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| 型号： | LOG101AID |
| 英文描述： | Precision LOGARITHMIC AND LOG RATIO AMPLIFIER |
| 中文描述： | 精密对数和对数比率放大器 |
| 文件页数： | 8/13页 |
| 文件大小： | 281K |
| 代理商： | LOG101AID |
www.ti.com
LOG101
4
SBOS242B
TYPICAL CHARACTERISTICS
At TA = +25°C, VS = ±5V, and 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/I2
48
4.0
3.0
2.0
1.0
0.0
–1.0
–2.0
–3.0
–4.0
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
OUT = 1V LOG (I1/I2)
3dB FREQUENCY RESPONSE
3dB
Frequency
Response
(Hz)
0.1
1M
100k
10k
1k
100
10
1
100
A
100
A
1mA
I
1 = 1mA
1
A
1mA
to 10
A
100nA
10nA
I
1 = 1nA
10nA
C C
= 1000pF
C C
= 1
F
10
A to
1
A
C C
= 1
0p
F
1nA
100
A
100pA
1nA
10nA
100nA
1
A10A 100A1mA
I
2
1
A
10
A
100
A
I
1 = 1nA
10nA
120
100
80
60
40
20
0
100pA 1nA
10nA 100nA
1
A10A 100A 1mA 10mA
TOTAL ERROR vs INPUT CURRENT
Input Current (I
1 or I2)
T
otal
Error
(mV)
+75
°C
+25
°C –5°C
5.8
4.8
3.8
2.8
1.8
0.8
–0.2
100pA 1nA
10nA 100nA 1
A10A 100A 1mA 10mA
GAIN ERROR (I
2 = 1A)
Input Current (I
1 or I2)
Gain
Error
(%)
–5
°C to –40°C
+85
°C
+75
°C
+25
°C
MINIMUM VALUE OF COMPENSATION CAPACITOR
100M
10M
1M
100k
10k
1k
100
10
1
C
(pF)
100pA
1nA
10nA 100nA
1
A10A 100A 1mA 10mA
I
2
I
1 = 100pA
I
1 = 1nA
I
1 = 10nA
I
1 = 100nA
1
A
I
1 = 10A
100
A
1mA
Select C
C for I1 min.
and I
2 max. Values
below 2pF may be ignored.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LOG101AIDE4 | 功能描述:对数放大器 LOGARITHMIC AMP RoHS:否 制造商:Texas Instruments 通道数量:3 带宽:3 dB 共模抑制比（最小值）: 输入补偿电压:+/- 7 mV 输入电压范围（最大值）:5.5 V 工作电源电压:4.5 V to 5.5 V 电源电流:+/- 15 mA 工作温度范围:- 40 C to +85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
| LOG101AIDR | 功能描述:对数放大器 LOGARITHMIC AMP RoHS:否 制造商:Texas Instruments 通道数量:3 带宽:3 dB 共模抑制比（最小值）: 输入补偿电压:+/- 7 mV 输入电压范围（最大值）:5.5 V 工作电源电压:4.5 V to 5.5 V 电源电流:+/- 15 mA 工作温度范围:- 40 C to +85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
| LOG101AIDRE4 | 功能描述:对数放大器 LOGARITHMIC AMP RoHS:否 制造商:Texas Instruments 通道数量:3 带宽:3 dB 共模抑制比（最小值）: 输入补偿电压:+/- 7 mV 输入电压范围（最大值）:5.5 V 工作电源电压:4.5 V to 5.5 V 电源电流:+/- 15 mA 工作温度范围:- 40 C to +85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
| LOG102 | 制造商:TI 制造商全称:Texas Instruments 功能描述:LOGARITHMIC AND LOG RATIO AMPLIFIER |
| LOG102AID | 功能描述:对数放大器 Logarithmic and Log Ratio Amp RoHS:否 制造商:Texas Instruments 通道数量:3 带宽:3 dB 共模抑制比（最小值）: 输入补偿电压:+/- 7 mV 输入电压范围（最大值）:5.5 V 工作电源电压:4.5 V to 5.5 V 电源电流:+/- 15 mA 工作温度范围:- 40 C to +85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
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