AK1599V Datasheet, PDF (3/41 Pages) Asahi Kasei Microsystems – RF Transmitter for Satellite Communication

4.1. Block Diagram
4. Block Diagram and Functions
[AK1599V]
VDD*: CPBUFVDD, PVDD, MODVDD, MODVDD, BALVDD, TXVDD, LOVDD,
OAVDD, SVDD, VCOVDD, CPVDD
Fig.1 Block Diagram
4.2. Functions
Table1. Block Functions
Block
Quadrature Modulator
N divider
ΔΣ Modulator
R divider
Phase Frequency Detector (PFD)
Charge Pump
VCO
1.8V Regulator
3.3V Regulator
Function
Up-convert baseband I/Q input signal to RF signal.
Frequency divider which divides the signal of VCO and pass it to
phase frequency detector.
Control the modulus of N divider and realize fractional dividing.
Frequency divider which divides the signal of reference clock
and pass it to phase frequency detector.
Detect a phase difference between the divided VCO signal and
comparison frequency, and then drive the charge pump.
Output the electric charge according to the phase difference
detected by PFD.
The voltage controlled oscillator.
Create 1.8V for internal digital block.
Create 3.3V for digital interface.
015006835-E-00
-3-
2015/5