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DAC5672-EP

更新时间： 2024-11-29 12:21:31
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
27页 1187K
描述
DUAL 14-BIT 200-MSPS DIGITAL-TO-ANALOG CONVERTER

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DAC5672-EP 数据手册

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DAC5672-EP  
www.ti.com  
SGLS339A–JUNE 2006–REVISED OCTOBER 2006  
DUAL 14-BIT 200-MSPS DIGITAL-TO-ANALOG CONVERTER  
FEATURES  
•
WCDMA Adjacent Channel Leakage Ratio  
(ACLR): 78 dB at Baseband  
•
Controlled Baseline  
•
•
•
•
•
•
•
WCDMA ACLR: 73 dB at 30.72 MHz  
Independent or Single Resistor Gain Control  
Dual or Interleaved Data  
– One Assembly  
– One Test Site  
– One Fabrication Site  
On-Chip 1.2-V Reference  
•
•
Extended Temperature Performance of  
–55°C to 125°C  
Low Power: 330 mW  
Enhanced Diminishing Manufacturing  
Sources (DMS) Support  
Power-Down Mode: 9 mW  
Package: 48-Pin Thin-Quad Flat Pack (TQFP)  
•
•
•
Enhanced Product-Change Notification  
(1)  
APPLICATIONS  
Qualification Pedigree  
•
Cellular Base Transceiver Station Transmit  
Channel  
14-Bit Dual Transmit Digital-to-Analog  
Converter (DAC)  
– CDMA: W-CDMA, CDMA2000, IS-95  
– TDMA: GSM, IS-136, EDGE/UWC-136  
Medical/Test Instrumentation  
Arbitrary Waveform Generators (ARB)  
Direct Digital Synthesis (DDS)  
•
•
•
200-MSPS Update Rate  
Single Supply: 3 V to 3.6 V  
•
•
•
•
High Spurious-Free Dynamic Range (SFDR):  
84 dBc at 5 MHz  
•
High Third-Order Two-Tone Intermodulation  
(IMD3): 79 dBc at 15.1 MHz and 16.1 MHz  
Cable Modem Termination System (CMTS)  
(1) Component qualification in accordance with JEDEC and  
industry standards to ensure reliable operation over an  
extended temperature range. This includes, but is not limited  
to, Highly Accelerated Stress Test (HAST) or biased 85/85,  
temperature cycle, autoclave or unbiased HAST,  
electromigration, bond intermetallic life, and mold compound  
life. Such qualification testing should not be viewed as  
justifying use of this component beyond specified  
performance and environmental limits.  
DESCRIPTION  
The DAC5672 is a monolithic, dual-channel, 14-bit, high-speed digital-to-analog converter (DAC) with on-chip  
voltage reference.  
Operating with update rates of up to 200 MSPS, the DAC5672 offers exceptional dynamic performance, tight  
gain, and offset matching characteristics that make it suitable in either I/Q baseband or direct IF communication  
applications.  
Each DAC has a high-impedance, differential-current output, suitable for single-ended or differential  
analog-output configurations. External resistors allow scaling the full-scale output current for each DAC  
separately or together, typically between 2 mA and 20 mA. An accurate on-chip voltage reference is temperature  
compensated and delivers a stable 1.2-V reference voltage. Optionally, an external reference may be used.  
The DAC5672 has two 14-bit parallel input ports with separate clocks and data latches. For flexibility, the  
DAC5672 also supports multiplexed data for each DAC on one port when operating in the interleaved mode.  
The DAC5672 has been specifically designed for a differential transformer-coupled output with a 50-Ω  
doubly-terminated load. For a 20-mA full-scale output current, both a 4:1 impedance ratio (resulting in an output  
power of 4 dBm) and 1:1 impedance ratio transformer (–2 dBm output power) are supported.  
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 © 2006, 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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