Overview
The AD7247ABRZ-REEL is a dual 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD7247A series, which is an enhanced version of the industry-standard AD7247. It features improved operation from 12 V to 15 V supplies, faster interface times, and better reference voltage stability. The AD7247A is a complete, monolithic CMOS chip that includes output amplifiers and a Zener voltage reference, eliminating the need for external user trims to achieve full specified performance.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Number of DACs | Dual |
| Supply Voltage Range | 12 V to 15 V |
| Output Voltage Ranges | 0 V to +5 V, 0 V to +10 V, ±5 V (with dual supplies) |
| Reference Voltage | On-chip 5 V reference (±30 mV for standard version, ±50 mV for T version) |
| Package Type | 24-Lead SOIC (Wide) |
| Temperature Range | -40°C to 85°C |
| Interface | Parallel load with WR and Chip Select inputs |
Key Features
- Microprocessor compatible with high-speed data latches and interface logic.
- Faster settling times and improved reference voltage stability.
- REF OUT/REF IN function allows use of on-chip or external reference voltage.
- Output amplifiers capable of developing +10 V across a 2 kΩ load to GND.
- No external user trims required for full specified performance.
- Asynchronous LDAC signal for updating DAC latches and analog outputs.
Applications
- Industrial control systems.
- Medical devices requiring precise analog output.
- Aerospace and defense applications where high accuracy is crucial.
- Automotive systems needing reliable and precise digital-to-analog conversion.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD7247ABRZ-REEL?
The AD7247ABRZ-REEL has a resolution of 12 bits.
- What are the available output voltage ranges for the AD7247ABRZ-REEL?
The output voltage ranges are 0 V to +5 V, 0 V to +10 V, and ±5 V (with dual supplies).
- What is the supply voltage range for the AD7247ABRZ-REEL?
The supply voltage range is from 12 V to 15 V.
- Does the AD7247ABRZ-REEL require external user trims?
No, the AD7247ABRZ-REEL does not require external user trims to achieve full specified performance.
- What type of package does the AD7247ABRZ-REEL come in?
The AD7247ABRZ-REEL comes in a 24-Lead SOIC (Wide) package.
- What is the temperature range for the AD7247ABRZ-REEL?
The temperature range is from -40°C to 85°C.
- How does the REF OUT/REF IN function work on the AD7247ABRZ-REEL?
The REF OUT/REF IN function allows either the on-chip 5 V reference or an external reference to be used as the reference voltage for the part.
- What is the maximum voltage the output amplifiers can develop across a load?
The output amplifiers are capable of developing +10 V across a 2 kΩ load to GND.
- Is the AD7247ABRZ-REEL microprocessor compatible?
Yes, the AD7247ABRZ-REEL is microprocessor compatible with high-speed data latches and interface logic.
- What is the purpose of the LDAC signal on the AD7247ABRZ-REEL?
The LDAC signal updates the DAC latches and analog outputs asynchronously.
