PT2240是台灣普誠公司（Princeton Technology Corp）推出的CMOS遙控編碼晶片，主要套用於防盜報警、汽車安防、門禁控制等無線射頻系統。其採用8引腳SOP或DIP封裝，工作電壓1.8~15V，支持220種地址編碼及4個數據位，通過單電阻振盪器生成編碼信號，具備低功耗和高抗干擾特性。
該晶片通過地址碼與數據位的組合生成調製波形，適配315MHz/433MHz頻段遙控場景，兼容EV1527、PT2262等主流遙控編碼方案。支持一次性編程工藝，提供百萬級編碼組合，並可減少庫存型號壓力。配套解碼晶片如IM6300、ZWD831可自適應其振盪電阻參數，廣泛套用在機車報警器、智慧型家居遙控器等設備中。
基本介紹
- 中文名：PT2240
- 類型：遙控編碼晶片
DESCRIPTION
PT2240B is encoder utilizing CMOS Technology specially designed for remote control applications. It
has 220 Address. It can support up to 4 Data Bits and is housed in 8 pin SOP package. It encodes
address and data codes into a coded waveform suitable for RF modulation. The pin assignments and
application circuit are optimized for easy PCB Layout and cost saving advantage. Furthermore,
PT2240B’s intrinsic feature of being able to support 4 data bits considerably reduces inventory
pressures.
FEATURES
· CMOS technology
· Low power consumption
· Least external components
· High noise immunity
· Single resistor oscillator
· Operating voltage: 1.8~15V
· 4 Data pins
· 220 address codes
· Available in SOP package
· Reduction of inventory pressures
APPLICATIONS
· Burglar alarm system
· Car security system
· Car/Garage door controller
· Home/Office security system
· Personal alarm system
它與eV1527實現的功能相同，在使用成熟上，eV1527較早。並且它們的腳位順序是相反！
