AD7873BCP Analog Devices Inc, AD7873BCP Datasheet - Page 10

• Manufacturer Part Number: AD7873BCP
• Description: IC ADC 12BIT TOUCHSCREEN 16LFCSP
• Manufacturer: Analog Devices Inc
• Type: Resistiver

Specifications of AD7873BCP

• Rohs Status: RoHS non-compliant
• Touch Panel Interface: 4-Wire
• Number Of Inputs/keys: 1 TSC
• Resolution (bits): 12 b
• Data Interface: Serial
• Data Rate/sampling Rate (sps, Bps): 125k
• Voltage Reference: External, Internal
• Voltage - Supply: 2.2 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-LFCSP
• Voltage Supply Source: Single Supply
• Sampling Rate (per Second): 125k

AD7873
7.5
6.5
5.5
4.5
3.5
2.5
1.5
0.5
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
10
9
8
7
6
5
4
0
Figure 13. Linearity Error vs. Sampling Rate for Various R
10
2.0
15
Figure 11. Reference Current vs. Sample Rate
35
Y+
25
Figure 12. Switch On Resistance vs. +V
2.5
(X+, Y+: +V
X–
X+
55
40
INL: R = 500Ω
3.0
DNL: R = 2kΩ
SAMPLING RATE (kSPS)
Y–
75
CC
SAMPLE RATE (kHz)
55
to Pin; X−, Y−: Pin to GND)
DNL: R = 500Ω
3.5
95
+V
CC
70
(V)
115
4.0
85
135
INL: R = 2kΩ
4.5
100
155
CC
5.0
115
175
IN
130
195
5.5
Rev. E | Page 10 of 28
2.5006
2.5004
2.5002
2.5000
2.4998
2.4996
2.4994
2.4992
2.4990
2.4988
14
13
12
11
10
9
8
7
6
5
4
3
–40
9
8
7
6
5
4
3
2
–40
–40 –30 –20 –10
Figure 15. Switch On Resistance vs. Temperature
Figure 14. Reference Current vs. Temperature
(X+, Y+: +VCC to Pin; X−, Y−: Pin to GND)
–20
Figure 16. Internal V
–20
0
Y–
0
TEMPERATURE (°C)
0
TEMPERATURE (°C)
TEMPERATURE (°C)
20
10
20
REF
Y+
20
vs. Temperature
40
30
X–
40
40
60
50
60
X+
60
80
70
80
100
80