Overview
The AD9742ACPRL7 is a 12-bit, high-performance digital-to-analog converter (DAC) from Analog Devices Inc., part of the TxDAC family. This device is optimized for the transmit signal path of communication systems and offers exceptional AC and DC performance. It supports update rates up to 210 MSPS, making it suitable for high-speed applications. The AD9742 is designed with low power dissipation, making it ideal for portable and low-power applications, and it includes a power-down mode to reduce standby power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 | - | - | Bits |
| Update Rate | - | - | 210 | MSPS |
| Power Supply | 2.7 | - | 3.6 | V |
| Power Dissipation (Full Performance) | - | - | 135 | mW |
| Power Dissipation (Low Power Mode) | - | - | 60 | mW |
| Power Dissipation (Standby) | - | - | 15 | mW |
| Full-Scale Current Output | - | - | 20 | mA |
| Reference Voltage | - | 1.2 | - | 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 complete CMOS DAC function operating on 135 mW from a 2.7 V to 3.6 V single supply.
- On-chip 1.2 V temperature-compensated band gap voltage reference.
- Segmented current source architecture combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance.
- Edge-triggered input latches and support for 3 V CMOS logic families.
- Power-down mode reducing standby power dissipation to approximately 15 mW.
- Data input supports two's complement or straight binary data coding.
Applications
The AD9742 is specifically optimized for the transmit signal path of communication systems, making it suitable for a variety of high-speed communication applications such as:
- Wireless communication systems.
- Cable infrastructure.
- Radar and military communication systems.
- Portable and low-power communication devices.
Q & A
- What is the resolution of the AD9742? The AD9742 has a 12-bit resolution.
- What is the maximum update rate of the AD9742? The AD9742 supports update rates up to 210 MSPS.
- What is the power supply range for the AD9742? The AD9742 operates from a 2.7 V to 3.6 V single supply.
- How much power does the AD9742 consume in full performance mode? The AD9742 consumes approximately 135 mW in full performance mode.
- Does the AD9742 have a power-down mode? Yes, the AD9742 has a power-down mode that reduces standby power dissipation to approximately 15 mW.
- What types of data coding does the AD9742 support? The AD9742 supports two's complement and straight binary data coding.
- What is the full-scale current output of the AD9742? The full-scale current output of the AD9742 can be set up to 20 mA.
- What is the reference voltage of the AD9742? The AD9742 includes a 1.2 V temperature-compensated band gap voltage reference.
- In what packages is the AD9742 available? The AD9742 is available in 28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP packages.
- What are some typical applications of the AD9742? The AD9742 is typically used in wireless communication systems, cable infrastructure, radar and military communication systems, and portable communication devices.
