AD7948BRZ

Digital To Analog Converters Overview

The AD7948BRZ is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices, featuring an 8-bit byte interface. It operates on a single +5 V supply with guaranteed specifications for the industrial temperature range of -40°C to +85°C. The device provides a relative accuracy of ±0.5 LSBs maximum for both integral and differential nonlinearity. Key performance metrics include a typical output voltage settling time of 600 ns to 0.01% and a low digital-to-analog glitch impulse of 60 nV-s. Power consumption is typically 5 mW under normal operating conditions.

Digital To Analog Converters Feature Summary

• 12-bit resolution with ±0.5 LSB max INL and DNL
• 8-bit parallel byte interface with CSMSB, CSLSB, WR, and LDAC control
• Single +5 V supply operation with 600 ns settling time
• Low power dissipation of 5 mW typical

Digital To Analog Converters Applications

• Battery-powered instrumentation
• Laptop computers
• Upgrades for all 754x series DACs in 5 V designs

Digital To Analog Converters Procurement Notes

Verify that the component matches the specific B grade requirements for the -40°C to +85°C temperature range. Confirm the package type corresponds to the BR suffix (SOP-20). Ensure the design supports the required 5 V supply voltage for normal mode operation as specified in the datasheet.

Digital To Analog Converters Selection Notes

Select the AD7948BRZ when an 8-bit byte interface is preferred over the full 12-bit parallel bus of the AD7945 or the serial interface of the AD7943. This model is suitable for applications requiring fast data throughput via byte-wise loading while maintaining high linearity and low power consumption in standard 5 V systems.

Digital To Analog Converters Part Context

The AD7948BRZ belongs to the AD7943/AD7945/AD7948 family of fast 12-bit multiplying DACs. While functionally similar to the AD7945, it utilizes an 8-bit byte interface architecture. The 'B' grade indicates industrial temperature performance, and the 'R' suffix denotes the SOP-20 package option.

Digital To Analog Converters Replacement Considerations

The AD7948BRZ is designed to replace industry-standard AD7548 devices in 5 V designs. When substituting, ensure the host system supports the specific timing requirements for the 8-bit byte interface, including CSMSB, CSLSB, and WR signal constraints.