Cxrt2132 Is a Remote Control Coding Chip Based on CMOS Technology, Which Has the Characteristics of High Integration and Low Power Consumption. Its Operating Voltage Range Is 6V to 16V, Which Is Suitable for Various Power Supply Environments. The Chip Has 12 Three-State Address Pins and Supports up to 531441 Address Coding Combinations, Greatly Reducing the Risk of Coding Conflicts and Illegal Interference. In Addition, Cxrt2132 Has Extremely High Noise Suppression Capability and Can Work Stably in Complex Electromagnetic Environment.
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[ CXRT2132 ]"
Introduction
With the increasing popularity of intelligent control and remote security systems, efficient and reliable coding chips have become the core of various electronic devices. As a coding chip specially designed for remote control, CXRT2132 is widely used in automobile safety, smart home, industrial automation and other fields with CXRT2133 decoding chip. This article will comprehensively analyze the performance advantages of CXRT2132 from the aspects of technical features, functional principles, application scenarios and packaging details to help engineers and developers better understand and apply the product.
I. Product overview and technical characteristics
CXRT2132 is a remote control coding chip based on CMOS technology, which has the characteristics of high integration and low power consumption. Its operating voltage range is 6V to 16V, which is suitable for various power supply environments. The chip has 12 three-state address pins and supports up to 531441 address coding combinations, greatly reducing the risk of coding conflicts and illegal interference. In addition, CXRT2132 has extremely high noise suppression capability and can work stably in complex electromagnetic environment.
The main features include:
· Adopt advanced CMOS technology, with low power consumption and stable performance;
Wide voltage working range (6V ~ 16V), strong adaptability;
· Up to 12-bit tri-state address encoding and 6-bit data pin, flexible configuration;
· External single resistance oscillator to simplify circuit design;
· Provide DIP18 and DIP 1000.00G packaging forms for easy integration and installation.
II. Internal structure and pin function
The internal structure of CXRT2132 includes three-state address detection, frequency divider, controller, encoder, oscillator and other modules. Its pin design is scientific and reasonable, supporting multiple addresses and data input. The following are some key pins:
· A0 ~ A11/D0 ~ D5: address and data multiplexing pin, supporting three-state (0, 1, suspended) input;
· /TE: Send the enable terminal, and start the encoding output when the low level is valid;
· OSC1/OSC2: external timing resistor determines the operating frequency of the chip;
· DOUT: encoded signal output terminal, connected to RF transmitter module;
· VCC/VSS: Power supply and ground pin.
The chip provides 1000.00g packages of DIP18 and DIP, which can be selected according to actual needs. Note that CXRT2132 is an electrostatic sensitive device, and anti-static measures should be taken in a dry environment to avoid performance degradation or damage caused by improper operation.
III. Electrical parameters and performance indicators
CXRT2132 performs well in limit parameters and electrical characteristics. The logic power supply voltage range is-0.3V to 16V, and the operating temperature range is-40℃ to 85℃, which is suitable for harsh environments. Under typical operating conditions, the standby current is as low as 0.1 μA, the output current capacity is strong, and various load conditions are supported.
Some electrical parameters are as follows:
·High Level Output Current:-10mA(Vcc = 12V,VOH = 6V);
·Low level output current: 9mA(Vcc = 12V,VOL = 6V);
·Power loss: maximum 300MW.
These parameters ensure the reliability and stability of the chip in long-term operation.
IV. Functional principle and RF working mode
The core function of CXRT2132 is to compile the address and data signal into a specific waveform and output it through the DOUT port. When the/TE pin is low, the chip starts encoding transmission. The encoded waveform includes address/data bit and synchronization bit. Each bit consists of multiple oscillation periods. The waveform structure is accurate, which is convenient for CXRT2133 decoding chip recognition and recovery.
Details of encoding structure:
· Address/data bit: each pulse consists of 2 pulse periods, and each pulse contains 16 oscillation periods;
· Synchronization bit: consists of 4-bit long and 1/8-bit wide pulses for frame synchronization;
· Character Code and frame code: a character code contains 12 addresses/data bits and 1 synchronization bit; A frame code consists of 4 character code to ensure the integrity of data transmission.
The oscillation frequency of the chip is determined by the external resistor, and the decoding frequency of CXRT2133 must be 2.5 to 8 times of the encoding frequency. For example, when the CXRT2132 is connected with an external 4.7mohm resistor, the CXRT2133 should be equipped with 820kohm resistor to achieve the best decoding effect.
V. Typical application circuit
CXRT2132 can be widely used in a variety of remote control scenarios. The following are examples of typical application circuits:
5.1. Ultra-high frequency 4 data transmitting circuit: Applicable to multi-data bit transmission scenarios, such as smart home control;
5.2. Ultra-high frequency 12 address 0 data transmission circuit: Applicable to pure address coding systems, such as garage door remote control;
5.3. Uninterrupted transmitting circuit: Applicable to industrial control systems that require continuous signal output.
These circuits are simple in structure, few peripheral components, and easy to implement and debug. For example, in car security systems, CXRT2132 can be linked with decoders through RF module to unlock doors and trigger alarms.
VI. Packaging and mechanical dimensions
CXRT2132 provides DIP18 and DIP 1000.00G packaging forms, accurate size, in line with international standards. Take DIP18 as an example, its body length (D) is 22.64~23.04mm, width (E) is 6.20~6.60mm, and pin spacing is 2.54mm. The DIP20 package is slightly larger in size and is suitable for more complex circuit layouts. For detailed size parameters, see the package diagram in the data sheet.
VII. Conclusion
CXRT2132 has become an ideal choice in the field of remote control due to its high coding capacity, low power consumption and strong anti-interference capability. Whether it is automotive electronics, smart home or industrial automation, the chip can provide stable and secure coding solutions. Asjtm-ic.comWe are committed to providing customers with high-quality technical support and reliable component supply. Welcome to visit our official website for more details, or contact customer service for samples and technical support.
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