AD9748ACP

Digital To Analog Converters Overview

The AD9748ACP is an 8-bit, wideband digital-to-analog converter (DAC) from Analog Devices' TxDAC family. It supports update rates up to 210 MSPS with a typical settling time of 11 ns to 0.1% full-scale. The device features differential current outputs adjustable between 2 mA and 20 mA, powered by a single 2.7 V to 3.6 V supply. Key linearity specifications include ±0.1 LSB DNL and INL. It integrates a 1.2 V temperature-compensated band gap reference and CMOS-compatible edge-triggered latches for digital inputs.

Digital To Analog Converters Feature Summary

• 8-bit resolution with 210 MSPS maximum conversion rate
• High linearity: ±0.1 LSB typical DNL and INL
• Adjustable full-scale output current from 2 mA to 20 mA
• Integrated 1.2 V band gap voltage reference
• Low power dissipation of 135 mW at nominal settings

Digital To Analog Converters Applications

• Communications systems transmit signal paths
• Direct digital synthesis (DDS)
• Instrumentation applications

Digital To Analog Converters Procurement Notes

Verify the specific package suffix against the manufacturer's ordering guide to ensure compatibility with the required footprint. Confirm that the component meets RoHS standards if environmental compliance is mandatory for the assembly process. Check for any recent revision history updates that may affect pinout or electrical characteristics.

Digital To Analog Converters Selection Notes

Select this component when an 8-bit resolution is sufficient for the application requirements. Consider the adjustable full-scale current range to optimize power consumption versus performance needs. Ensure the system clock supports up to 210 MSPS and that the digital interface logic levels are compatible with the specified CMOS input thresholds.

Digital To Analog Converters Part Context

The AD9748 is part of the third-generation TxDAC product family, which includes pin-compatible 10-bit, 12-bit, and 14-bit variants. This design allows for upward or downward selection based on resolution and cost without changing the PCB layout. It shares the same interface options and small outline package as other members in the series.

Digital To Analog Converters Replacement Considerations

Pin-compatible alternatives within the TxDAC family include the AD9740 (10-bit), AD9742 (12-bit), and AD9744 (14-bit). These devices share the same package and interface but offer higher resolution. Verify that the increased resolution meets the system requirements and that the power and timing characteristics remain suitable.