参数资料
型号: AD7291BCPZ-RL7
厂商: Analog Devices Inc
文件页数: 2/29页
文件大小: 0K
描述: IC ADC I2C/SRL 22.22K 20LFCSP
标准包装: 1,500
位数: 12
采样率(每秒): 22.22k
数据接口: I²C,串行
转换器数目: 1
功率耗散(最大): 12.6mW
电压电源: 单电源
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 20-WFQFN 裸露焊盘,CSP
供应商设备封装: 20-LFCSP-WQ(4x4)
包装: 带卷 (TR)
输入数目和类型: 8 个单端,单极
配用: EVAL-AD7291SDZ-ND - BOARD EVAL FOR AD7291
Data Sheet
AD7291
Rev. B | Page 9 of 28
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
CURRENT LOAD (mA)
V
RE
F
(V
)
VDD = VDRIVE = 3V
08
71
1-
02
1
Figure 10. VREF vs. Reference Output Drive
20
25
30
35
40
45
50
55
0
20406080
100
TE
M
P
E
R
A
T
URE
RE
AD
IN
G
(
°C)
TIME (Seconds)
0
87
1
1-
01
4
Figure 11. Response to Thermal Shock from Room Temperature into 50°C
Stirred Oil
–110
–108
–106
–104
–102
–100
–98
–96
–94
–92
–90
1k
10k
100k
1M
10M
100M
P
S
RR
(
d
B)
RIPPLE FREQUENCY (Hz)
VDD = 3V
VDRIVE = 3V
08
7
1
-06
1
Figure 12. PSRR vs. Supply Ripple Frequency Without Supply Decoupling
125
120
115
110
105
100
95
90
85
80
75
1
10
100
1k
fNOISE (kHz)
CH
ANNE
L
-T
O
-CHANNE
L
I
S
O
L
AT
IO
N
(
d
B)
08
71
1-
0
18
VDD = VDRIVE = 3V
fSCL = 400kHz
Figure 13. Channel-to-Channel Isolation, fIN = 10 kHz
72
71
70
69
02
2.0
1.5
1.0
0.5
S
IN
AD
(
d
B)
EXTERNAL REFERENCE (V)
08
71
1-
03
6
.5
VDRIVE = 3V
VDD = 3V
Figure 14. SINAD vs. Reference Voltage, fSCL = 400 kHz, fs = 22.22 kSPS
–2.0
–1.0
–1.5
–0.5
0
0.5
1.0
1.5
–40
–25
–10
5
20
35
50
65
80
95
110
125
TEMPERATURE (°C)
T
EM
PER
A
T
U
R
E
ER
R
O
R
C
)
08
71
1-
01
7
Figure 15. Temperature Accuracy at 3 V
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