參數(shù)資料
型號(hào)： AD9740ARZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 1/32頁(yè)
文件大?。?/td> 0K
描述： IC DAC 10BIT 210MSPS 28-SOIC
產(chǎn)品培訓(xùn)模塊： Data Converter Fundamentals
DAC Architectures
標(biāo)準(zhǔn)包裝： 27
系列： TxDAC®
設(shè)置時(shí)間： 11ns
位數(shù)： 10
數(shù)據(jù)接口： 并聯(lián)
轉(zhuǎn)換器數(shù)目： 1
電壓電源： 模擬和數(shù)字
功率耗散（最大）： 145mW
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 28-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 28-SOIC W
包裝： 管件
輸出數(shù)目和類型： 2 電流，單極；2 電流，雙極
采樣率（每秒）： 210M
產(chǎn)品目錄頁(yè)面： 785 (CN2011-ZH PDF)
配用： AD9740ACP-PCBZ-ND - BOARD EVAL FOR AD9740ACP
10-Bit, 210 MSPS TxDAC D/A Converter
AD9740
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2005 Analog Devices, Inc. All rights reserved.
FEATURES
High performance member of pin-compatible
TxDAC product family
Excellent spurious-free dynamic range performance
SNR @ 5 MHz output, 125 MSPS: 65 dB
Twos complement or straight binary data format
Differential current outputs: 2 mA to 20 mA
Power dissipation: 135 mW @ 3.3 V
Power-down mode: 15 mW @ 3.3 V
On-chip 1.2 V Reference
CMOS-compatible digital interface
28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP
packages
Edge-triggered latches
APPLICATIONS
Wideband communication transmit channel
Direct IF
Base stations
Wireless local loops
Digital radio links
Direct digital synthesis (DDS)
Instrumentation
FUNCTIONAL BLOCK DIAGRAM
1.2V REF
REFLO
3.3V
RSET
0.1
μF
CLOCK
SLEEP
REFIO
FS ADJ
DVDD
DCOM
CLOCK
DIGITAL DATA INPUTS (DB9–DB0)
150pF
3.3V
AVDD
ACOM
AD9740
CURRENT
SOURCE
ARRAY
IOUTA
IOUTB
MODE
LSB
SWITCHES
SEGMENTED
SWITCHES
LATCHES
02911-001
Figure 1.
GENERAL DESCRIPTION
The AD97401 is a 10-bit resolution, wideband, third generation
member of the TxDAC series of high performance, low power
CMOS digital-to-analog converters (DACs). The TxDAC
family, consisting of pin-compatible 8-, 10-, 12-, and 14-bit
DACs, is specifically optimized for the transmit signal path
of communication systems. All of the devices share the same
interface options, small outline package, and pinout, providing
an upward or downward component selection path based
on performance, resolution, and cost. The AD9740 offers
exceptional ac and dc performance while supporting update
rates up to 210 MSPS.
The AD9740’s low power dissipation makes it well suited for
portable and low power applications. Its power dissipation
can be further reduced to 60 mW with a slight degradation in
performance by lowering the full-scale current output. In
addition, a power-down mode reduces the standby power
dissipation to approximately 15 mW. A segmented current
source architecture is combined with a proprietary switching
technique to reduce spurious components and enhance
dynamic performance.
Edge-triggered input latches and a 1.2 V temperature-compensated
band gap reference have been integrated to provide a complete
monolithic DAC solution. The digital inputs support 3 V CMOS
logic families.
PRODUCT HIGHLIGHTS
1.
The AD9740 is the 10-bit member of the pin-compatible
TxDAC family, which offers excellent INL and DNL
performance.
2.
Data input supports twos complement or straight binary
data coding.
3.
High speed, single-ended CMOS clock input supports
210 MSPS conversion rate.
4.
Low power: Complete CMOS DAC function operates on
135 mW from a 2.7 V to 3.6 V single supply. The DAC full-
scale current can be reduced for lower power operation,
and a sleep mode is provided for low power idle periods.
5.
On-chip voltage reference: The AD9740 includes a 1.2 V
temperature-compensated band gap voltage reference.
6.
Industry-standard 28-lead SOIC, 28-lead TSSOP, and 32-
lead LFCSP packages.
1 Protected by U.S. Patent Numbers 5568145, 5689257, and 5703519.
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