參數(shù)資料
型號(hào): LOG102AIDG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 模擬運(yùn)算功能
英文描述: LOG OR ANTILOG AMPLIFIER, 1.4 MHz BAND WIDTH, PDSO14
封裝: GREEN, PLASTIC, MS-012AB, SOIC-14
文件頁數(shù): 13/18頁
文件大?。?/td> 490K
代理商: LOG102AIDG4
www.ti.com
LOG102
4
SBOS211B
TYPICAL CHARACTERISTICS
At TA = +25°C, VS = ±5V, RL = 10k, unless otherwise noted.
0
ONE CYCLE OF NORMALIZED TRANSFER FUNCTION
Normalized
Output
Voltage
(V)
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
26
110
3
Current Ratio,
I
1
I
2
48
3dB FREQUENCY RESPONSE
I
2
3dB
Frequency
Response
(Hz)
0.1
1nA
1M
100k
10k
1k
100
10
1
10nA
100nA
1
A10A
100
A
1mA
100
A
100
A
1mA
I
1 = 1mA
1
A
1mA
to 10
A
100nA
10nA
I
1 = 1nA
10nA
1
A
10
A
100
A
C C
=
1
F
C C
= 1000pF
10
A to
1
A
C C
= 10pF
I
1 = 1nA
1nA
100
A
NORMALIZED TRANSFER FUNCTION
Normalized
Output
Voltage
(V)
0.001
3
2
1
0
–1
–2
–3
0.01
1
100
Current Ratio,
0.1
10
1000
I
1
I
2
I
1
I
2
V
OUT = 1V Log
TOTAL ERROR vs INPUT CURRENT
Total
Error
(mV)
1nA
60
50
40
30
20
10
0
100nA
10nA
70
°C
0
°C
25
°C
10
A
100
A
Input Current
(I
1 or I2)
1
A
1mA
MINIMUM VALUE OF COMPENSATION CAPACITOR
C
(pF)
1nA
10000
1000
100
10
1
100nA
10nA
10
A
1mA
I
2
1
A
100
A
10mA
Select C
C for I1 min
and I
2 max
I
1 = 1nA
Values below 2pF
may be ignored.
I
1 = 1mA
I
1 = 100A
I
1 = 10nA
I
1 = 100nA
I
1 = 1A
I
1 = 10A
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
–0.05
–0.10
–60
–40
–20
0
20
40
60
80
GAIN ERROR vs TEMPERATURE
Gain
Error
(%)
Temperature (
°C)
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