Maxim has introduced its first electronically programmable capacitor with high self-resonant frequency and 32 discrete capacitive steps. Housed in an SC70 package (2,2 x 2,4 mm), the MAX1474 is designed to replace mechanical inductors in common tuning circuits. It can be set to any one of 32 discrete capacitive steps ranging from 6,26 to 12,74 pF in 0,2 pF increments.
Application circuits can be used to increase the capacitive range, increase capacitive steps, or to multiply the Q-value to fit a particular application. Maxim says that because the capacitors are actually implemented in silicon, there is virtually no drift over time (less than 33 ppm/°C) A Q of 50 is possible.
Two pins are used to program the MAX1474. Capacitive values are selected by raising the enable pin and sending the device a discrete number of pulses corresponding to the desired capacitive value. It does not require a clock and will retain the programmed capacitance value for as long as power is supplied. If the system is dynamic and has the ability to retune itself, the capacitance value can easily be changed at any time by simply raising the enable pin and sending the desired number of pulses.
Applications include post-trim of low-cost regenerative stages, tuneable RF stages, garage door openers, keyless entry, industrial wireless control, and precision trimming of capacitive-based sensors.
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.
printer friendly version