Overview
The AD9742ARUZ is a 12-bit resolution, wideband, third-generation member of the TxDAC series of high-performance, low-power CMOS digital-to-analog converters (DACs) produced by Analog Devices Inc. This device is specifically optimized for the transmit signal path of communication systems and is part of a family that includes pin-compatible 8-, 10-, 12-, and 14-bit DACs. The AD9742 offers exceptional AC and DC performance, supporting update rates up to 210 MSPS, making it suitable for high-speed applications. Its low power dissipation and power-down mode make it well-suited for portable and low-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 bits | |||
| Update Rate | Up to 210 MSPS | |||
| Power Supply | 2.7 V | 3.3 V | 3.6 V | V |
| Power Dissipation (Full Performance) | 135 mW | |||
| Power Dissipation (Low Power Mode) | 60 mW | |||
| Standby Power Dissipation | Approx. 15 mW | |||
| Full-Scale Output Current | Up to 20 mA | |||
| Package Type | 28-Lead Thin Shrink Small Outline Package (TSSOP) | |||
| Operating Temperature Range | -40°C | 85°C | °C | |
Key Features
- High-speed, single-ended CMOS clock input supporting up to 210 MSPS conversion rate.
- Low power operation: Complete CMOS DAC function operates on 135 mW from a 2.7 V to 3.6 V single supply, with the option to reduce power dissipation to 60 mW by lowering the full-scale current output.
- Power-down mode reduces standby power dissipation to approximately 15 mW.
- 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.
- Industry-standard packages including 28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP.
Applications
The AD9742ARUZ is optimized for the transmit signal path of communication systems, making it suitable for a variety of high-speed and low-power applications, including:
- Wireless communication systems.
- Baseband and IF signal processing.
- Portable and battery-powered devices.
- High-speed data acquisition systems.
- Telecommunication equipment.
Q & A
- What is the resolution of the AD9742ARUZ?
The AD9742ARUZ has a 12-bit resolution.
- What is the maximum update rate of the AD9742ARUZ?
The AD9742ARUZ supports update rates up to 210 MSPS.
- What are the power supply requirements for the AD9742ARUZ?
The device operates on a single supply voltage ranging from 2.7 V to 3.6 V.
- How much power does the AD9742ARUZ consume in full performance mode?
The power dissipation in full performance mode is approximately 135 mW.
- Can the power consumption of the AD9742ARUZ be reduced?
Yes, the power dissipation can be reduced to 60 mW by lowering the full-scale current output, and a power-down mode reduces the standby power to approximately 15 mW.
- What type of package is the AD9742ARUZ available in?
The AD9742ARUZ is available in a 28-Lead Thin Shrink Small Outline Package (TSSOP).
- What is the operating temperature range of the AD9742ARUZ?
The operating temperature range is from -40°C to 85°C.
- Does the AD9742ARUZ have an on-chip voltage reference?
Yes, it includes a 1.2 V temperature-compensated band gap voltage reference.
- What logic family does the AD9742ARUZ support?
The digital inputs support 3 V CMOS logic families.
- What are some typical applications of the AD9742ARUZ?
Typical applications include wireless communication systems, baseband and IF signal processing, portable and battery-powered devices, high-speed data acquisition systems, and telecommunication equipment.
