Overview
The AD7247AARZ, produced by Analog Devices Inc., is a complete, dual, 12-bit, voltage output digital-to-analog converter (DAC) integrated into a single monolithic CMOS chip. This device features on-chip voltage reference and output amplifiers, making it a versatile component for various analog output applications. The AD7247AARZ is an enhanced version of the industry-standard AD7247, offering improvements such as operation from 12 V to 15 V supplies, faster interface times, and better reference variations with VDD. It is designed to be microprocessor-compatible with high-speed data latches and interface logic, ensuring easy integration into modern microprocessor systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12-bit | |
| Output Voltage Range (Single Supply) | 0 V to +5 V, 0 V to +10 V | V |
| Output Voltage Range (Dual Supply) | 0 V to +5 V, 0 V to +10 V, ±5 V | V |
| Power Supply Range | 12 V to 15 V | V |
| Power Consumption (Typical) | 165 mW | mW |
| Data Setup Time | 30 ns (typical) | ns |
| Settling Time | 10 µs (max), 5 µs (typical) | µs |
| Output Impedance | 0.5 Ω (typical) | Ω |
| Package Type | 24-SOIC |
Key Features
- Complete dual 12-bit DAC with on-chip voltage reference and output amplifiers.
- Microprocessor-compatible with high-speed data latches and interface logic.
- Operation from 12 V to 15 V supplies with single or dual supply options.
- Faster interface times with 30 ns typical data setup time.
- Low power consumption of 165 mW (typical) in single supply operation.
- Output amplifiers capable of developing +10 V across a 2 kΩ load to GND.
- REF OUT/REF IN function allowing use of on-chip 5 V reference or external reference.
- Asynchronous LDAC signal for updating DAC latches and analog outputs.
Applications
- Industrial control systems requiring precise analog output.
- Aerospace and defense applications where reliability and performance are critical.
- Medical devices needing accurate and stable analog signals.
- Automotive systems that require robust and high-performance DACs.
- Test and measurement equipment where precision and speed are essential.
Q & A
- What is the resolution of the AD7247AARZ DAC?
The AD7247AARZ has a resolution of 12 bits.
- What are the output voltage ranges for the AD7247AARZ in single supply operation?
The output voltage ranges are 0 V to +5 V and 0 V to +10 V.
- Can the AD7247AARZ operate with dual supplies?
- What is the typical power consumption of the AD7247AARZ in single supply operation?
The typical power consumption is 165 mW.
- How long does it take for the AD7247AARZ to settle to within ±1/2 LSB of the final value?
The settling time is typically 5 µs and up to 10 µs maximum.
- Is the AD7247AARZ microprocessor-compatible?
- What is the package type of the AD7247AARZ?
The package type is 24-SOIC.
- Can the AD7247AARZ use an external reference voltage?
- How does the LDAC signal work on the AD7247AARZ?
The LDAC signal is asynchronous and updates the DAC latches and analog outputs on its rising edge.
- What are some typical applications of the AD7247AARZ?
Typical applications include industrial control systems, aerospace and defense, medical devices, automotive systems, and test and measurement equipment.
