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參數(shù)資料
| 型號： | TC9402EJD |
| 元件分類： | 模擬專用變換器 |
| 英文描述： | VOLTAGE-FREQUENCY CONVERTER, 0.1 MHz, CDIP14 |
| 封裝： | CERDIP-14 |
| 文件頁數(shù)： | 9/28頁 |
| 文件大小： | 545K |
| 代理商： | TC9402EJD |
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2007 Microchip Technology Inc.
DS21483D-page 17
TC9400/9401/9402
7.0
F/V POWER-ON RESET
In F/V mode, the TC9400 output voltage will occasion-
ally be at its maximum value when power is first
applied. This condition remains until the first pulse is
applied to FIN. In most frequency measurement
applications, this is not a problem because proper
operation begins as soon as the frequency input is
applied.
In some cases, however, the TC9400 output must be
zero at power-on without a frequency input. In such
cases, a capacitor connected from Pin 11 to VDD will
usually be sufficient to pulse the TC9400 and provide a
Power-on Reset (see Figure 7-1 (a) and (b)). Where
predictable power-on operation is critical, a more
complicated circuit, such as Figure 7-1 (b), may be
required.
FIGURE 7-1:
Power-On Operation/Reset.
VDD
14
11
1000 pF
Threshold
Detector
1k
Ω
FIN
VDD
100 k
Ω
1F
3
4
8
6
FIN
1
2
5
16
VCC
B
R
C
Q
VSS
A
CLRA
CD4538
TC9400
(a)
(b)
To TC9400
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| TC9400EJD | VOLTAGE-FREQUENCY CONVERTER, 0.1 MHz, CDIP14 |
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| TC9404FN | SERIAL INPUT LOADING, 1-BIT DAC, PDSO24 |
| TC9404F | 1-BIT DAC, PDSO24 |
| TC9409BF | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
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| TC9404FN | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:MODULATION SYSTEM DA CONVERTER WITH ANALOG FILTER |
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| TC9409BF | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:SINGLE CHIP KARAOKE LSI |
| TC9411 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:CD GRAPHICS DECODER |
| TC9411F | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:CD GRAPHICS DECODER |
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