參數(shù)資料
型號: AD7190BRUZ-REEL
廠商: Analog Devices Inc
文件頁數(shù): 38/41頁
文件大小: 0K
描述: IC ADC 2CH 24BIT W/PGA 24TSSOP
設(shè)計資源: Precision Weigh Scale Design Using AD7190 with Internal PGA (CN0102)
標(biāo)準(zhǔn)包裝: 2,500
位數(shù): 24
采樣率(每秒): 4.8k
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 24-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 24-TSSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 2 個差分,雙極;4 個偽差分,雙極
Data Sheet
AD7190
Rev. C | Page 5 of 40
Parameter
AD7190B
Unit
Test Conditions/Comments1
Normal Mode Rejection2
Same as for analog inputs
Common-Mode Rejection
95
dB typ
Reference Detect Levels
0.3
V min
0.6
V max
TEMPERATURE SENSOR
Accuracy
±2
°C typ
Applies after user calibration at 25°C.
Sensitivity
2815
Codes/°C typ
Bipolar mode.
BRIDGE POWER-DOWN SWITCH
RON
10
Ω max
Allowable Current2
30
mA max
Continuous current.
BURNOUT CURRENTS
AIN Current
500
nA nom
Analog inputs must be buffered and chop
disabled.
DIGITAL OUTPUTS (P0 to P3)
Output High Voltage, VOH2
4
V min
AVDD = 5V, ISOURCE = 200 μA.
Output Low Voltage, VOL2
0.4
V max
AVDD = 5V, ISINK = 800 μA.
Floating-State Leakage Current
±100
nA max
Floating-State Output
Capacitance
10
pF typ
INTERNAL/EXTERNAL CLOCK
Internal Clock
Frequency
4.92 ± 4%
MHz min/max
Duty Cycle
50:50
% typ
External Clock/Crystal2
Frequency
4.9152
MHz nom
2.4576/5.12
MHz min/max
Input Low Voltage, VINL
0.8
V max
DVDD = 5 V.
0.4
V max
DVDD = 3 V.
Input High Voltage, VINH
2.5
V min
DVDD = 3 V.
3.5
V min
DVDD = 5 V.
Input Current
±10
μA max
LOGIC INPUTS
Input High Voltage, VINH2
2
V min
Input Low Voltage, VINL2
0.8
V max
Hysteresis2
0.1/0.25
V min/V max
Input Currents
±10
μA max
LOGIC OUTPUT (DOUT/RDY)
Output High Voltage, VOH2
DVDD 0.6
V min
DVDD = 3 V, ISOURCE = 100 μA.
Output Low Voltage, VOL2
0.4
V max
DVDD = 3 V, ISINK = 100 μA.
Output High Voltage, VOH2
4
V min
DVDD = 5 V, ISOURCE = 200 μA.
Output Low Voltage, VOL2
0.4
V max
DVDD = 5 V, ISINK = 1.6 mA.
Floating-State Leakage Current
±10
μA max
Floating-State Output
Capacitance
10
pF typ
Data Output Coding
Offset binary
SYSTEM CALIBRATION2
Full-Scale Calibration Limit
1.05 × FS
V max
Zero-Scale Calibration Limit
1.05 × FS
V min
Input Span
0.8 × FS
V min
2.1 × FS
V max
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