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參數資料
| 型號： | U4255BM-AFNG3 |
| 英文描述： | AM/FM Receiver Circuit |
| 中文描述： | 調幅/調頻接收機電路 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 139K |
| 代理商： | U4255BM-AFNG3 |
U4255BM
Rev. A2, 11-Oct-00
1 (14)
AM/FM Receiver IC
Description
The U4255BM is an integrated AM/FM front end circuit
in BICMOS technology. It contains a double conversion
system for FM and an up/down conversion circuit
for AM (IF1 = 10.7 MHz, IF2 = 450 kHz). A complete
automatically aligned high performance AM/FM tuner
Features
FM-double conversion system
can be built together with the PLL U4256BM. This ICs
are designed for high performance car radio applications.
Electrostatic sensitive device.
Observe precautions for handling.
Integrated second IF filter with software controlled
bandwidth
Completely integrated FM demodulator
Soft mute and multipath noise cancellation
Receiving condition analyzer
Block Diagram
AM up/down conversion system
AM preamplifier with AGC and stereo capability
3-wire bus controlled
Stop signal generation for AM and FM
Automatic alignment possible
30 29
MX2IN
MX2OB
AM
4
3
2
7
6
41
26
23
AMAGC
AMVREG
MX1AMA
MX1AMB
GNDMX
MX1FMB
AMPLPF
MX1OA
IF1FMI
8
43
38
MX2OA
IF2IN
V3P
IF2OUT
24
28
27
20
IF1REF
IF1AMI
IF1OUT
V3
39
33
AGC
15
16
14
1
MX1FMA
OSCOUT
GNDOSC
OSCE
13
OSCB
MX1OB
44
FM
Divider
AM
FM
OSC
AGC
V3
Bus
FMAGC
EN
CLK
DATA
17 18 19
5
Bandgap
METER
V57
GND
VS
12 25 42
9
V3
ADJAC
MX2LO
22
10
DEV
INT
MULTIP
SMUTE
21
40
34
31
INT
Adj.
chan.
Stop
Multi–
path
AGC
AM
dem.
32
36
35
37
11
OPLPF
IFAGCL
IFAGCCH
FMADJ
MPX
Automatic
adjustment
Soft
mute
Dev.
ana.
FM
dem.
Figure 1. Block diagram
Ordering Information
Extended Type Number
U4255BM-AFN
U4255BM-AFNG3
Package
SSO44
SSO44
Remarks
Tube
Taped and reeled
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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:- 產品培訓模塊:Lead (SnPb) Finish for COTS 產品變化通告:Product Discontinuation 09/Jan/2012 標準包裝:50 系列:* 頻率:850MHz ~ 2.175GHz 靈敏度:- 數據傳輸率 - 最大:- 調制或協議:- 應用:* 電流 - 接收:* 數據接口:PCB，表面貼裝 存儲容量:- 天線連接器:PCB，表面貼裝 特點:- 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 供應商設備封裝: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:- 產品培訓模塊:Lead (SnPb) Finish for COTS 產品變化通告:Product Discontinuation 09/Jan/2012 標準包裝:50 系列:* 頻率:850MHz ~ 2.175GHz 靈敏度:- 數據傳輸率 - 最大:- 調制或協議:- 應用:* 電流 - 接收:* 數據接口:PCB，表面貼裝 存儲容量:- 天線連接器:PCB，表面貼裝 特點:- 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 供應商設備封裝: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 |
| U4256BM-AFS | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Frequency Synthesizer for Radio Tuning |
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