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參數(shù)資料
| 型號： | LTC6605IDJC-14#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FILTER 14MHZ DUAL 22-DFN |
| 標準包裝： | 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 |
| 供應商設(shè)備封裝： | 22-DFN（6x3）裸露焊盤 |
| 包裝： | 管件 |
LTC6605-14
17
660514f
Figure 8. Driving an ADC
660514 F08
3.3V
0.1μF
2.2μF
1μF
BIAS
τ = R (C1 + 2 C2)
CONTROL
ADC
3V
D15
D0
VOCM
VIN
–
+
21
19
AIN
+
AIN
–
VCM
GND
22
18
10nF
2
3
4
1
5
20
C1
C2
R
C1
+
–
1/2 LTC6605-14
CHANNEL A
10Ω
APPLICATIONS INFORMATION
load transient before the acquisition period has ended, for
a valid representation of the input signal. The LTC6605-14
will settle quickly from these periodic load impulses. The
RC network between the outputs of the driver decouples
the sampling transient of the ADC (see Figure 8). The
capacitance serves to provide the bulk of the charge
during the sampling process, while the two resistors at
the outputs of the LTC6605-14 are used to dampen and
attenuate any charge injected by the ADC. The RC lter
gives the additional benet of band limiting broadband
output noise. The selection of the RC time constant is trial
and error for a given ADC, but the following guidelines are
recommended. Choose an RC time constant that is smaller
than the reciprocal of the lter cutoff frequency congured
by the LTC6605-14. Time constants on the order of 2ns
do a good job of ltering broadband noise. Longer time
constants improve SNR at the expense of settling time.
The resistors in the decoupling network should be at least
25Ω. Too large of a resistor will leave insufcient settling
time. Too small of a resistor will not properly dampen the
load transient of the sampling process, prolonging the
time required for settling. In 16-bit applications, this will
typically require a minimum of eleven RC time constants.
The 10Ω resistors at the inputs to the ADC minimize the
sampling transients that charge the RC lter capacitors.
For lowest distortion, choose capacitors with low dielectric
absorption, such as a C0G multilayer ceramic capacitor.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1,000 系列:- 濾波器類型:連續(xù)時間，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)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1,000 系列:- 濾波器類型:連續(xù)時間，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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