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参数资料
| 型号： | LOG104AID |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟运算功能 |
| 英文描述： | LOG OR ANTILOG AMPLIFIER, 0.01 MHz BAND WIDTH, PDSO8 |
| 封装： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件页数： | 2/14页 |
| 文件大小： | 294K |
| 代理商： | LOG104AID |
www.ti.com
LOG104
10
SBOS243C
(8)
(9)
(10)
(11)
(12)
(13)
INDIVIDUAL ERROR COMPONENTS
The ideal transfer function with current input is:
VV
I
OUT =
(
)
05
1
2
.log
The actual transfer function with the major components of
error is:
VV
K
II
Nm
V
OUT
B
OS O
=
(
) ±
(
)
±±
05
1
11
22
.
log
–
The individual component of error is:
K = gain accuracy (0.15%, typ), as specified in
specification table.
IB1 = bias current of A1 (5pA, typ)
IB2 = bias current of A2 (5pA, typ)
N = log conformity error (0.01%, 0.06%, typ)
0.01% for n = 5, 0.06% for n = 7.5
VOSO = output offset voltage (3mV, typ)
m = number of decades over which N is specified:
Example: what is the error when
I1 = 1A and I2 = 100nA
VmV
OUT =±
(
)
±
( )(
) ±
0 5
0 0015
10
5 10
10
5 10
2 0 0001 5
3 0
612
712
.
log
..
= 0.5055V
Since the ideal output is 0.5V, the error as a percent of
reading is
%
.
%. %
error
=
0 5055
05
100
1 1
For the case of voltage inputs, the actual transfer function is
VV
K
V
R
I
E
R
V
R
I
E
R
Nm
V
OUT
B
OS
B
OS
OSO
=
(
) ±
(
)
±
±±
05
1
2
.log
–
Where
E
R
and
E
R
OS
1
2
are considered to be zero for large
values of resistance from external input current sources.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LOG104AID | 制造商:Texas Instruments 功能描述:IC AMP LOG SMD SOIC8 104 |
| LOG104AIDE4 | 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 |
| LOG104AIDG4 | 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 |
| LOG104AIDR | 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 |
| LOG104AIDRE4 | 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 |
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