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DAC1205D650 Arkusz danych(PDF) 1 Page - NXP Semiconductors |
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DAC1205D650 Arkusz danych(HTML) 1 Page - NXP Semiconductors |
1 / 42 page 1. General description The DAC1205D650 is a high-speed 12-bit dual-channel Digital-to-Analog Converter (DAC) with selectable 2 ×, 4× or 8× interpolating filters optimized for multi-carrier wireless transmitters. Thanks to its digital on-chip modulation, the DAC1205D650 allows the complex I and Q inputs to be converted up from BaseBand (BB) to IF. The mixing frequency is adjusted using a Serial Peripheral Interface (SPI) with a 32-bit Numerically Controlled Oscillator (NCO). The phase is controlled by a 16-bit register. Two modes of operation are available: separate data ports or a single interleaved high-speed data port. In the Interleaved mode, the input data stream is demultiplexed into its original I and Q data and then latched. The DAC1205D650 also includes a 2 ×, 4× and 8× clock multiplier which provides the appropriate internal clocks and an internal regulator to adjust the output full-scale current. 2. Features DAC1205D650 Dual 12-bit DAC, up to 650 Msps; 2 × 4× and 8× interpolating Rev. 01 — 28 July 2009 Product data sheet I Dual 12-bit resolution I IMD3: 79 dBc; fs = 640 Msps; fo =96MHz I 650 Msps maximum update rate I ACPR: 68 dB; 2 carriers WCDMA; fs = 614.4 Msps; fo = 115.2 MHz; PLL on I Selectable 2×, 4× or 8× interpolation filters I Typical 0.95 W power dissipation at 4× interpolation I Input data rate up to 160 Msps I Power-down and Sleep modes I Very low noise cap-free integrated PLL I Differential scalable output current from 1.6 mA to 22 mA I 32-bit programmable NCO frequency I On-chip 1.25 V reference I Dual-port or Interleaved data modes I External analog offset control (10-bit auxiliary DACs) I 1.8 V and 3.3 V power supplies I Internal digital offset control I LVDS compatible clock I Inverse (sin x) / x function I Two’s complement or binary offset data format I Fully compatible SPI port I 3.3 V CMOS input buffers I Industrial temperature range from −40 °C to +85 °C |
Podobny numer części - DAC1205D650 |
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Podobny opis - DAC1205D650 |
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