Overview
The MX7821KR+T is a high-speed, microprocessor-compatible (μP), 8-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. It is designed as a plug-in upgrade for the industry-standard 7820 ADC. This converter utilizes a half-flash technique, resulting in a significantly faster conversion time of 660ns compared to the 1.36μs of the 7820. The MX7821KR+T supports dual power supplies and bipolar analog inputs, making it versatile for various applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8-bit |
| Conversion Time | 660ns |
| Input Type | Bipolar analog inputs |
| Power Supply | Dual power supplies supported |
| Track and Hold Capability | Capable of digitizing a 100kHz signal |
| Interface | Converter-μP interface appears as a memory location or input/output port |
| Data Outputs | Latched, three-state buffered circuitry for direct connection to a μP data bus or system input port |
| Package Type | Small-Outline IC, Wide (0.3in) |
Key Features
- High-speed conversion with a 660ns conversion time using a half-flash technique.
- Microprocessor-compatible interface that requires no external interface logic.
- Supports dual power supplies and bipolar analog inputs.
- Track and hold function capable of digitizing a 100kHz signal.
- Latched, three-state buffered data outputs for direct connection to a μP data bus or system input port.
- Overflow output for cascading devices to attain higher resolution.
- Ratiometric operation enabled by the input/reference arrangement.
Applications
The MX7821KR+T is suitable for a variety of applications that require high-speed analog-to-digital conversion, including:
- Industrial automation systems.
- Medical devices requiring fast and accurate data conversion.
- Aerospace and defense systems where high-speed data acquisition is critical.
- Automotive systems that need rapid analog-to-digital conversion.
- Test and measurement equipment.
Q & A
- What is the resolution of the MX7821KR+T ADC?
The MX7821KR+T has an 8-bit resolution.
- How long does the MX7821KR+T take to convert an analog signal to digital?
The conversion time of the MX7821KR+T is 660ns.
- Does the MX7821KR+T support bipolar analog inputs?
Yes, the MX7821KR+T supports bipolar analog inputs.
- What type of power supply does the MX7821KR+T support?
The MX7821KR+T supports dual power supplies.
- Can the MX7821KR+T digitize high-frequency signals?
Yes, the MX7821KR+T can digitize signals up to 100kHz.
- How does the MX7821KR+T interface with microprocessors?
The MX7821KR+T interfaces with microprocessors through a converter-μP interface that appears as a memory location or input/output port, requiring no external interface logic.
- What type of data output does the MX7821KR+T have?
The MX7821KR+T has latched, three-state buffered data outputs for direct connection to a μP data bus or system input port.
- Can the MX7821KR+T be cascaded for higher resolution?
Yes, the MX7821KR+T has an overflow output for cascading devices to attain higher resolution.
- What package types are available for the MX7821KR+T?
The MX7821KR+T is available in a Small-Outline IC, Wide (0.3in) package.
- Where can I find detailed documentation for the MX7821KR+T?
Detailed documentation, including datasheets and CAD models, can be found on the Analog Devices website and through distributors like Digi-Key and Mouser.
