參數(shù)資料
型號: LOG114AIRGVR
元件分類: 對數(shù)放大器
英文描述: Single-Supply, High-Speed, Precision LOGARITHMIC AMPLIFIER
中文描述: 單電源,高速,精密對數(shù)放大器
文件頁數(shù): 7/30頁
文件大?。?/td> 616K
代理商: LOG114AIRGVR
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SBOS301A MAY 2004 REVISED MARCH 2007
www.ti.com
7
TYPICAL CHARACTERISTICS: V
S
= 5V
All specifications at T
A
= +25
°
C, R
VLOGOUT
= 10k
, V
CM
= GND, unless otherwise noted.
2.0
1.5
1.0
0.5
0
0.5
1.0
1.5
2.0
N
NORMALIZED TRANSFER FUNCTION
10
4
10
3
10
2
10
1
1
10
1
10
2
10
3
10
4
Current Ratio (I
1
/I
2
)
ONE CYCLE OF NORMALIZED TRANSFER FUNCTION
N
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
1
10
Current Ratio (I
1
/ I
2
)
40
30
20
10
0
10
20
1nA
10nA 100nA 1
μ
A
10
μ
A 100
μ
A 1mA
10mA
100pA
SCALING FACTOR ERROR (I
2
= reference 100pA to 10mA)
Input Current (I
1
)
G
+90 C
+80 C
+70 C
0 C
+25 C
10 C
2.5
2.0
1.5
1.0
0.5
0
0.5
1.0
1.5
2.0
2.5
1nA
10nA 100nA 1
μ
A
10
μ
A 100
μ
A 1mA
10mA
100pA
V
LOGOUT
vs I
1
INPUT (I
2
= 1
μ
A)
Input Current (I
1
)
V
L
(
2.0
1.5
1.0
0.5
0
0.5
1.0
1.5
2.0
2.5
1nA
10nA 100nA 1
μ
A
10
μ
A 100
μ
A 1mA
100pA
V
LOGOUT
vs I
2
INPUT (I
1
= 1
μ
A)
Input Current (I
1
)
V
L
(
10mA
4
3
2
1
0
1
2
3
4
100pA
1nA
10nA 100nA 1
μ
A
10
μ
A 100
μ
A 1mA
10mA
V
LOGOUT
vs I
REF
I
REF
(I
2
)
V
L
(
100pA
1nA
10nA
100nA
1
μ
A
100
μ
A
10
μ
A
10mA
1mA
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