參數(shù)資料
型號: EVAL-AD7795EBZ
廠商: Analog Devices Inc
文件頁數(shù): 9/37頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR AD7795
標(biāo)準(zhǔn)包裝: 1
ADC 的數(shù)量: 1
位數(shù): 16
采樣率(每秒): 470
數(shù)據(jù)接口: SPI?、QSPI?、MICROWIRE? 和 DSP
輸入范圍: ±VREF/增益
在以下條件下的電源(標(biāo)準(zhǔn)): 2.5mW @ 470SPS
工作溫度: -40°C ~ 105°C
已用 IC / 零件: AD7795
已供物品:
AD7794/AD7795
Rev. D | Page 16 of 36
TYPICAL PERFORMANCE CHARACTERISTICS
8388800
8388450
8388500
8388550
8388600
8388650
8388700
8388750
0
1000
800
600
400
200
04
85
4-
0
06
READING NUMBER
CO
DE
RE
AD
Figure 6. Typical Noise Plot for the AD7794 (Internal Reference,
Gain = 64, Update Rate = 16.7 Hz, Chop Enabled)
16
0
2
4
6
8
10
12
14
8388482
8388750
8388720
8388680
8388640
8388600
8388560
8388520
04
85
4-
0
07
O
CCURR
E
NCE
CODE
Figure 7. Noise Distribution Histogram for the AD7794 (Internal Reference,
Gain = 64, Update Rate = 16.7 Hz, Chop Enabled)
8388450
8388050
8388100
8388150
8388200
8388250
8388300
8388350
8388400
0
1000
800
600
400
200
04
85
4-
0
08
READING NUMBER
CO
DE
RE
AD
Figure 8. Typical Noise Plot for the AD7794 (Internal Reference,
Gain = 64, Update Rate = 16.7 Hz, AMP-CM = 1, Chop Disabled)
14
0
2
4
6
8
10
12
8388068
8388396
8388350
8388300
8388250
8388200
8388150
8388100
04
85
4-
0
09
O
C
CURRE
NCE
CODE
Figure 9. Noise Distribution Histogram for the AD7794 (Internal Reference,
Gain = 64, Update Rate = 16.7 Hz, Chop Disabled, AMP-CM = 1)
20
10
0
–2.0 –1.2 –0.8 –0.4
0
0.4
0.8
1.2
1.6
2.0
04
85
4-
0
10
MATCHING (%)
(%
)
Figure 10. Excitation Current Matching (210 μA) at Ambient Temperature
90
80
70
60
50
40
30
20
10
0
200
400
600
800
1000
04
85
4-
0
1
LOAD CAPACITANCE (nF)
PO
W
E
R
-U
P
T
IME
(m
s)
BOOST = 0
BOOST = 1
Figure 11. Bias Voltage Generator Power-Up Time vs. Load Capacitance
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