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T2525N138-DDW PDF预览

T2525N138-DDW

更新时间: 2024-11-13 21:20:39
品牌 Logo 应用领域
爱特美尔 - ATMEL 电信电信集成电路
页数 文件大小 规格书
13页 169K
描述
Telecom Circuit, 1-Func, CMOS, WAFER-10

T2525N138-DDW 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:WAFER包装说明:DIE, DIE OR CHIP
针数:10Reach Compliance Code:compliant
HTS代码:8542.39.00.01风险等级:5.66
JESD-30 代码:R-XUUC-N10湿度敏感等级:1
功能数量:1端子数量:10
最高工作温度:85 °C最低工作温度:-25 °C
封装主体材料:UNSPECIFIED封装代码:DIE
封装等效代码:DIE OR CHIP封装形状:RECTANGULAR
封装形式:UNCASED CHIP峰值回流温度(摄氏度):225
电源:5 V认证状态:Not Qualified
子类别:Other Telecom ICs标称供电电压:5 V
表面贴装:YES技术:CMOS
电信集成电路类型:TELECOM CIRCUIT温度等级:COMMERCIAL EXTENDED
端子形式:NO LEAD端子位置:UPPER
处于峰值回流温度下的最长时间:NOT SPECIFIEDBase Number Matches:1

T2525N138-DDW 数据手册

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Features  
No external components except PIN diode  
Supply-voltage range: 4.5 V to 5.5 V  
Automatic sensitivity adaptation (AGC)  
Automatic strong signal adaptation (ATC)  
Enhanced immunity against ambient light disturbances  
Available for carrier frequencies between 30 kHz to 76 kHz; adjusted by Zener diode  
fusing  
TTL and CMOS compatible  
Suitable min. burst length 6 or 10 pulses/burst  
IR Receiver  
ASSP  
Applications  
Audio video applications  
Home appliances  
Remote control equipment  
T2525  
Description  
The IC T2525 is a complete IR receiver for data communication developed and opti-  
mized for use in carrier-frequency-modulated transmission applications. Its function  
can be described using the block diagram (see figure 1). The input stage meets two  
main functions. First, it provides a suitable bias voltage for the PIN diode. Secondly,  
the pulsed photo-current signals are transformed into a voltage by a special circuit  
which is optimized for low-noise applications. After amplification by a controlled gain  
amplifier (CGA), the signals have to pass a tuned integrated narrow bandpass filter  
with a center frequency f0 which is equivalent to the chosen carrier frequency of the  
input signal. The demodulator is used to convert the input burst signal into a digital  
envelope output pulse and to evaluate the signal information quality, i.e. unwanted  
pulses will be suppressed at the output pin. All this is done by means of an integrated  
dynamic feedback circuit which varies the gain as a function of the present environ-  
mental condition (ambient light, modulated lamps etc.). Other special features are  
used to adapt to the current application to secure best transmission quality. The  
T2525 operates in a supply-voltage range of 4.5 V to 5.5 V.  
Block Diagram  
Figure 1.  
VS  
IN  
OUT  
CGA &  
filter  
µC  
Input  
Demodulator  
AGC / ATC & digital  
control  
Oscillator  
Carrier frequency f  
0
Modulated IR signal  
min 6/10 pulses  
GND  
Rev. A3, 17-Oct-01  
1 (13)  
Preliminary Information  

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