Overview
The AD9744ARU, produced by Analog Devices Inc., is a 14-bit resolution, wideband, third-generation member of the TxDAC series of high-performance, low-power CMOS digital-to-analog converters (DACs). This device is part of the TxDAC family, which includes pin-compatible 8-, 10-, 12-, and 14-bit DACs, optimized for the transmit signal path of communication systems. The AD9744ARU offers exceptional AC and DC performance, supporting update rates up to 210 MSPS, making it well-suited for high-speed and low-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 14 bits | |||
| Maximum Output Update Rate (fCLOCK) | 210 | MSPS | ||
| Output Settling Time (tST) (to 0.1%) | 11 | ns | ||
| Power Dissipation | 135 | mW at 3.3 V | ||
| Power-Down Mode Power Dissipation | 15 | mW at 3.3 V | ||
| Full-Scale Current Output (IOUTFS) | 2 | 20 | mA | |
| Package Types | 28-Lead TSSOP, 28-Lead SOIC (Wide), 32-Lead LFCSP | |||
| Digital Input Logic | 3 V CMOS logic families | |||
Key Features
- Segmented current source architecture combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance.
- Edge-triggered input latches and a 1.2 V temperature-compensated band gap reference for a complete monolithic DAC solution.
- Supports twos complement or straight binary data coding.
- High-speed, single-ended CMOS clock input supporting up to 210 MSPS conversion rate.
- Low power operation with the ability to reduce power dissipation to 60 mW with a slight degradation in performance.
- Power-down mode to reduce standby power dissipation to approximately 15 mW.
Applications
- Wideband communication transmit channels.
- Direct IF (Intermediate Frequency) stages.
- Base stations.
- Wireless local loops.
- Digital radio links.
- Direct digital synthesis (DDS).
- Instrumentation.
Q & A
- What is the resolution of the AD9744ARU?
The AD9744ARU has a 14-bit resolution.
- What is the maximum output update rate of the AD9744ARU?
The maximum output update rate is up to 210 MSPS.
- What are the package options available for the AD9744ARU?
The AD9744ARU is available in 28-Lead TSSOP, 28-Lead SOIC (Wide), and 32-Lead LFCSP packages.
- What is the power dissipation of the AD9744ARU in normal operation?
The power dissipation is approximately 135 mW at 3.3 V.
- How much power does the AD9744ARU consume in power-down mode?
In power-down mode, the power dissipation is approximately 15 mW at 3.3 V.
- What type of digital input logic does the AD9744ARU support?
The AD9744ARU supports 3 V CMOS logic families.
- What is the settling time of the AD9744ARU?
The output settling time (tST) to 0.1% is 11 ns.
- Can the AD9744ARU be used in low-power applications?
Yes, the AD9744ARU is well-suited for low-power applications and can further reduce power dissipation to 60 mW with a slight degradation in performance.
- What are some common applications of the AD9744ARU?
Common applications include wideband communication transmit channels, direct IF stages, base stations, wireless local loops, digital radio links, and instrumentation.
- Does the AD9744ARU have an integrated reference?
Yes, the AD9744ARU includes an on-chip 1.2 V temperature-compensated band gap reference.
