the differential amp (R
參數(shù)資料
型號： LTC6404CUD-1#PBF
廠商： Linear Technology
文件頁數(shù)： 15/28頁
文件大小： 0K
描述： IC AMP/DRIVER DIFF 16-QFN
標(biāo)準(zhǔn)包裝： 121
類型： ADC 驅(qū)動器
應(yīng)用： 數(shù)據(jù)采集
安裝類型： 表面貼裝
封裝/外殼： 16-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 16-QFN-EP（3x3）
包裝： 管件
產(chǎn)品目錄頁面： 1323 (CN2011-ZH PDF)
LTC6404
22
6404f
APPLICATIONS INFORMATION
According to Figure 4, the input impedance looking into
the differential amp (RINM) reects the single ended source
case, thus:
R
RR
INM
I
F
IF
=
+
1
2
–
R2 is chosen to balance R1 || RS:
R
RR
IS
2 =
+
Input Common Mode Voltage Range
The LTC6404’s input common mode voltage (VICM) is
dened as the average of the two input voltages, VIN+, and
VIN–. It extends from V– to 1.4V below V+. The operating
input common mode range depends on the circuit con-
guration (gain), VOCM and VCM (Refer to Figure 5). For
fully differential input applications, where VINP = –VINM,
the common mode input voltage is approximately:
V
VV
V
R
RR
V
R
ICM
IN
OCM
I
IF
CM
F
=
+
≈
+
+
–
2
++
RI
With singled ended inputs, there is an input signal com-
ponent to the input common mode voltage. Applying only
VINP (setting VINM to zero), the input common voltage is
approximately:
V
VV
V
R
RR
V
R
ICM
IN
OCM
I
IF
CM
F
=
+
≈
+
+
–
2
++
+
R
VR
RR
I
INP
F
FI
2
Output Common Mode Voltage Range
The output common mode voltage is dened as the aver-
age of the two outputs:
VV
OUTCM
OCM
OUT
==
+
–
2
The VOCM pin sets this average by an internal common
mode feedback loop which internally forces VOUT+=–VOUT–.
The output common mode range extends from 1.1V above
V– to 1V below V+ (see the Electrical Characteristics table
for the LTC6404-4 output common mode voltage range).
The VOCM pin sits in the middle of a voltage divider which
sets the default mid-supply open circuit potential.
Figure 5. Circuit for Common Mode Range
V–
V+
0.1μF
VCM
–
+
1
SHDN
5
6
IN–
7
OUT+
8
OUTF+
16
15
IN+
NC
14
OUT–
13
OUTF–
VOUTF
–
RF
VOUTF
+
VOUT
–
VOUT
+
2
V+
3
V–
V+
V–
V+
V–
4
VOCM
VSHDN
VVOCM
VOCM
12
V–
11
V+
10
V+
9
V–
6404 F05
LTC6404
SHDN
0.1μF
0.01μF
RF
RI
+
–
VINP
–
+
VINM
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC6404CUD-1-TRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:600MHz, Low Noise, High Precision Fully Differential Input/Output Amplifi er/Driver
LTC6404CUD-2#PBF 功能描述:IC AMP/DRIVER DIFF 16-QFN RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:60 系列:- 類型:可變增益放大器 應(yīng)用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-TQFN-EP（5x5） 包裝:托盤
LTC6404CUD-2#TRPBF 功能描述:IC AMP/DRIVER DIFF 16-QFN RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:60 系列:- 類型:可變增益放大器 應(yīng)用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-TQFN-EP（5x5） 包裝:托盤
LTC6404CUD-2-PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:600MHz, Low Noise, High Precision Fully Differential Input/Output Amplifi er/Driver
LTC6404CUD-2-TRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:600MHz, Low Noise, High Precision Fully Differential Input/Output Amplifi er/Driver
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