參數(shù)資料
型號(hào): LOG114AIRGVT
廠商: TEXAS INSTRUMENTS INC
元件分類: 模擬運(yùn)算功能
英文描述: LOG OR ANTILOG AMPLIFIER, PQCC16
封裝: 4 X 4 MM, GREEN, PLASTIC, QFN-16
文件頁(yè)數(shù): 27/29頁(yè)
文件大小: 637K
代理商: LOG114AIRGVT
LOG114
SBOS301A MAY 2004 REVISED MARCH 2007
www.ti.com
7
TYPICAL CHARACTERISTICS: VS = +5V
All specifications at TA = +25°C, RVLOGOUT = 10k, VCM = GND, unless otherwise noted.
2.0
1.5
1.0
0.5
0
0.5
1.0
1.5
2.0
N
o
rm
a
liz
e
d
O
u
tp
ut
V
o
lt
ag
e
(V
)
NORMALIZED TRANSFER FUNCTION
104
103
102
101
1101
102
103
104
Current Ratio (I
1/I2)
ONE CYCLE OF NORMALIZED TRANSFER FUNCTION
N
o
rm
a
liz
e
d
O
u
tp
u
t
Vo
lt
a
g
e
(V)
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
110
Current Ratio (I
1/I2)
40
30
20
10
0
10
20
1nA
10nA 100nA 1
A10A100A 1mA 10mA
100pA
SCALING FACTOR ERROR (I
2 = reference 100pA to 10mA)
Input Current (I
1)
Ga
in
E
rro
r
(%
)
+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
A10A100A 1mA 10mA
100pA
V
LOGOUT vs I1 INPUT (I2 =1A)
Input Current (I
1)
V
L
O
GOU
T
(V
)
2.0
1.5
1.0
0.5
0
0.5
1.0
1.5
2.0
2.5
1nA
10nA 100nA 1
A10A100A1mA
100pA
V
LOGOUT vs I2 INPUT (I1 =1A)
Input Current (I
1)
V
L
OGOU
T
(V
)
10mA
4
3
2
1
0
1
2
3
4
1nA
10nA 100nA 1
A10A 100A 1mA 10mA
100pA
V
LOGOUT vs IREF
I
REF (I2)
V
L
OGO
U
T
(V
)
100pA
1nA
10nA
100nA
1
A
100
A
10
A
10mA
1mA
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