Overview
The AD9751AST, produced by Analog Devices Inc., is a dual muxed port, ultrahigh speed, single-channel, 10-bit CMOS Digital-to-Analog Converter (DAC). It integrates a high-quality 10-bit TxDAC+ core, a voltage reference, and digital interface circuitry into a compact 48-lead LQFP package. This DAC is optimized for ultrahigh speed applications, supporting update rates up to 300 MSPS, making it suitable for high-speed data conversion in various demanding environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 10 bits | |||
| Conversion Rate | 300 MSPS | |||
| Supply Voltage | 3.0 V | 3.6 V | V | |
| Power Consumption | 155 mW | mW | ||
| Full-Scale Current | 2 mA | 20 mA | mA | |
| Package Type | 48-Lead LQFP | |||
| Operating Temperature | -40°C | 85°C | °C |
Key Features
- Dual 10-bit latched, multiplexed input ports allowing high-speed data conversion through either a single or dual port input.
- Ultrahigh speed conversion rate of up to 300 MSPS.
- On-chip voltage reference with a temperature-compensated band gap voltage reference of 1.20 V.
- Low power operation, consuming 155 mW from a single 3.0 V to 3.6 V supply.
- Segmented current source architecture combined with proprietary switching techniques to reduce glitch energy and maximize dynamic accuracy.
- Differential current outputs supporting single-ended or differential applications.
- PLL that drives the DAC latch at twice the speed of the externally applied clock, enabling data interleaving from two input channels.
Applications
- High-speed data acquisition and signal processing systems.
- Wireless communication systems, including base stations and handsets.
- Medical imaging and diagnostic equipment.
- Aerospace and defense applications requiring high-speed data conversion.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD9751AST DAC? The AD9751AST has a resolution of 10 bits.
- What is the maximum conversion rate of the AD9751AST? The AD9751AST supports conversion rates up to 300 MSPS.
- What is the power consumption of the AD9751AST? The AD9751AST consumes 155 mW of power.
- What is the supply voltage range for the AD9751AST? The AD9751AST operates from a single supply of 3.0 V to 3.6 V.
- Does the AD9751AST have an on-chip voltage reference? Yes, the AD9751AST includes a 1.20 V temperature-compensated band gap voltage reference.
- What is the package type of the AD9751AST? The AD9751AST is available in a 48-lead LQFP package.
- Can the AD9751AST be used in differential applications? Yes, the AD9751AST supports differential current outputs for both single-ended and differential applications.
- How does the PLL in the AD9751AST enhance its performance? The PLL drives the DAC latch at twice the speed of the externally applied clock, enabling data interleaving from two input channels and doubling the output data rate.
- What are some common applications of the AD9751AST? Common applications include high-speed data acquisition, wireless communication systems, medical imaging, aerospace and defense, and test and measurement equipment.
- How is the full-scale current of the AD9751AST adjusted? The full-scale current can be adjusted from 2 mA to 20 mA via an external resistor.
