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DAC5652IPFBRG4 Arkusz danych(PDF) 1 Page - Texas Instruments |
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DAC5652IPFBRG4 Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 27 page DAC5652 www.ti.com SLAS452C – MARCH 2005 – REVISED DECEMBER 2010 DUAL, 10-BIT 275 MSPS DIGITAL-TO-ANALOG CONVERTER Check for Samples: DAC5652 1 FEATURES • Power-Down Mode: 9 mW • 10-Bit Dual Transmit Digital-to-Analog • Package: 48-Pin Thin-Quad Flat Pack (TQFP) Converter (DAC) APPLICATIONS • 275 MSPS Update Rate • Cellular Base Transceiver Station Transmit • Single Supply: 3.0 V to 3.6 V Channel • High Spurious-Free Dynamic Range (SFDR): – CDMA: W-CDMA, CDMA2000, IS-95 80 dBc at 5 MHz – TDMA: GSM, IS-136, EDGE/UWC-136 • High Third-Order Two-Tone Intermodulation • Medical/Test Instrumentation (IMD3): 78 dBc at 15.1 MHz and 16.1 MHz • Arbitrary Waveform Generators (ARB) • Independent or Single Resistor Gain Control • Direct Digital Synthesis (DDS) • Dual or Interleaved Data • Cable Modem Termination System (CMTS) • On-Chip 1.2-V Reference • Low Power: 290 mW DESCRIPTION The DAC5652 is a monolithic, dual-channel, 10-bit, high-speed DAC with on-chip voltage reference. Operating with update rates of up to 275 MSPS, the DAC5652 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 of 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 DAC5652 has two, 10-bit, parallel input ports with separate clocks and data latches. For flexibility, the DAC5652 also supports multiplexed data for each DAC on one port when operating in the interleaved mode. The DAC5652 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 DAC5652 is available in a 48-pin TQFP package. Pin compatibility between family members provides 10-bit (DAC5652), 12-bit (DAC5662), and 14-bit (DAC5672) resolution. Furthermore, the DAC5652 is pin compatible to the DAC2900 and AD9763 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 © 2005–2010, 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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