PDF AD9958 Data sheet ( Hoja de datos )

Número de pieza	AD9958
Descripción	500 MSPS DDS
Fabricantes	Analog Devices
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Data Sheet FEATURES 2 synchronized DDS channels @ 500 MSPS Independent frequency/phase/amplitude control between channels Matched latencies for frequency/phase/amplitude changes Excellent channel-to-channel isolation (>72 dB) Linear frequency/phase/amplitude sweeping capability Up to 16 levels of frequency/phase/amplitude modulation (pin-selectable) 2 integrated 10-bit digital-to-analog converters (DACs) Individually programmable DAC full-scale currents 0.12 Hz or better frequency tuning resolution 14-bit phase offset resolution 10-bit output amplitude scaling resolution Serial I/O port interface (SPI) with 800 Mbps data throughput Software-/hardware-controlled power-down Dual supply operation (1.8 V DDS core/3.3 V serial I/O) Multiple device synchronization Selectable 4× to 20× REFCLK multiplier (PLL) Selectable REFCLK crystal oscillator 56-lead LFCSP 2-Channel, 500 MSPS DDS with 10-Bit DACs AD9958 APPLICATIONS Agile local oscillators Phased array radars/sonars Instrumentation Synchronized clocking RF source for AOTF Single-side band suppressed carriers Quadrature communications FUNCTIONAL BLOCK DIAGRAM AD9958 (2) 500MSPS DDS CORES 10-BIT DAC 10-BIT DAC RECONSTRUCTED SINE WAVE RECONSTRUCTED SINE WAVE SYSTEM CLOCK SOURCE MODULATION CONTROL REF CLOCK INPUT CIRCUITRY TIMING AND CONTROL USER INTERFACE Figure 1. Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2005–2016 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com 1 page Data Sheet Parameter 75.1 MHz Analog Output (±50 kHz) 75.1 MHz Analog Output (±250 kHz) 75.1 MHz Analog Output (±1 MHz) 100.3 MHz Analog Output (±10 kHz) 100.3 MHz Analog Output (±50 kHz) 100.3 MHz Analog Output (±250 kHz) 100.3 MHz Analog Output (±1 MHz) 200.3 MHz Analog Output (±10 kHz) 200.3 MHz Analog Output (±50 kHz) 200.3 MHz Analog Output (±250 kHz) 200.3 MHz Analog Output (±1 MHz) PHASE NOISE CHARACTERISTICS Residual Phase Noise @ 15.1 MHz (fOUT) @ 1 kHz Offset @ 10 kHz Offset @ 100 kHz Offset @ 1 MHz Offset Residual Phase Noise @ 40.1 MHz (fOUT) @ 1 kHz Offset @ 10 kHz Offset @ 100 kHz Offset @ 1 MHz Offset Residual Phase Noise @ 75.1 MHz (fOUT) @ 1 kHz Offset @ 10 kHz Offset @ 100 kHz Offset @ 1 MHz Offset Residual Phase Noise @ 100.3 MHz (fOUT) @ 1 kHz Offset @ 10 kHz Offset @ 100 kHz Offset @ 1 MHz Offset Residual Phase Noise @ 15.1 MHz (fOUT) with REFCLK Multiplier Enabled 5× @ 1 kHz Offset @ 10 kHz Offset @ 100 kHz Offset @ 1 MHz Offset Residual Phase Noise @ 40.1 MHz (fOUT) with REFCLK Multiplier Enabled 5× @ 1 kHz Offset @ 10 kHz Offset @ 100 kHz Offset @ 1 MHz Offset Residual Phase Noise @ 75.1 MHz (fOUT) with REFCLK Multiplier Enabled 5× @ 1 kHz Offset @ 10 kHz Offset @ 100 kHz Offset @ 1 MHz Offset Residual Phase Noise @ 100.3 MHz (fOUT) with REFCLK Multiplier Enabled 5× @ 1 kHz Offset @ 10 kHz Offset @ 100 kHz Offset @ 1 MHz Offset Min Typ Max −85 −83 −82 −87 −85 −83 −81 −87 −85 −83 −81 −150 −159 −165 −165 −142 −151 −160 −162 −135 −146 −154 −157 −134 −144 −152 −154 −139 −149 −153 −148 −130 −140 −145 −139 −123 −134 −138 −132 −120 −130 −135 −129 Rev. C \| Page 5 of 44 AD9958 Unit Test Conditions/Comments dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz 5 Page Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS REF LVL 0dBm 0 –10 DELTA 1 (T1) –71.73dB 4.50901804MHz RBW VBW SWT 20kHz 20kHz 1.6s RF ATT UNIT 20dB dB A –20 1AP –30 –40 –50 –60 –70 –80 –90 –100 START 0Hz 25MHz/DIV STOP 250MHz Figure 4. Wideband SFDR, fOUT = 1.1 MHz, fCLK = 500 MSPS REF LVL 0dBm 0 –10 1 DELTA 1 (T1) RBW –62.84dB VBW 40.08016032MHz SWT 20kHz 20kHz 1.6s RF ATT UNIT 20dB dB A –20 1AP –30 –40 –50 –60 –70 –80 –90 –100 START 0Hz 25MHz/DIV STOP 250Hz Figure 5. Wideband SFDR, fOUT = 40.1 MHz, fCLK = 500 MSPS REF LVL 0dBm 0 –10 DELTA 1 (T1) –59.04dB 100.70140281MHz RBW VBW SWT 1 20kHz 20kHz 1.6s RF ATT UNIT 20dB dB A –20 1AP –30 –40 –50 –60 –70 –80 –90 –100 START 0Hz 25MHz/DIV STOP 250MHz Figure 6. Wideband SFDR, fOUT = 100.3 MHz, fCLK = 500 MSPS AD9958 REF LVL 0dBm 0 1 –10 DELTA 1 (T1) RBW –69.47dB VBW 30.06012024MHz SWT 20kHz 20kHz 1.6s RF ATT UNIT 20dB dB A –20 1AP –30 –40 –50 –60 –70 –80 –90 –100 START 0Hz 25MHz/DIV STOP 250MHz Figure 7. Wideband SFDR, fOUT = 15.1 MHz, fCLK = 500 MSPS REF Lv] 0dBm 0 –10 DELTA 1 (T1) RBW –60.13dB VBW 75.15030060MHz SWT 1 20kHz 20kHz 1.6s RF ATT UNIT 20dB dB A –20 1AP –30 –40 –50 –60 –70 –80 –90 –100 START 0Hz 25MHz/DIV STOP 250MHz Figure 8. Wideband SFDR, fOUT = 75.1 MHz, fCLK = 500 MSPS REF LVL 0dBm 0 –10 DELTA 1 (T1) RBW –53.84dB VBW –101.20240481MHz SWT 20kHz 20kHz 1.6s RF ATT UNIT 1 20dB dB A –20 1AP –30 –40 –50 –60 –70 –80 –90 –100 START 0Hz 25MHz/DIV STOP 250MHz Figure 9. Wideband SFDR, fOUT = 200.3 MHz, fCLK = 500 MSPS Rev. C \| Page 11 of 44 11 Page

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