參數(shù)資料
型號: LOG104AIDR
廠商: Texas Instruments, Inc.
英文描述: LOGARITHMIC AND LOG RATIO AMPLIFIER
中文描述: 對數(shù)和對數(shù)比率放大器
文件頁數(shù): 10/13頁
文件大?。?/td> 273K
代理商: LOG104AIDR
www.ti.com
LOG104
SBOS243B
10
(8)
(9)
(10)
(11)
(12)
(13)
INDIVIDUAL ERROR COMPONENTS
The ideal transfer function with current input is:
V
V
I
I
OUT
=
(
)
0 5
.
1
2
log
The actual transfer function with the major components of
error is:
V
V
K
I
I
I
I
Nm
V
OUT
B
B
OS O
=
(
)
±
(
)
±
±
0 5
.
1
1
1
2
2
log
The individual component of error is:
K = gain accuracy (0.15%, typ), as specified in
specification table.
I
B1
= bias current of A
1
(5pA, typ)
I
B2
= bias current of A
2
(5pA, typ)
N = log conformity error (0.01%, 0.06%, typ)
0.01% for n = 5, 0.06% for n = 7.5
V
OSO
= output offset voltage (3mV, typ)
m = number of decades over which N is specified:
Example: what is the error when
I
1
= 1
μ
A and I
2
= 100nA
V
mV
OUT
=
±
(
)
±
(
2 0 00015
.
±
0 5
.
0 0015
.
10
10
5 10
5 10
3 0
.
6
12
7
12
log
= 0.5055V
Since the ideal output is 0.5V, the error as a percent of
reading is
%
.
.
%
1. %
error
=
=
0 5055
0 5
100
For the case of voltage inputs, the actual transfer function is
V
V
K
V
R
V
R
I
E
R
E
R
I
Nm
V
OUT
B
OS
B
OS
OSO
=
(
)
±
(
)
±
±
±
±
0 5
.
1
1
1
1
1
1
2
2
2
2
2
log
Where
E
R
andE
R
OS
OS
1
1
2
2
are considered to be zero for large
values of resistance from external input current sources.
相關(guān)PDF資料
PDF描述
LOG112 Precision, High-Speed Transimpedance Amplifier
LOGT670-J Multi TOPLED
LOGT670-JL Multi TOPLED
LOGT670-K Multi TOPLED
LOGT670-HK Multi TOPLED
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LOG104AIDRE4 功能描述:對數(shù)放大器 LOGARITHMIC AMP RoHS:否 制造商:Texas Instruments 通道數(shù)量:3 帶寬:3 dB 共模抑制比(最小值): 輸入補(bǔ)償電壓:+/- 7 mV 輸入電壓范圍(最大值):5.5 V 工作電源電壓:4.5 V to 5.5 V 電源電流:+/- 15 mA 工作溫度范圍:- 40 C to +85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel
LOG112 制造商:BB 制造商全稱:BB 功能描述:Precision, High-Speed Transimpedance Amplifier
LOG112AID 功能描述:對數(shù)放大器 Precision Log & Log Ratio Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:3 帶寬:3 dB 共模抑制比(最小值): 輸入補(bǔ)償電壓:+/- 7 mV 輸入電壓范圍(最大值):5.5 V 工作電源電壓:4.5 V to 5.5 V 電源電流:+/- 15 mA 工作溫度范圍:- 40 C to +85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel
LOG112AID 制造商:Texas Instruments 功能描述:IC AMP LOG SMD SOIC14 112
LOG112AIDE4 功能描述:對數(shù)放大器 Precision Log & Log Ratio Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:3 帶寬:3 dB 共模抑制比(最小值): 輸入補(bǔ)償電壓:+/- 7 mV 輸入電壓范圍(最大值):5.5 V 工作電源電壓:4.5 V to 5.5 V 電源電流:+/- 15 mA 工作溫度范圍:- 40 C to +85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel