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| 型號(hào)： | MC13110AFB |
| 廠商： | MOTOROLA INC |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| 中文描述： | TELECOM, CORDLESS, RF AND BASEBAND CIRCUIT, PQFP52 |
| 封裝： | PLASTIC, QFP-52 |
| 文件頁(yè)數(shù)： | 53/68頁(yè) |
| 文件大?。?/td> | 1316K |
| 代理商： | MC13110AFB |
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MC13110A/B MC13111A/B
53
MOTOROLA ANALOG IC DEVICE DATA
Carrier Detect Threshold Programming
The “CD Out” pin gives an indication to the microprocessor
if a carrier signal is present on the selected channel. The
nominal value and tolerance of the carrier detect threshold is
given in the carrier detect specification section of this
document. If a different carrier detect threshold value is
desired, it can be programmed through the MPU interface as
shown in Figure 126 below. Alternately, the carrier detect
threshold can be electronically adjusted during final test of
the telephone to reduce the tolerance of the carrier detect
threshold. This is done by measuring the threshold and then
by adjusting the threshold through the MPU interface. In this
case, it is necessary to store the carrier detect register value
in ROM so that the CD register can be reloaded each time the
combo IC is powered up. If a preamp is used before the first
mixer it may be desirable to scale the carrier detect range by
connecting an external resistor from the “RSSI” pin to
ground. The internal resistor is 187 k
.
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CD
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CD
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CD
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CD
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CD
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Carrier Detect
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0
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0
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16
–4 dB
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–3 dB
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21
1 dB
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22
2 dB
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1
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24
4 dB
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1
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1
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26
6 dB
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7 dB
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1
1
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29
9 dB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC13110AFTA | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110BFB | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13111AFB | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110BFTA | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13111AFTA | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC13110AFTA | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110BFB | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110BFTA | 制造商:Motorola 功能描述:MOTOROLA 9942 |
| MC13111AFB | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13111AFTA | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:UNIVERSAL CORDLESS TELEPHONE SUBSYSTEM IC |
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