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| 型号： | 74LVC1G57GF,132 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 6/15页 |
| 文件大小： | 0K |
| 描述： | IC CONFIG MULTI-FUNC GATE 6XSON |
| 产品培训模块： | Logic Packages |
| 特色产品： | MicroPak? |
| 标准包装： | 5,000 |
| 系列： | 74LVC |
| 逻辑类型： | 可配置多功能 |
| 电路数： | 1 |
| 输入数： | 3 |
| 施密特触发器输入： | 是 |
| 输出类型： | 单端 |
| 输出电流高，低： | 32mA，32mA |
| 电源电压： | 1.65 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-XFDFN |
| 供应商设备封装： | 6-XSON，SOT891（1x1） |
| 包装： | 带卷 (TR) |
| 其它名称： | 568-9310-2 74LVC1G57GF,132-ND 74LVC1G57GF-H 74LVC1G57GF-H-ND 935282423132 |
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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| 74LVC1G57GF-H | 功能描述:逻辑门 3.3V 1G LOW-P CONFIG MULT FCTN RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
| 74LVC1G57GM | 制造商:NXP Semiconductors 功能描述:IC CONFIG MULTI-FUNC GATE XS |
| 74LVC1G57GM,115 | 功能描述:逻辑门 3.3V LP CONFIG GATE RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
| 74LVC1G57GM,132 | 功能描述:逻辑门 3.3V SINGLE 2CHAN RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
| 74LVC1G57GM/S901,1 | 制造商:NXP Semiconductors 功能描述:74LVC1G57GM/XSON6/REEL7//S901 - Tape and Reel |
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