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參數(shù)資料
| 型號： | AD7011ARS |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | MB 4C 4#12 PIN RECP |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO24 |
| 封裝： | SSOP-24 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 389K |
| 代理商： | AD7011ARS |
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
CMOS, ADC
p
/4 DQPSK
Baseband Transmt Port
AD7011
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
FEATURES
Single +5 V Supply
On-Chip
p
/4 DQPSK Modulator
Modulator Bypass Analog Mode
Root-Raised Cosine Tx Filters,
a
= 0.35
Two 10-Bit D/A Converters
4th Order Reconstruction Filters
Differential Analog Outputs
On-Chip Ramp Up/Down Power Control
On-Chip Tx Offset Calibration
Dual Mode Operation, Analog and Digital
Very Low Power Dissipation, 30 mW typical
Power Down Mode < 10
m
A
On-Chip Voltage Reference
24-Pin SSOP
APPLICATIONS
American Digital Cellular Telephony
American Analog Cellular Telephony
GE NE RAL DE SCRIPT ION
T he AD7011 is a complete low power, CMOS,
π
/4 DQPSK
modulator with single +5 V power supply. T he part is designed
to perform the baseband conversion of I and Q transmit wave-
forms in accordance with the American Digital Cellular T ele-
phone system (T IA IS-54).
T he on-chip
π
/4 Differential Quadrature Phase Shift K eying
(DQPSK ) digital modulator, which includes the root raised
cosine filters, generates I and Q data in response to the transmit
data stream. T he AD7011 also contains ramp control envelope
logic to shape the I and Q output waveforms when ramping up
or down at the beginning or end of a transmit burst.
Besides providing all the necessary logic to perform
π
/4 DQPSK
modulation, the part also provides reconstruction filters to
smooth the DAC outputs, providing continuous time analog
outputs. T he AD7011 generates differential analog outputs for
both the I and Q signals.
As it is a necessity for all digital mobile systems to use the lowest
possible power, the device has transmit and receive power-down
options. T he AD7011 is housed in a space efficient 24-pin
SSOP (Shrink Small Outline Package).
FUNCT IONAL BLOCK DIAGRAM
Tx CLK (FRAME)
BOUT
QTx
V
AA
MODE1
AD7011
ITx
ITx
10-BIT
I-DAC
RECONSTRUCTION
FILTERS
2.46V
REFERENCE
POWER
QTx
CALIBRATION CIRCUITRY
MODULATOR
BYPASS
10-BIT
Q-DAC
Tx DATA (I DATA)
DGND
V
DD
MODE2
AGND
BYPASS
BIN (Q DATA)
RECONSTRUCTION
FILTERS
READY
ANALOG MODE
SERIAL
INTERFACE
π
/4 DQPSK
DIGITAL
MODULATOR
MCLK
I
Q
I
Q
相關(guān)PDF資料 |
PDF描述 |
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| AD7013ARS | CMOS TIA IS-54 Baseband Receive Port |
| AD7013 | CMOS TIA IS-54 Baseband Receive Port(CMOS 基帶接收口) |
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| AD704AN | Quad Picoampere Input Current Bipolar Op Amp |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7011ARS-REEL | 制造商:Analog Devices 功能描述:Quadrature Mod 24-Pin SSOP T/R 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| AD7013 | 制造商:AD 制造商全稱:Analog Devices 功能描述:CMOS TIA IS-54 Baseband Receive Port |
| AD7013ARS | 制造商:AD 制造商全稱:Analog Devices 功能描述:CMOS TIA IS-54 Baseband Receive Port |
| AD7013ARS-REEL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF/Baseband Circuit |
| AD7015 | 制造商:AD 制造商全稱:Analog Devices 功能描述:GSM Baseband Processing Chipset |
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