Overview
This document provides comprehensive technical details for the Analog Devices AD7245A and AD7248A, which are 12-bit, voltage-output, digital-to-analog converters (DACs). These devices integrate an output amplifier and a Zener voltage reference on a single monolithic CMOS chip, offering a high-performance solution for various digital-to-analog conversion needs.
Key Features
- 12-bit resolution
- Integrated output amplifier and voltage reference
- Operation from 12 V to 15 V supplies
- Improved linearity grades (up to ±1/2 LSB)
- Faster interface times for microprocessor compatibility
- Extended temperature range operation
- Low power consumption
- Single or dual supply operation
Product Description
The AD7245A/AD7248A series are microprocessor-compatible DACs featuring high-speed data latches and double-buffered interface logic. The AD7245A supports parallel data loading, while the AD7248A uses an 8-bit wide data bus for two-step loading. An on-chip buried Zener diode provides a stable, low-noise reference. These devices are fabricated using Analog Devices' LC2MOS process, combining precision bipolar circuits with low-power CMOS logic.
Applications & Capabilities
These DACs are suitable for a wide range of applications, including industrial control systems, data acquisition, and signal processing. They offer flexible output voltage ranges (0 V to 5 V, 0 V to 10 V, and ±5 V) and can be configured for various interface schemes with popular microprocessors. The document also details application circuits for programmable current sinks and function generators.
Manufacturer
Manufactured by Analog Devices, Inc.
