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ATR4256-TKSY PDF预览

ATR4256-TKSY

更新时间: 2024-01-15 23:44:20
品牌 Logo 应用领域
爱特美尔 - ATMEL 信号电路锁相环或频率合成电路光电二极管信息通信管理异步传输模式ATM
页数 文件大小 规格书
21页 504K
描述
Frequency Synthesizer for Radio Tuning

ATR4256-TKSY 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SSOP, SSOP20,.25
针数:20Reach Compliance Code:unknown
HTS代码:8542.39.00.01风险等级:5.82
Is Samacsys:N模拟集成电路 - 其他类型:PLL FREQUENCY SYNTHESIZER
JESD-30 代码:R-PDSO-G20JESD-609代码:e3
长度:6.625 mm湿度敏感等级:1
功能数量:1端子数量:20
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:SSOP20,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH电源:8.5 V
认证状态:Not Qualified座面最大高度:1.45 mm
子类别:PLL or Frequency Synthesis Circuits最大供电电流 (Isup):25 mA
最大供电电压 (Vsup):12 V最小供电电压 (Vsup):8 V
标称供电电压 (Vsup):8.5 V表面贴装:YES
技术:BICMOS温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn) - annealed端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
宽度:4.4 mmBase Number Matches:1

ATR4256-TKSY 数据手册

 浏览型号ATR4256-TKSY的Datasheet PDF文件第2页浏览型号ATR4256-TKSY的Datasheet PDF文件第3页浏览型号ATR4256-TKSY的Datasheet PDF文件第4页浏览型号ATR4256-TKSY的Datasheet PDF文件第5页浏览型号ATR4256-TKSY的Datasheet PDF文件第6页浏览型号ATR4256-TKSY的Datasheet PDF文件第7页 
Features  
Reference Oscillator up to 15 MHz (Tuned)  
Oscillator Buffer Output (for AM Up/Down Conversion)  
Two Programmable 16-bit Dividers  
Fine-tuning Steps Possible  
Fast Response Time Due to Integrated Loop Push-pull Stage  
3-wire Bus (Enable, Clock and Data; 3V and 5V Microcontrollers Acceptable)  
Four Programmable Switching Outputs (Open Drain)  
Three DACs for Software Controlled Tuner Alignment  
Low-power Consumption  
Frequency  
High Signal to Noise Ratio (SNR)  
Synthesizer for  
Radio Tuning  
Integrated Band Gap – Only One Supply Voltage Necessary  
1. Description  
The ATR4256 is a synthesizer IC for FM receivers and an AM up-conversion system  
in BiCMOS technology. Together with the AM/FM IC ATR4258 or ATR4255, it com-  
prises a complete AM/FM car radio front-end, which is also recommended for RDS  
(Radio Data System) applications. It is controlled by a 3-wire bus and also contains  
switches and Digital to Analog Converters (DACs) for software-controlled alignment of  
the AM/FM tuner. The ATR4256 is the pin-compatible successor IC of U4256BM-R.  
ATR4256  
Figure 1-1. Block Diagram  
SWO1 SWO2 SWO3 SWO4  
7
8
9
10  
Tuning  
13  
12  
OSCIN  
Oscillator  
Switching outputs  
DAC3  
3-bit  
OSCOUT  
5
DAC3  
V
15  
Ref  
OSC  
MX2LO  
buffer  
DAC2  
4
3
DAC2  
DAC1  
17  
16  
18  
CLK  
DATA  
EN  
3-wire  
bus  
interface  
DAC1  
R-  
divider  
DAC  
AM/FM  
V
Ref  
1
2
19  
FM-  
preamp  
N-  
divider  
Phase  
detector  
Current  
sources  
FMOSCIN  
PDO  
PD  
Band gap  
6
20  
14  
11  
GNDAN  
V5  
GND  
VS  
4867D–AUDR–01/08  

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