DAC1000 Series: 10-, 9-, and 8-Bit Multiplying Digital-to-Analog Converters

Overview

The DAC1006, DAC1007, and DAC1008 are high-performance CMOS/Si-Cr multiplying digital-to-analog converters (DACs) designed for seamless integration with popular microprocessors such as the 8080, 8048, 8085, and Z-80. These devices are engineered to function as memory locations or I/O ports, eliminating the need for additional interfacing logic. With their advanced architecture, they provide precise 10-, 9-, and 8-bit resolution, making them ideal for applications requiring accurate analog signal generation.

Features

• Easy-to-Adjust Endpoint Specifications: Uses endpoint specs instead of best straight-line fit for simplified calibration.
• Low Power Consumption: Optimized for energy efficiency in power-sensitive applications.
• Direct Microprocessor Interface: Compatible with 8080, 8048, 8085, Z-80, and other popular microprocessors without additional logic.
• Integrated Thin-Film on CMOS Structure: Combines precision thin-film resistors with CMOS technology for high accuracy.
• Flexible Data Input Modes: Supports double-buffered, single-buffered, or flow-through digital data inputs.
• Versatile Loading Options: Accepts two 8-bit bytes or a single 10-bit word.
• TTL-Compatible Logic Inputs: 1.4V logic threshold ensures compatibility with TTL voltage levels.
• Wide Reference Voltage Range: Operates with ±10V references, enabling full 4-quadrant multiplication.
• Stand-Alone Operation: Can function independently without a microprocessor if required.
• Compact Packaging: Available in a space-saving 0.3" standard 20-pin package.
• Special Order Options: Differential non-linearity selection available upon request.

Applications

The DAC1000 series is suited for a wide range of applications, including:

• Microprocessor-Controlled Systems: Ideal for embedded systems requiring precise analog outputs.
• Industrial Automation: Used in process control, motor control, and instrumentation.
• Test and Measurement Equipment: Provides accurate signal generation for calibration and testing.
• Audio Processing: Suitable for digital audio applications requiring high-resolution DACs.
• Communications Systems: Used in signal modulation and waveform generation.
• Stand-Alone Analog Systems: Functions independently in applications where a microprocessor is not present.

Electrical Characteristics

Key Specifications

• Output Current Settling Time: 500 ns (typical)
• Resolution: 10 bits (DAC1006), 9 bits (DAC1007), 8 bits (DAC1008)
• Linearity: Guaranteed over temperature for 10-, 9-, and 8-bit accuracy
• Gain Temperature Coefficient: Specified for stable performance across temperature ranges
• Reference Voltage Range: ±10V, supporting 4-quadrant multiplication
• Logic Input Levels: TTL-compatible with 1.4V threshold
• Power Consumption: Low power design for energy-efficient operation

Detailed Performance Data

The DAC1000 series ensures high performance with the following electrical characteristics:

• Differential Non-Linearity: Selectable as a special order option for precision-critical applications.
• Monotonicity: Guaranteed over the full operating temperature range.
• Output Compliance Voltage: Supports wide output voltage ranges for versatile applications.
• Digital Feedthrough: Minimized to reduce noise in sensitive circuits.

Package Information

Physical Dimensions

The DAC1000 series is available in a compact 20-pin package with the following specifications:

• Package Type: Standard 0.3" 20-pin DIP (Dual In-line Package)
• Pin Pitch: 0.1" (2.54 mm) spacing
• Package Material: Molded plastic for durability and thermal stability
• Operating Temperature Range: Industrial-grade temperature performance

Pin Configuration

The 20-pin package includes the following key pins:

• Digital Inputs (D0-D9): Data input lines for 10-bit, 9-bit, or 8-bit word loading.
• Control Pins (CS, WR, etc.): Microprocessor interface control signals.
• Reference Voltage Input (VREF): Accepts ±10V reference for multiplication.
• Analog Output (IOUT): Current output for analog signal generation.
• Power Supply Pins (VCC, GND): Standard power and ground connections.

Conclusion

The DAC1000 series of multiplying DACs offers a versatile and high-performance solution for applications requiring precise digital-to-analog conversion. With features like direct microprocessor interfacing, low power consumption, and flexible data input modes, these devices are well-suited for industrial, audio, communications, and test equipment applications. Their compact packaging and robust electrical characteristics make them a reliable choice for designers seeking accuracy and ease of integration.