A8285
Overview
Intended for analog and digital satellite receivers, the LNB (low noise block) converter regulator is a monolithic linear and switching voltage regulator, specifically designed to provide power and interface signals to an LNB downconverter, via coaxial cable. The device uses a 2-wire bidirectional serial interface, compatible with the I2C (Inter-C bus) standard, that operates up to 400 kHz.
- LNB selection and standby function
- Provides up to 500 mA load current
- Two-wire serial I2C interface
- Built-in tone oscillator, factory-trimmed to 22 kHz; facilitates DiSEqC™ 2.0 encoding
- Auxiliary modulation input
- 22 kHz tone detector facilitates DiSEqC™ decoding (A8287 only)
- Tracking switch-mode power converter for lowest dissipation
- LNB overcurrent protection and diagnostics
- Internal overtemperature protection
- LNB voltages (16 possible levels) compatible with all common standards Packages 16-pin SOIC (A8285) 24-pin SOIC (A8287)
