SIW1721BFIGSB datasheet, PDF - EEWORLD Datasheet

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SIW1721BFIGSB: DescriptionBLUETOOTH㈢ RADIO MODEM; File Size348KB，12 Pages; ManufacturerRF Micro Devices (Qorvo)

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SIW1721BFIGSB Overview

BLUETOOTH㈢ RADIO MODEM

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SiW1721B

Features

• Integrated RF transceiver and

modem for Bluetooth wireless

technology.

• Manufactured using low-power

0.18-micron CMOS process

technology.

• Digital baseband interface connects

directly to an integrated Bluetooth

controller.

• Direct conversion RF architecture

improves receiver-blocking

performance.

• Low out-of-band spurious emissions

minimize interference with mobile

phone operations.

• Hardware AGC dynamically adjusts

receiver performance in changing

environments.

• 50

RF I/O does not need additional

external impedance matching

components.

• On-chip voltage regulation simplifies

system design.

• -88 dBm receiver sensitivity and

+2 dBm transmitter power typical

performance specifications.

• Bluetooth Specification V2.0

qualified. Complies with Bluetooth

specifications V1.1, V1.2 and V2.0.

Reference

Clock

Ext

Power

SiW1721B Radio Modem

Single-ended LNA

ADC

and Downconverter

Single-ended Driver

DAC

and Upconverter

GFSK

Demodulator

GFSK

Modulator

Radio

Programming

and Control

SPI

CLK Circuit

Analog

Regulator

Digital

Regulator

Mobile Phone

Chip Set

BLUETOOTH® RADIO MODEM

Modem I/F

& Data

Reference

PLL

Modem

Clock

Generator

Integrated

Bluetooth

Baseband

Bluetooth Subsystem Using the SiW1721B Radio Modem

Summary

The SiW1721B is a 2.4-GHz radio transceiver for Bluetooth wireless

technology. This highly integrated transceiver is specifically designed for use

with a third party Bluetooth baseband controller chipset requiring an

external Bluetooth RF transceiver. Due to its low power CMOS process, the

design minimizes current draw in both active and standby modes.

The SiW1721B combines a radio transceiver and Gaussian Frequency Shift

Keying (GFSK) modem with digital control and interface logic. The IC also

incorporates analog and digital voltage regulators and a reference Phase

Lock Loop (PLL) capable of accepting various reference clock frequencies.

The level of integration enables a low system cost with fewer external

components.

The SiW1721B is packaged in a 5-by-5-mm, Pb-free, 32-pin QFN package

that meets RoHS (Green) requirements. Operating temperature range is

guaranteed from -40°C to +85°C.

Applications

• Mobile phones with integrated

controller for Bluetooth wireless

technology.

Ordering Information

SiW1721B

Bluetooth® Radio Modem

See page 12 for details.

Optimum Technology Matching® Applied

Si BJT

Si Bi-CMOS

GaInP/HBT

GaAs HBT

SiGe HBT

GaN HEMT

GaAs MESFET

Si CMOS

SiGe Bi-CMOS

RF Micro Devices, Inc.

7628 Thorndike Road

Greensboro, NC 27409, USA

Tel (336) 664 1233

Fax (336) 664 0454

http://www.rfmd.com

60 0076 R00F SiW1721B Radio Modem IC DS

October 6, 2006

1 of 12

SiW1721B

Description

The following figure shows the SiW1721B Radio Modem functional block diagram. During the receive process, the radio

signal is taken from the single-ended RF input pin that feeds into the low noise amplifier (LNA). The signal from the LNA is

directly down-converted to I/Q baseband, filtered with an anti-aliasing filter, and converted to a digital signal with a high

resolution analog-to-digital converter. The critical channel filtering is done in the digital domain for stable and repeatable

performance. The signal is then processed by a high performance GFSK demodulator. The IC has multiple internal self-

calibration circuits to maintain stable and repeatable performance from part-to-part as well as over the full temperature

range.

The IC has two fully integrated regulators: one for the radio (analog regulator) and one for the digital logic (digital

regulator). The digital regulator can be used to supply a Bluetooth baseband controller. Both regulators can be bypassed if

external regulation is desired.

Note:

When bypassing the analog regulator, the VBATT_ANA and VCC_OUT pins must be tied together and the external analog

voltage (1.8 V) should be applied to the VBATT_ANA pin. When bypassing the digital regulator, the VBATT_DIG pin should be

left unconnected and the external digital voltage (1.8 V) should be applied to the VBB_OUT pin.

The IC also provides power on reset and glitch-free clock start-up. A reference PLL can be enabled to support a number of

different reference frequencies.

Digital control functions and a programming interface provide radio modem control and a flexible interface to external

Bluetooth link controllers.

XTAL_P/CLK

VBATT_ANA

CHG_PUMP

VBATT_DIG

VCC_OUT

VBB_OUT

RESET_N

BB_CLK

VTUNE

PLL

Control

Clock Distribution

LNA

Voltage Regulators and

Power Distribution

ADC

Internal

50-Ohm

Match

Network

ADC

PLL

Synthesizer

Power

Control

DAC

GFSK

Modem

RF_IO

IDAC

VDD_IO

RX_TX_DATA

CD_TXEN

ENABLE_RM

HOP_STROBE

TX_RX_SWITCH

TX_BIAS

SPI_SS

SPI_TXD

SPI_RXD

SPI_CLK

Serial

Programming

Interface

(SPI)

DAC

File

System

Control

SiW1721B Block Diagram

Radio Interface

An internal power control loop maintains a very stable RF_IO signal level over the full temperature range and from part to

part. This means predictable and repeatable range at any temperature.

Modem Interface

The modem interface transfers the Bluetooth data between the SiW1721B Radio Modem and the ASIC. For reference

purposes, the pin description table (Table 1) provides a brief description of typical interface modes.

Clock Signals

Multiple reference clock frequencies can be used as a reference for the RF circuits, to synthesize clocks for most of the

internal digital circuits, and to supply external processors with timing signals.

Serial Programming Interface (SPI)

The serial programming interface (SPI) is used to access the internal registers of the SiW1721B Radio Modem. The SPI is

a synchronous serial interface that can be clocked to a nominal speed of 8MHz.

Power

The SiW1721B Radio Modem includes both analog and digital voltage regulators. Input options are based on factors such

as voltage source, where internal regulators are used, and I/O voltage.

2 of 12

60 0076 R00F SiW1721B Radio Modem IC DS

VCC

SIW1721BFIGSB Related Products

	SIW1721BFIGSB	SIW1721B	SIW1721BFIG-T13	SIW1721BFIG-TR13	SIW1721BFIGSR	SIW1721BFIG
Description	BLUETOOTH㈢ RADIO MODEM	BLUETOOTH㈢ RADIO MODEM	BLUETOOTH㈢ RADIO MODEM	BLUETOOTH㈢ RADIO MODEM	BLUETOOTH㈢ RADIO MODEM	BLUETOOTH㈢ RADIO MODEM

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