參數(shù)資料
型號(hào)： LTC1966HMS8#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 模擬專(zhuān)用變換器
英文描述： RMS TO DC CONVERTER, PDSO8
封裝： LEAD FREE, PLASTIC, MSOP-8
文件頁(yè)數(shù)： 13/38頁(yè)
文件大?。?/td> 387K
代理商： LTC1966HMS8#PBF
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
CAVE
C1 = C2 =
1F
0.22F
1.5F
0.33F
2.2F
0.47F
3.3F
0.68F
4.7F
1F
6.8F
1.5F
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 CAVE 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
accuratepostfilter.Thesedifferencesareduetothechange
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 ±12% tolerance of the LTC1966
output impedance can be enough to cause some ringing.
The dashed lines indicate what can happen when ±5%
capacitors and ±1% 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
PEAK
ERROR
(%)
–1.6
–1.2
–0.8
–0.4
10
100
1966 F17
0
–1.8
–1.4
–1.0
–0.6
–0.2
C = 10F
C = 4.7F
C = 2.2F
C = 1.0F
C = 0.47F
C = 0.22F
C = 0.1F
INPUT FREQUENCY (Hz)
1
–2.0
PEAK
ERROR
(%)
–1.6
–1.2
–0.8
–0.4
10
100
1966 F18
0
–1.8
–1.4
–1.0
–0.6
–0.2
C = 10F
C = 4.7F
C = 2.2F
C = 1.0F
C = 0.47F
C = 0.22F
C = 0.1F
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參數(shù)描述
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LTC1966IMS8#PBF 功能描述:IC PREC RMS/DC CONV MCRPWR 8MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - RMS 至 DC 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:46 系列:- 電流 - 電源:1.2mA 電源電壓:±18 V，36 V 安裝類(lèi)型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
LTC1966IMS8#TR 功能描述:IC PREC RMS/DC CONV MCRPWR 8MSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - RMS 至 DC 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:46 系列:- 電流 - 電源:1.2mA 電源電壓:±18 V，36 V 安裝類(lèi)型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
LTC1966IMS8#TRPBF 功能描述:IC PREC RMS/DC CONV MCRPWR 8MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - RMS 至 DC 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:46 系列:- 電流 - 電源:1.2mA 電源電壓:±18 V，36 V 安裝類(lèi)型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
LTC1966IMS8PBF 制造商:Linear Technology 功能描述:RMS-to-DC Converter Prec. uPower MSOP8
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