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| 型号： | LTC1966MPMS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 20/38页 |
| 文件大小： | 391K |
| 描述： | IC RMS/DC CONV MICROPWR 8-MSOP |
| 标准包装： | 2,500 |
| 电流 - 电源： | 155µA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 带卷 (TR) |
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LTC1966
20
1966fb
applicaTions inForMaTion
within the filter. Scaling the buffered topology of Figure 13
is simple because the capacitors are in a 10:1:10 ratio.
Scaling the DC accurate topology of Figure 14 can be done
with standard value capacitors; one decade of scaling is
shown in Table 2.
Table 2. One Decade of Capacitor Scaling for Figure 14 with EIA
Standard Values
C
AVE
C
1
= C
2
=
1礔
0.22礔
1.5礔
0.33礔
2.2礔
0.47礔
3.3礔
0.68礔
4.7礔
1礔
6.8礔
1.5礔
Figures 19 and 20 show the settling time versus settling
accuracy for the buffered and DC accurate post filters,
respectively. The different curves represent different scal-
ings of the filters, as indicated by the C
AVE
value. These are
comparable to the curves in Figure 12 (single capacitor
case), with somewhat less settling time for the buffered
post filter, and somewhat more settling time for the DC
accurate post filter. These differences are due to the change
in overall bandwidth as mentioned earlier.
The other difference is the settling behavior of the filters
below the 1% level. Unlike the case of a 1st order filter,
any 3rd order filter can have overshoot and ringing. The
filter designs presented here have minimal overshoot
and ringing, but are somewhat sensitive to component
mismatches. Even the ?2% tolerance of the LTC1966
output impedance can be enough to cause some ringing.
The dashed lines indicate what can happen when ?%
capacitors and ?% resistors are used.
Figure 18. Peak Error vs Input Frequency with DC Accurate Post Filter
Figure 17. Peak Error vs Input Frequency with Buffered Post Filter
INPUT FREQUENCY (Hz)
1
2.0
1.6
1.2
0.8
0.4
10
100
1966 F17
0
1.8
1.4
1.0
0.6
0.2
C = 10礔
C = 4.7礔
C = 2.2礔
C = 1.0礔
C = 0.47礔
C = 0.22礔
C = 0.1礔
INPUT FREQUENCY (Hz)
1
2.0
1.6
1.2
0.8
0.4
10
100
1966 F18
0
1.8
1.4
1.0
0.6
0.2
C = 10礔
C = 4.7礔
C = 2.2礔
C = 1.0礔
C = 0.47礔
C = 0.22礔
C = 0.1礔
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1967CMS8 | 功能描述:IC CONVERTER RMS-DC PREC 8MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - RMS 至 DC 转换器 系列:- 标准包装:46 系列:- 电流 - 电源:1.2mA 电源电压:±18 V，36 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:管件 |
| LTC1967CMS8#PBF | 功能描述:IC CONVERTER RMS-DC PREC 8MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - RMS 至 DC 转换器 系列:- 标准包装:46 系列:- 电流 - 电源:1.2mA 电源电压:±18 V，36 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:管件 |
| LTC1967CMS8#TR | 功能描述:IC CONVERTER RMS-DC PREC 8MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - RMS 至 DC 转换器 系列:- 标准包装:46 系列:- 电流 - 电源:1.2mA 电源电压:±18 V，36 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:管件 |
| LTC1967CMS8#TRPBF | 功能描述:IC CONVERTER RMS-DC PREC 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - RMS 至 DC 转换器 系列:- 标准包装:46 系列:- 电流 - 电源:1.2mA 电源电压:±18 V，36 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:管件 |
| LTC1967CMS8PBF | 制造商:Linear Technology 功能描述:RMS-DC converter, LTC1967 40kHz MSOP |
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