参数资料
型号: AD8494CRMZ
厂商: Analog Devices Inc
文件页数: 14/16页
文件大小: 0K
描述: THERMOCOUPLE AMPLIFIER I
标准包装: 50
类型: 热电偶放大器
输入类型: 差分
输出类型: 模拟
电流 - 电源: 250µA
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 管件
AD8494/AD8495/AD8496/AD8497
Rev. C | Page 7 of 16
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, +VS = 5 V, RL = ∞, unless otherwise noted.
100
10
1
0.1
0.01
0.1
1
10
100
1k
10k
100k
FREQUENCY (Hz)
CM
RR
(
°C/
V
)
08
52
9-
03
5
AD8495/AD8497
AD8494
AD8496
Figure 3. CMRR vs. Frequency
1000
100
10
1
0
1
10
100
1k
10k
100k
FREQUENCY (Hz)
P
S
RR
(
°C
/V
)
08
52
9-
03
6
AD8495/AD8497
AD8494
AD8496
Figure 4. PSRR vs. Frequency
50
40
30
20
10
0
–10
–20
100
1k
10k
100k
1M
FREQUENCY (Hz)
G
A
IN
(
d
B
)
08
52
9-
0
18
AD8494
AD8496
AD8495/AD8497
Figure 5. Frequency Response
1200
1000
800
600
400
200
0
–200
TIME (50s/DIV)
T
E
M
P
E
R
AT
U
RE
R
E
AD
IN
G
C)
08
52
9-
0
19
CONNECTED
THERMOCOUPLE
OPEN THERMOCOUPLE
THERMOCOUPLE CONNECTION
AD849x OUTPUT
Figure 6. Output Response to Open Thermocouple,
IN Connected to Ground Through a 1 MΩ Resistor
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–0.5
0.5
1.5
2.5
3.5
4.5
5.5
OUTPUT VOLTAGE (V)
IN
PU
T
C
O
MM
O
N
-M
O
D
E
VO
L
T
A
G
E
(
V
)
08
52
9-
0
17
+0.05, +3.45
+0.05, +3.21
+4.91, +2.95
+4.91, +2.71
+0.05, –0.36
+0.05, –0.39
+4.91, –0.37
+4.91, –0.39
VREF = 0V
VREF = 2.5V
Figure 7. Input Common-Mode Voltage Range vs. Output Voltage,
+VS = 5 V, VREF = 0 V, and VREF = 2.5 V
35
30
25
20
15
10
5
40
0
1.75
1.50
1.25
1.00
0.75
0.50
0.25
2.00
0
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
INP
UT
BI
AS
CURRE
NT
(n
A)
INP
U
T
O
F
S
E
T
CUR
RE
NT
(
n
A)
085
29
-04
2
IBIAS
IOS
Figure 8. Input Bias Current and Input Offset Current vs. Temperature
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