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DAC5672A 数据表(PDF) 1 Page - Texas Instruments

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部件名 DAC5672A
功能描述  DUAL,14-BIT 275 MSPS DIGITAL-TO-ANALOG CONVERTER
Download  26 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

DAC5672A 数据表(HTML) 1 Page - Texas Instruments

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FEATURES
APPLICATIONS
DESCRIPTION
DAC5672A
www.ti.com................................................................................................................................................... SLAS528A – SEPTEMBER 2007 – REVISED MAY 2009
DUAL, 14-BIT 275 MSPS DIGITAL-TO-ANALOG CONVERTER
• Package: 48-Pin Thin-Quad Flat Pack (TQFP)
• 14-Bit Dual Transmit Digital-to-Analog
Converter (DAC)
• Cellular Base Transceiver Station Transmit
• 275 MSPS Update Rate
Channel
• Single Supply: 3 V to 3.6 V
CDMA: W-CDMA, CDMA2000, IS-95
• High Spurious-Free Dynamic Range (SFDR):
TDMA: GSM, IS-136, EDGE/UWC-136
84 dBc at 5 MHz
• Medical/Test Instrumentation
• High Third-Order Two-Tone Intermodulation
• Arbitrary Waveform Generators (ARB)
(IMD3): 79 dBc at 15.1 MHz and 16.1 MHz
• Direct Digital Synthesis (DDS)
• WCDMA Adjacent Channel Leakage Ratio
• Cable Modem Termination System (CMTS)
(ACLR): 78 dB at Baseband
• 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
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-
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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