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参数资料
| 型号： | 12197-508-XTD |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 调制器/解调器 |
| 英文描述： | 1.2 kbps DATA, MODEM, PQCC28 |
| 封装： | LEAD FREE, PLASTIC, LCC-28 |
| 文件页数： | 8/11页 |
| 文件大小： | 580K |
| 代理商： | 12197-508-XTD |
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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
相关PDF资料 |
PDF描述 |
|---|---|
| 12197-507-XTD | 1.2 kbps DATA, MODEM, PQFP32 |
| 12197-508-XTD | 1.2 kbps DATA, MODEM, PQCC28 |
| 12197-507-XTD | 1.2 kbps DATA, MODEM, PQFP32 |
| 122-27-5 | PANEL MOUNT, CABLE TERMINATED, FEMALE, TNC CONNECTOR, JACK |
| 12256AD2K-12X408CECC | TOGGLE SWITCH, 3PDT, LATCHED, 4A, 30VDC, THROUGH HOLE-STRAIGHT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 12197-508-XTP/A5191HRTPG | 制造商:ON Semiconductor 功能描述: |
| 12197-509-XTD | 制造商:ON Semiconductor 功能描述:HART 111 MODEM - Tape and Reel |
| 1219760000 | 功能描述:DRW270110LT 制造商:weidmuller 系列:* 零件状态:有效 标准包装:1 |
| 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:* 零件状态:有效 标准包装:1 |
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