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AD7858AR-REEL
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Product Detailed Parameters
- Description：IC ADC 12BIT 8CH SRL 24-SOIC
- Series：*
- Mfr：Analog Devices Inc.
- Package：Bulk
- Number of Bits：12
- Sampling Rate (Per Second)：-
- Number of Inputs：-
- Input Type：-
- Data Interface：-
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：-
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- Features：-
- Operating Temperature：-
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：24-SOIC
- Mounting Type：Surface Mount
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Overview
The AD7858AR-REEL is an 8-channel, 12-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single 3 V to 5.5 V supply and supports throughput rates up to 200 kSPS. The device features a flexible serial interface compatible with SPI, QSPI, and 8051 protocols. It includes system and self-calibration capabilities with autocalibration on power-up. The input range is 0 to VREF, supporting eight single-ended or four pseudo-differential channels. Power dissipation is typically 25 mW at 5 V and 15 mW at 3.6 V in normal mode.
Feature Summary
- Integrated system and self-calibration with automatic calibration upon power-up to maintain accuracy over time and temperature variations.
- Flexible serial interface supporting multiple communication protocols including SPI, QSPI, and 8051 compatibility for versatile digital integration.
- Configurable input architecture allowing selection between eight single-ended or four pseudo-differential analog input channels.
- Comprehensive power management options including automatic power-down after conversion and sleep modes for low-power applications.
Applications
- Battery-powered systems such as personal digital assistants and mobile communications devices
- Medical instruments requiring precise signal acquisition
- Instrumentation and control systems
- High-speed modems
Procurement Notes
Verify the specific revision level and package type when sourcing components. Confirm that the ordering suffix corresponds to the reel packaging format required for automated assembly processes. Ensure compatibility with existing board designs regarding pin configurations and electrical specifications before finalizing procurement decisions.
Selection Notes
Select the AD7858AR-REEL for applications requiring high-speed sampling with low power consumption. Consider the AD7858L variant if lower power dissipation is prioritized over maximum throughput speed. Evaluate the need for external versus internal reference voltages based on system accuracy requirements and available supply rails.
Part Context
This component belongs to the AD7858 family of high-speed, low-power ADCs. The 'AR' designation indicates a SOIC-24 package version. The '-REEL' suffix specifies tape-and-reel packaging suitable for surface-mount technology assembly lines. This part is distinct from the DIP or SSOP variants within the same product line.
Replacement Considerations
Direct substitutes include the AD7858ARZ. Parameter-equivalent alternatives may include the AD7858BRZ. Verify pinout compatibility and electrical specifications against the original design requirements before implementing any replacement parts.
