AD6650ABCZ Analog Devices Inc, AD6650ABCZ Datasheet

AD6650ABCZ

Manufacturer Part Number

AD6650ABCZ

Description

DIVERSITY IF-TO-BASEBAND GSM/EDGE NARROW-BAND RECEIVER

Manufacturer

Analog Devices Inc

Datasheet

1.AD6650ABCZ.pdf (44 pages)

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FEATURES

116 dB dynamic range

Digital VGA

I/Q demodulators

Active low-pass filters

Dual wideband ADC

Programmable decimation and channel filters

VCO and phase-locked loop circuitry

Serial data output ports

Intermediate frequencies of 70 MHz to 260 MHz

10 dB noise figure

+43 dBm input IP2 at 70 MHz IF

−9.5 dBm input IP3 at 70 MHz IF

3.3 V I/O and CMOS core

Microprocessor interface

JTAG boundary scan

APPLICATIONS

PHS or GSM/EDGE single carrier, diversity receivers

Microcell and picocell systems

Wireless local loop

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

CPOUT

VLDO

AIN

BIN

VGA

PLL/

VCO

JTAG

LPF

MUX

DAC

TWEAK GAIN

FUNCTIONAL BLOCK DIAGRAM

12-BIT

REF

ADC

DIVIDER

CLK

COARSE

DCC

Figure 1.

GSM/EDGE Narrow-Band Receiver

AD6650 Diversity IF-to-Baseband

RELIN

CTRL

AGC

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

Smart antenna systems

Software radios

In-building wireless telephony

PRODUCT DESCRIPTION

The AD6650 is a diversity intermediate frequency-to-baseband

(IF-to-baseband) receiver for GSM/EDGE. This narrow-band

receiver consists of an integrated DVGA, IF-to-baseband I/Q

demodulators, low-pass filtering, and a dual wideband ADC.

The chip can accommodate IF input from 70 MHz to 260 MHz.

The receiver architecture is designed such that only one external

surface acoustic wave (SAW) filter for main and one for diversity

are required in the entire receive signal path to meet GSM/EDGE

blocking requirements.

Digital decimation and filtering circuitry provided on-chip

remove unwanted signals and noise outside the channel of

interest. Programmable RAM coefficient filters allow antialiasing,

matched filtering, and static equalization functions to be combined

in a single cost-effective filter. The output of the channel filters

is provided to the user via serial output I/Q data streams.

ORDER

CIC

FILTER

ORDER

IIR

PROG.

(RCF)

FIR

EDGE IF RECEIVER

MICRO

AD6650 GSM/

FINE

DCC

FINE

DCC

SERIAL

PORT

BIST

AD6650

www.analog.com

SCLK

SDFS

SDO0

SDO1

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