AD9958

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. 05252-000 Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAn...