Overview
The AD9742ARZRL, produced by Analog Devices Inc., is a 12-bit, high-performance digital-to-analog converter (DAC) that is part of the TxDAC family. This family includes pin-compatible 8-, 10-, 12-, and 14-bit DACs, optimized for the transmit signal path of communication systems. The AD9742 offers exceptional AC and DC performance, supporting update rates up to 210 MSPS. It is designed for low power consumption, making it suitable for portable and low power applications. The DAC features a segmented current source architecture combined with a proprietary switching technique to enhance dynamic performance and reduce spurious components.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | - | - | 12 bits | - |
| Update Rate | - | - | 210 MSPS | - |
| Supply Voltage | 2.7 V | 3.3 V | 3.6 V | V |
| Power Dissipation (Typical) | - | 135 mW | - | mW |
| Power Dissipation (Sleep Mode) | - | 15 mW | - | mW |
| Full-Scale Current Output | - | 20 mA | - | mA |
| Voltage Reference | - | 1.2 V | - | V |
| Package Options | - | 28-Lead SOIC, 28-Lead TSSOP, 32-Lead LFCSP | - | - |
Key Features
- High-speed, single-ended CMOS clock input supporting up to 210 MSPS conversion rate.
- Low power operation with a typical power dissipation of 135 mW and a sleep mode reducing standby power to approximately 15 mW.
- Segmented current source architecture combined with a proprietary switching technique to enhance dynamic performance and reduce spurious components.
- Edge-triggered input latches and a 1.2 V temperature-compensated band gap voltage reference for a complete monolithic DAC solution.
- Support for 3 V CMOS logic families and data input in twos complement or straight binary coding.
- Industry-standard package options including 28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP.
Applications
The AD9742ARZRL is specifically optimized for the transmit signal path of communication systems. It is suitable for various applications requiring high-speed, high-resolution DACs, such as:
- Wireless communication systems
- Cable infrastructure
- Portable and low power communication devices
- High-speed data acquisition and signal processing systems
Q & A
- What is the resolution of the AD9742ARZRL DAC?
The AD9742ARZRL has a resolution of 12 bits.
- What is the maximum update rate of the AD9742ARZRL?
The AD9742ARZRL supports update rates up to 210 MSPS.
- What are the supply voltage ranges for the AD9742ARZRL?
The supply voltage ranges from 2.7 V to 3.6 V.
- How much power does the AD9742ARZRL typically consume?
The typical power dissipation is 135 mW, with a sleep mode reducing standby power to approximately 15 mW.
- What types of packages are available for the AD9742ARZRL?
The AD9742ARZRL is available in 28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP packages.
- What is the full-scale current output of the AD9742ARZRL?
The full-scale current output is typically 20 mA).
- Does the AD9742ARZRL have an integrated voltage reference?
Yes, it includes a 1.2 V temperature-compensated band gap voltage reference).
- What logic families are supported by the digital inputs of the AD9742ARZRL?
The digital inputs support 3 V CMOS logic families).
- Can the AD9742ARZRL operate in low power mode?
Yes, the power dissipation can be reduced to a mere 60 mW with a slight degradation in performance by lowering the full-scale current output, and a sleep mode reduces the standby power dissipation to approximately 15 mW).
- What is the architecture of the AD9742ARZRL's current sources?
The AD9742ARZRL uses a segmented current source architecture combined with a proprietary switching technique to enhance dynamic performance and reduce spurious components).
