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DAC5662A датащи(PDF) 1 Page - Texas Instruments |
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DAC5662A датащи(HTML) 1 Page - Texas Instruments |
1 / 26 page DAC5662A www.ti.com SLAS536B – SEPTEMBER 2007 – REVISED DECEMBER 2010 DUAL, 12-BIT 275 MSPS DIGITAL-TO-ANALOG CONVERTER Check for Samples: DAC5662A 1 FEATURES • Package: 48-Pin TQFP • 12-Bit Dual Transmit DAC APPLICATIONS • 275 MSPS Update Rate • Cellular Base Transceiver Station Transmit • Single Supply: 3 V - 3.6 V Channel • High SFDR: 85 dBc at 5 MHz – CDMA: W-CDMA, CDMA2000, IS-95 • High IMD3: 78 dBc at 15.1 and 16.1 MHz – TDMA: GSM, IS-136, EDGE/UWC-136 • WCDMA ACLR: 70 dB at 30.72 MHz • Medical/Test Instrumentation • Independent or Single Resistor Gain Control • Arbitrary Waveform Generators (ARB) • Dual or Interleaved Data • Direct Digital Synthesis (DDS) • Cable Modem Termination System (CMTS) • On-Chip 1.2-V Reference _ • Low Power: 330 mW • Power-Down Mode: 15 mW DESCRIPTION The DAC5662A is a monolithic, dual-channel 12-bit high-speed digital-to-analog converter (DAC) with on-chip voltage reference. Operating with update rates of up to 275 MSPS, the DAC5662A offers exceptional dynamic performance and 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 DAC5662A has two 12-bit parallel input ports with separate clocks and data latches. For flexibility, the DAC5662A also supports multiplexed data for each DAC on one port when operating in the interleaved mode. The DAC5662A 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 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 DAC5662A is available in a 48-pin thin quad FlatPack (TQFP). Pin compatibility between family members provides 12-bit (DAC5662A) and 14-bit (DAC5672) resolution. Furthermore, the DAC5662A is pin compatible to the DAC2902 and AD9765 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 © 2007–2010, 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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Аналогичное описание - DAC5662A |
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