Overview
The AD7820KNZ is a high-speed, 8-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This microprocessor-compatible ADC utilizes a half-flash conversion technique, enabling a conversion time of 1.36 µs. It operates with a single +5 V supply and has an analog input voltage range of 0 V to +5 V. The AD7820KNZ is designed for ease of integration with microprocessors, featuring latched, three-state output buffer circuitry that allows direct connection to a microprocessor data bus or system input port.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8 bits |
| Conversion Time | 1.36 µs |
| Analog Input Voltage Range | 0 V to +5 V |
| Supply Voltage | +5 V |
| Package Type | 20-Lead PDIP |
| Operating Temperature Range | -40°C to 85°C |
| Input Slew Rate | <100 mV/µs |
Key Features
- High-speed conversion using half-flash technique with 31 comparators and two 4-bit ADCs.
- Microprocessor-compatible with latched, three-state output buffer circuitry.
- No external sample-and-hold circuit required for signals with slew rates less than 100 mV/µs.
- Non-three-state overflow output for cascading devices to achieve higher resolution.
- Single +5 V supply operation.
Applications
The AD7820KNZ is suitable for various high-speed data acquisition applications, including:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Any application requiring fast and accurate analog-to-digital conversion.
Q & A
- What is the resolution of the AD7820KNZ ADC?
The AD7820KNZ has an 8-bit resolution. - What is the conversion time of the AD7820KNZ?
The conversion time is 1.36 µs. - What is the analog input voltage range of the AD7820KNZ?
The analog input voltage range is 0 V to +5 V. - Does the AD7820KNZ require an external sample-and-hold circuit?
No, it does not require an external sample-and-hold circuit for signals with slew rates less than 100 mV/µs. - What is the package type of the AD7820KNZ?
The package type is 20-Lead PDIP. - What is the operating temperature range of the AD7820KNZ?
The operating temperature range is -40°C to 85°C. - Can the AD7820KNZ be cascaded for higher resolution?
Yes, it can be cascaded using the non-three-state overflow output. - Is the AD7820KNZ microprocessor-compatible?
Yes, it is designed for ease of microprocessor interface with latched, three-state output buffer circuitry. - What is the supply voltage requirement for the AD7820KNZ?
The supply voltage requirement is +5 V. - What are some typical applications of the AD7820KNZ?
Typical applications include industrial control systems, medical devices, aerospace and defense systems, and automotive systems.
