Overview
The MX7821K/D is a high-speed, microprocessor-compatible 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, offering improved performance with a conversion time of 660ns, significantly faster than the 1.36μs of the 7820. This ADC features a track-and-hold function, enabling it to digitize signals up to 100kHz, and supports dual power supplies and bipolar analog inputs.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Part Number | MX7821K/D |
| Resolution | 8-bit |
| Conversion Time | 660ns |
| Input Type | Bipolar analog inputs |
| Track-and-Hold | Capable of digitizing 100kHz signals |
| Power Supply | Dual power supplies supported |
| Interface | Microprocessor-compatible, appears as a memory location or I/O port |
| Output | Latched, three-state buffered circuitry |
| Package | Plastic Dual-In-Line, Narrow (0.3in), Small-Outline IC, Wide (0.3in) |
| RoHS Status | RoHS non-compliant |
| Product Status | Obsolete |
Key Features
- High-speed conversion with a 660ns conversion time
- Microprocessor-compatible interface, appearing as a memory location or I/O port without needing external logic
- Latched, three-state buffered data outputs for direct connection to a microprocessor data bus or system input port
- Track-and-hold function capable of digitizing 100kHz signals
- Supports dual power supplies and bipolar analog inputs
- Overflow output for cascading devices to achieve higher resolution
- Ratiometric operation enabled by the input/reference arrangement
Applications
- Data acquisition systems
- Industrial process controls
- Automotive and avionics equipment
- Medical devices requiring high-speed ADCs
- Test and measurement equipment
Q & A
- What is the resolution of the MX7821K/D ADC?
The MX7821K/D is an 8-bit analog-to-digital converter. - What is the conversion time of the MX7821K/D?
The conversion time is 660ns. - Does the MX7821K/D support bipolar analog inputs?
Yes, it supports bipolar analog inputs. - What is the track-and-hold capability of the MX7821K/D?
The MX7821K/D can digitize signals up to 100kHz. - Is the MX7821K/D microprocessor-compatible?
Yes, it is microprocessor-compatible and appears as a memory location or I/O port. - What types of packages are available for the MX7821K/D?
The MX7821K/D is available in Plastic Dual-In-Line, Narrow (0.3in), and Small-Outline IC, Wide (0.3in) packages. - Is the MX7821K/D RoHS compliant?
No, the MX7821K/D is RoHS non-compliant. - What is the current product status of the MX7821K/D?
The MX7821K/D is obsolete. - Can the MX7821K/D be cascaded for higher resolution?
Yes, it has an overflow output that allows cascading for higher resolution. - What types of applications is the MX7821K/D suitable for?
The MX7821K/D is suitable for data acquisition systems, industrial process controls, automotive and avionics equipment, medical devices, and test and measurement equipment.
