RF1391C

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Surface Acoustic Wave (SAW) Filter technology has become state-ofthe-art for RF frequency selective devices. One important example of this technology is the RF1391C device, an innovative RF IC filter solution which offers improvements in spectral performance over traditional superheterodyne receiver designs. By utilizing the dielectric filter technology (DFT), it offers enhanced spectral performance and with maximum attenuation and passband ripple.

The RF1391C is designed to operate in the frequency range from 10 MHz to 1000 MHz and combines selectivity and RF signal isolation with very low insertion loss. The device has a typical insertion loss of less than 0.2dB, making it ideal for applications where sensitive RF signals need to be filtered. Additionally, the device has excellent spectral isolation and an integrated VCO, making it suitable for low-noise signal amplification.

The RF1391C utilizes a unique dielectric filter technology (DFT) which enables the device to minimize harmonic distortion and reduce the impact of unwanted RF signals. The DFT is particularly effective at suppressing wideband noise, as well as narrowband interferences. Additionally, it offers improved temperature stability and a significantly increased dynamic range compared to other conventional filter structures.

The device also features a unique RF/DC switch on the input side of the device. This switch can be used to switch between two sets of filter parameters, allowing users to select the desired filter characteristics. Additionally, the switch can be used to simultaneously switch between two different switching frequencies, enabling the device to quickly react to changing environmental conditions.

The RF1391C is a low power consuming device, with a typical power consumption of only 5 mW when operating at its full power. It has a maximum current of 5mA, and can be operated from a single +3V supply, making it ideal for portable and battery-operated devices. Additionally, it is available in a range of package sizes, making it easy to integrate into space-constrained designs.

The RF1391C utilizes a monolithic surface acoustic wave (SAW) in order to achieve its wideband RF selectivity. SAW filters consist of an interdigitated set of electrodes, with a set of resonator elements that act as a filter. When an input signal passes through the device, the electrode pattern produces an acoustic wave, which is then reflected back off of a stopband region. This reflection not only reduces distortion, but also suppresses wideband noise, allowing the device to provide excellent spectral isolation.

The RF1391C also features a built-in VCO which can be used to shift the frequency of the signal, making it easier to integrate into systems which require sensitivity to changing environmental conditions. Additionally, the device features a wide operating temperature range of -55°C to +125°C, making it suitable for a variety of harsh environments.

Overall, the RF1391C is an ideal device for applications requiring low insertion loss, high selectivity and excellent performance in the frequency range of 10 MHz to 1000 MHz. Its dielectric filter technology (DFT) gives it greater spectral performance than traditional superheterodyne receivers, and its on-chip RF/DC switch enables users to switch between two sets of filter parameters quickly and easily. Additionally, its low-power consumption and wide operating temperature range make it suitable for a variety of applications.

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