Overview
The AD9744ARZ is a 14-bit resolution, wideband, third-generation member of the TxDAC series of high-performance, low-power CMOS digital-to-analog converters (DACs) manufactured by Analog Devices Inc. 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 AD9744 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 @ 3.3 V |
| Power-Down Mode | - | 15 | - | mW @ 3.3 V |
| Full-Scale Current Output (IOUTFS) | - | - | 20 | mA |
| Package Options | - | - | - | 28-lead SOIC, 28-lead TSSOP, 32-lead LFCSP |
Key Features
- Data input supports twos complement or straight binary data coding.
- High-speed, single-ended CMOS clock input supports up to 210 MSPS conversion rate.
- Low power consumption: Complete CMOS DAC function operates on 135 mW from a 2.7 V to 3.6 V single supply.
- Power-down mode reduces standby power dissipation to approximately 15 mW.
- 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.
- Digital inputs support 3 V CMOS logic families.
Applications
- Wideband communication transmit channels.
- Direct IFs and base stations.
- Wireless local loops and digital radio links.
- Direct digital synthesis (DDS).
- Instrumentation.
Q & A
- What is the resolution of the AD9744ARZ?
The AD9744ARZ has a 14-bit resolution.
- What is the maximum output update rate of the AD9744ARZ?
The maximum output update rate is up to 210 MSPS.
- What are the package options for the AD9744ARZ?
The AD9744ARZ is available in 28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP packages.
- How much power does the AD9744ARZ consume in normal operation?
The AD9744ARZ consumes approximately 135 mW from a 3.3 V supply.
- What is the power consumption in power-down mode?
In power-down mode, the power consumption is reduced to approximately 15 mW.
- What type of data coding does the AD9744ARZ support?
The AD9744ARZ supports twos complement or straight binary data coding.
- What is the full-scale current output of the AD9744ARZ?
The full-scale current output (IOUTFS) is up to 20 mA.
- What are some typical applications of the AD9744ARZ?
Typical applications include wideband communication transmit channels, direct IFs, base stations, wireless local loops, digital radio links, and direct digital synthesis (DDS).
- Does the AD9744ARZ have a built-in reference voltage?
Yes, the AD9744ARZ includes a 1.2 V temperature-compensated band gap reference.
- What type of digital inputs does the AD9744ARZ support?
The AD9744ARZ supports 3 V CMOS logic families.
