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AD7880CQ
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Product Detailed Parameters
- Description：IC ADC 12BIT MONO LP 24-CDIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：12
- Sampling Rate (Per Second)：66k
- Number of Inputs：-
- Input Type：-
- Data Interface：Parallel
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：1
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：24-CDIP (0.300", 7.62mm)
- Supplier Device Package：24-CDIP
- Mounting Type：Through Hole
- Grade：-
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Overview
The AD7880CQ is a monolithic 12-bit successive-approximation analog-to-digital converter (ADC) fabricated in Analog Devices' LC2MOS process. It operates from a single +5 V supply and delivers a throughput rate of 66 kS/s with a total conversion time of 12 μs and an acquisition time of 3 μs. The device features a signal-to-noise ratio (SNR) of 70 dB minimum, typically 72 dB, and supports three user-selectable input ranges: 0 V to +5 V, 0 V to +10 V, and ±5 V. Power consumption is 25 mW typical in normal mode and drops to 2 mW in power-save mode. It utilizes a parallel interface with three-state outputs.
Feature Summary
- Integrated track-and-hold amplifier enables high-speed data acquisition without external components.
- Versatile input range configuration allows unipolar or bipolar signal processing using a single +5 V supply.
- Low power architecture includes a dedicated power-save mode for battery-operated applications.
- Fast bus access times facilitate direct interfacing with modern microprocessors and DSPs.
Applications
- Battery-powered portable systems
- Digital signal processing
- Speech recognition and synthesis
- High-speed modems
Procurement Notes
Verify the specific package option 'Q' corresponds to the Cerdip variant when sourcing the AD7880CQ. Confirm that the industrial temperature range (-40°C to +85°C) meets system requirements. Ensure the reference voltage input is properly decoupled and tied to VDD for specified performance. Check for ESD sensitivity precautions during handling.
Selection Notes
Select the AD7880CQ when a 12-bit resolution and 66 kHz sampling rate are required within a single-supply environment. Consider this part if low power consumption is critical, specifically utilizing the power-save mode. Verify that the parallel interface logic levels match the target microprocessor or DSP capabilities.
Part Context
The AD7880CQ belongs to the AD7880 family of high-speed, low-power ADCs. It shares architectural similarities with other parts in the series but differs in package and temperature grade. The 'C' suffix denotes the industrial temperature range, while 'Q' indicates the Cerdip package option.
Replacement Considerations
Publicly confirmed substitute part numbers for the AD7880CQ were not found in the provided documentation. Users should consult official Analog Devices resources for potential pin-compatible or functionally equivalent alternatives.
