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参数资料
| 型号： | LTC6360CMS8E#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 8/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC DRIVER TRUE ZERO 8MSOP |
| 标准包装： | 2,500 |
| 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： | 带卷 (TR) |
LTC6360
16
6360f
applicaTions inForMaTion
caused by the switching of the ADC sampling capacitor.
This momentarily disturbs the output of the amplifier as
charge is transferred between amplifier and ADC. The
amplifier must recover and settle from this load transient
before the acquisition period ends. An RC network at
the output of the LTC6360 helps decouple the sampling
transient of the ADC from the amplifier, reducing the
demands on the amplifier’s output stage (see Figure 9).
TheresistorattheinputoftheADCminimizesthesampling
transients that discharge the RC filter capacitor.
Figure 9. Driving an ADC
eleven RC time constants of a first order filter. Note also
that too small a resistor will not properly dampen the load
transient of the sampling process, prolonging the time
required for settling.
High quality resistors and capacitors should be used for
the RC filter network since these components stabilize
the internal amplifier and can also contribute their own
distortion. For lowest distortion, choose capacitors with
a high quality dielectric, such as a C0G multilayer ceramic
capacitor. Metal film surface mount resistors are more
linear than carbon types.
SHDN
The SHDN pin is 5V TTL or 3.6V CMOS level compatible.
If the SHDN pin (Pin 7) is pulled low, below 0.8V, the
LTC6360 will power down. If the pin is left open or pulled
high, above 2.0V, the part will enter normal active opera-
tion. The turn-on time between the shutdown and active
states is typically 1μs, and turn-off time is typically 0.3s.
In shutdown, the output pin (OUT) appears as an open
collector with a nonlinear capacitor to ground and steer-
ing diodes to VCC and ground. Because of the nonlinear
capacitance, the output will still have the ability to sink and
source small amounts of transient current if exposed to
significant voltage transients. The input protection diodes
between +IN and –IN can still conduct if voltage transients
at the input exceed 700mV.
Noise Considerations
The LTC6360 has a low noise density en of 2.3nV/√Hz.
This is equivalent to the voltage noise of a 320Ω resistor
at the +IN input. For source resistors larger than 320Ω,
voltage noise due to the source resistance will start to
dominate. The current noise density is 3pA/√Hz, thus
source resistors larger than about 770Ω will interact with
the input current noise and result in output noise that is
amplifier current noise dominant.
Note that the parallel combination of gain setting resis-
tors RF and RG behaves like the source resistance, RS, in
noise calculations.
The filter capacitor serves to provide the bulk of the charge
during the sampling process, while the filter resistor
dampens and attenuates any charge injected by the ADC.
The RC filter has the additional benefit of band limiting
broadband output noise.
The selection of the RC time constant depends on the ap-
plication;butgenerally,longertimeconstantswillimprove
SNR at the expense of longer settling time. Excessive
settling time can introduce gain errors and distortion
if the filter components are not perfectly linear. 16-bit
applications typically require a minimum settling time of
ADC
5V
6360 F09
CPO
OUT
10
330pF
0.1F
VCC
RADC
VDD
GND
–IN
CHARGE
PUMP
CPI
LTC6360
SHDN
+IN
5V
0.1F
VIN
0V TO 4V
–
+
1F
+–
10F
5V
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| LTC6360HDD#PBF | 功能描述:IC ADC DRIVER TRUE ZERO 8DFN 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 |
| LTC6360HDD#TRPBF | 功能描述:IC ADC DRIVER TRUE ZERO 8DFN 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 |
| LTC6360HMS8E#PBF | 功能描述:IC ADC DRIVER TRUE ZERO 8MSOP 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 |
| LTC6360HMS8E#TRPBF | 功能描述:IC ADC DRIVER TRUE ZERO 8MSOP 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 |
| LTC6360IDD#PBF | 功能描述:IC ADC DRIVER TRUE ZERO 8DFN 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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