PRELIMINARY TECHNICAL DATA AD6546
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.
REV. Pr1.8 (Mar 2005) -3- Analog Devices Proprietary Information
TABLE OF CONTENTS
GENERAL DESCRIPTION ..............................................1
TABLE OF CONTENTS....................................................3
FUNCTIONAL DESCRIPTION .......................................4
Receiver ............................................................................ 4
Low Noise Amplifiers ................................................... 4
Down-Converting Mixers.............................................. 4
Receive Local Oscillator (LO) Generator...................... 4
Baseband Amplifiers / Low Pass Filters........................ 5
Baseband Output D.C. Offset Correction ...................... 5
Transmitter ....................................................................... 5
Transmit Modulator....................................................... 6
Quadrature Modulator ................................................... 6
Phase Frequency Detector (PFD) .................................. 6
Loop filter...................................................................... 6
Feedback Down-Converting Mixer ............................... 6
Amplitude Controller..................................................... 6
Transmit Frequency Plan............................................... 6
Frequency Synthesis ........................................................ 6
Fractional N Dividers .................................................... 6
Phase Frequency Detector/Charge Pump....................... 7
Synthesizer Loop filter .................................................. 7
Reference Oscillator Circuit .......................................... 7
Regulators (LDO’s) .......................................................... 7
Serial Interface................................................................. 7
Overview ....................................................................... 8
Serial Word Format ....................................................... 8
PROGRAMMING PROCEDURES ..................................8
Synthesizer Programming................................................ 8
Transmit Example.......................................................... 8
Receive Example ........................................................... 9
Modes of Operation.......................................................... 9
Control Sequence........................................................... 9
Calibration Description.................................................. 12
REGISTER DEFINITION TABLE.................................13
Register Addresses.......................................................... 13
Register Bit Map............................................................. 13
SPECIFICATIONS ...........................................................16
Operating Conditions ..................................................... 16
Absolute Maximum Ratings........................................... 16
General + Regulators ..................................................... 17
Supply Current............................................................. 17
Regulators .................................................................. 17
LDO1........................................................................... 17
Receive Sections ............................................................. 18
GSM850 and GSM900 Receiver ................................. 18
GSM1800 and GSM1900 Receivers............................ 19
Baseband Amplifiers ................................................... 20
Baseband Filters .......................................................... 20
Transmit Section ............................................................ 21
Transmitter GMSK...................................................... 21
Transmitter 8 PSK....................................................... 21
TxOP_LOW Output .................................................... 21
TxOP_HI Output ......................................................... 21
Transmit Section (Continued)........................................ 22
Tx Baseband I/Q Inputs............................................... 22
Fractional-N Synthesizer ............................................... 23
Synthesizer .................................................................. 23
SSB Phase Noise ......................................................... 23
Lock Time ................................................................... 23
Crystal Oscillator......................................................... 23
Reference Buffer Output ............................................. 23
Serial Port....................................................................... 24
Serial Interface ............................................................ 24
Timing Conditions....................................................... 24
Package Dimensions ...................................................... 26
【文件名】:06227@52RD_AD6546 Data Sheet Rev 1.8.pdf
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[此贴子已经被作者于2006-2-28 9:57:57编辑过] | 
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