DAC312ER

Digital To Analog Converters Overview

The DAC312ER is a 12-bit high-speed multiplying digital-to-analog converter manufactured by Analog Devices Inc. It features a 20-pin Cerdip package and operates within a commercial temperature range of 0°C to +70°C. The device provides differential current outputs with a typical full-scale current of 4 mA and a settling time of 250 ns to ±1/2 LSB. Key electrical specifications include a differential nonlinearity (DNL) of ±1/2 LSB, integral nonlinearity (INL) of 0.05%, and a low full-scale temperature coefficient of 10 ppm/°C. It interfaces directly with TTL, CMOS, ECL, and PMOS/NMOS logic families.

Digital To Analog Converters Feature Summary

• 12-bit resolution with guaranteed monotonicity and ±1/2 LSB DNL
• Fast settling time of 250 ns to ±1/2 LSB
• Multiplying architecture with wide output voltage compliance (-5 V to +10 V)
• Direct interface capability for TTL, CMOS, ECL, and PMOS/NMOS logic

Digital To Analog Converters Applications

• A/D converters
• Data acquisition systems
• Video display drivers
• Programmable test equipment

Digital To Analog Converters Procurement Notes

Verify the specific grade suffix against the ordering guide to confirm the operating temperature range and linearity specifications. The 'ER' designation indicates the commercial grade (DAC312E) in a hermetic ceramic DIP package. Ensure that the application environment remains within the 0°C to +70°C limit to maintain guaranteed performance parameters such as DNL and INL.

Digital To Analog Converters Selection Notes

Select this component when a high-speed, multiplying DAC with industry-standard pinout compatibility is required. The DAC312ER is suitable for applications demanding low power consumption (225 mW typical) and direct logic interfacing without additional level shifters. Consider the 20-pin Cerdip package constraints if surface-mount alternatives are preferred for modern PCB layouts.

Digital To Analog Converters Part Context

The DAC312 series utilizes a hybrid architecture combining a 9-bit master D/A converter with a 3-bit segment generator. This design ensures uniform step size and monotonicity across the full scale. The device is available in multiple packages including Plastic DIP, SOL, and Hermetic DIP, with various temperature grades ranging from commercial to military specifications.

Digital To Analog Converters Replacement Considerations

The datasheet notes an industry standard AM6012 pinout compatibility. Verify functional equivalence with other 12-bit multiplying DACs offering similar settling times and logic interface capabilities if pin-for-pin replacement is necessary.

Digital To Analog Converters FAQ

What is the maximum logic input swing for the DAC312ER?

The logic inputs can swing between -5 V and +18 V, allowing direct interface with various logic families including +15 V CMOS even when powered from lower supply voltages.

How is the reference amplifier compensated for multiplying applications?

For AC or multiplying applications, a capacitor must be connected from pin 16 (COMP) to V-. The value depends on the impedance at pin 14; for example, a minimum of 5 pF is recommended for R14 = 1.0 kΩ.

What is the power dissipation at typical supply voltages?

At VS = +5 V/-15 V, the power dissipation is typically 225 mW. At VS = +15 V/-15 V, it increases to typically 267 mW, with a maximum absolute rating of 375 mW.