AD9959BCPZ-REEL7

Overview

The AD9959BCPZ-REEL7 is a four-channel direct digital synthesizer (DDS) integrated circuit manufactured by Analog Devices Inc. It features four synchronized DDS cores operating at a maximum sample rate of 500 MSPS, each equipped with a 10-bit digital-to-analog converter (DAC). The device provides independent frequency, phase, and amplitude control for each channel, utilizing a 32-bit frequency tuning word, 14-bit phase offset resolution, and 10-bit output amplitude scaling resolution. It supports dual supply operation with a 1.8 V core and 3.3 V I/O interface. The component operates within an industrial temperature range of -40°C to +85°C and is housed in a 56-lead LFCSP package.

Feature Summary

• Four synchronized DDS channels with independent frequency, phase, and amplitude control capabilities
• Integrated linear frequency, phase, and amplitude sweeping functionality for radar and instrumentation applications
• Supports up to 16 levels of pin-selectable modulation including FSK, PSK, and ASK
• Built-in reference clock multiplier (PLL) ranging from 4x to 20x and selectable crystal oscillator support

Applications

• Agile local oscillators
• Phased array radars and sonars
• Instrumentation systems
• Synchronized clocking
• RF source for Acousto-Optic Tunable Filters (AOTF)

Procurement Notes

Verify the specific ordering suffix REEL7 corresponds to tape and reel packaging when sourcing components. Confirm that the DVDD_I/O pin requires a 3.3 V supply connection while the DDS core operates at 1.8 V. Ensure the exposed pad on the bottom of the 56-lead LFCSP package is soldered to ground for proper electrical connection and thermal management during installation.

Selection Notes

Select this component when multiple synchronized signal sources are required within a single footprint. The device allows correction of imbalances caused by analog processing or PCB layout mismatches through independent channel control. Consider the internal PLL if a lower frequency reference clock is available, as it can multiply the input up to the 500 MSPS limit. Verify that the serial I/O port configuration matches the host controller's SPI requirements.

Part Context

The AD9959 belongs to the AD9XXX series of direct digital synthesizers developed by Analog Devices. It represents a high-performance solution for generating precise analog waveforms from digital inputs. The device integrates advanced DDS technology to deliver low power dissipation alongside high spectral purity. It is designed to replace discrete multi-channel synthesis solutions, offering matched latencies and excellent channel-to-channel isolation.

Replacement Considerations

Public confirmed substitute part numbers: AD9958.