ATR2406-DEV-BOARD View Datasheet(PDF) - Atmel Corporation

Part Name

Description

MFG CO.

ATR2406-DEV-BOARD

Low-IF 2.4-GHz ISM Transceiver

Atmel Corporation 

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7. PLL Principle

Figure 7-1. PLL Principle

Programable counter PC

"- Main counter MC

"- Swallow counter SC

fVCO = 1728 kHz × (SMC × 32 + SSC)

Phase frequency

detector PD

fPD = 1728 kHz

External

loop filter

Charge

pump

VCO

ATR2406

Divider

by 2

PA driver

Mixer

Reference counter RC

REF_CLK

D7

10.368 MHz

0

13.824 MHz

1

PLL reference

Frequency

REF_CLK

Baseband controller

Gaussian

filter GF

TXDAT

9

4779N–ISM–12/08

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