Overview
The AD9744ACPZ, 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 specifically 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 AD9744 is part of a pin-compatible family that includes 8-, 10-, 12-, and 14-bit DACs, allowing for flexible component selection based on performance, resolution, and cost.
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 (AVDD = 3.3 V) | 135 | mW | ||
| Power-Down Mode Power Dissipation (AVDD = 3.3 V) | 15 | mW | ||
| Supply Voltage Range | 2.7 | 3.3 | 3.6 | V |
| Full-Scale Current Output Range | 2 | 20 | mA | |
| Package Types | 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 consumption: 135 mW at 3.3 V, with a power-down mode reducing standby power 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.
- Support for 3 V CMOS logic families.
- Differential current outputs ranging from 2 mA to 20 mA.
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 AD9744ACPZ?
The AD9744ACPZ has a 14-bit resolution. - What is the maximum output update rate of the AD9744ACPZ?
The maximum output update rate is 210 MSPS. - What are the package options for the AD9744ACPZ?
The package options include 28-Lead SOIC, 28-Lead TSSOP, and 32-Lead LFCSP. - What is the power dissipation of the AD9744ACPZ at 3.3 V?
The power dissipation is 135 mW at 3.3 V. - Does the AD9744ACPZ have a power-down mode?
Yes, the AD9744ACPZ has a power-down mode that reduces standby power dissipation to approximately 15 mW. - What is the range of the full-scale current output?
The full-scale current output ranges from 2 mA to 20 mA. - What type of digital inputs does the AD9744ACPZ support?
The AD9744ACPZ supports 3 V CMOS logic families. - What is the purpose of the segmented current source architecture in the AD9744ACPZ?
The segmented current source architecture is combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance. - What are some typical applications of the AD9744ACPZ?
Typical applications include wideband communication transmit channels, direct IFs, base stations, wireless local loops, digital radio links, direct digital synthesis (DDS), and instrumentation. - Does the AD9744ACPZ have an integrated reference?
Yes, the AD9744ACPZ has an integrated 1.2 V temperature-compensated band gap reference.
