Overview
The AD8582ARZ-REEL, produced by Analog Devices Inc., is a complete, parallel input, dual 12-bit digital-to-analog converter (DAC) designed to operate from a single +5 volt supply. This monolithic DAC is built using a CBCMOS process, offering low cost and ease of use in +5 volt only systems. The device includes two voltage-switched, 12-bit DACs, a curvature-corrected bandgap reference, rail-to-rail output op amps, input registers, and DAC registers. It is available in a 24-lead SOIC package and is fully specified for operation over a temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Resolution | N | - | - | - | 12 Bits | - |
| Relative Accuracy | INL | - | -2 | - | +2 | LSB |
| Differential Nonlinearity | DNL | - | -1 | - | +1 | LSB |
| Zero-Scale Error | VZSE | - | - | - | - | mV |
| Logic Input Low Voltage | VIL | - | - | 0.8 | - | V |
| Logic Input High Voltage | VIH | - | - | - | 2.4 | V |
| Input Leakage Current | IIL | - | - | - | 10 | µA |
| Supply Voltage | VDD | - | 4.75 | - | 5.25 | V |
| Positive Supply Current | IDD | VIH = 2.4 V, VIL = 0.8 V | - | - | 7 | mA |
| Power Dissipation | PDISS | VIH = 2.4 V, VIL = 0.8 V | - | - | 35 | mW |
Key Features
- Dual 12-Bit DACs: The AD8582 includes two voltage-switched, 12-bit digital-to-analog converters with a resolution of 12 bits and a one-millivolt-per-bit resolution.
- Parallel Input Interface: The device features a high-speed parallel data interface that connects to the fastest processors without wait states. It includes twelve data bits, an address select pin, two load strobe pins, and an active low CS strobe.
- Rail-to-Rail Output Amplifiers: The op amp output swings from 0 volts to +4.095 volts, capable of driving ±5 mA. This allows for a wide range of usable supply voltage.
- Curvature-Corrected Bandgap Reference: The device includes a curvature-corrected bandgap reference trimmed to 2.5 volts output, which is amplified by the on-chip amplifier to 4.095 volts full scale.
- Asynchronous Reset: An asynchronous reset input sets the output to zero scale or midscale when the MSB bit is programmed to Logic 1, useful for power-on reset or system failure recovery.
- Temperature Range: Fully specified for operation over -40°C to +85°C.
Applications
- Industrial Control Systems: The AD8582 is suitable for industrial control systems that require precise analog output signals from digital inputs.
- Medical Devices: Its high accuracy and stability make it a good fit for medical devices that need reliable analog outputs.
- Aerospace and Defense: The device's robust performance over a wide temperature range makes it suitable for aerospace and defense applications.
- Automotive Systems: It can be used in automotive systems that require high precision and reliability in analog output signals.
- Test and Measurement Equipment: The AD8582 is also applicable in test and measurement equipment where accurate analog outputs are crucial).
Q & A
- What is the resolution of the AD8582 DAC?
The AD8582 has a resolution of 12 bits.
- What is the supply voltage range for the AD8582?
The AD8582 operates from a supply voltage range of +4.75 V to +5.25 V, with possible operation down to +4.3 V under certain conditions.
- What type of output amplifiers does the AD8582 use?
The AD8582 uses rail-to-rail output amplifiers.
- How does the asynchronous reset function work on the AD8582?
The asynchronous reset input sets the output to zero scale or midscale when the MSB bit is programmed to Logic 1, useful for power-on reset or system failure recovery.
- What is the temperature range for the AD8582?
The AD8582 is fully specified for operation over -40°C to +85°C.
- What is the maximum output current of the AD8582?
The AD8582 can drive up to ±5 mA.
- What type of data interface does the AD8582 use?
The AD8582 features a high-speed parallel data interface.
- Is the AD8582 suitable for use in high-frequency applications?
Yes, the AD8582 can be used in high-frequency applications, but the power supply rejection versus frequency performance should be considered.
- What are the package options for the AD8582?
The AD8582 is available in 24-pin plastic DIP and 24-lead SOIC packages.
- What is the significance of the curvature-corrected bandgap reference in the AD8582?
The curvature-corrected bandgap reference is trimmed to 2.5 volts output and is amplified by the on-chip amplifier to 4.095 volts full scale, ensuring stable and accurate analog outputs.
