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DAC5672A

更新时间： 2024-09-13 11:48:31
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
26页 1088K
描述
DUAL,14-BIT 275 MSPS DIGITAL-TO-ANALOG CONVERTER

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DAC5672A 数据手册

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DAC5672A  
www.ti.com................................................................................................................................................... SLAS528A–SEPTEMBER 2007–REVISED MAY 2009  
DUAL, 14-BIT 275 MSPS DIGITAL-TO-ANALOG CONVERTER  
1
FEATURES  
•
Package: 48-Pin Thin-Quad Flat Pack (TQFP)  
•
14-Bit Dual Transmit Digital-to-Analog  
Converter (DAC)  
APPLICATIONS  
•
Cellular Base Transceiver Station Transmit  
Channel  
•
•
•
275 MSPS Update Rate  
Single Supply: 3 V to 3.6 V  
–
–
CDMA: W-CDMA, CDMA2000, IS-95  
TDMA: GSM, IS-136, EDGE/UWC-136  
High Spurious-Free Dynamic Range (SFDR):  
84 dBc at 5 MHz  
•
•
•
•
Medical/Test Instrumentation  
Arbitrary Waveform Generators (ARB)  
Direct Digital Synthesis (DDS)  
•
•
High Third-Order Two-Tone Intermodulation  
(IMD3): 79 dBc at 15.1 MHz and 16.1 MHz  
WCDMA Adjacent Channel Leakage Ratio  
(ACLR): 78 dB at Baseband  
Cable Modem Termination System (CMTS)  
•
•
•
•
•
•
WCDMA ACLR: 73 dB at 30.72 MHz  
Independent or Single Resistor Gain Control  
Dual or Interleaved Data  
On-Chip 1.2-V Reference  
Low Power: 330 mW  
Power-Down Mode: 9 mW  
DESCRIPTION  
The DAC5672A is a monolithic, dual-channel, 14-bit, high-speed DAC with on-chip voltage reference.  
Operating with update rates of up to 275 MSPS, the DAC5672A 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 DAC5672A has two, 14-bit, parallel input ports with separate clocks and data latches. For flexibility, the  
DAC5672A also supports multiplexed data for each DAC on one port when operating in the interleaved mode.  
The DAC5672A 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.  
The DAC5672A is available in a 48-pin TQFP package. Pin compatibility between family members provides  
12-bit (DAC5662) and 14-bit (DAC5672A) resolution. Furthermore, the DAC5672A is pin compatible to the  
DAC2904 and AD9767 dual DACs. The device is characterized for operation over the industrial temperature  
range of -40°C to 85°C.  
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 © 2007–2009, 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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DAC5672A 替代型号

型号 品牌 替代类型 描述 数据表
DAC5672 TI

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DAC5662 TI

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