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DAC5687-EP Fiches technique(PDF) 1 Page - Texas Instruments |
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DAC5687-EP Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 75 page www.ti.com FEATURES APPLICATIONS DESCRIPTION DAC5687-EP SGLS333 – JUNE 2006 16-BIT 500-MSPS 2 ×–8× INTERPOLATING DUAL-CHANNEL DIGITAL-TO-ANALOG CONVERTER (DAC) • Cellular Base Transceiver Station Transmit • Controlled Baseline Channel – One Assembly – CDMA: W-CDMA, CDMA2000, TD-SCDMA – One Test Site – TDMA: GSM, IS-136, EDGE/UWC-136 – One Fabrication Site – OFDM: 802.16 • Extended Temperature Performance of • Cable Modem Termination System –55 °C to 125°C • Enhanced Diminishing Manufacturing Sources (DMS) Support The DAC5687 is a dual-channel 16-bit high-speed • Enhanced Product-Change Notification digital-to-analog converter (DAC) with integrated 2 ×, • Qualification Pedigree (1) 4 ×, and 8× interpolation filters, a complex numerically controlled oscillator (NCO), on-board clock multiplier, • 500 MSPS IQ compensation, and on-chip voltage reference. • Selectable 2 ×–8× Interpolation The DAC5687 is pin compatible to the DAC5686, • On-Chip PLL/VCO Clock Multiplier requiring only changes in register settings for most applications, and offers additional features and • Full IQ Compensation Including Offset, Gain, superior linearity, noise, crosstalk, and phase-locked and Phase loop (PLL) noise performance. • Flexible Input Options The DAC5687 has six signal processing blocks: two – FIFO With Latch on External or Internal interpolate by two digital filters, a fine-frequency Clock mixer with 32-bit NCO, a quadrature modulation – Even/Odd Multiplexed Input compensation block, another interpolate by two – Single-Port Demultiplexed Input digital filter, and a coarse-frequency mixer with Fs/2 or Fs/4. The different modes of operation enable or • Complex Mixer With 32-Bit Numerically bypass the signal processing blocks. Controlled Oscillator (NCO) The coarse and fine mixers can be combined to span • Fixed-Frequency Mixer With Fs/4 and Fs/2 a wider range of frequencies with fine resolution. The • 1.8-V or 3.3-V I/O Voltage DAC5687 allows both complex or real output. • On-Chip 1.2-V Reference Combining the frequency upconversion and complex output produces a Hilbert Transform pair that is • Differential Scalable Output: 2 mA to 20 mA output from the two DACs. An external RF • Pin Compatible to DAC5686 quadrature modulator then performs the final single • High Performance sideband upconversion. – 81-dBc Adjacent Channel Leakage Ratio The IQ compensation feature allows optimization of (ACLR) WCDMA TM1 at 30.72 MHz phase, gain, and offset to maximize sideband – 72-dBc ACLR WCDMA TM1 at 153.6 MHz rejection and minimize LO feedthrough for an analog quadrature modulator. • Package: 100-Pin HTQFP (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. 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. PowerPAD is a trademark of Texas Instruments. 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. |
Numéro de pièce similaire - DAC5687-EP |
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Description similaire - DAC5687-EP |
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