Technical Description
VCO (Voltage Controlled Oscillator) consists of discrete Transistor, inductor(L) and capacitance(C) that are troublesome to adjust, or large VCO elements are used. Especially, when L and C are used on board, the parasitic inductor and parakite capacitance must be considered for VCO. IF this VCO is built in to PLL synthesizer LSI, VCO design man-hours can be reduced.
About AK1574
AK1574 is a 5mm sq. This LSI is a fractional-N PLL frequency synthesizer with a VCO and 12bit ADCs.
This LSI eliminates troublesome adjustments of VCO and enables a small area. Its output frequency is a wide output frequency range of 46.875MHz to 1682.5MHz. Therefore, the frequency can be set according to various wireless systems.
Reducing VCO Design Man-hours using on chip VCO
Architecture example
The transmit circuit can be easily configured as shown in Fig.1 using a AK1574.
Transmitter and receiver circuit can be easily configured with a small number of components, as shown in Fig.2 using AK2401A and AK1574.
Evaluation board
AK1574 trial boards are available for easy evaluation.
Contact us if you wish to have a sample or evaluation board.
A FPGA/DAC for generating modulation signals is available. The modulation characteristics can be confirmed with the eye pattern.
