VCC = 1.6 V to 3.6 V, T
參數(shù)資料
型號(hào): EVAL-AD7879EBZ
廠商: Analog Devices Inc
文件頁數(shù): 34/41頁
文件大小: 0K
描述: BOARD EVALUATION FOR AD7879
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,觸摸屏控制器
嵌入式:
已用 IC / 零件: AD7879
主要屬性: 4 線電阻式觸控屏控制器,I²C 和 SPI 接口
次要屬性: 圖形用戶界面,USB 接口
已供物品: 板,線纜,CD,觸控屏
AD7879/AD7889
Rev. C | Page 3 of 40
SPECIFICATIONS
VCC = 1.6 V to 3.6 V, TA = 40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DC ACCURACY
Resolution
12
Bits
No Missing Codes
11
12
Bits
Integral Nonlinearity (INL)1
±3
LSB
LSB size = 390 V.
Differential Nonlinearity (DNL)1
LSB size = 390 V.
Negative DNL
0.99
LSB
Positive DNL
2
LSB
Offset Error1, 2
±2
±6
LSB
Gain Error1, 2
±4
LSB
Noise3
70
V rms
Power Supply Rejection3
60
dB
Internal Clock Frequency
2
MHz
Internal Clock Accuracy
1.8
2.2
MHz
SWITCH DRIVERS
On Resistance1
Y+, X+
6
Y, X
5
ANALOG INPUTS
Input Voltage Range
0
VCC
V
DC Leakage Current
±0.1
A
Input Capacitance
30
pF
Accuracy
0.3
%
TEMPERATURE MEASUREMENT
Temperature Range
40
+85
°C
Resolution
0.3
°C
Accuracy2
±2
°C
Calibrated at 25°C.
BATTERY MONITOR
Input Voltage Range
0.5
5
V
Input Impedance3
16
k
Accuracy
2
5
%
Uncalibrated accuracy.
LOGIC INPUTS (DIN, SCL, CS, SDA, GPIO)
Input High Voltage, VINH
0.7 × VCC
V
Input Low Voltage, VINL
0.3 × VCC
V
Input Current, IIN
0.01
A
VIN = 0 V or VCC.
Input Capacitance, CIN3
10
pF
LOGIC OUTPUTS (DOUT, GPIO, SCL, SDA, INT)
Output High Voltage, VOH
VCC 0.2
V
Output Low Voltage, VOL
0.4
V
Floating-State Leakage Current
±0.1
A
Floating-State Output Capacitance2
5
pF
CONVERSION RATE3
Conversion Time
9.5
s
Including 2 s of acquisition time, MAV
filter off. 2 s of additional time is required
if MAV filter is on.
Throughput Rate
105
kSPS
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