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參數(shù)資料
| 型號(hào)： | LTC6605IDJC-14#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 2/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FILTER 14MHZ DUAL 22-DFN |
| 標(biāo)準(zhǔn)包裝： | 61 |
| 濾波器類型： | 抗混迭 |
| 頻率 - 截止或中心： | 5MHz |
| 濾波器數(shù)： | 2 |
| 濾波器階數(shù)： | 2nd |
| 電源電壓： | 2.7 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 22-WFDFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 22-DFN（6x3）裸露焊盤 |
| 包裝： | 管件 |
LTC6605-14
10
660514f
Functional Description
The LTC6605-14 is designed to make the implementation
of high frequency fully differential ltering functions very
easy. Two very low noise ampliers are surrounded by
precision matched resistors and precision matched capaci-
tors enabling various lter functions to be implemented by
hard wiring pins. The ampliers are wide band, low noise
and low distortion fully differential ampliers with accurate
output phase balancing. They are optimized for driving
low voltage, single-supply, differential input analog-to-
digital converters (ADCs). The LTC6605-14 operates with
a supply voltage as low as 2.7V and accepts inputs up to
325mV below the V– power rail, which makes it ideal for
converting ground referenced, single-ended signals into
differential signals that are referenced to the user-supplied
common mode voltage. This is ideal for driving low volt-
age, single-supply, differential input ADCs. The balanced
differential nature of the amplier and matched surround-
ing components provide even-order harmonic distortion
cancellation, and low susceptibility to common mode
noise (like power supply noise). The LTC6605-14 can be
operated with a single-ended input and differential output,
or with a differential input and differential output.
The outputs of the LTC6605-14 can swing rail-to-rail.
They can source or sink a transient 70mA of current. Load
capacitances should be decoupled with at least 25Ω of
series resistance from each output.
Filter Frequency Response and Gain Adjustment
Figure 3 shows the lter architecture. The Laplace transfer
function can be expressed in the form of the following
generalized equation for a 2nd order lowpass lter:
VOUT(DIFF)
VIN(DIFF)
=
GAIN
1+
s
2πfO Q
+
s2
2πfO
()
2
,
with GAIN, fO and Q as given in Figure 3.
Note that GAIN and Q of the lter are based on component
ratios, which both match and track extremely well over
temperature. The corner frequency fO of the lter is a
function of an RC product. This RC product is trimmed to
±1% and is not expected to drift by more than ±1% from
nominal over the entire temperature range –40°C to 85°C.
As a result, fully differential lters with tight magnitude,
phase tolerance and repeatability are achieved.
Various values for resistors R1 and R4 can be formed
by pin-strapping the internal 100Ω and 200Ω resis-
tors, and optionally by including one or more external
resistors. Note that non-zero source resistance should be
combined with, and included in, R1.
Figure 3. Filter Architecture and Equations
APPLICATIONS INFORMATION
–
+
–
VOUT(DIFF)
660514 F03
VIN(DIFF)
R2
200Ω
R2
200Ω
R3
125Ω
R3
125Ω
R1
R4 = R4A + R4B + REXT
REXT
R4A
R4B
C1
48.2pF
C1
48.2pF
C2
81.5pF
C2
81.5pF
–
+
–
+
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相關(guān)代理商/技術(shù)參數(shù) |
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| LTC6605IDJC-14-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Matched 14MHz Filter with Low Noise, Low Distortion Differential Amplifi er |
| LTC6605IDJC-7#PBF | 功能描述:IC FILTER 7MHZ DUAL 22-DFN RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| LTC6605IDJC-7#TRPBF | 功能描述:IC FILTER 7MHZ DUAL 22-DFN RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| LTC6605IDJC-7-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Matched 7MHz Filter with Low Noise, Low Distortion Differential Amplifi er |
| LTC6605IDJC-7-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Matched 7MHz Filter with Low Noise, Low Distortion Differential Amplifi er |
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