ASIC success story
Application
Wireless metering has greatly simplified the collection of residential and commercial utility usage data. Many of these systems are built on sub-1 GHz communication standards that benefit from using spread spectrum techniques which allow robust and secure communication in a crowded and narrow radio band.
CSS partnered with a leading supplier of wireless metering systems to create a robust spread spectrum transceiver.
At a glance
Band900MHz spread spectrum
Supply2.7–5.5V
Standby<10µA
MarketIndustrial
Custom solution from CSS
This ASIC, along with an MCU in the system, control the operation of a 900MHz spread spectrum transceiver.
The ASIC is responsible for system timing & wake-up delay, message formatting, pseudo-random sequence generator, RAM, EEPROM and low battery detector. A sleep mode is included to conserve power in battery applications.
Key features
- Wide Supply Range (2.7V to 5.5V)
- Low Standby Current (< 10uA)
- Internal 4-Bit and 8-Bit DACs
- Internal RAM & EEPROM
- Watchdog & Wakeup Timers
- Coarse & Fine Modulation Outputs
- Temperature Range = -40°C to +85°C