Overview
The AD9744ARZRL, 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 AD9744 offers exceptional AC and DC performance, supporting update rates up to 210 MSPS, making it suitable for high-speed 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 |
| Signal-to-Noise Ratio (SNR) at fCLOCK = 65 MSPS, fOUT = 5 MHz, IOUTFS = 20 mA | - | - | 82 | dB |
| Power Dissipation at 3.3 V | - | 135 | - | mW |
| Power-Down Mode Power Dissipation at 3.3 V | - | 15 | - | mW |
| Supply Voltage Range | 2.7 | - | 3.6 | V |
| 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: 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 bandgap reference.
- Support for 3 V CMOS logic families.
- Differential current outputs: 2 mA to 20 mA.
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 AD9744ARZRL DAC?
The AD9744ARZRL has a 14-bit resolution.
- What is the maximum output update rate of the AD9744ARZRL?
The maximum output update rate is up to 210 MSPS.
- What are the power consumption characteristics of the AD9744ARZRL?
The device operates on 135 mW from a 2.7 V to 3.6 V single supply and has a power-down mode that reduces standby power to approximately 15 mW.
- What types of packages are available for the AD9744ARZRL?
The device is available in 28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP packages.
- What is the signal-to-noise ratio (SNR) of the AD9744ARZRL at typical operating conditions?
The SNR is typically 82 dB at fCLOCK = 65 MSPS, fOUT = 5 MHz, and IOUTFS = 20 mA.
- Does the AD9744ARZRL support power-down mode?
Yes, the device has a power-down mode that reduces the standby power dissipation to approximately 15 mW.
- What is the output settling time of the AD9744ARZRL?
The output settling time is typically 11 ns to 0.1%.
- What are the typical applications of the AD9744ARZRL?
The device is typically used in wideband communication transmit channels, direct IF stages, base stations, wireless local loops, digital radio links, direct digital synthesis (DDS), and instrumentation.
- Does the AD9744ARZRL support 3 V CMOS logic families?
Yes, the digital inputs support 3 V CMOS logic families.
- What is the differential current output range of the AD9744ARZRL?
The differential current output range is from 2 mA to 20 mA.
