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參數(shù)資料
| 型號： | LOG2112AIDWRE4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 模擬運算功能 |
| 英文描述： | LOG OR ANTILOG AMPLIFIER, PDSO16 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS-013AA, SOIC-16 |
| 文件頁數(shù)： | 16/20頁 |
| 文件大?。?/td> | 621K |
| 代理商： | LOG2112AIDWRE4 |
LOG112, 2112
5
SBOS246D
www.ti.com
TYPICAL CHARACTERISTICS
At TA = +25°C, VS = ±5V, and RL = 10k, unless otherwise noted.
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
Normalized
Output
V
oltage
(V)
NORMALIZED TRANSFER FUNCTION
0.0001 0.001
0.01
0.1
1
10
100
1k
10k
Current Ratio, I
1/I2
V
LOGOUT = (0.5V)LOG (I1/I2)
ONE CYCLE OF NORMALIZED TRANSFER FUNCTION
Normalized
Output
Voltage
(V)
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
110
Current Ratio, I
1/I2
8
7
6
5
4
3
2
1
0
–1
–2
1nA
10nA 100nA 1
A10A 100A 1mA 10mA
100pA
GAIN ERROR (I
2 = 1A)
Input Current (I
1 or I2)
Gain
Error
(%)
–40
°C
+75
°C
–5
°C +25°C
+85
°C
–20
–15
–10
–5
0
5
10
15
20
–20
–15
–10
–5
0
5
10
15
20
1mA
10
A
100nA
1nA
10nA
100nA
1
A
10
A
100
A
1mA
1nA
I
1
I
2
Total
Error
(mV)
TOTAL ERROR (–5
°C)
Total
Error
(mV)
10 to 15
5 to 10
0 to 5
–5 to 0
–20
–15
–10
–5
0
5
10
15
20
–20
–15
–10
–5
0
5
10
15
20
1mA
10
A
100
A
1
A
100nA
1nA
10nA
100nA
1
A
10
A
100
A
1mA
10nA
1nA
I
1
I
2
Total
Error
(mV)
Total
Error
(mV)
5 to 10
0 to 5
–5 to 0
TOTAL ERROR (25
°C)
–20
20
0
40
60
80
100
–20
0
20
40
60
80
100
1mA
10
A
100
A
1
A
100nA
1nA
10nA
100nA
1
A
10
A
100
A
1mA
10nA
1nA
I
1
I
2
Total
Error
(mV)
Total
Error
(mV)
20 to 40
0 to 20
40 to 60
60 to 80
80 to 100
–20 to 0
TOTAL ERROR (70
°C)
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