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Your locationú║HOME >> Product Center
Nameú║ WS2811 IC
Modelú║ WS2811
Specú║ WS2811 IC,SOP8
Descriptionú║
WS2811 IC Datasheet download address: https://www.box.com/s/3cmq2od6qha0195w75z1

í˝ Output port pressure 12 V.
í˝ Built-chip regulator, 24V only series resistance of the following power supply terminal to the IC the VDD pin, no external regulator.Grayscale adjustment circuit (256-color adjustable).
í˝ built-in signal shaping circuit, after any one IC signal is received.
í˝ a variety of other LED lighting products.
í˝ waveform shaping output, to ensure that the line waveform distortion may not add up.
í˝ Built-in power-on reset and brown-out reset circuit.
í˝ PWM control side can achieve 256 adjustment, scanning frequency of 2.5KHz.
í˝ Serial Interface cascade interface, through a signal line to complete the data reception and decoding.
í˝ any two pass transmission distance over 20 m without increasing any circuit.
í˝ Data transmission speed up to 400Kbps and 800Kbps two modulus
 
The main application areas
 
í˝ full-color LED luminous characters light string, LED full-color modules.
í˝ the soft light of the full-color LED light bar, LED guardrail tube.
í˝ LED light source, LED pixel screen, LED shaped screen.
í˝ a variety of electronic products, electrical equipment, marquees.
 
Product Overview
 
The WS2811 is a three-channel LED drivers control a dedicated circuit, the chip contains intelligent digital interface data latch signal shaping amplifier driver circuit also includes a high-precision internal oscillator and 15V high-voltage programmable constant-current output drivers. Meanwhile, in order to reduce power supply ripple, three channel delay conduction, so that the frame refresh, which reduces the ripple.
 
24bit the singlet NRZ communication chip, chip after power-on reset, DIN side to accept the data transmitted from the controller over, first of all sent over the data is the first chip to extract before being delivered to the on-chip data latch the remaining data after plastic surgery to enlarge the internal plastic processing circuit through the DO port forwarding output to the next cascaded chip, each chip transmission signal to reduce 24bit. Plastic chip with automatic forwarding technology, making the number of the chip cascade from the limitations of signal transmission, limited only by the signal transmission speed requirements.
 
Chip internal data latch according to the 24bit data received in the end OUTR, OUTG, OUTB control the duty cycle control signal, waiting for the DIN-ended input RESET signal when all the chips synchronization of the received data to the various segment, will chip after the end of the signal re-accept the new data, finished the beginning of 24bit data, DO port forwarding data port, the chip does not receive the RESET code, the original OUTR OUTG, OUTB pin output remains unchanged, the the 50Ž╠s above low RESET code is received, the chip will have just received the 24bit PWM data pulse width output to OUTR the, OUTG OUTB pin. Provided the SOP8 packages.

 
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