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T2801-PLH

DECT Single-Chip Transceiver

Atmel Corporation 

DECT Single-Chip Transceiver

T2801

Description

The T2801 is an RF IC for low-power DECT appli-

cations. The HP-VFQFP-N48-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, inte-

grated synthesizer, fully integrated VCO, TX filter and

modulation compensation circuit for advanced closed-

loop modulation concept. No mechanical tuning is

necessary in production.

Electrostatic sensitive device.

Observe precautions for handling.

Features

D Supply-voltage range 3 V to 4.6 V (unregulated)

D Auxiliary-voltage regulator on-chip

D Low current consumption

D Few low cost external components

D No mechanical tuning required

D Non-blindslot and blindslot operation

D Unlimited multislot operation with advanced closed-

loop modulation

D Supports multiple reference clocks (10.368 MHz/

13.824 MHz/ 20.736 MHz)

D TX preamplifier with 0 dBm output power at 1.9 GHz

and ramp-signal generator for SiGe power amplifier

Block Diagram

MIXER

OUT IF_IN

IF_TANK

DEMOD

TANK

CF

IR MIXER

IF AMP 1

IF AMP 2

RF_IN

RAMP_OUT

RAMP_SET

RAMP

GEN

RSSI

DEMOD

BB FILTER

D/A DEMOD DAC

BB_OUT

RSSI

TX / RX

VCO

GF

SWITCH

TX_DATA

TX_OUT

PC

PD

f

:n

TX DRIVER

PU_VCO

VCO

REG

CP

AUX

REG

MCC 3-WIRE

BUS

RC

f

:n

CTRL

LOGIC

CLOCK

DATA

ENABLE

RX_ON

TX_ON

PU_RX/TX

PU_PLL

VREG_VCO VS_VCO VREG VS_REG VTUNE

GND_VCO PU_REG REG_CTRL

CP

LD

I_CPSW

Figure 1. Block diagram

REF_CLK

Ordering Information

Extended Type Number

T2801-PLH

Package

HP-VFQFP-N48

Remarks

Taped and reeled

Rev. A9, 11-Dec-01

1 (27)

Preliminary Information

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