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| 型号： | 74LVC1G57GF,132 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 7/15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
18
DS909F1
5.3.3
Output Filter Power Dissipation Considerations
In systems without inductive series elements like inductors or ferrite beads, power losses in the output
filter are equal to the switching losses that occur in the system due to the cyclical charging and discharging
of capacitors connected to the amplifier outputs. In systems that require an inductive series element, con-
ducted losses also occurs due to the series impedance added to the output path.
5.3.3.1
Conduction Losses for All modes of Operation
For all modes of operation (SD, FSD, HD, and FHD) of the CS35L01/03, the conduction losses are gov-
erned by the equation:
Where:
P
= Power dissipated in the series impedance.
I
= RMS AC output current
Z
= impedance of the series element at the frequency of the AC current
This equation neglects any series impedances presented by the PCB traces or speaker wires in the output
path.
5.3.3.2
Switching Losses in SD/FSD Mode
Switching losses in SD/FSD Mode are governed by the equation
Where:
P
= Power dissipated in the capacitor (neglecting parasites).
C
= Value of filtering capacitor
V
= Peak voltage developed across the capacitor
f
= Switching frequency of the outputs
These calculations are straightforward, as the peak voltage is simply the voltage level attached to VBATT,
the capacitor is the value of capacitor that has been added for filtering (neglecting parasitic board capac-
itances), and the frequency is 192 kHz or 76 kHz for SD and FSD, respectively.
5.3.3.3
Switching Losses in HD/FHD.
Many factors affect the switching losses when the device is operated in HD/FHD mode. These factors in-
clude the frequency of the content being amplified, the voltage level of VBATT, and the amplitude of the
output signal will factor into both the voltage presented across the capacitors and the frequency at which
the capacitors are charged or discharged.
Static signals (i.e. sine waves at a fixed amplitude) are easier to consider than are dynamic signals (i.e.
musical content), as they are governed by the same equation as that listed in Section 5.3.3.1 and Section
5.3.3.2 on page 18. Modifications to that equation are limited to the voltage term (V) and the frequency
term (f), depending on whether the static input signal amplitude is causing the output devices to switch at
76 kHz or 192 kHz, and to operate off of the VBATT supply or off of the internally generated LDO.
PI2Z
=
P
1
2
---CV2f
=
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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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