3PD9708E

Overview

The 3PD9708E is an 8-bit CMOS digital-to-analog converter manufactured by 3PEAK, designed for high-speed applications with a maximum update rate of 125 MSPS. It features differential current outputs and operates on a single supply voltage ranging from +2.7 V to +5.5 V. The device integrates a temperature-compensated 1.10-V bandgap reference and edge-triggered input latches compatible with 3-V and 5-V CMOS logic families. Key performance metrics include a full-scale settling time of 35 ns to 0.1% and a SINAD of 50 dB at a 5-MHz output frequency. Power dissipation is adjustable via the full-scale current setting, ranging from 45 mW at 3 V to 175 mW at 5 V.

Feature Summary

• 125-MSPS update rate with 8-bit resolution and 1/4 LSB DNL/INL linearity
• Integrated 1.10-V bandgap reference with external reference input capability
• Differential current outputs (IOUTA/IOUTB) with adjustable full-scale current from 2 mA to 20 mA
• Edge-triggered latches supporting 3-V and 5-V CMOS logic interfaces

Applications

• Communications systems
• Signal reconstruction
• Instrumentation
• Video reconstruction

Procurement Notes

Verify the specific suffix 'E' against the official 3PEAK datasheet to confirm clock edge triggering behavior, as the base model may differ. Ensure the TSSOP28 package availability matches project requirements. Confirm that the industrial temperature range (-40°C to +85°C) aligns with the operational environment. Check for any recent revision history updates that might affect pin functions or electrical specifications.

Selection Notes

Select the 3PD9708E when a high-speed 8-bit DAC with integrated reference is required. The choice between the standard 3PD9708 and the 3PD9708E depends on the desired clock edge for data latching; the 'E' variant updates on the positive clock edge. Consider the power consumption trade-offs by adjusting the full-scale current setting, which can be lowered to 2 mA to reduce power dissipation to 45 mW without significant dynamic performance degradation.

Part Context

The 3PD9708(E) series represents a monolithic DAC solution utilizing a segmented current source architecture combined with a proprietary switching technique to enhance dynamic performance. Manufactured on an advanced CMOS process, it offers flexibility in supply voltage and output configuration. The device is part of 3PEAK's portfolio aimed at providing cost-effective, high-performance analog solutions for portable and low-power applications requiring fast conversion rates.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify compatibility with existing circuit layouts, particularly regarding the TSSOP28 package dimensions and pinout assignments. If replacing a different manufacturer's component, ensure that the logic level compatibility and output current drive capabilities meet the system requirements.