ADI AD9176BBPZ

The AD9176BBPZ extends the AD917x RF DAC architecture with a layer of digital signal processing that the AD9172BBPZ does not provide: a 48-bit main NCO and main interpolation filter between the channelizer outputs and the DAC core, and a modulator switch that controls how the combined datapath routes to the physical DAC outputs. For radar and electronic warfare designers working with complex modulation schemes, IF DAC configurations, or applications where the three-channelizer frequency plan needs a second stage of upconversion, the AD9176BBPZ provides that capability without external DSP resources. The ultrawide bandwidth single-DAC mode at 6.16 GSPS non-complex is the highest instantaneous bandwidth configuration available in the AD917x family, covering applications where maximum bandwidth from a single DAC output takes priority over multiband flexibility.

AD9176BBPZ Architecture: Main NCO, Modulator Switch, and Ultrawide Bandwidth Modes

The AD9176 datapath operates in two configurable layers. The first layer consists of three bypassable channelizers per DAC, each with an independent NCO, gain stage, and interpolation filter, identical to the AD9172 architecture. The second layer, exclusive to the AD9176, adds a main interpolation filter and 48-bit main NCO that processes the summed output of the three channelizers before the DAC core. This two-stage frequency planning enables scenarios where the channelizers place multiple carriers within a subband, and the main NCO then translates the entire subband to the final RF frequency, a configuration that reduces the NCO tuning resolution requirements at the channelizer level. The modulator switch determines whether the main datapath output feeds DAC0 alone for single-channel maximum performance, or feeds both DAC0 and DAC1 to create a wideband I and Q output pair for direct interface to an analog quadrature modulator. In ultrawide bandwidth mode, both the channelizers and the main datapath are bypassed entirely, connecting the JESD204B data input directly to the DAC core at 6.16 GSPS for the highest achievable instantaneous bandwidth from a single physical DAC output in the AD917x family.

AD9176BBPZ vs AD917x Family: Architecture and Capability Selection

The AD917x family spans four devices with increasing DSP integration and datapath flexibility:

The AD9176BBPZ is the correct selection when both the main NCO second-stage frequency planning and the modulator switch IF DAC routing are required in a dual-channel configuration. For dual-channel applications where the main NCO is not needed and channelizer-level frequency planning is sufficient, the AD9172BBPZ provides the same dual-channel channelizer architecture at lower complexity. For complete transceiver integration with receive ADC cores, the AD9081BBPZ-4D4AC MxFE addresses transmit and receive in a single 28 nm device.

Sourcing the ADI AD9176BBPZ

The AD9176BBPZ tray packaging is the standard format for prototype and qualification builds of the AD9176 in the 144-ball 10mm TEBGA package, with the AD9176BBPZRL tape-and-reel variant available for production volume builds. We carry verified inventory with full lot traceability and anti-counterfeit inspection on every order. Contact us today to confirm availability and request a quote, and our team responds within 24 hours.

• Main NCO provides 48-bit frequency resolution second-stage upconversion beyond the three channelizer NCOs
• Modulator switch enables I and Q output mode for direct interface to analog quadrature modulators without external splitting
• 6.16 GSPS ultrawide bandwidth single-DAC mode provides the highest instantaneous bandwidth in the AD917x family
• Per-DAC independent JESD204B links enable each DAC to operate on a separate data path from an independent FPGA or processor
• On-chip clock multiplier synthesizes the 12.6 GSPS DAC clock from a lower-frequency reference, reducing external clocking infrastructure
• AD9176-FMC-EBZ evaluation board and ADS7-V2EBZ capture platform support rapid development and characterization
• AD9176BBPZRL tape-and-reel variant available for volume production builds without the tray minimum quantity
• Full lot traceability and anti-counterfeit inspection on every order

Frequently Asked Questions (FAQ)

What Is the ADI AD9176BBPZ and How Does It Differ From the AD9172BBPZ?

The AD9176BBPZ is a dual 16-bit 12.6 GSPS RF DAC that adds a 48-bit main NCO, main interpolation filter, and modulator switch to the three-channelizer-per-DAC architecture of the AD9172BBPZ. The main NCO provides a second stage of frequency planning after the channelizer outputs are summed, and the modulator switch enables flexible routing to single-DAC or dual IF DAC output configurations. The AD9172 uses the channelizer outputs directly without the main NCO second stage.

What Is the Modulator Switch and How Does It Enable IF DAC Operation?

The modulator switch controls how the main datapath output routes to the physical DAC outputs. In single-DAC mode, the main datapath routes exclusively to DAC0 for maximum single-channel performance. In IF DAC mode, the modulator switch routes the main datapath to both DAC0 and DAC1 simultaneously, creating a wideband I and Q output pair that connects directly to an analog quadrature modulator for IF upconversion without external signal splitting or combining hardware.

What Is the Ultrawide Bandwidth Single-DAC Mode on the AD9176BBPZ?

Ultrawide bandwidth single-DAC mode bypasses both the three channelizers and the main datapath, connecting the JESD204B data input directly to the DAC core at 6.16 GSPS non-complex data rate with 16-bit resolution. This provides the maximum instantaneous bandwidth available from a single physical DAC output in the AD917x family, appropriate for applications requiring the widest possible output bandwidth from one DAC channel rather than multiband flexibility across multiple channels.

How Does the AD9176BBPZ Compare to the AD9081BBPZ-4D4AC for Wideband Radar Applications?

The AD9081BBPZ-4D4AC integrates four 12 GSPS DAC cores alongside four 4 GSPS ADC cores with 48 DDCs in a 28 nm MxFE device, providing complete transceiver functionality at higher DAC sample rates. The AD9176BBPZ provides two 12.6 GSPS DAC cores with deeper channelizer DSP including the main NCO and modulator switch, but no integrated receive ADC. Choose the AD9176 for transmit-only or external-receiver architectures where the two-stage NCO frequency planning is required. Choose the AD9081 for complete transceiver integration in a single device.

How Do I Request a Quote for the ADI AD9176BBPZ?

Submit an inquiry through our website contact form or email our sales team directly. We will respond within 24 hours with pricing, availability, and lead time, and can discuss long-term supply agreements for radar and EW production programs.