VCC = 2.7 V to 3.6 V, V<" />
參數(shù)資料
型號(hào): AD7873ARQZ-REEL7
廠商: Analog Devices Inc
文件頁(yè)數(shù): 24/29頁(yè)
文件大?。?/td> 0K
描述: IC ADC 12BIT TOUCHSCREEN 16QSOP
標(biāo)準(zhǔn)包裝: 1,000
類型: 電阻
觸摸面板接口: 4 線
輸入數(shù)/鍵: 1 TSC
分辨率(位): 12 b
評(píng)估套件: 可供
數(shù)據(jù)接口: 串行
數(shù)據(jù)速率/采樣率 (SPS,BPS): 125k
電壓基準(zhǔn): 外部,內(nèi)部
電源電壓: 2.2 V ~ 5.25 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-QSOP
包裝: 帶卷 (TR)
Data Sheet
AD7873
Rev. F | Page 3 of 28
SPECIFICATIONS
VCC = 2.7 V to 3.6 V, VREF = 2.5 V internal or external, fDCLK = 2 MHz; TA = 40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
AD7873A1
AD7873B1
Unit
Test Conditions/Comments
DC ACCURACY
Resolution
12
Bits
No Missing Codes
11
12
Bits min
Integral Nonlinearity2
±2
± 1
LSB max
Differential Nonlinearity2
–0.9/+1.5
LSB max
Offset Error2
±6
LSB max
+VCC = 2.7 V
Gain Error2
±4
LSB max
External reference
Noise
70
V rms typ
Power Supply Rejection
70
dB typ
SWITCH DRIVERS
On Resistance2
Y+, X+
5
Ω typ
Y–, X–
6
Ω typ
ANALOG INPUT
Input Voltage Ranges
0 to VREF
V
DC Leakage Current
±0.1
A typ
Input Capacitance
37
pF typ
REFERENCE INPUT/OUTPUT
Internal Reference Voltage
2.45/2.55
V min/max
Internal Reference Tempco
±15
ppm/°C typ
VREF Input Voltage Range
1/VCC
V min/max
DC Leakage Current
±1
± 1
A max
VREF Input Impedance
1
GΩ typ
CS = GND or +VCC; typically 260 Ω when the
on-board reference is enabled
TEMPERATURE MEASUREMENT
Temperature Range
–40/+85
°C min/max
Resolution
Differential Method3
1.6
°C typ
Single Conversion Method4
0.3
°C typ
Accuracy
Differential Method3
±2
°C typ
Single Conversion Method4
±2
°C typ
BATTERY MONITOR
Input Voltage Range
0/6
V min/max
Input Impedance
10
kΩ typ
Sampling; 1 GΩ when battery monitor is off
Accuracy
±2.5
±2
% max
External reference
±3
% max
Internal reference
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
Input Low Voltage, VINL
0.4
V max
Input Current, IIN
±1
A max
Typically 10 nA, VIN = 0 V or +VCC
Input Capacitance, CIN5
10
pF max
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