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| 型號： | SA555S-13 |
| 廠商： | Diodes Inc |
| 文件頁數(shù)： | 2/14頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OSC MONO TIMING SO8 |
| 特色產(chǎn)品： | Precision Timer ICs |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 555 型，計時器/振蕩器（單路） |
| 頻率： | 500kHz |
| 電源電壓： | 4.5 V ~ 16 V |
| 電流 - 電源： | 13mA |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 安裝類型： | 表面貼裝 |
| 其它名稱： | SA555S-13DIDKR |
NE555/SA555/NA555
PRECISION TIMERS
NE555/SA555/NA555
Document number: DS35112 Rev. 4 - 2
10 of 14
February 2012
Diodes Incorporated
NEW
PROD
UC
T
Typical Applications Characteristics (cont.)
Pulse Width Modulation
The operation of the timer can be modified by modulating the internal threshold and trigger voltages, which is accomplished
by applying an external voltage (or current) to CONT. Figure 10 shows a circuit for pulse-width modulation. A continuous
input pulse train triggers the monostable circuit, and a control signal modulates the threshold voltage. Figure 11 shows the
resulting output pulse-width modulation. While a sine-wave modulation signal is shown, any wave shape could be used.
Fig 10. Circuit for Pulse width modulation
Fig 11. Pulse width modulation timing diagrams
Pulse Position Modulation
As shown in Figure 12, any of these timers can be used as a pulse-position modulator. This application modulates the
threshold voltage and, thereby, the time delay, of a free-running oscillator. Figure 13 shows a triangular-wave modulation
signal for such a circuit; however, any wave shape could be used.
Fig 12. Circuit for pulse position modulation
Fig 13. Pulse position modulation timing diagrams
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| SA556 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:GENERAL PURPOSE DUAL BIPOLAR TIMERS |
| SA556D | 功能描述:計時器和支持產(chǎn)品 General Purpose Dual RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| SA556DR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL PRECISION TIMERS |
| SA556DT | 功能描述:計時器和支持產(chǎn)品 General Purpose Dual RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| SA556N | 功能描述:計時器和支持產(chǎn)品 General Purpose Dual RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
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