Overview
The AD9767ASTRL, produced by Analog Devices Inc., is a high-speed, dual-port, 2-channel, 14-bit CMOS Digital-to-Analog Converter (DAC). This component integrates two high-quality TxDAC+® cores, a voltage reference, and digital interface circuitry into a compact 48-lead LQFP package. It is optimized for processing I and Q data in communications applications, offering exceptional AC and DC performance with update rates of up to 125 MSPS.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 14 | 14 | 14 | Bits |
| Maximum Output Update Rate (fCLK) | 125 | 125 | 125 | MSPS |
| Output Settling Time (tST) to 0.1% | 35 | 35 | 35 | ns |
| Output Propagation Delay (tPD) | 1 | 1 | 1 | ns |
| Gain Matching | 0.1% | % of Full Scale | ||
| Offset Error | 0.02% | % of Full Scale | ||
| Power Supply | 3.3 | 5 | V | |
| Power Dissipation | 380 | mW | ||
| Package Type | 48-Lead LQFP |
Key Features
- Dual 14-bit, 125 MSPS DACs optimized for low distortion performance and flexible transmission of I and Q information.
- Excellent SFDR to Nyquist @ 5 MHz output: 75 dBc.
- Gain matching typically 0.1% of full scale, and offset error better than 0.02%.
- On-chip 1.2 V temperature-compensated band gap voltage reference.
- Dual-port or interleaved data interface with separate write inputs and clocks for each DAC port.
- Low power operation with 380 mW power dissipation from a single 3.3 V to 5 V supply, and a sleep mode for low power idle periods.
- Segmented current source architecture combined with a proprietary switching technique to reduce glitch energy and maximize dynamic accuracy.
Applications
- Communications: Base stations, digital synthesis, and quadrature modulation.
- 3D ultrasound systems.
- Other high-speed data conversion applications requiring precise I and Q data processing.
Q & A
- What is the resolution of the AD9767ASTRL DAC?
The AD9767ASTRL has a resolution of 14 bits.
- What is the maximum output update rate of the AD9767ASTRL?
The maximum output update rate is 125 MSPS.
- What is the typical gain matching of the AD9767ASTRL?
The gain matching is typically 0.1% of full scale.
- What is the power supply range for the AD9767ASTRL?
The power supply range is from 3.3 V to 5 V.
- What is the power dissipation of the AD9767ASTRL?
The power dissipation is 380 mW.
- Does the AD9767ASTRL have an on-chip voltage reference?
Yes, it includes a 1.2 V temperature-compensated band gap voltage reference.
- What types of interfaces does the AD9767ASTRL support?
The AD9767ASTRL supports dual-port or interleaved data interfaces.
- What are the typical applications of the AD9767ASTRL?
Typical applications include communications (base stations, digital synthesis, quadrature modulation), 3D ultrasound systems, and other high-speed data conversion applications.
- How is the full-scale current of the DACs controlled?
The full-scale current can be set independently using two external resistors or using a single external resistor for both DACs.
- What is the package type of the AD9767ASTRL?
The package type is a 48-lead LQFP.
