –15 –5
–40
Figure 17. Switch On Resistance vs. Temperature
(X+, Y+: Pin to V
–25
–10
TEMPERATURE (°C)
5
TEMPERATURE (°C)
10
CC
15
; X−, Y−: Pin to GND)
25
25
35
40
45
55
55
X+ TO V
Y+ TO V
X– TO GND
Y– TO GND
65
70
CC
CC
75
85
85