Overview
The AD9778ABSVZ is a dual, 14-bit, high dynamic range digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD9776A/AD9778A/AD9779A family, which offers sample rates of up to 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 ADL537x FMOD series from Analog Devices, Inc.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | - | 14 | - | Bits |
| Differential Nonlinearity (DNL) | ±0.65 | - | ±2.1 | LSB |
| Integral Nonlinearity (INL) | ±1.5 | - | ±6.0 | LSB |
| Sample Rate | - | - | 1 GSPS | - |
| Full-scale Output Current | 10 mA | - | 30 mA | - |
| Supply Voltages | 1.8 V, 3.3 V | - | - | - |
| Power Consumption | - | - | 1.0 W | - |
| Package Type | - | - | 100-lead TQFP | - |
| CMOS Input Logic Levels | 0.8 V (Low), 2.0 V (High) | - | - | - |
| Maximum Input Data Rate | - | - | 300 MSPS (1×), 250 MSPS (2×), 200 MSPS (4×), 100 MSPS (8×) | - |
Key Features
- Dual, 14-bit high dynamic range digital-to-analog converters with a sample rate of up to 1 GSPS.
- Optimized for direct conversion transmission applications, including complex digital modulation and gain and offset compensation.
- DAC outputs optimized to interface seamlessly with analog quadrature modulators such as the ADL537x FMOD series.
- 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 with a total power consumption of 1.0 W.
- Enclosed in a 100-lead thin quad flat package (TQFP).
- A 3-wire interface for programming/readback of many internal parameters.
Applications
- Direct conversion transmission systems.
- Complex digital modulation applications.
- Wireless communication systems, including base stations and repeaters.
- Radar and electronic warfare systems.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD9778ABSVZ DAC?
The AD9778ABSVZ has a resolution of 14 bits.
- What is the maximum sample rate of the AD9778ABSVZ?
The maximum sample rate is 1 GSPS.
- What are the supply voltages for the AD9778ABSVZ?
The device operates on 1.8 V and 3.3 V supplies.
- What is the power consumption of the AD9778ABSVZ?
The total power consumption is 1.0 W.
- What type of package does the AD9778ABSVZ come in?
The device is enclosed in a 100-lead thin quad flat package (TQFP).
- Can the full-scale output current be programmed?
- What is the CMOS input logic level for the AD9778ABSVZ?
The CMOS input logic levels are 0.8 V (Low) and 2.0 V (High).
- What is the maximum input data rate for the AD9778ABSVZ?
The maximum input data rates are 300 MSPS (1×), 250 MSPS (2×), 200 MSPS (4×), and 100 MSPS (8×).
- What type of interface does the AD9778ABSVZ use for programming/readback?
A 3-wire interface is used for programming/readback of many internal parameters.
- What are some common applications of the AD9778ABSVZ?
