Preliminary Technical Information

AD6426

This Information applies to a product under development. Its characteristics and specifications are subject to change without notice. Analog Devices assumes no

obligation regarding future manufacture unless otherwise agreed to in writing. No responsibility is assumed by Analog Devices for its use; nor for any

infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent

rights of Analog Devices.

Revision Preliminary 2.3 (June 9, ´98)

- 21 -

Confidential Information

AFC

BREFOUT

AGC

ITXP

ITXN

QTXP

QTXN

IRXP

IRXN

QRXP

QRXN

RAMP

13 MHz

XTAL

RXON TXON

FILTER

GREF

GAIN

ITXP

ITXN

QTXP

QTXN

IRXP

IRXN

QRXN

QRXP

OSEN RXPU

TXPU

FILTER

TMX_OUT

LNA-IN

RXON

TXON

GSM_ON

DCS_ON

RMX_OUT

FREF

MXOP

IFHI

RFHI

RFLO

MODP

MODM

XTAL

MCLK

RESET

ASDI

ASDIFS

ASDOFS

ASCLK

ASDO

BSDI

BSDIFS

BSCLK

BSDO

BSDOFS

MODE

VSDI

VSDO

VSCLK

VSFS

CLKOUT

VBCRESET

ASDO

ASOFS

ASCLK

ASDI

BSDO

BSOFS

BSCLK

BSDI

BSIFS

VSDO

VSDI

VSCLK

VSFS

PAs &

Control

FILTERS

ANTENNASELECT

RX

TX

DUALBAND

RF FRONT-END

AD6432

AD6425

RXON

TXENABLE

GPIO2

GPIO1

RADIOPWRCTL

SYNTHCLK

SYNTHDATA

SYNTHEN0

AD6426

BANDSELECT0

BANDSELECT1

TCOR

RFCLK

TX_IN

TXPA

TXPHASE

DCLK

DATA

ENB

GPIO7

RFLO

RFLO

RFCLK

VCOs

+

SYNTHESIZERS

GSM_ON

DCS_ON

CLKIN

Figure 6. EVBC and Radio Interface