Overview
The AD9779ABSVZRL is a dual, 16-bit, high dynamic range digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is part of the AD9776A/AD9778A/AD9779A family and is designed to provide a sample rate of 1 GSPS, enabling multicarrier generation up to the Nyquist frequency. It is optimized for direct conversion transmission applications, including complex digital modulation and gain and offset compensation. The DAC outputs are designed to interface seamlessly with analog quadrature modulators such as the AD8349. The device operates on 1.8 V and 3.3 V supplies and is manufactured on an advanced 0.18 μm CMOS process.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 | 16 | 16 | Bits |
| Differential Nonlinearity (DNL) | ±0.1 | ±0.65 | ±2.1 | LSB |
| Integral Nonlinearity (INL) | ±0.86 | ±1.5 | ±6.0 | LSB |
| Main DAC Output Current | -1.998 | 1.998 | 1.998 | mA |
| Output Compliance Range (Source) | 0 | 1.6 | 1.6 | V |
| Output Compliance Range (Sink) | 0.8 | 1.6 | 1.6 | V |
| Output Resistance | 1 | 1 | 1 | MΩ |
| Internal Reference Voltage | 1.2 | 1.2 | 1.2 | V |
| Analog Supply Voltages (AVDD33) | 3.13 | 3.3 | 3.47 | V |
| Digital Supply Voltages (DVDD33) | 3.13 | 3.3 | 3.47 | V |
| Operating Temperature Range | -40 | +85 | °C | |
| Power Consumption (1 GSPS, IF = 262.5 MHz) | 980 | 980 | mW |
Key Features
- Dual, 16-bit digital-to-analog converters with a sample rate of 1 GSPS.
- Optimized for direct conversion transmission applications, including complex digital modulation.
- Gain and offset compensation features.
- DAC outputs optimized to interface with analog quadrature modulators like the AD8349.
- Serial peripheral interface (SPI) for programming and readback of internal parameters.
- Full-scale output current programmable over a range of 10 mA to 30 mA.
- Manufactured on an advanced 0.18 μm CMOS process.
- Operates on 1.8 V and 3.3 V supplies.
- Enclosed in 100-lead TQFP packages.
Applications
- Direct conversion transmission systems.
- Complex digital modulation applications.
- Wireless communication systems, including 4G and 5G base stations.
- Radar and electronic warfare systems.
- High-speed data acquisition and signal processing systems.
Q & A
- What is the resolution of the AD9779ABSVZRL DAC?
The AD9779ABSVZRL has a resolution of 16 bits.
- What is the maximum sample rate of the AD9779ABSVZRL?
The maximum sample rate is 1 GSPS.
- What are the typical operating supply voltages for the AD9779ABSVZRL?
The device operates on 1.8 V and 3.3 V supplies.
- How is the full-scale output current of the AD9779ABSVZRL programmed?
The full-scale output current can be programmed over a range of 10 mA to 30 mA.
- What type of interface is used for programming and readback of internal parameters?
A serial peripheral interface (SPI) is used for programming and readback.
- What is the operating temperature range of the AD9779ABSVZRL?
The operating temperature range is from -40°C to +85°C.
- What is the typical power consumption of the AD9779ABSVZRL at 1 GSPS?
The typical power consumption at 1 GSPS is approximately 980 mW.
- What type of package does the AD9779ABSVZRL come in?
The device is enclosed in a 100-lead TQFP package.
- What are some common applications for the AD9779ABSVZRL?
Common applications include direct conversion transmission systems, complex digital modulation, wireless communication systems, radar, and electronic warfare systems.
- What is the significance of the AD9779ABSVZRL's compatibility with analog quadrature modulators?
The compatibility with analog quadrature modulators like the AD8349 allows for seamless integration in systems requiring complex modulation schemes.
