EVAL-AD7877EBZ Analog Devices Inc, EVAL-AD7877EBZ Datasheet - Page 12

• 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
1
600
500
400
300
200
100
Figure 25. DAC Sink Current vs. Input Code with R
Figure 24. DAC O/P Settling Time (Zero Scale to Half Scale)
CH1
0
0
200mV CH2 100mV
25
50
DAC SINK CURRENT
75
NOTE: MAXIMUM DAC SINK CURRENT IS
SET ACCORDING TO THE EQUATION:
I
MAX
INPUT CODE (Decimal)
= V
100
CC
M2.00μs
/(R
125
V
TEMPERATURE = 25°C
RNG
DD
150
= 3V
× 6)
175
CH1
Δ
@: 1.296V
200
: 144mV
RNG
780mV
= 1 kΩ
225
250
Rev. B | Page 12 of 44
–2
Figure 26. Typical Accuracy for Battery Channel (25°C)
–1
ERROR (%)
0
1
2