T2803-PLS View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

T2803-PLS

2.4 GHz WDECT/ISM Single-chip Transceiver

Atmel Corporation 

Features

• Supply-voltage Range 3 V to 4.6 V (Regulated)

• Auxiliary Voltage Regulator On-chip (3.2 V to 4.6 V)

• Low Current Consumption

• Few Low-cost External Components

• No Mechanical Tuning Required

• Supports Multiple Reference Clocks (10.368 MHz/13.824 MHz)

• Fast Settling Synthesizer (864 kHz Channel Spacing)

• TX Preamplifier with 3 dBm Output Power at 2.45 GHz (4 Programmable Power Levels)

• Ramp-signal Generator for Power Ramping and Power Control of External SiGe Power

Amplifier (T7024 and T7026)

Electrostatic sensitive device.

Observe precautions for handling.

Description

The T2803 is an RF IC for low-power applications in the 2.45 GHz ISM band. The

QFN48-packaged IC is a complete transceiver including image rejection mixer, IF

amplifier, FM demodulator, baseband filter, RSSI, TX preamplifier, power-ramping

generator for power amplifiers, integrated synthesizer, fully integrated VCO and Gaus-

sian data filter for TX. No mechanical tuning is necessary in production.

Figure 1. Block Diagram

RF_IN

MIXER

OUT IF_IN

IF_TANK

IR MIXER

IF AMP 1

IF AMP 2

RAMP_OUT

RAMP_SET

RAMP

GEN

RAMP

D/A

RSSI

DEMOD

TANK

CF

DEMOD

BB FILTER

D/A DEMOD DAC

TX/RX

SWITCH

VCO

GF

BB_OUT

RSSI

TX_DATA

TX_OUT

PC

PD

f

:n

TX DRIVER

VCO

REG

CP

AUX

REG

3-WIRE

BUS

RC

f

:n

CTRL

LOGIC

CLOCK

DATA

ENABLE

RX_ON

TX_ON

PU_RX/TX

PU_PLL

2.4 GHz

WDECT/ISM

Single-chip

Transceiver

T2803

Preliminary

VREG_VCO

VS_VCO

VREG VS_REG

OLE

GND_VCO PU_REG REG_CTRL VTUNE

CP

LD

I_CPSW

REF_CLK

Rev. 4572G–DECT–01/04

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