eV1527 Wireless Remote Control Coding Chip SOP8

Description

eV1527 Wireless Remote Control Coding Chip SOP8

Description

The EV1527 is a widely used encoder chip for wireless remote control systems. It is a CMOS LSI designed to generate fixed-length, 24-bit address and 4-bit data code words, suitable for PT2262-compatible systems. This chip is popular in 315 MHz / 433 MHz RF remote controls, garage doors, car alarms, wireless switches, and home automation devices.

Specifications

• Type: Remote Control Encoder IC

• Package: SOP-8 (also available in DIP-8)

• Operating Voltage (V_DD): 3.0 V – 15 V

• Operating Current: ~1 µA (standby), ~3 mA (active at V_DD = 5 V)

• Oscillator Resistor: External resistor defines timing

• Data Output: Serial code output for RF/IR transmission

• Address/Data Bits:

  • 20-bit address space → 1,048,576 (≈ 1M) unique codes

  • 4-bit data → up to 16 function keys

  • Total transmission: 24-bit code word

• Encoding: Pulse Width Modulation (PWM)

• Frequency Range: Compatible with 315 MHz, 330 MHz, 433 MHz, and 868 MHz RF modules (depends on RF front-end)

• Modulation: ASK / OOK (depends on RF transmitter used)

• Output Pin: Drives RF transmitter module directly

 Key Features

• Up to 1 million unique codes → prevents code duplication

• Wide supply voltage (3–15 V)

• Very low standby current → battery friendly

• Simple external resistor for timing adjustment

• Compatible with PT2262 / SC2262 decoders

• Easy interface to RF transmitter modules (e.g., SYN115, MX-FS-03V)

Applications

• Garage door and gate openers

• Car and motorcycle alarms

• Wireless doorbells and security systems

• Smart home RF remotes (lights, fans, switches)

• Wireless control toys and DIY remote projects