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參數(shù)資料
| 型號(hào)： | 12197-508-XTP |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 調(diào)制器/解調(diào)器 |
| 英文描述： | 1.2 kbps DATA, MODEM, PQCC28 |
| 封裝： | GREEN, PLASTIC, LCC-28 |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 238K |
| 代理商： | 12197-508-XTP |
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Data Sheet
4.4.2 Bias Current Resistor
The A5191HRT requires a bias current resistor to be connected between OCBIAS and VSS. The bias current controls the operating parameters of the internal
operational amplifiers and comparators.
The value of the bias current resistor is determined by the reference voltage IAREF and the following formula:
The recommended bias current resistor is 500K
W when IAREF is equal to 1.235 V
DC
.
In Figure 8 all external capacitor values have a tolerance of ±5 percent and the resistors have a tolerance of ±1 percent, except the 3M
W which has a
tolerance of ±5 percent. External to the A5191HRT, the filter exhibits a three-pole, high-pass filter at 624Hz and a one-pole, low-pass filter at 2500Hz.
Internally, the A5191HRT has a high-pass pole at 35Hz and a low-pass pole at 90kHz. The low-pass pole can vary as much as ±30 percent. The input
impedance of the entire filter is greater than 150M
W at frequencies below 50kHz.
Figure 8: Receive Filter Schematic
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 12197-508-XTP/A5191HRTPG | 制造商:ON Semiconductor 功能描述: |
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| 1-21976-4 | 制造商:TE Connectivity 功能描述:O RING - Bulk 制造商:TE CONNECTIVITY 功能描述:O RING |
| 1219770000 | 功能描述:DRW270220LT 制造商:weidmuller 系列:* 零件狀態(tài):有效 標(biāo)準(zhǔn)包裝:1 |
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