参数资料
型号: AD7294BCPZRL
厂商: Analog Devices Inc
文件页数: 10/49页
文件大小: 0K
描述: IC ADC 12BIT I2C/SRL 1M 56LFCSP
标准包装: 2,500
类型: ADC,DAC
分辨率(位): 12 b
采样率(每秒): 22.22k
数据接口: I²C,串行
电压电源: 模拟和数字
电源电压: 4.4 V ~ 5.5 V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 56-VFQFN 裸露焊盘,CSP
供应商设备封装: 56-LFCSP-VQ(8x8)
包装: 带卷 (TR)
Data Sheet
AD7294
Rev. H | Page 17 of 48
0.8
–0.8
–0.6
–0.4
–0.2
0.2
0.6
0
0.4
0
20
18
16
14
12
10
8
6
4
2
(%)
TIME (s)
64pF
1nF
10nF
05747-
085
Figure 24. Zoomed in Settling for a to Output Voltage Step
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
40
35
30
25
20
15
10
5
V
O
UT
(V)
SINK CURRENT (mA)
DAC A
DAC B
DAC C
DAC D
05747-
090
AVDD = DVDD = 5V
OFFSET IN = FLOATING
DAC OUT V = 15V
VDRIVE = 5V, INTERNAL REF
Figure 25. DAC Sinking Current at Input Code = x000, (VOUT = 0 V)
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
–1.0
0
40
35
30
25
20
15
10
5
V
O
UT
(V+
)
SOURCE CURRENT (mA)
DAC A
DAC B
DAC C
DAC D
05747-
091
AVDD = DVDD = 5V
OFFSET IN = FLOATING
DAC OUT V = 15V
VDRIVE = 5V, INTERNAL REF
Figure 26. DAC Sourcing Current at Input Code = x000, (VOUT = 0 V)
100
80
60
40
20
0
–20
–40
–60
–80
–100
–50
50
20
40
30
10
0
–10
–20
–30
–40
CHANG
E
I
N
O
UT
P
UT
V
O
L
T
AG
E
(
mV
)
LOAD CURRENT (mA)
DAC A
DAC B
DAC C
DAC D
05747-
092
AVDD = DVDD = 5V
OFFSET IN = FLOATING
DAC OUT V = 15V
VDRIVE = 5V, INTERNAL REF
Figure 27. DAC Output Voltage vs. Load Current, Input Code = x800
55
50
45
40
35
30
25
20
–5
0
5
10
15
20
T
E
M
P
E
RAT
URE
RE
ADI
NG
(
°C)
TIME (Seconds)
05747-
064
Figure 28. Response of the AD7294 to Thermal Shock Using 2N3906
(2N3906 Placed in a Stirred Oil Bath)
55
50
45
40
35
30
25
–5
0
60
55
50
45
40
35
30
25
20
15
10
5
T
EMPER
A
T
U
R
E
C
)
TIME (Seconds)
EXTERNAL
INTERNAL
AD7294 IN SOCKET ON
200mm × 100mm 2-LAYER FR-4 PCB
05747-
066
Figure 29. Response to Thermal Shock from Room Temperature into 50°C
Stirred Oil (Both the AD7294 and the 2N3906 are Placed in a Stirred Oil Bath)
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