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T4258 PDF预览

T4258

更新时间: 2024-02-03 11:38:18
品牌 Logo 应用领域
爱特美尔 - ATMEL /
页数 文件大小 规格书
17页 145K
描述
AM/FM Receiver IC

T4258 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:SSOP, SOP44,.4,32Reach Compliance Code:unknown
风险等级:5.92解调类型:AM/FM
JESD-30 代码:R-PDSO-G44JESD-609代码:e0
湿度敏感等级:1端子数量:44
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装等效代码:SOP44,.4,32封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH电源:8.5 V
认证状态:Not Qualified子类别:Other Consumer ICs
最大压摆率:65 mA表面贴装:YES
技术:BICMOS温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.8 mm端子位置:DUAL
Base Number Matches:1

T4258 数据手册

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T4258  
AM/FM Receiver IC  
Description  
The T4258 is an integrated AM/FM frontend circuit in can be built together with the PLL U4256BM. This ICs  
BICMOS technology. It contains a double conversion are designed for high performance car radio applications.  
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  
Electrostatic sensitive device.  
Observe precautions for handling.  
FD eRaetcueirveinsg condition analyzer  
D Soft mute and multipath noise cancellation  
D AM up-/down conversion system  
D AM stereo capability  
D Integrated band filter for 2nd IF;  
with software controlled bandwidth  
D Pin compatible with U4255BM  
D FM-double conversion system  
D Stop signal generation for AM and FM  
D Automatic alignment possible  
D 3-wire bus controlled  
D World tuner, US Weatherband, J-band  
D Completely integrated FM demodulator  
Block Diagram  
V3  
IF1OUT MX2IN  
IF1FMI  
38  
IF1AMI  
33  
MX2OB  
IF1REF  
39  
MX1OA MX1OB  
MX2OA IF2IN V3P  
44  
43  
29  
24  
28  
27  
30  
26  
23  
AM  
AM  
Dem.  
OPLPF  
32  
FM  
41  
IFAGCL  
IFAGCH  
AGC  
MX1AMA  
MX1AMB  
36  
35  
AM  
3
7
V3  
AMAGC  
AMVREG  
AMPLPF  
AGC  
IF2OUT  
FILADJ  
6
8
Noise–  
blanker  
20  
37  
Automatic  
Adjustment  
AGC  
MX1FMA  
MX1FMB  
GNDMX  
1
FM  
Multi–  
path  
MULTIP  
MPX  
2
4
40  
Divider  
2...10  
OSCOUT  
Offset  
FM  
Dem.  
Soft  
Mute  
16  
Adj.  
Chan.  
Stop  
11  
Divider  
OSC  
GNDOSC  
OSCE  
15  
14  
13  
V3  
Bandgap  
Dev.  
Ana.  
Bus  
INT  
21  
INT  
OSCB  
22  
10  
34  
31  
DEV  
19  
DATA METER  
12 25 42  
5
17 18  
EN  
9
V57  
VS  
MX2LO ADJAC  
SMUTE  
GND  
FMAGC  
CLK  
Figure 1. Block diagram  
Ordering Information  
Extended Type Number  
Package  
Remarks  
T4258-ILQ  
SSO44  
SSO44  
Taped and reeled  
Tube  
T4258-ILS  
Rev. A1, 10-Jan-01  
1 (17)  

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