參數(shù)資料
型號(hào)： U4255BM-AFN
英文描述： AM/FM Receiver Circuit
中文描述： 調(diào)幅/調(diào)頻接收機(jī)電路
文件頁數(shù)： 7/14頁
文件大小： 139K
代理商： U4255BM-AFN
U4255BM
Rev. A2, 11-Oct-00
7 (14)
Bus Control
The operating mode is set by the Bits 92 and 93.
AM/FM/Weather Channel
Bit 93
Bit 92
Standby
0
0
FM
0
1
AM
1
0
Weather band
1
1
The Bits 89 to 91 control gain of the FM IF amplifier.
Gain FM-IF
Bit 91
Bit 90
Bit 89
19 dB
0
0
0
21 dB
0
0
1
23 dB
0
1
0
25 dB
0
1
1
27 dB
1
0
0
28 dB
1
0
1
29 dB
1
1
0
30 dB
1
1
1
Bit 88 switches the search mode on/off.
Station Search
Bit 88
Receive
0
Search
1
Bits 85 to 87 select the search-stop deviation from the
center frequency.
Search-Stop Window
Bit 87
Bit 86
Bit 85
0.5 kHz
0
0
0
1.1 kHz
0
0
1
2.3 kHz
0
1
0
4.8 kHz
0
1
1
10 kHz
1
0
0
20 kHz
1
0
1
40 kHz
1
1
0
80 kHz
1
1
1
In AM mode (Bits 92 and 93), Bits 81 to 83 set the divide
factor of the AM prescaler
Divider
AM Mixer 1
Bit 93
Bit 92
Bit 84
Bit 83
Bit 82
Bit 81
Divide by 10
1
0
x
0
0
0
Divide by 6
1
0
x
0
0
1
Divide by 7
1
0
x
0
1
0
Divide by 8
1
0
x
1
0
0
Divide by 4
1
0
x
1
0
1
In FM mode and in weather band mode (bit 92), the Bits 81
to 84 set the sensitivity of the MNC
Sensitivity
Multipath
Bit 93
Bit 92
Bit 84
Bit 83
Bit 82
Bit 81
Off
x
1
0
0
0
0
Low
x
1
0
0
0
1
x
1
0
0
1
0
x
1
0
0
1
1
x
1
0
1
0
0
x
1
0
1
0
1
x
1
0
1
1
0
Normal
x
1
0
1
1
1
x
1
1
0
0
0
x
1
1
0
0
1
x
1
1
0
1
0
x
1
1
0
1
1
x
1
1
1
0
0
x
1
1
1
0
1
x
1
1
1
1
0
High
x
1
1
1
1
1
Bit 80 switches between narrow band field strength informa-
tion and wide band field strength information.
Field Strength
Narrow Band / Wide Band
Field strength at Pin 16 (wide band)
Bit 80
0
Field strength from AGC (narrow band)
1
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參數(shù)描述
U4255BM-AFNG3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AM/FM Receiver Circuit
U4255BM-M 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AM/FM car receiver IC
U4255BM-MFN 功能描述:IC RCVR AM/FM FRONT-END 44-SSOP RoHS:否 類別:RF/IF 和 RFID >> RF 接收器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 09/Jan/2012 標(biāo)準(zhǔn)包裝:50 系列:* 頻率:850MHz ~ 2.175GHz 靈敏度:- 數(shù)據(jù)傳輸率 - 最大:- 調(diào)制或協(xié)議:- 應(yīng)用:* 電流 - 接收:* 數(shù)據(jù)接口:PCB，表面貼裝 存儲(chǔ)容量:- 天線連接器:PCB，表面貼裝 特點(diǎn):- 電源電壓:4.75 V ~ 5.25 V 工作溫度:0°C ~ 85°C 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤
U4255BM-MFNG3 功能描述:IC RCVR AM/FM FRONT-END 44-SSOP RoHS:是 類別:RF/IF 和 RFID >> RF 接收器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 09/Jan/2012 標(biāo)準(zhǔn)包裝:50 系列:* 頻率:850MHz ~ 2.175GHz 靈敏度:- 數(shù)據(jù)傳輸率 - 最大:- 調(diào)制或協(xié)議:- 應(yīng)用:* 電流 - 接收:* 數(shù)據(jù)接口:PCB，表面貼裝 存儲(chǔ)容量:- 天線連接器:PCB，表面貼裝 特點(diǎn):- 電源電壓:4.75 V ~ 5.25 V 工作溫度:0°C ~ 85°C 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤
U4256BM 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Frequency Synthesizer for Radio Tuning
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