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AD7820LR
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Product Detailed Parameters
- Description：IC ADC 8BIT HS TRACK/HOLD 20SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：8
- Sampling Rate (Per Second)：-
- Number of Inputs：-
- Input Type：-
- Data Interface：-
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：3
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：20-SOIC
- Mounting Type：Surface Mount
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Overview
The AD7820LR is an 8-bit CMOS analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It utilizes a flash architecture and features a single-ended input type with one channel. The device employs a parallel interface for data transfer and requires an external reference voltage, typically specified at 4.75 V. It operates on dual 5 V supplies for both analog and digital sections. The component is housed in a 20-pin SOIC package designed for surface mount installation. It supports a minimum operating temperature of -40°C and a maximum of +85°C. Power dissipation is rated at 40 mW.
Feature Summary
- Flash conversion architecture for high-speed digitization
- Single-ended input configuration for straightforward signal interfacing
- Parallel digital output interface for direct microprocessor connection
- External reference voltage capability for flexible system design
Applications
- Industrial process control systems requiring fast response times
- Data acquisition modules for sensor signal conditioning
- Test and measurement equipment utilizing parallel bus architectures
Procurement Notes
Verify the specific suffix designation against official manufacturer documentation to confirm pinout compatibility and electrical specifications. Ensure that the procurement source provides valid traceability for the Analog Devices brand. Confirm RoHS compliance status through the latest datasheet revision before integration into regulated assemblies.
Selection Notes
Select this component when an 8-bit resolution and parallel interface are required for cost-sensitive applications. Consider the 40 mW power dissipation limit during thermal management planning. Verify that the system clock frequency aligns with the device's conversion speed capabilities. Ensure the external reference voltage matches the specified 4.75 V requirement for optimal accuracy.
Part Context
This part belongs to the AD7820 series of 8-bit ADCs from Analog Devices. The series includes variants such as the AD7820LNZ in PDIP packaging. The LR variant specifically denotes the SOIC surface-mount package option within this family of flash converters.
Replacement Considerations
Check for exact pin-compatible alternatives within the AD7820 series. Verify that any substitute maintains the same 8-bit resolution, parallel interface, and 5 V supply requirements.
