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參數(shù)資料
| 型號(hào)： | AD7002 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | M83723 4C 4#12 PIN RECP |
| 中文描述： | LC2MOS GSM基帶I / O端口 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 455K |
| 代理商： | AD7002 |
REV. B
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
AD7002
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
Analog Devices, Inc., 1997
LC
2
MOS
GSM Baseband I/O Port
FUNCTIONAL BLOCK DIAGRAM
10-BIT DAC
10-BIT DAC
2.5V
REFERENCE
REFERENCE
OUTPUT BUFFER
AD7002
I Tx
Q Tx
REF OUT
I Rx
Q Rx
AUX
CLK2
AV
AGND
Tx SLEEP
Tx DATA
THREENABLE
Rx DATA (I DATA)
AUX DATA
AUX CLK
AUX LATCH
Rx SLEEP1
Rx SLEEP2
GMSK PULSE
SHAPING ROM
DD
DGND
DV
DD
4TH ORDER BESSEL
LOW-PASS FILTER
4TH ORDER BESSEL
LOW-PASS FILTER
AUX
AUX
AUX
9-BIT DAC
10-BIT DAC
8-BIT DAC
16-BIT SHIFT REGISTER
CLK1
MZERO
Σ
MODULATOR
Σ
MODULATOR
Tx CLK
Rx SYNC
I CHANNEL
DIGITAL FIR FILTER
OFFSET REGISTER
Q CHANNEL
DIGITAL FIR FILTER
OFFSET REGISTER
RECEIVE
CHANNEL
SERIAL
INTERFACE
Rx CLK
RATE
MODE
CAL
SWITCH-CAP
FILTER
SWITCH-CAP
FILTER
I/Q (Q DATA)
FEATURES
Single +5 V Supply
Transmit Channel
On-Chip GMSK Modulator
Two 10-Bit D/A Converters
Analog Reconstruction Filters
Power-Down Mode
Receive Channel
Two Sigma-Delta A/D Converters
FIR Digital Filters
On-Chip Offset Calibration
Power-Down Mode
3 Auxiliary D/A Converters
Power-Down Modes
On-Chip Voltage Reference
Low Power
44-Lead PQFP
APPLICATIONS
GSM
PCN
GENERAL DESCRIPTION
The AD7002 is a complete low power, two-channel, input/
output port with signal conditioning. The device is used as a
baseband digitization subsystem, performing signal conversion
between the DSP and the IF/RF sections in the Pan-European
telephone system (GSM).
The transmit path consists of an onboard digital modulator,
containing all the code necessary for performing Gaussian Mini-
mum Shift Keying (GMSK), two high accuracy, fast DACs with
output reconstruction filters. The receive path is composed of
two high performance sigma-delta ADCs with digital filtering. A
common bandgap reference feeds the ADCs and signal DACs.
Three control DACs (AUX DAC1 to AUX DAC3) are in-
cluded for such functions as AFC, AGC and carrier signal shap-
ing. In addition, AUX FLAG may be used for routing digital
control information through the device to the IF/RF sections.
As it is a necessity for all GSM mobile systems to use the lowest
power possible, the device has power-down or sleep options for
all sections (transmit, receive and auxiliary).
The AD7002 is housed in 44-lead PQFP (Plastic Quad Flatpack).
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相關(guān)代理商/技術(shù)參數(shù) |
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| AD7002AS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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| AD7008 | 制造商:AD 制造商全稱:Analog Devices 功能描述:CMOS DDS Modulator |
| AD7008/PCB | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述: |
| AD7008AP20 | 制造商:Analog Devices 功能描述:Digital Synthesizer 44-Pin PLCC |
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