AD9958BCPZ-REEL7

This is a dual-channel synchronous direct digital frequency synthesizer (DDS) launched by Analog Devices, integrating two independent DDS cores and 10-bit high-speed DAC inside one chip. The two channels share the same reference clock to achieve inherent high-precision synchronization, widely used for RF signal generation, quadrature signal output and agile frequency source development.

AD9958 stands for dual-channel 500MSPS high-performance DDS series. BCPZ refers to 56-pin exposed pad LFCSP compact surface mount packaging. REEL7 represents standard long tape-and-reel reel packaging for mass automated SMT production mounting.

The system main clock rate reaches 500 MSPS, equipped with 32-bit frequency tuning word, the minimum frequency resolution can reach 0.12Hz, supporting ultra-fine frequency adjustment and fast frequency hopping switching. Each channel is independently programmable in frequency, phase and amplitude: 14-bit phase adjustment resolution, 10-bit amplitude scaling control, which can compensate amplitude and phase mismatch caused by peripheral filter circuits and PCB wiring differences between two channels.

Built-in programmable PLL frequency multiplier, the reference clock can be multiplied by 4~20 times flexibly, reducing the frequency requirement of external crystal oscillator. It supports multiple modulation modes including FSK, PSK, ASK, and linear frequency sweep, phase sweep and amplitude sweep functions, which is very suitable for chirp signal generation required by ranging radarAnalog Dev….

Dual power supply design: DDS core adopts 1.8V power supply, digital IO interface supports 3.3V voltage level, perfectly compatible with mainstream FPGA and MCU control systems. Serial communication interface is compatible with SPI, supports multi-bit parallel transmission to improve register configuration speed, maximum throughput up to 800Mbps. Full-scale output current of each DAC channel is 1.25mA, with excellent spurious free dynamic range performance to guarantee clean RF output spectrum.

Multiple chips can be cascaded and synchronized through dedicated synchronous pins to expand multi-channel phase-coherent signal output system. It has built-in hardware and software power-down mode to cut down idle power consumption.

56-pin LFCSP-VQ leadless exposed pad packaging with overall dimension 8mm×8mm. The bottom large-area metal heat dissipation pad effectively dissipates heat generated during continuous high-frequency operation and stabilizes internal oscillation performance. Moisture sensitivity grade MSL3, all reflow soldering operations must be completed within 168 hours after opening the original vacuum packaging. Standard reel continuous feeding packaging is adopted to match fully automatic placement equipment on production lines.

Continuous stable operating temperature range covers -40℃ ~ +85℃, adapting to indoor laboratory instruments, communication equipment cabinets and industrial testing equipment with temperature fluctuations. The whole chip adopts lead-free manufacturing process and complies with global environmental material restriction regulations. Highly integrated dual-channel synchronous architecture avoids phase deviation problems caused by using two separate single-channel DDS chips, simplifies hardware circuit design and reduces overall equipment BOM cost.

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LXB Semicon supplies original Analog Devices AD9958BCPZ-REEL7 dual-channel synchronous DDS signal synthesizer chip