AD7834ANZ

Overview

The AD7834ANZ is a monolithic quad 14-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It utilizes LC2MOS technology and features serial data loading via DIN, SCLK, and FSYNC pins. The device provides four buffered voltage outputs with a maximum span of 14 V and a range of ±8.192 V. It includes power-on reset, user-assigned addressing for up to 32 devices, and an asynchronous clear function. The component is housed in a 28-lead PDIP package.

Feature Summary

• Four 14-bit DACs integrated on a single chip
• Serial input interface with MSB-first 16-bit data format
• Output voltage range of ±8.192 V with 14 V maximum span
• User-assigned device addressing using PA0–PA4 pins

Applications

• Process control systems
• Automatic test equipment
• General-purpose instrumentation

Procurement Notes

Verify the package type matches the required application, as the AD7834 series is available in both surface-mount and through-hole configurations. Confirm that the specific ordering suffix corresponds to the desired packaging variant before finalizing procurement decisions.

Selection Notes

Select the AD7834ANZ when a serial interface is preferred over parallel loading to reduce pin count. Ensure the system supports the required 5 V logic supply and ±15 V analog supplies. Verify that the 10 µs settling time meets the speed requirements of the target application.

Part Context

The AD7834ANZ belongs to the AD7834/AD7835 family of LC2MOS quad 14-bit DACs. While the AD7834 uses serial loading, its counterpart, the AD7835, utilizes parallel 8-bit or 14-bit loading. Both share similar accuracy specifications and output architectures but differ in their digital input interfaces.

Replacement Considerations

Direct substitutes within the same family include the AD7835 for parallel interface applications. Other variants such as the AD7834ARZ offer the same functionality in a surface-mount SOIC package.