參數(shù)資料
型號(hào)： AD9857AST
廠商： ANALOG DEVICES INC
元件分類： 通信及網(wǎng)絡(luò)
英文描述： CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter
中文描述： SPECIALTY TELECOM CIRCUIT, PQFP80
封裝： MS-026-BEC, LQFP-80
文件頁(yè)數(shù)： 1/31頁(yè)
文件大?。?/td> 551K
代理商： AD9857AST
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
AD9857
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., 2000
REV. 0
CMOS 200 MSPS 14-Bit
Quadrature Digital Upconverter
FEATURES
200 MHz Internal Clock Rate
14-Bit Data Path
Excellent Dynamic Performance
80 dB SFDR @ 65 MHz ( 100 kHz) A
OUT
4 –20 Programmable Reference Clock Multiplier
Reference Clock Multiplier PLL Lock Detect Indicator
Internal 32-Bit Quadrature DDS
FSK Capability
8-Bit Output Amplitude Control
Single-Pin Power-Down Function
Four Programmable, Pin-Selectable Signal “Profiles”
SIN(x)/x Correction (Inverse SINC Function)
Simplified Control Interface
10 MHz Serial, 2- or 3-Wire SPI-Compatible
3.3 V Single Supply
Single-Ended or Differential Input Reference Clock
80-Lead LQFP Surface-Mount Packaging
Three Modes of Operation
Quadrature Modulator Mode
Single-Tone Mode
Interpolating DAC Mode
APPLICATIONS
HFC Data, Telephony, and Video Modems
Wireless Base Station
Agile, L.O. Frequency Synthesis
Broadband Communications
GENERAL DESCRIPTION
The AD9857 integrates a high-speed direct-digital synthesizer
(DDS), a high-performance, high-speed 14-bit digital-to-analog
converter (DAC), clock multiplier circuitry, digital filters, and other
DSP functions onto a single chip, to form a complete quadrature
digital upconverter device. The AD9857 is intended to function as
a universal I/Q modulator and agile upconverter, single-tone DDS,
or interpolating DAC for communications applications, where
cost, size, power dissipation, and dynamic performance are critical
attributes.
The AD9857 offers enhanced performance over the industry-
standard AD9856, as well as providing additional features.
The AD9857 is available in a space-saving surface-mount
package and is specified to operate over the extended industrial
temperature range of –40
°
C to +85
°
C.
FUNCTIONAL BLOCK DIAGRAM
PARALLEL
DATA IN
(14-BIT)
D
E
M
U
X
PDCLK/
FUD
14
INVERSE
CIC FILTER
INV
CIC
Q
M
U
X
(4 )
CIC
(2 – 63 )
FIXED
INTER-
POLATOR
PROGRAMMABLE
INTERPOLATOR
M
U
X
QUADRATURE
MODULATOR
S
C
M
U
X
INVERSE
SINC FILTER
INV
SINC
M
U
X
14
8
14-BIT
DAC
DAC_RSET
IOUT
IOUT
OUTPUT
SCALE
VALUE
D
I
S
C
32
TUNING
WORD
TIMING & CONTROL
DDS
CORE
I
I
H
I
I
D
REFCLK
REFCLK
MODE
CONTROL
CLOCK
MULTIPLIER
(4 – 20 )
M
U
X
PROFILE
SELECT
LOGIC
POWER-
DOWN
LOGIC
CONTROL REGISTERS
RESET
CIC
OVERFLOW
TxENABLE
SERIAL
PORT
DIGITAL
POWER-
DOWN
PS1
PLL
LOCK
PS0
CLOCK
INPUT
MODE
S
S
I
AD9857
14
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參數(shù)描述
AD9857ASTZ 功能描述:IC QUADRATURE DGTL UPCONV 80LQFP RoHS:是 類別:RF/IF 和 RFID >> RF 其它 IC 和模塊 系列:AD9857 標(biāo)準(zhǔn)包裝:100 系列:*
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AD9857ASTZKL1 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:
AD9858 制造商:AD 制造商全稱:Analog Devices 功能描述:1 GSPS Direct Digital Synthesizer
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