參數(shù)資料
型號(hào): LT6235CGN
廠商: LINEAR TECHNOLOGY CORP
元件分類: 運(yùn)動(dòng)控制電子
英文描述: 60MHz, Rail-to-Rail Output, 1.9nV / SIGME Hz, 1.15mA Op Amp Family
中文描述: QUAD OP-AMP, 450 uV OFFSET-MAX, 60 MHz BAND WIDTH, PDSO16
封裝: 0.150 INCH, PLASTIC, SSOP-16
文件頁(yè)數(shù): 18/24頁(yè)
文件大?。?/td> 727K
代理商: LT6235CGN
LT6233/LT6233-10/
LT6234/LT6235
18
623345f
APPLICATIU
W
U
U
With R
S
+ R
G
||R
FB
= 225
the total noise of the
amplifier is:
e
N
=
(1.9nV)
2
+(1.9nV)
2
= 2.69nV/
Hz
Below this resistance value, the amplifier dominates the
noise, but in the region between 225
and about 30k, the
noise is dominated by the resistor thermal noise. As the
total resistance is further increased beyond 30k, the
amplifier noise current multiplied by the total resistance
eventually dominates the noise.
The product of e
N
I
SUPPLY
is an interesting way to gauge
low noise amplifiers. Most low noise amplifiers with low
e
N
have high I
SUPPLY
current. In applications that require
low noise voltage with the lowest possible supply current,
this product can prove to be enlightening. The LT6233/
LT6234/LT6235 have an e
N
I
SUPPLY
product of only 2.1
per amplifier, yet it is common to see amplifiers with
similar noise specifications to have e
N
I
SUPPLY
as high
as 13.5.
For a complete discussion of amplifier noise, see the
LT1028 data sheet.
Enable Pin
The LT6233 and LT6233-10 include an ENABLE pin that
shuts down the amplifier to 10
μ
A maximum supply cur-
rent. The ENABLE pin must be driven high to within 0.35V
of V
+
to shut down the supply current. This can be
accomplished with simple gate logic; however care must
be taken if the logic and the LT6233 operate from different
supplies. If this is the case, then open drain logic can be
used with a pull-up resistor to ensure that the amplifier
remains off. See Typical Characteristic Curves.
The output leakage current when disabled is very low;
however, current can flow into the input protection diodes
D1 and D2 if the output voltage exceeds the input voltage
by a diode drop.
相關(guān)PDF資料
PDF描述
LT6233-10 60MHz, Rail-to-Rail Output, 1.9nV / SIGME Hz, 1.15mA Op Amp Family
LT6233CS6 60MHz, Rail-to-Rail Output, 1.9nV / SIGME Hz, 1.15mA Op Amp Family
LT6234 60MHz, Rail-to-Rail Output, 1.9nV / SIGME Hz, 1.15mA Op Amp Family
LT6234CDD 60MHz, Rail-to-Rail Output, 1.9nV / SIGME Hz, 1.15mA Op Amp Family
LT6234CS8 60MHz, Rail-to-Rail Output, 1.9nV / SIGME Hz, 1.15mA Op Amp Family
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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