AD7943BN

Digital To Analog Converters Overview

The AD7943BN is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices, designed for single-supply operation. It features a serial interface with a 40 ns strobe pulsewidth and operates within a +5 V supply range (Normal Mode). The device guarantees ±0.5 LSB integral and differential nonlinearity across the industrial temperature range of -40°C to +85°C. Key electrical parameters include a typical power dissipation of 5 mW, a settling time of 600 ns to 0.01%, and a glitch impulse of 60 nV-s. It is housed in a 16-lead Plastic DIP package.

Digital To Analog Converters Feature Summary

• 12-bit resolution with guaranteed ±0.5 LSB INL and DNL linearity
• Serial interface with 40 ns minimum strobe pulsewidth
• Low power consumption: typically 5 mW at +5 V supply
• Fast settling time of 600 ns to 0.01% full-scale range

Digital To Analog Converters Applications

• Battery-powered instrumentation
• Laptop computers
• Upgrades for legacy 754x series DAC designs

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. The 'BN' designation indicates a 16-lead Plastic DIP package with an industrial temperature range (-40°C to +85°C). Ensure compatibility with existing PCB footprints and soldering profiles for through-hole mounting.

Digital To Analog Converters Selection Notes

Select the AD7943BN when a serial interface is required for space-constrained or pin-count-limited designs compared to parallel alternatives like the AD7945. Choose this component over the AD7948 if byte-wide data handling is not necessary. Verify that the system can accommodate the external reference voltage requirements for normal mode operation.

Digital To Analog Converters Part Context

The AD7943 is part of the AD7943/AD7945/AD7948 family of fast 12-bit multiplying DACs. While the AD7945 offers a 12-bit parallel interface and the AD7948 provides an 8-bit byte interface, the AD7943 specifically utilizes a serial input structure. All three variants share similar performance characteristics regarding speed and power but differ in data loading mechanisms.

Digital To Analog Converters Replacement Considerations

The datasheet identifies the AD7543 as the industry-standard predecessor that the AD7943 replaces. Designers upgrading from the AD7543 should note the improved speed and lower power consumption while maintaining pin-out compatibility in many applications.