**AD9787BSVZ: A Comprehensive Technical Overview of the 16-Bit, 2 GSPS High-Speed DAC**

The **AD9787BSVZ** from Analog Devices represents a pinnacle of performance in the realm of digital-to-analog conversion, engineered to meet the stringent demands of modern high-speed communication and signal processing systems. As a **16-bit, 2 GSPS (Giga Samples Per Second)** DAC, it delivers exceptional dynamic performance, resolution, and flexibility, making it a cornerstone component in applications ranging from wireless infrastructure to advanced test and measurement equipment.

**Architectural Innovation and Core Features**

At the heart of the AD9787BSVZ lies a sophisticated core architecture designed for maximum linearity and speed. It utilizes a **current-steering architecture** optimized for 2 GSPS operation, ensuring minimal distortion and high spurious-free dynamic range (SFDR). The device supports a **complex digital mixer** with a 32-bit Numerically Controlled Oscillator (NCO), allowing for flexible carrier placement and direct IF (Intermediate Frequency) synthesis without external components. This feature is critical for eliminating image frequencies and simplifying transmitter design in systems like multi-carrier GSM, LTE, and 5G base stations.

A key attribute of this DAC is its **exceptional dynamic performance**. At high frequencies, it maintains impressive SFDR and SNR (Signal-to-Noise Ratio) figures, which are vital for preserving signal integrity in broadband applications. For instance, it can achieve an SFDR better than 78 dBc at 1 GHz output, underscoring its capability to handle wide bandwidth signals with high fidelity.

**Integration and System-Level Advantages**

The AD9787BSVZ is designed for ease of integration into complex systems. It features a **selectable 2x/4x/8x interpolation filter**, which reduces the data input rate requirement from the digital baseband, thereby relaxing the speed demands on the preceding FPGA or ASIC and minimizing overall system power consumption. Furthermore, the on-chip **clock multiplier PLL** simplifies clocking by generating the required high-speed internal clock from a lower-frequency external reference.

The device includes a **serial peripheral interface (SPI)** for control and configuration, enabling adjustments to output current, gain, and offset. Its **programmable output current** (from 10 mA to 30 mA) allows designers to optimize the load drive for different scenarios, whether driving a passive termination or an active I/Q modulator.

**Target Applications**

This DAC is ideally suited for high-performance applications where bandwidth and precision are paramount. Its primary uses include:

* **Wireless Communication Transmitters:** As the key element in the transmit chain of cellular base stations, supporting multi-carrier generation and wideband signals.

* **Broadband Wireless Systems:** Including point-to-point microwave backhaul and satellite communications.

* **Instrumentation and Test Equipment:** Such as arbitrary waveform generators (AWGs) and high-frequency signal sources that require wide dynamic range and fast switching.

* **Military and Aerospace Systems:** Including electronic warfare (EW) and radar systems that demand robust performance under challenging conditions.

**ICGOOODFIND:** The AD9787VSZ stands as a benchmark for high-speed digital-to-analog conversion, masterfully combining **ultra-high sampling speed**, **exceptional dynamic performance**, and **high integration** to solve complex design challenges in next-generation communication and signal processing systems.

**Keywords:** High-Speed DAC, 16-Bit Resolution, 2 GSPS, Dynamic Performance, Digital Mixer