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AD7851KR-REEL
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Product Detailed Parameters
- Description：IC ADC 14BIT SRL 333KSPS 24-SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk
- Number of Bits：14
- Sampling Rate (Per Second)：333k
- Number of Inputs：-
- Input Type：-
- Data Interface：-
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：2
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- Features：-
- Operating Temperature：0°C ~ 85°C
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：24-SOIC
- Mounting Type：Surface Mount
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Overview
The AD7851KR-REEL is a 14-bit, serial sampling Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc. It operates from a single 5 V supply and supports a throughput rate of 285 kSPS at temperatures between 0°C and 85°C. The device features a pseudo-differential input with two selectable voltage ranges: 0 V to VREF and ±VREF/2. It incorporates self-calibration and system calibration capabilities to maintain accuracy over time and temperature variations. The ADC utilizes a successive approximation architecture and offers flexible serial interface compatibility with 8051, SPI, QSPI, and microprocessor systems. Typical power consumption is 60 mW in normal mode, with a low-power sleep mode consuming approximately 5 µW.
Feature Summary
- Supports self-calibration and system calibration with autocalibration on power-up to ensure long-term accuracy.
- Features a flexible serial interface compatible with multiple standard protocols including SPI and QSPI.
- Provides dual analog input voltage ranges for versatile signal conditioning applications.
- Includes dedicated power-down modes to minimize energy consumption in battery-operated systems.
Applications
- Digital Signal Processing
- Speech Recognition and Synthesis
- Instrumentation and Control Systems
Procurement Notes
Verify the specific ordering suffix to confirm package type and reel configuration. Ensure the component grade matches the required operating temperature range for your application environment. Cross-reference the datasheet revision to confirm pinout and electrical specifications align with your design requirements before finalizing procurement.
Selection Notes
Select the K grade version when the operating environment requires a commercial temperature range starting from 0°C. This variant guarantees a throughput rate of 285 kSPS within this range. Consider the A grade if operation down to -40°C is necessary, noting the reduced throughput specification at higher temperatures. Evaluate the serial interface mode requirements to ensure compatibility with the host controller.
Part Context
The AD7851KR-REEL belongs to the AD7851 family of high-speed, 14-bit serial ADCs from Analog Devices. This series is designed for applications requiring moderate speed and high resolution with low power consumption. The KR designation indicates the K grade with a 0°C to 85°C operating range, while the REEL suffix denotes tape and reel packaging for automated assembly processes.
Replacement Considerations
Direct replacements include other variants within the AD7851 family such as the AD7851AR or AD7851ARS, depending on the required package style and temperature range. Verify that any substitute maintains the same 14-bit resolution, serial interface compatibility, and power supply requirements to ensure seamless integration into existing designs.
