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AD7888ACHIPS
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Product Detailed Parameters
- Description：AD7888 - 8CH. 12-BIT MICROPOWER
- Series：*
- Mfr：Analog Devices Inc.
- Package：Bulk
- Number of Bits：-
- 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：-
- Supplier Device Package：-
- Mounting Type：-
- Grade：-
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Overview
The AD7888ACHIPS is a high-speed, low-power 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single 2.7 V to 5.25 V power supply and supports throughput rates up to 125 kSPS. The device features eight single-ended analog inputs with an input range of 0 V to VREF. It incorporates a successive-approximation register (SAR) architecture and includes an on-chip 2.5 V reference or allows for external reference input between 1.2 V and VDD. The part utilizes a versatile serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. It is available in 16-lead narrow SOIC and TSSOP packages.
Feature Summary
- Eight single-ended analog input channels multiplexed into an on-chip track-and-hold circuit.
- Flexible power management options including normal operation, full shutdown, autoshutdown, and autostandby modes.
- Integrated 2.5 V internal voltage reference with the capability to accept external references.
- Versatile serial I/O port compatible with multiple industry-standard communication protocols.
Applications
- Battery-powered systems such as personal digital assistants and mobile communications devices.
- Medical instruments requiring low power consumption and compact form factors.
- Instrumentation and control systems needing multi-channel data acquisition.
- High-speed modems utilizing serial interface capabilities.
Procurement Notes
Verify the specific suffix 'ACHIPS' against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements ranging from 2.7 V to 5.25 V. Confirm that the 16-lead TSSOP or SOIC footprint matches the PCB design. Check for ESD sensitivity precautions during handling and assembly.
Selection Notes
Select this component when an 8-channel, 12-bit ADC with low power consumption is required. Consider the SAR architecture for moderate speed applications up to 125 kSPS. Evaluate the need for an internal versus external reference based on system accuracy requirements. Ensure the serial interface protocol matches the host microcontroller's capabilities.
Part Context
The AD7888 series represents a family of micropower, 12-bit ADCs designed for space-constrained applications. The AD7888ACHIPS variant specifically denotes the A-grade version within the 16-lead TSSOP or SOIC package options. It shares core specifications with other AD7888 variants but may differ in packaging or specific performance guarantees defined by the manufacturer's grading system.
Replacement Considerations
Direct pin-compatible replacements are not explicitly listed in the provided source material. Review the AD7887 or other members of the AD7888 family for potential alternatives, ensuring channel count and resolution match the application requirements. Verify electrical characteristics and package dimensions before substitution.
