參數(shù)資料
型號(hào): EVAL-AD7785EBZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 5/32頁(yè)
文件大小: 0K
描述: BOARD EVALUATION FOR AD7785
標(biāo)準(zhǔn)包裝: 1
ADC 的數(shù)量: 1
位數(shù): 20
采樣率(每秒): 470
數(shù)據(jù)接口: 串行
輸入范圍: ±VREF
工作溫度: -40°C ~ 105°C
已用 IC / 零件: AD7785
已供物品: 板,纜線,CD
相關(guān)產(chǎn)品: AD7785BRUZ-REEL-ND - IC ADC 20BIT 3CH LN LP 16-TSSOP
AD7785BRUZ-ND - IC ADC 20BIT SIGMA-DELTA 16TSSOP
AD7785
Rev. 0 | Page 13 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
8388800
8388450
8388500
8388550
8388600
8388650
8388700
8388750
0
1000
800
600
400
200
06
72
1-
00
6
READING NUMBER
CO
DE
RE
AD
Figure 6. Typical Noise Plot (Internal Reference, Gain = 64,
Update Rate = 16.7 Hz)
16
0
2
4
6
8
10
12
14
8388482
8388750
8388720
8388680
8388640
8388600
8388560
8388520
06
72
1-
00
7
O
CCUR
RE
NCE
CODE
Figure 7. Noise Distribution Histogram
(Internal Reference, Gain = 64, Update Rate = 16.7 Hz)
20
10
0
–2.0 –1.2 –0.8 –0.4
0
0.4
0.8
1.2
1.6
2.0
06
72
1-
00
8
MATCHING (%)
O
C
CURRE
NCE
(
%
)
Figure 8. Excitation Current Matching (210 μA) at Ambient
Temperature
20
10
0
–1.75 –1.05 –0.70 –0.35
0
0.35 0.70 1.05 1.40 1.75
06
72
1-
00
9
MATCHING (%)
O
C
CURRE
NCE
(
%
)
Figure 9. Excitation Current Matching (1 mA) at Ambient Temperature
90
80
70
60
50
40
30
20
10
0
200
400
600
800
1000
06
72
1-
01
0
LOAD CAPACITANCE (nF)
PO
W
E
R
-U
P
T
IM
E
(m
s)
Figure 10. Bias Voltage Generator Power-Up Time vs. Load Capacitance
3.0
2.5
2.0
1.5
1.0
0.5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
06
72
1-
0
1
REFERENCE VOLTAGE (V)
RM
S
NO
IS
E
(
V
)
VDD = 5V
UPDATE RATE = 16.6Hz
TA = 25°C
Figure 11. RMS Noise vs. Reference Voltage (Gain = 1)
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