參數(shù)資料
型號: AD7723BSZ
廠商: Analog Devices Inc
文件頁數(shù): 8/32頁
文件大?。?/td> 0K
描述: IC ADC 16BIT SIGMA-DELTA 44MQFP
標準包裝: 1
位數(shù): 16
采樣率(每秒): 1.2M
數(shù)據(jù)接口: 串行,并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-QFP
供應商設備封裝: 44-MQFP(10x10)
包裝: 托盤
輸入數(shù)目和類型: 1 個差分,單極;1 個差分,雙極
配用: EVAL-AD7723CBZ-ND - BOARD EVALUATION FOR AD7723
AD7723
Rev. C | Page 16 of 32
CODE
2000
0
32700
32713
32702
FRE
Q
UE
NCY
OF
OCCURRE
NCE
32704
32706
32708
32710
32712
1800
800
600
400
200
1400
1000
1600
1200
VIN(+) = VIN(–)
8192 SAMPLES TAKEN
01186-018
Figure 18. Histogram of Output Codes with DC Input
(Output Data Rate = 1.2 MHz)
CODE
5000
0
32703
32710
32704
FRE
Q
UE
NCY
OF
OCCURRE
NCE
32705
32706
32707
32708
32709
4500
2000
1500
1000
500
3500
2500
4000
3000
VIN(+) = VIN(–)
8192 SAMPLES TAKEN
01186-019
Figure 19. Histogram of Output Codes with DC Input
(Output Data Rate = 600 kHz)
1.0
0.8
–0.8
0
65535
16384
32768
49152
0.2
–0.2
–0.4
–0.6
0.6
0.4
0
–1.0
67108864 SAMPLES TAKEN
DIFFERENTIAL MODE
CODE
DNL
E
RROR
(LS
B
)
01186-020
Figure 20. Differential Nonlinearity (Output Data Rate = 1.2 MHz)
AD8047
RFB
220
220
27
220pF
A1
A2
VIN(+)
VIN(–)
REF1
REF2
AD7723
10nF
220nF
220
27
AIN =
±2V
BIASED
ABOUT
GROUND
1
F
RSOURCE
50
RIN
390
RBALANCE1
220
GAIN = 2
× R
FB/(RIN + RSOURCE)
RBALANCE1 = RBALANCE2 × (RIN + RSOURCE)/(2 × RFB)
RREF2 = RREF1 × (RIN + RSOURCE)/RFB
RREF1
10k
RREF2
20k
RBALANCE2
01186-
021
21
23
19
20
Figure 21. Differential Nonlinearity (Output Data Rate = 600 kHz)
1.0
0.8
–0.8
0
65535
16384
32768
49152
0.2
–0.2
–0.4
–0.6
0.6
0.4
0
–1.0
67108864 SAMPLES TAKEN
DIFFERENTIAL MODE
CODE
INL
E
RROR
(LS
B
)
01186-022
Figure 22. Integral Nonlinearity (Output Data Rate =1.2 MHz)
1.0
0.8
–0.8
0
65535
16384
32768
49152
0.2
–0.2
–0.4
–0.6
0.6
0.4
0
–1.0
67108864 SAMPLES TAKEN
DIFFERENTIAL MODE
CODE
INL
ERRO
R
(LSB)
01186-023
Figure 23. Integral Nonlinearity (Output Data Rate = 600 kHz)
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