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參數(shù)資料
| 型號： | TC9402EJD |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 9/28頁 |
| 文件大?。?/td> | 545K |
| 描述： | IC V-FREQ/FREQ-V CONV 14CDIP |
| 標(biāo)準(zhǔn)包裝： | 29 |
| 類型： | 電壓至頻率和頻率至電壓 |
| 頻率 - 最大： | 100kHz |
| 全量程： | ±100ppm/°C |
| 線性： | ±0.25% |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 14-CDIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 14-CERDIP |
| 包裝： | 管件 |
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?2007 Microchip Technology Inc.
DS21483D-page 9
TC9400/9401/9402
3.2 Voltage-to-Time Measurements
The TC9400 output can be measured in the time
domain as well as the frequency domain. Some micro-
computers, for example, have extensive timing capabil-
ity, but limited counter capability. Also, the response
time of a time domain measurement is only the period
between two output pulses, while the frequency
measurement must accumulate pulses during the
entire counter time-base period.
Time measurements can be made from either the
TC9400s PULSE FREQ OUT output, or from the
FREQ/2 OUT output. The FREQ/2 OUT output
changes state on the rising edge of PULSE FREQ
OUT, so FREQ/2 OUT is a symmetrical square wave at
one-half the pulse output frequency. Timing measure-
ments can, therefore, be made between successive
PULSE FREQ OUT pulses, or while FREQ/2 OUT is
high (or low).
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