AK1545 Datasheet, PDF (1/39 Pages) Asahi Kasei Microsystems – 3.5GHz Low Noise Integer-N Frequency Synthesizer

[AK1545]
AK1545
3.5GHz Low Noise Integer-N Frequency Synthesizer
1. Overview
The AK1545 is an Integer-N PLL (Phase Locked Loop) frequency synthesizer, covering a wide range of frequency
from 500MHz to 3.5GHz. Consisting of a highly accurate charge pump, a reference divider, a programmable
divider and a dual-modulus prescaler (P/P+1), this product provides high performance, very low Phase Noise. An
ideal PLL can be achieved by combining the AK1545 with the external loop filter and VCO (Voltage Controlled
Oscillator). Access to the registers is controlled via a 3-wire serial interface. The operating supply voltage is from
2.7V to 5.5V, and the charge pump circuit and the serial interface can be driven by individual supply voltage.
2. Features
… Operating frequency :
… Programmable charge pump current :
… Fast lock mode :
… Supply Voltage :
… Separate Charge Pump Power Supply :
… Excellent Phase Noise :
… On-chip lock detection feature of PLL :
… Package :
… Operating temperature :
500MHz to 3.5GHz
250μA and 1mA
The charge pump current is switched by this function.
2.7 to 5.5 V (AVDD, DVDD pins)
AVDD to 5.6V (CPVDD pin)
-217dBc/Hz
Selectable Phase Frequency Detector (PFD) Output or
Digital filtered lock detect
16pin TSSOP
-40°C to 85°C
MS1471-E-00
1
2012/10