Overview
The MX674AJEWI is a part of the MAX174/MX574A/MX674A family of complete 12-bit analog-to-digital converters (ADCs) produced by Analog Devices Inc./Maxim Integrated. These ADCs are known for their high speed, low power consumption, and integrated clock and voltage reference. They utilize a successive approximation technique to convert analog inputs into 12-bit digital output codes, making them versatile for various applications requiring precise analog-to-digital conversion.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12-bit | |
| Conversion Time | 15μs (MX674A) | |
| Analog Input Range | 0 to +10V or 0 to +20V (unipolar), ±5V or ±10V (bipolar) | |
| Input Impedance | 3-7 kΩ (10V input), 6-14 kΩ (20V input) | kΩ |
| Power Consumption | 150mW | mW |
| Reference Voltage | Internal buried zener reference | |
| Output Impedance (DAC) | 2.5kΩ | kΩ |
| Package Options | 28-PDIP, 28-SOIC_W |
Key Features
- High-speed conversion with low power consumption.
- On-chip clock and voltage reference.
- Versatile analog input structure supporting various input ranges.
- Standard microprocessor interface architectures compatible with 8-, 12-, and 16-bit wide buses.
- Three-state data outputs controlled by CS, CE, and R/C logic inputs.
- Internal voltage output DAC controlled by a successive approximation register (SAR).
- Low-drift and low-noise performance due to the internal buried zener reference.
Applications
The MX674AJEWI is suitable for a wide range of applications that require precise and high-speed analog-to-digital conversion. These include:
- Data acquisition systems.
- Industrial control systems.
- Medical devices requiring accurate analog signal conversion.
- Aerospace and defense applications where reliability and precision are critical.
- Automotive systems that need robust and efficient ADCs.
Q & A
- What is the resolution of the MX674AJEWI ADC?
The MX674AJEWI has a 12-bit resolution. - What are the conversion times for the MX674A?
The conversion time for the MX674A is 15μs. - What are the supported analog input ranges for the MX674AJEWI?
The supported analog input ranges are 0 to +10V or 0 to +20V (unipolar) and ±5V or ±10V (bipolar). - What is the power consumption of the MX674AJEWI?
The power consumption is 150mW. - Does the MX674AJEWI have an internal reference voltage?
Yes, it has an internal buried zener reference voltage. - What are the package options available for the MX674AJEWI?
The package options include 28-PDIP and 28-SOIC_W. - How does the MX674AJEWI interface with microprocessors?
The MX674AJEWI uses standard microprocessor interface architectures and can be interfaced to 8-, 12-, and 16-bit wide buses. - What is the output impedance of the DAC in the MX674AJEWI?
The output impedance of the DAC is 2.5kΩ. - What are the key benefits of the internal buried zener reference in the MX674AJEWI?
The internal buried zener reference provides low-drift and low-noise performance. - What external components are typically required for the MX674AJEWI to function?
Only decoupling capacitors and fixed resistors are typically required.
