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參數(shù)資料
| 型號： | 74LVC1G57GV,125 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 6/15頁 |
| 文件大小： | 0K |
| 描述： | IC CONFIG MULTI-FUNC GATE SC-74 |
| 產(chǎn)品培訓(xùn)模塊： | Logic Packages |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | 74LVC |
| 邏輯類型： | 可配置多功能 |
| 電路數(shù)： | 1 |
| 輸入數(shù)： | 3 |
| 施密特觸發(fā)器輸入： | 是 |
| 輸出類型： | 單端 |
| 輸出電流高，低： | 32mA，32mA |
| 電源電壓： | 1.65 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SC-74，SOT-457 |
| 供應(yīng)商設(shè)備封裝： | 6-TSOP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 840 (CN2011-ZH PDF) |
| 其它名稱： | 568-4835-6 |
CS35L01/03
DS909F1
17
AV = Original gain of the device being used (See “Electrical Characteristics - All Operational Modes” on
page 9 for this value.)
5.3
Output Filtering with the CS35L01/03
The CS35L01/03 is specifically designed to minimize radiated electromagnetic interference (EMI) signals.
All of the devices are capable of meeting all stated data sheet performance numbers with no special filtering
required. Additionally, the device has shown to be below the compliance limits of both FCC and CISPR test-
ing with no external filtering required.
Ultimately, compliance with any radiated emissions requirements depends significantly on the entire system
under test. In applications where system-level trade-offs such as compromised component layout or lengthy
speaker wires have increased emissions levels, a passive output filter can be added to the outputs of the
device in order to decrease EMI levels.
5.3.1
Reduced Filter Order with the CS35L01/03
In applications which require an output filter, the unique design of the CS35L01/03 allows a much smaller,
less expensive output filter to be used than what is normally found in Class-D amplifiers. In contrast to a
second order filter implemented with a series inductive element (traditional inductor or ferrite beads) and
a shunt capacitive element, basic filtering for the CS35L01/03 is accomplished by a single-order capaci-
tive element attached to the OUTx terminals. This is highlighted in Figure 5 below. Of course, if the system
requires more aggressive filtering, a ferrite bead can be added in series with the outputs to further atten-
uate system level noise.
5.3.2
Filter Component Selection
Usually, the need for output filtering is determined after the system under test has failed EMI testing. Dur-
ing this testing, problem frequencies are easily identified by the peaks which appear in the spectral plots
gathered in the EMI testing.
Selection of the filter components should ensure that shunt elements (i.e. CFILT in Figure 5) present a very
low impedance at the frequency corresponding to the tallest peak in the spectral plot. If needed, series
components such as ferrite beads (i.e. LFILT in Figure 5) should be chosen to present a very high imped-
ance at the frequency corresponding to the tallest peak in the spectral plot.
Careful attention should be paid to the current-carrying capabilities of any included ferrite beads and the
impedance of the ferrite beads in the audio band. A proper trade-off in ferrite bead selection is one that
allows the ferrite bead to sufficiently attenuate the problematic high-frequency emissions without compro-
mising audio performance.
CFILT
Traditional 2nd Order Optional Filter
CS35L01/03’s Minimized Optional Filter
OUT+
OUT-
CFILT
x
LFILT
OUT+
OUT- x
x
Figure 5. Optional Output Filter Components
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| 74LVC1G57GW | 制造商:NXP Semiconductors 功能描述:IC CONFIG MULTI-FUNC GATE XSON6 制造商:NXP Semiconductors 功能描述:IC, CONFIG MULTI-FUNC GATE, XSON6 制造商:NXP Semiconductors 功能描述:IC, CONFIG MULTI-FUNC GATE, XSON6, Logic Type:Configurable Multiple Function, Output Current:32mA, No. of Inputs:3, Supply Voltage Min:1.65V, Supply Voltage Max:5.5V, Logic Case Style:SOT-363, No. of Pins:6, Operating Temperature , RoHS Compliant: Yes |
| 74LVC1G57GW,125 | 功能描述:邏輯門 3.3V LP CONFIG GATE RoHS:否 制造商:Texas Instruments 產(chǎn)品:OR 邏輯系列:LVC 柵極數(shù)量:2 線路數(shù)量（輸入/輸出）:2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel |
| 74LVC1G57GW125 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
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