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AD7880BQ
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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 AD7880BQ is a monolithic 12-bit successive-approximation analog-to-digital converter (ADC) fabricated in LC2MOS technology. It operates from a single +5 V supply and features a throughput rate of 66 kHz, with a conversion time of 12 μs and an acquisition time of 3 μs. The device includes a power save mode consuming 2 mW typ and normal operation at 25 mW typ. Dynamic performance includes a signal-to-noise ratio (SNR) of 70 dB min and total harmonic distortion (THD) of -80 dB typ. DC accuracy specifications for the B version include integral nonlinearity (INL) and differential nonlinearity (DNL) of ±1 LSB max, full-scale error of ±15 LSB max, and bipolar zero error of ±10 LSB max. It supports three input ranges: 0 to VREF, 0 to 2VREF, and ±VREF.
Feature Summary
- Supports multiple user-determined input ranges including unipolar and bipolar configurations using a single +5 V supply.
- Features low power consumption with a dedicated power save mode suitable for battery-powered applications.
- Provides fast data access times and standard control inputs for easy interfacing with microprocessors and DSPs.
Applications
- Battery powered portable systems
- Digital signal processing
- Speech recognition and synthesis
- High speed modems
- Control and instrumentation
Procurement Notes
Verify the specific ordering suffix 'Q' corresponds to the Cerdip package option as defined in the manufacturer's ordering guide. Confirm that the 'B' temperature grade meets the required industrial operating range of -40 °C to +85 °C. Ensure the voltage reference input configuration aligns with the specified performance requirements, typically tied to VDD.
Selection Notes
Select the AD7880BQ when a 12-bit resolution and 66 kHz sampling rate are required within a single +5 V supply system. Consider this component for designs needing flexible analog input ranges without dual supplies. Evaluate the power save mode if energy efficiency is critical for portable implementations.
Part Context
The AD7880BQ belongs to the AD7880 family of high-speed, low-power ADCs. It is part of Analog Devices' portfolio utilizing LC2MOS mixed-signal technology. The 'Q' suffix indicates a Cerdip package variant, while 'B' denotes the industrial temperature grade with specific linearity error tolerances compared to the 'C' grade.
Replacement Considerations
Publicly confirmed pin-compatible substitutes within the same family include the AD7880BN, AD7880CN, and AD7880CR. These variants share identical functionality but differ in package type (Plastic DIP or SOIC) and temperature/accuracy grades.
