AV
參數(shù)資料
型號(hào): AD7194BCPZ-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 54/57頁
文件大?。?/td> 0K
描述: IC ADC 24BIT SPI 4.8KHZ 32LFCSP
標(biāo)準(zhǔn)包裝: 1,500
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: 32-WFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-WQ(5x5)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 8 個(gè)差分,單極;8 個(gè)差分,雙極;16 個(gè)偽差分,單極;16 偽差分,雙極
Data Sheet
AD7194
Rev. A | Page 5 of 56
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments1
REFERENCE INPUT
REFIN Voltage
1
AVDD
V
REFIN = REFINx(+) REFINx(), the
differential input must be limited to
±(AVDD 1.25 V)/gain when gain > 1
Absolute REFIN Voltage
Limits2
AGND 0.05
AVDD + 0.05
V
Average Reference Input
Current
4.5
A/V
Average Reference Input
Current Drift
±0.03
nA/V/°C
External clock
±1.3
nA/V/°C
Internal clock
Normal Mode Rejection2
Same as for
analog inputs
Common-Mode
Rejection
100
dB
Reference Detect Levels
0.3
0.6
V
TEMPERATURE SENSOR
Accuracy
±2
°C
Applies after user calibration at 25°C
Sensitivity
2815
Codes/°C
Bipolar mode
BURNOUT CURRENTS
AIN Current
500
nA
Analog inputs must be buffered and chop
disabled
DIGITAL OUTPUTS (P0 to P3)
Output High Voltage, VOH
AVDD 0.6
V
AVDD = 3 V, ISOURCE = 100 μA
4
V
AVDD = 5 V, ISOURCE = 200 μA
Output Low Voltage, VOL
0.4
V
AVDD = 3 V, ISINK = 100 μA
0.4
V
AVDD = 5 V, ISINK = 800 μA
Floating-State Leakage
Current2
100
+100
nA
Floating-State Output
Capacitance
10
pF
INTERNAL/EXTERNAL CLOCK
Internal Clock
Frequency
4.72
5.12
MHz
Duty Cycle
50:50
%
External Clock/Crystal
Frequency
2.4576
4.9152
5.12
MHz
Input Low Voltage, VINL
0.8
V
DVDD = 5 V
0.4
V
DVDD = 3 V
Input High Voltage, VINH
2.5
V
DVDD = 3 V
3.5
V
DVDD = 5 V
Input Current
10
+10
A
LOGIC INPUTS
Input High Voltage, VINH2
2
V
Input Low Voltage, VINL2
0.8
V
Hysteresis2
0.1
0.25
V
Input Currents
10
+10
A
LOGIC OUTPUT (DOUT/RDY)
Output High Voltage, VOH2
DVDD 0.6
V
DVDD = 3 V, ISOURCE = 100 A
4
V
DVDD = 5 V, ISOURCE = 200 A
Output Low Voltage, VOL2
0.4
V
DVDD = 3 V, ISINK = 100 A
0.4
V
DVDD = 5 V, ISINK = 1.6 mA
Floating-State Leakage
Current
10
+10
A
Floating-State Output
Capacitance
10
pF
Data Output Coding
Offset binary
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