Catalog
Dual, 16-Bit, 12.6 GSPS RF DAC with Wideband Channelizers
Key Features
• Supports multiband wireless applications3 bypassable, complex data input channels per RF DAC3.08 GSPS maximum complex input data rate per input channel1 independent NCO per input channel
• 3 bypassable, complex data input channels per RF DAC
• 3.08 GSPS maximum complex input data rate per input channel
• 1 independent NCO per input channel
• Proprietary, low spurious and distortion design2-tone IMD3 = −83 dBc at 1.84GHz, −7 dBFS/tone RF outputSFDR <−80 dBc at 1.84 GHz, −7 dBFS RF output
• 2-tone IMD3 = −83 dBc at 1.84GHz, −7 dBFS/tone RF output
• SFDR <−80 dBc at 1.84 GHz, −7 dBFS RF output
• Flexible 8-lane, 15.4 Gbps JESD204B interfaceSupports single-band and multiband use casesSupports 12-bit high density mode for increased data throughput
• Supports single-band and multiband use cases
• Supports 12-bit high density mode for increased data throughput
• Multiple chip synchronizationSupports JESD204B Subclass 1
• Supports JESD204B Subclass 1
• Selectable interpolation filter for a complete set of input data rates1×, 2×, 3×, 4×, 6×, and 8× configurable data channel interpolation1×, 2×, 4×, 6×, 8×, and 12× configurable final interpolation
• 1×, 2×, 3×, 4×, 6×, and 8× configurable data channel interpolation
• 1×, 2×, 4×, 6×, 8×, and 12× configurable final interpolation
• Final 48-bit NCO that operates at the DAC rate to support frequency synthesis up to 6 GHz
• Transmit enable function allows extra power saving and downstream circuitry protection
• High performance, low noise PLL clock multiplierSupports 12.6 GSPS DAC update rateObservation ADC clock driver with selectable divide ratios
• Supports 12.6 GSPS DAC update rate
• Observation ADC clock driver with selectable divide ratios
• Low power2.54 W with 2 DACs at 12 GSPS, DAC PLL on
• 2.54 W with 2 DACs at 12 GSPS, DAC PLL on
• 10 mm × 10 mm, 144-ball BGA_ED with metal enhanced thermal lid, 0.80 mm pitch
Description
AI
The AD9176 is a high performance, dual, 16-bit digital-to-analog converter (DAC) that supports DAC sample rates up to 12.6 GSPS. The device features an 8-lane, 15.4 Gbps JESD204B data input port, a high performance, on-chip DAC clock multiplier, and digital signal processing capabilities targeted at single-band and multiband direct to radio frequency (RF) wireless applications.The AD9176 features three complex data input channels per RF DAC datapath. Each input channel is fully bypassable. Each data input channel (or channelizer) includes a configurable gain stage, an interpolation filter, and a channel numerically controlled oscillator (NCO) for flexible, multiband frequency planning. The AD9176 supports an input data rate of up to a 3.08 GSPS complex (inphase/quadrature (I/Q)), or up to 6.16 GSPS non-complex (real), and is capable of allocating multiple complex input data streams to the assigned channels for individual processing. Each group of three channelizers is summed into a respective main datapath for additional processing when needed. Each main datapath includes an interpolation filter and one 48-bit main NCO ahead of the RF DAC core. Using the modulator switch, the outputs of a main datapath can be either routed to DAC0 alone for operating as a single DAC, or routed to both DAC0 and DAC1 for operating as a dual, intermediate frequency DAC (IF DAC).The AD9176 also supports ultrawide data rate modes that allow bypassing the channelizers and main datapaths to provide maximum data rates of up to 6.16 GSPS as a single, 16-bit DAC, up to 3.08 GSPS as a dual, 16-bit DAC, or up to 4.1 GSPS as a dual, 12-bit DAC.The AD9176 is available in a 144-ball BGA_ED package.ApplicationsWireless communications infrastructureMultiband base station radiosMicrowave/E-band backhaul systemsInstrumentation, automatic test equipment (ATE)Radars and jammersProduct HighlightsA low power, multichannel, dual DAC design reduces power consumption in higher bandwidth and multichannel applications, while maintaining performance.Supports single-band and multiband wireless applications with three bypassable complex data channels per RF DAC, or configurations that use the two main datapaths as two wideband complex data channels when using the built in modulator switch.A maximum complex data rate (per I or Q) of up to 3.08 GSPS with 16-bit resolution, and up to 4.1 GSPS with 12-bit resolution. The AD9176 can be alternatively configured as a dual DAC, with each DAC operating across an independent JESD204B link, at the previously described data rates.Ultrawide bandwidth single-DAC modes, supporting up to 6.16 GSPS data rates with 16-bit resolution.
