AD7945ARS-B - Analog Devices Inc.

Manufacturer Part Number

AD7945ARS-B

Manufacturer

Analog Devices

Introduction

The AD7945ARS-B is a high-speed, microprocessor-compatible, 12-bit digital-to-analog converter with a minimalist parallel interface, providing robust performance for digital data acquisition systems.

Product Features and Performance

12-bit resolution

Single D/A converter

5µs typical settling time

Current output type - unbuffered

Parallel data interface

External reference type

R-2R ladder architecture

Operating temperature range from -40°C to 85°C

Product Advantages

High-speed performance suitable for high-frequency signal generation

Compact 20-SSOP packaging for space-saving applications

Ease of interface with microprocessors and digital systems

Robust temperature performance for industrial environments

Key Technical Parameters

Number of Bits: 12

Number of D/A Converters: 1

Settling Time: 5µs (Typ)

Output Type: Current - Unbuffered

Data Interface: Parallel

Reference Type: External

Voltage - Supply, Analog: 3V ~ 5.5V

Voltage - Supply, Digital: 3V ~ 5.5V

INL/DNL (LSB): ±1 (Max), ±0.9 (Max)

Architecture: R-2R

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Precision assured within ±1 LSB of integral nonlinearity (INL)

Compliance with industrial operating temperature standards for reliability

Compatibility

Paralleled interface for compatibility with various microprocessors

Standard power voltage range compatible with common digital systems

Application Areas

Data acquisition systems

Process control systems

Digital signal processing

Instrumentation and laboratory equipment

Product Lifecycle

Status: Obsolete

Availability of replacements or upgrades should be researched, as the product is no longer in production

Several Key Reasons to Choose This Product

Optimal choice for systems requiring rapid signal processing due to its quick settling time

Reliable output stability and operational accuracy with a high-resolution 12-bit DAC

Versatile compatibility with existing digital hardware

Suitable for diverse industrial environments because of its broad operating temperature range

Compact form factor for space-constrained applications