DAC0832LCN

Digital To Analog Converters Overview

The DAC0832LCN is an 8-bit microprocessor-compatible, double-buffered digital-to-analog converter manufactured by Texas Instruments. It features a deposited silicon-chromium R-2R resistor ladder network and CMOS current switches for low power consumption and low output leakage. The device operates on a single power supply ranging from 5 VDC to 15 VDC with a typical power dissipation of 20 mW. It provides a current settling time of 1 μs and supports direct interface with popular microprocessors via TTL voltage level logic inputs. The component is housed in a 20-pin PDIP package and functions within an operating temperature range of 0°C to +70°C.

Digital To Analog Converters Feature Summary

• Double-buffered architecture allows simultaneous updating of multiple converters via a common strobe signal.
• Microprocessor compatibility with direct interface to standard buses without external logic.
• Four-quadrant multiplication capability using a wide bipolar reference voltage range.
• On-chip feedback resistor matches the internal ladder network for improved temperature tracking.

Digital To Analog Converters Applications

• Industrial process control systems requiring analog signal generation.
• Programmable gain amplifier circuits utilizing digital attenuation.
• Waveform generation applications driven by binary counters or ROM data.

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'LCN' to confirm the 20-pin PDIP package and commercial temperature range (0°C to +70°C). Ensure the source document explicitly identifies the manufacturer as Texas Instruments or National Semiconductor, as legacy branding may vary. Confirm RoHS compliance status through official datasheets or distributor specifications before procurement.

Digital To Analog Converters Selection Notes

Select this component when an 8-bit resolution with double buffering is required for microprocessor interfacing. It is suitable for applications needing a current output that can be converted to voltage using an external operational amplifier. Consider the 1 μs settling time and 20 mW power dissipation for system timing and thermal budget calculations.

Digital To Analog Converters Part Context

The DAC0832 belongs to the MICRO-DAC family of multiplying digital-to-analog converters. It is pin-for-pin compatible with the 12-bit DAC1230 series, allowing for potential resolution upgrades in existing designs without hardware modifications. The device utilizes a silicon-chromium thin-film resistor ladder deposited on the chip surface to ensure stability.

Digital To Analog Converters Replacement Considerations

The DAC0832LCWMX/NOPB serves as a surface-mount replacement offering identical electrical characteristics in a 20-SOIC package. Designers must account for the physical footprint differences between the through-hole PDIP and surface-mount SOIC variants during PCB layout adjustments.

Digital To Analog Converters FAQ

How does the double-buffering feature benefit system design?

Double buffering allows one register to hold the current analog output while the next digital word is loaded into the second register. This enables simultaneous updates of multiple DACs in a system using a common transfer strobe signal.

What is the purpose of the internal Rfb pin?

The Rfb pin provides an on-chip feedback resistor that should be used with an external operational amplifier. It matches the internal R-2R ladder resistors to track temperature variations and maintain linearity accuracy.

Can the DAC0832 operate with a 5V supply?

Yes, the device operates on a single power supply ranging from 5 VDC to 15 VDC. However, optimal performance and logic levels are often achieved at higher voltages like 15 VDC, though it remains functional at 5 VDC.