Overview
The AD9744ACPZRL7, 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 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 the TxDAC family, which includes pin-compatible 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 | 135 | mW at 3.3 V | ||
| Power-Down Mode | 15 | mW at 3.3 V | ||
| Supply Voltage | 2.7 | 3.6 | V | |
| Package Type | 32-Lead LFCSP (5mm x 5mm w/ EP) | |||
| Signal-to-Noise Ratio (SNR) | 82 | dB (fCLOCK = 65 MSPS, fOUT = 5 MHz, IOUTFS = 20 mA) | ||
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 band gap reference integrated for a complete monolithic DAC solution.
- Digital inputs support 3 V CMOS logic families.
- Data input supports two's complement or straight binary data coding.
- Differential current outputs: 2 mA to 20 mA.
Applications
- Wideband communication transmit channels.
- Direct IFs (Intermediate Frequencies).
- Base stations.
- Wireless local loops.
- Digital radio links.
- Direct digital synthesis (DDS).
- Instrumentation.
Q & A
- What is the resolution of the AD9744ACPZRL7?
The AD9744ACPZRL7 has a 14-bit resolution.
- What is the maximum output update rate of the AD9744ACPZRL7?
The maximum output update rate is up to 210 MSPS.
- What is the power dissipation of the AD9744ACPZRL7 in normal operation?
The power dissipation is approximately 135 mW at 3.3 V.
- How much power does the AD9744ACPZRL7 consume in power-down mode?
In power-down mode, the power dissipation is reduced to approximately 15 mW at 3.3 V.
- What type of package does the AD9744ACPZRL7 come in?
The AD9744ACPZRL7 comes in a 32-Lead LFCSP (5mm x 5mm w/ EP) package.
- What is the signal-to-noise ratio (SNR) of the AD9744ACPZRL7?
The SNR is up to 82 dB (fCLOCK = 65 MSPS, fOUT = 5 MHz, IOUTFS = 20 mA).
- Does the AD9744ACPZRL7 support CMOS logic families?
Yes, the digital inputs support 3 V CMOS logic families.
- What is the settling time of the AD9744ACPZRL7?
The output settling time (tST) is up to 11 ns.
- What are the typical applications of the AD9744ACPZRL7?
Typical applications include wideband communication transmit channels, direct IFs, base stations, wireless local loops, digital radio links, direct digital synthesis (DDS), and instrumentation.
- How does the AD9744ACPZRL7 reduce spurious components?
The AD9744ACPZRL7 uses a segmented current source architecture combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance.
