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AD7729ARU 参数 Datasheet PDF下载

AD7729ARU图片预览
型号: AD7729ARU
PDF下载: 下载PDF文件 查看货源
内容描述: 双通道Σ-Δ型ADC, DAC辅助 [Dual Sigma-Delta ADC with Auxiliary DAC]
分类和应用:
文件页数/大小: 16 页 / 145 K
品牌: AD [ ANALOG DEVICES ]
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FEATURES
+3 V Supply Voltage
Baseband Serial Port (BSPORT)
Differential IRx and QRx
ADC Channels
Two 15-Bit Sigma-Delta A/D Converters
FIR Digital Filters
64 dB SNR
Output Word Rate 270.83 kHz
Twos Complement Coding
On-Chip Offset Calibration
Power-Down Mode
Auxiliary D/A Converter
Auxiliary Serial Port (ASPORT)
On-Chip Voltage Reference
Low Power
28-Lead TSSOP/28-Lead SOIC
APPLICATIONS
GSM Basestations
Pagers
FUNCTIONAL BLOCK DIAGRAM
DVDD2
DVDD1 DGND
AGND
AVDD1
Dual Sigma-Delta ADC
with Auxiliary DAC
AD7729
GENERAL DESCRIPTION
This monolithic 3 V CMOS device is a low power, two-channel,
input port with signal conditioning. The receive path is com-
posed of two high performance sigma-delta ADCs with digital
filtering. A common bandgap reference feeds the ADCs.
A control DAC is included for such functions as AFC. The auxil-
iary functions can be accessed via the auxiliary port (ASPORT).
This device is available in a 28-lead TSSOP package or a
28-lead SOIC package.
AVDD2
ASDI
ASDIFS
ASCLK
ASDO
ASDOFS
ASE
AUXILIARY
SERIAL
INTERFACE
10-BIT
AUXDAC
AUXDAC
BSDI
BSDIFS
BSCLK
BSDO
BSDOFS
BSE
BASEBAND
SERIAL
INTERFACE
OFFSET
ADJUST
DECIMATION
FIR DIGITAL
FILTER
IRxP
MODULATOR
IRxN
OFFSET
ADJUST
DECIMATION
FIR DIGITAL
FILTER
QRxP
MODULATOR
QRxN
DIVIDE BY 2
MCLK
RxON
RESETB
MUX
REFERENCE
REFCAP
REFOUT
REV. 0
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1998