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| 型号： | LTC6405CMS8E#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 14/26页 |
| 文件大小： | 0K |
| 描述： | IC AMP/DRVR DIFF R-R 5V 8-MSOP |
| 标准包装： | 50 |
| 类型： | ADC 驱动器 |
| 应用： | 数据采集 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 8-MSOP-EP |
| 包装： | 管件 |
| 产品目录页面： | 1323 (CN2011-ZH PDF) |
LTC6405
21
6405fb
For more information www.linear.com/6405
Interfacing the LTC6405 to A/D Converters
Rail-to-rail input and fast settling time make the LTC6405
ideal for interfacing to low voltage, single supply, differ-
ential input ADCs. The sampling process of ADCs create
a sampling glitch caused by switching in the sampling
capacitorontheADCfrontendwhichmomentarily“shorts”
theoutputoftheamplifieraschargeistransferredbetween
the amplifier and the sampling capacitor. The amplifier
must recover and settle from this load transient before
this acquisition period ends for a valid representation of
the input signal. In general, the LTC6405 will settle much
more quickly from these periodic load impulses than from
a 2V input step, but it is a good idea to place an R-C filter
network between the differential outputs of the LTC6405
andtheinputoftheADCtohelpabsorbthechargeinjection
that comes out of the ADC from the sampling process.
The capacitance of the filter network serves as a charge
reservoir to provide high frequency charging during the
sampling process, while the resistors of the filter network
are used to dampen and attenuate any charge kickback
from the ADC. The selection of the R-C time constant is
trial and error for a given ADC, but the following guidelines
are recommended: Choosing too large of a resistor in the
decoupling network leaving insufficient settling time will
create a voltage divider between the dynamic input imped-
ance of the ADC and the decoupling resistors. Choosing
too small of a resistor will possibly prevent the resistor
from properly dampening the load transient caused by
the sampling process, prolonging the time required for
settling. In 16-bit applications, this will typically require
a minimum of 11 R-C time constants. It is recommended
that the capacitor chosen have a high quality dielectric
(such as C0G multilayer ceramic).
applications inForMation
Figure 12. Interfacing the LTC6405 to an ADC
0.1F
–
+
1
SHDN
5
6
–IN
7
+OUT
8
+OUTF
16
15
+IN
NC
14
–OUT
13
–OUTF
+INA
–INA
200
2
V+
3
V–
V+
V–
5V
VOCM
12
V–
11
V+
10
V+
9
V–
6405 F12
LTC6405
LTC2208
VIN, 2VP-P
SHDN
200
100
200
0.1F
20
5V
4
0.1F
CONTROL
GND VDD
VCM
D15
D0
0.1F
4.7pF
3.3V
1F
VTIP
1.8pF
1.25pF
50
2.2F
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC6405CMS8E-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:2.7GHz, 5V, Low Noise, Rail-to-Rail Input Differential Amplifi er/Driver |
| LTC6405CUD | 制造商:Linear Technology 功能描述:DIFF AMP 5V 2.7GHZ R/R 16QFN 制造商:Linear Technology 功能描述:DIFF AMP, 5V, 2.7GHZ, R/R, 16QFN |
| LTC6405CUD#PBF | 功能描述:IC DIFF AMP/DRIVER R-R 16-QFN RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 专用 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:60 系列:- 类型:可变增益放大器 应用:CATV 安装类型:表面贴装 封装/外壳:20-WQFN 裸露焊盘 供应商设备封装:20-TQFN-EP（5x5） 包装:托盘 |
| LTC6405CUD#TR | 制造商:Linear Technology 功能描述:DIFF-AMPLIFIER, 2.7GHZ, 690V/US, QFN-16, No. of Amplifiers:1, Input Offset Voltage:6mV, Bandwidth:2.7GHz, Amplifier Case Style:QFN, No. of Pins:16, Supply Voltage Range:4.5V to 5.25V, Slew Rate:690V/s, Supply Current:18mA, MSL:- , RoHS Compliant: No |
| LTC6405CUD#TRPBF | 功能描述:IC DIFF AMP/DRIVER R-R 16-QFN RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 专用 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:60 系列:- 类型:可变增益放大器 应用:CATV 安装类型:表面贴装 封装/外壳:20-WQFN 裸露焊盘 供应商设备封装:20-TQFN-EP（5x5） 包装:托盘 |
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