Overview
The DAC8420ES-REEL, produced by Analog Devices Inc., is a quad 12-bit serial voltage output Digital-to-Analog Converter (DAC). This device utilizes BiCMOS technology, offering high circuit density and low power consumption. It features a simple, 3-wire serial digital input interface that can be easily connected to microprocessors running at up to 10 MHz with minimal additional circuitry. The DAC8420 is available in various 16-lead packages, including PDIP, SOIC, and CERDIP, providing flexibility in design and implementation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 bits | |||
| Supply Voltage | +5 V | ±15 V | V | |
| Reference Voltage Range | +2.5 V | ±10 V | V | |
| Power Dissipation (±15 V) | 255 mW | mW | ||
| Power Dissipation (+5 V) | 35 mW | mW | ||
| Logic Input High Voltage | 2.4 V | V | ||
| Logic Input Low Voltage | 0.8 V | V | ||
| Settling Time (to 0.01%) | 8 μs | μs | ||
| Slew Rate (10% to 90%) | 1.5 V/μs | V/μs | ||
Key Features
- User-programmable reset control CLR to force all four DAC outputs to either zero scale or midscale asynchronously.
- 3-wire serial digital input interface compatible with microprocessors running up to 10 MHz.
- Each DAC is addressed individually by a 16-bit serial word consisting of a 12-bit data word and an address header.
- Output voltage range set by user for positive or negative unipolar or bipolar signal swings within the supplies.
- Low power consumption with maximum power dissipation of 255 mW at ±15 V and 35 mW at +5 V.
- Available in 16-lead PDIP, SOIC, and CERDIP packages.
- High circuit density and low glitch impulse during major code transitions (64 nV-s typical).
Applications
The DAC8420 is suitable for a variety of applications requiring precise digital-to-analog conversion, such as:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Test and measurement equipment.
Q & A
- What is the resolution of the DAC8420?
The DAC8420 has a resolution of 12 bits.
- What are the available package types for the DAC8420?
The DAC8420 is available in 16-lead PDIP, SOIC, and CERDIP packages.
- What is the power dissipation of the DAC8420 when operating from ±15 V supplies?
The power dissipation is less than 255 mW when operating from ±15 V supplies.
- How is the output voltage range set for the DAC8420?
The output voltage range is set by the user using the inputs VREFHI and VREFLO for positive or negative unipolar or bipolar signal swings within the supplies.
- What is the settling time of the DAC8420 to 0.01% accuracy?
The settling time to 0.01% accuracy is 8 μs.
- Can the DAC8420 be interfaced with microprocessors?
Yes, the DAC8420 has a 3-wire serial digital input interface that can be easily connected to microprocessors running up to 10 MHz.
- What is the typical slew rate of the DAC8420?
The typical slew rate is 1.5 V/μs from 10% to 90%.
- How does the user-programmable reset control CLR function?
The user-programmable reset control CLR forces all four DAC outputs to either zero scale or midscale asynchronously.
- What is the maximum power dissipation of the DAC8420 when operating from a +5 V supply?
The maximum power dissipation is 35 mW when operating from a +5 V supply.
- What is the typical glitch impulse during major code transitions for the DAC8420?
The typical glitch impulse is 64 nV-s during major code transitions.
