TLC7628CDWR

Digital To Analog Converters Overview

The TLC7628CDWR is a dual, 8-bit multiplying digital-to-analog converter (DAC) manufactured by Texas Instruments. It features separate on-chip data latches and exceptionally close DAC-to-DAC matching. The device operates from a single power supply ranging from 10.8 V to 15.75 V and provides TTL-compatible digital inputs. Key electrical specifications include an 8-bit resolution, a linearity error of ±1/2 LSB, and a settling time of 100 ns. Power dissipation is rated at 20 mW with a propagation delay of 80 ns. The component is housed in a 20-pin SOIC (DW) package.

Digital To Analog Converters Feature Summary

• Features two identical 8-bit multiplying DACs with inverted R-2R ladder architecture for precise signal control.
• Includes separate on-chip data latches for each channel, allowing easy interface to microprocessor buses via common input ports.
• Supports both 2-quadrant and full 4-quadrant multiplication modes for versatile gain-setting applications.
• Provides fast control signaling suitable for digital signal processor (DSP) applications.

Digital To Analog Converters Applications

• Microprocessor-controlled gain-setting circuits
• Signal-control systems requiring high-speed updating
• Digital signal processor (DSP) interfaces

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix 'CDWR' corresponds to the tape-and-reel packaging format containing 2000 units per reel. Confirm that the active production status aligns with current project requirements. Ensure compatibility with the required 20-pin SOIC footprint during PCB layout validation.

Digital To Analog Converters Selection Notes

Select this component when dual-channel 8-bit resolution is required within a single package. Verify that the system power supply falls within the 10.8 V to 15.75 V operating range. Consider the 100 ns settling time for bandwidth limitations in high-speed signal processing paths.

Digital To Analog Converters Part Context

This part belongs to the TLC7628C series of dual multiplying DACs. It shares functional similarities with the TLC7528C but offers distinct performance characteristics regarding speed and interface logic. The CDWR suffix specifically denotes the surface-mount SOIC variant supplied in large tape-and-reel quantities for automated assembly.

Digital To Analog Converters Replacement Considerations

TLC7628CDW is a parameter-equivalent alternative available in tube packaging. Both parts share identical electrical specifications and pinouts, differing only in shipping configuration.

Digital To Analog Converters FAQ

How does the DACA/DACB control signal function?

The DACA/DACB control input determines which of the two internal DAC data latches is loaded with new data from the DB0-DB7 bus when CS and WR are low.

What is the maximum reference voltage allowed?

The recommended operating conditions specify a reference voltage of ±10 V, though absolute maximum ratings allow up to ±25 V relative to AGND.

Is the output buffered?

No, the TLC7628CDWR provides unbuffered current outputs. External operational amplifiers are typically required to convert these currents into voltage signals.