參數(shù)資料
型號(hào)： AD9742ARUZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 1/32頁(yè)
文件大小： 0K
描述： IC DAC 12BIT 210MSPS 28-TSSOP
產(chǎn)品培訓(xùn)模塊： Data Converter Fundamentals
DAC Architectures
標(biāo)準(zhǔn)包裝： 50
系列： TxDAC®
設(shè)置時(shí)間： 11ns
位數(shù)： 12
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(lèi)型： 表面貼裝
封裝/外殼： 28-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 28-TSSOP
包裝： 管件
輸出數(shù)目和類(lèi)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： AD9742ACP-PCBZ-ND - BOARD EVAL FOR AD9742ACP
12-Bit, 210 MSPS
TxDAC Digital-to-Analog Converter
Data Sheet
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
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
2002–2013 Analog Devices, Inc. All rights reserved.
FEATURES
High performance member of pin-compatible TxDAC
product family
Excellent spurious-free dynamic range performance
SNR at 5 MHz output, 125 MSPS: 70 dB
Twos complement or straight binary data format
Differential current outputs: 2 mA to 20 mA
Power dissipation: 135 mW at 3.3 V
Power-down mode: 15 mW at 3.3 V
On-chip 1.2 V Reference
CMOS compatible digital interface
28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP
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
F
CLOCK
SLEEP
02913-B-001
REFIO
FS ADJ
DVDD
DCOM
CLOCK
DIGITAL DATA INPUTS (DB11–DB0)
150pF
3.3V
AVDD
ACOM
AD9742
CURRENT
SOURCE
ARRAY
IOUTA
IOUTB
MODE
LSB
SWITCHES
SEGMENTED
SWITCHES
LATCHES
Figure 1.
GENERAL DESCRIPTION
The AD97421 is a 12-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 AD9742 offers exceptional ac and dc
performance while supporting update rates up to 210 MSPS.
The AD9742’s low power dissipation makes it well suited for
portable and low power applications. Its power dissipation can
be further reduced to a mere 60 mW with a slight degradation
in performance by lowering the full-scale current output. Also,
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 AD9742 is the 12-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 AD9742 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: 5,568,145; 5,689,257; and 5,703,519.
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AD9742ARUZRL7 功能描述:IC DAC 12BIT 210MSPS 28-TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:TxDAC® 標(biāo)準(zhǔn)包裝:47 系列:- 設(shè)置時(shí)間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類(lèi)型:1 電流，單極；1 電流，雙極 采樣率（每秒）:*
AD9742ARZ 功能描述:IC DAC 12BIT 210MSPS 28-SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:TxDAC® 標(biāo)準(zhǔn)包裝:47 系列:- 設(shè)置時(shí)間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類(lèi)型:1 電流，單極；1 電流，雙極 采樣率（每秒）:*
AD9742ARZRL 功能描述:IC DAC 12BIT 210MSPS 28-SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:TxDAC® 標(biāo)準(zhǔn)包裝:47 系列:- 設(shè)置時(shí)間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類(lèi)型:1 電流，單極；1 電流，雙極 采樣率（每秒）:*
AD9742-EB 制造商:Analog Devices 功能描述:EVAL BOARDFOR AD9742 - Bulk
AD9742-EBZ 制造商:AD 制造商全稱:Analog Devices 功能描述:12-Bit, 210 MSPS TxDAC Digital-to-Analog Converter
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