C-MAC MicroTechnology offers what it claims is the world's first TC-OCXOs (temperature-compensated oven-controlled crystal oscillators), designed to deliver the high stability of an OCXO from a device with low power consumption, small size and light weight comparable to those of a TCXO.
Ambient temperature variation is one of the main causes of frequency variation in a crystal oscillator. To overcome this, the TC-OCXOs use a hybrid combination of limited temperature control, by use of an oven, and further reduction of the remaining frequency error through C-MAC's proprietary Pluto temperature compensation ASIC.
Previous attempts by various parties to combine temperature compensation with oven control have taken a crude 'heating a TCXO' approach - a heater has been used to reduce the temperature range seen by the TCXO. The result has been oscillators with good power consumption but significantly inferior stability to existing OCXOs.
C-MAC's TC-OCXO approach uses a miniature oven with crude temperature control to keep the crystal oscillator at an approximately constant temperature slightly above its specified operating temperature range - eg, between 90° and 95°C for a device with operating temperature range specified as -40° to +85°C. Any residual frequency errors occurring over the oven's limited temperature range are then minimised using the Pluto ASIC's analog compensation circuitry. The result is an oscillator with overall stability nearly an order of magnitude better than the most stable TCXOs - ie, comparable to that of an OCXO - but with better power consumption, smaller and lighter package size and faster warm-up.
For example, a typical specification might offer ±0,05 ppm stability over temperature range of -20° to +70°C, at standard frequencies from 5 to 20 MHz, with a highly linear ±5 ppm frequency adjustment for ageing effects, power consumption =400 mW at -20°C steady state or =1,0 mW during warm-up, from a 3,3 V supply. This all comes in an industry standard 20,7 x 13,08 mm DIL package.
For more information contact Jeva Narian, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected]
Adaptive optics’ power solution Altron Arrow
Opto-Electronics
Vicor power-dense adaptive optical modules enable colossal telescopes to look into the past for deep space discoveries.
Read more...Wide input voltage buck-boost converter Altron Arrow
Power Electronics / Power Management
The MAX77859 from Analog Devices is a high-efficiency, high-performance buck-boost converter targeted for systems requiring a wide input voltage range of between 2,5 and 22 V.
Read more...High-performance processor for edge-AI Altron Arrow
DSP, Micros & Memory
The STM32MP23 microprocessor from STMicroelectronics is the latest addition to the STM32MP2 series, designed to meet the demands of industrial, IoT, and edge AI applications.
Read more...6 GHz power amplifier Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Analog Devices’ ADPA1116 is a 0,3 to 6 GHz GaN-based power amplifier with a saturated output power (POUT) of 39,5 dBm.
Read more...STM releases innovative GNSS receiver Altron Arrow
Telecoms, Datacoms, Wireless, IoT
STMicroelectronics recently introduced the Teseo VI family of global navigation satellite system receivers aimed at high-volume precise positioning use cases.
Read more...Integrated STM32WBA6 wireless microcontrollers Altron Arrow
DSP, Micros & Memory
Cost-efficient and highly integrated embedded controllers for emerging 2,4 GHz wireless applications in smart home, health, factory, and agriculture.
Read more...Ultra-low-power MCU with FPU Arm Cortex-M33 Altron Arrow
DSP, Micros & Memory
STMicroelectronics has expanded its STM32 ultra-low-power family with the launch of the STM32U3 for cost-sensitive applications in industrial, medical, and consumer electronics devices.
Read more...Compact and powerful Bluetooth module Altron Arrow
Telecoms, Datacoms, Wireless, IoT
u-blox has introduced its ANNA-B5, a compact, powerful and secure Bluetooth LE module optimised for IoT applications.
printer friendly version