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DAC5689

更新时间： 2024-11-21 06:52:15
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
48页 1590K
描述
16-BIT 800 MSPS 2x-8x INTERPOLATING DUAL-CHANNEL DIGITAL-TO-ANALOG CONVERTER (DAC)

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DAC5689 数据手册

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DAC5689  
www.ti.com .......................................................................................................................................................................................... SLLS989–SEPTEMBER 2009  
16-BIT, 800 MSPS 2x–8x INTERPOLATING DUAL-CHANNEL  
DIGITAL-TO-ANALOG CONVERTER (DAC)  
1
FEATURES  
DESCRIPTION  
•
Dual, 16-Bit, 800 MSPS DACs  
The DAC5689 is a dual-channel 16-bit 800 MSPS  
digital-to-analog converter (DAC) with dual CMOS  
digital data bus, integrated 2x-8x interpolation filters,  
•
Dual, 16-Bit, 250 MSPS CMOS Input Data  
–
–
16 Sample Input FIFO  
a
fine frequency mixer with 32-bit complex  
numerically controlled oscillator (NCO), IQ  
Flexible Input Data Bus Options  
•
•
High Performance  
81 dBc ACLR WCDMA TM1 at 70 MHz  
Selectable 2x–8x Interpolation Filters  
Stop-band Attenuation > 80 dB  
compensation, and internal voltage reference.  
Different modes of operation enable or bypass  
various signal processing blocks. The DAC5689  
offers superior linearity, noise and crosstalk  
performance.  
–
–
•
•
Complex Mixer with 32-Bit NCO  
The DAC5689 dual CMOS data bus provides 250  
MSPS input data transfer per DAC channel. Several  
input data options are available: dual-bus data,  
single-bus interleaved data, even and odd  
multiplexing at half-rate, and an input FIFO with either  
external or internal clock to ease interface timing.  
Input data can be interpolated 2x, 4x or 8x by  
on-board digital interpolating FIR filters with over 80  
dB of stop-band attenuation.  
Digital Quadrature Modulator Correction  
–
Gain, Phase and Offset Correction  
•
•
•
•
•
Digital Inverse SINC Filter  
3- or 4-Wire Serial Control Interface  
On Chip 1.2-V Reference  
Differential Scalable Output: 2 to 20 mA  
Package: 64-pin 9×9mm QFN  
The DAC5689 allows both complex or real output. An  
optional 32-bit NCO/mixer in complex mode provides  
frequency upconversion and the dual DAC output  
produces a complex Hilbert Transform pair. A digital  
Inverse SINC filter compensates for the natural DAC  
sin(x)/x frequency roll-off. The digital Quadrature  
Modulator Correction (QMC) feature allows IQ  
compensation of phase, gain and offset to maximize  
sideband rejection and minimize LO feed-through of  
an external quadrature modulator performing the final  
single sideband RF up-conversion.  
APPLICATIONS  
•
•
•
•
•
Cellular Base Stations  
Broadband Wireless Access (BWA)  
WiMAX 802.16  
Fixed Wireless Backhaul  
Cable Modem Termination System (CMTS)  
The DAC5689 is pin upgradeable to the DAC5688  
which includes a clock multiplying PLL. The DAC5689  
is characterized for operation over the industrial  
temperature range of -40°C to 85°C and is available  
in a 64-pin 9x9mm QFN package.  
ORDERING INFORMATION(1)(2)  
ORDER CODE  
PACKAGE QTY  
TAPE AND REEL FORMAT  
PACKAGE  
TA = –40°C to 85°C  
DAC5689IRGCT  
DAC5689IRGCR  
DRAWING/TYPE(3) (4)  
250  
RGC / 64QFN  
Quad FlatpackNo-Lead  
2000  
(1) For correct DAC5689 operation, bits [1:0] in register CONFIG26 need to be set to "10" at device startup (see Recommended Startup  
Sequence).  
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI  
website at www.ti.com.  
(3) Thermal Pad Size: 7,4 mm × 7,4 mm  
(4) MSL Peak Temperature: Level-3-260C-168 HR  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2009, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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DAC5689 替代型号

型号 品牌 替代类型 描述 数据表
DAC5688 TI

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