T2803 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

MFG CO.

T2803

2.4 GHz WDECT/ISM Single-chip Transceiver

Atmel Corporation 

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Figure 3-1. PLL Principle

RF_IN

Programable counter PC

"- Main counter MC

"- Swallow counter SC

fVCO = fPD x (SMC x 32 + SSC)

Phase frequency

detector PD

fPD = 1.728 MHz

ext. loop filter

Charge

pump

VCO

fVCO

Divider

by 2

VCO

DAC

GF_DATA

Gaussian

filter GF

PA driver

Mixer

Reference counter RC

REF_CLK

SRC

6.912 MHz

10.368 MHz

6

13.824 MHz

8

1.152 Mbit/s

PLL reference

Frequency

REF_CLK

Baseband controller

TX_DATA

14 T2803

4572I–DECT–07/05

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