Overview
The AD9786BSV from Analog Devices Inc. is a high-performance 16-bit digital-to-analog converter (DAC) designed specifically for multicarrier communications architectures. It is part of the TxDAC+ product family and is renowned for its exceptional linearity, noise, and intermodulation distortion performance. This DAC enables the synthesis of multicarrier transmit signals at intermediate frequencies (IFs) of 100 to 300 MHz and beyond, allowing system designers to eliminate up-conversion stages and reduce overall system complexity and cost.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 | - | - | Bits |
| Input Data Rate | - | 200 | - | MSPS |
| Interpolation Factors | - | 2x, 4x, 8x | - | - |
| Integral Linearity Error (INL) | -1.5 | ±0.6 | +1.5 | LSB |
| Differential Linearity Error (DNL) | -0.3 | ±0.3 | +0.3 | LSB |
| Full-Scale Current (IOUTFS) | 10 | - | 20 | mA |
| Analog Supply Voltage (AVDD) | 3.1 | 3.3 | 3.5 | V |
| Digital Supply Voltage (DRVDD) | - | 2.5 | - | V |
| Noise Spectral Density (NSD) @ 10 MHz | - | -164 | - | dBm/Hz |
| IMD @ 10 MHz | - | 90 | - | dBc |
Key Features
- 16-bit resolution with true 16-bit linearity
- Input data rate of up to 200 MSPS
- Selectable 2x, 4x, and 8x interpolation filters
- Flexible clock interface supporting 1 V p-p sine wave, CMOS, and LVPECL in single-ended or differential mode
- On-chip 1.20 V temperature-compensated band gap voltage reference
- Multi-chip synchronization capability for optimized timing and image reject performance
- Differential current output supporting single-ended or differential applications
- Low power operation with sleep mode and adjustable full-scale current
Applications
- Multicarrier and third-generation base stations
- Communications systems requiring high-speed DACs
- Digital synthesis and quadrature modulation
- Intermediate frequency (IF) signal generation
Q & A
- What is the resolution of the AD9786BSV DAC?
The AD9786BSV has a 16-bit resolution. - What are the supported interpolation factors of the AD9786BSV?
The AD9786BSV supports 2x, 4x, and 8x interpolation factors. - What is the input data rate of the AD9786BSV?
The input data rate of the AD9786BSV is up to 200 MSPS. - What types of clock inputs does the AD9786BSV support?
The AD9786BSV supports 1 V p-p sine wave, CMOS, and LVPECL clock inputs in single-ended or differential mode. - Does the AD9786BSV have an on-chip voltage reference?
Yes, the AD9786BSV includes a 1.20 V temperature-compensated band gap voltage reference. - Can multiple AD9786BSV DACs be synchronized?
Yes, multiple AD9786BSV DACs can be synchronized to a single master AD9786 to optimize timing and image reject performance. - What is the full-scale current range of the AD9786BSV?
The full-scale current of the AD9786BSV can be set between 10 mA and 20 mA. - Does the AD9786BSV support low power operation?
Yes, the AD9786BSV has a sleep mode and adjustable full-scale current for low power operation. - What are the typical applications of the AD9786BSV?
The AD9786BSV is typically used in multicarrier and third-generation base stations, digital synthesis, and quadrature modulation. - What is the package type of the AD9786BSV?
The AD9786BSV is available in an 80-lead TQFP (12mm x 12mm) package.
