ADF4360-4BCPZ new / original IC Chip Integrated Synthesizer and VCO

FEATURES

Output frequency range: 1450 MHz to 1750 MHz

Divide-by-2 output

3.0 V to 3.6 V power supply

1.8 V logic compatibility Integer-N synthesizer

Programmable dual-modulus prescaler 8/9, 16/17, 32/33

Programmable output power level 3-wire serial interface

Analog and digital lock detect

Hardware and software power-down mode

APPLICATIONS

Wireless handsets (DECT, GSM, PCS, DCS, WCDMA)

Test equipment

Wireless LANs

CATV equipment

GENERAL DESCRIPTION

The ADF4360-4 is a fully integrated integer-N synthesizer and voltage-controlled oscillator (VCO). The ADF4360-4 is designed for a center frequency of 1600 MHz. In addition, a divide-by-2 option is available, whereby the user gets an RF output of between 725 MHz and 875 MHz. Control of all the on-chip registers is through a simple 3-wire interface. The device operates with a power supply ranging from 3.0 V to 3.6 V and can be powered down when not in use.

ABSOLUTE MAXIMUM RATINGS

TA = 25°C, unless otherwise noted. Table 3.

TRANSISTOR COUNT

12543 (CMOS) and 700 (Bipolar)

CIRCUIT DESCRIPTION REFERENCE INPUT SECTION

The reference input stage is shown in Figure 10. SW1 and SW2 are normally closed switches. SW3 is normally open.When power-down is initiated, SW3 is closed, and SW1 and SW2 are opened. This ensures that there is no loading of the REFIN pin on power-down