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AD7862ANZ-3
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Product Detailed Parameters
- Description：IC ADC 12BIT DUAL 250KSPS 28DIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：12
- Sampling Rate (Per Second)：250k
- Number of Inputs：-
- Input Type：-
- Data Interface：Parallel
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：2
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：28-DIP (0.600", 15.24mm)
- Supplier Device Package：28-PDIP
- Mounting Type：Through Hole
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Overview
The AD7862ANZ-3 is a dual 12-bit successive approximation analog-to-digital converter (ADC) operating from a single +5 V supply. It features two simultaneous sampling channels with four analog inputs grouped into Channel A and Channel B, selectable via the A0 pin. The device supports an input voltage range of ±2.5 V and includes overvoltage protection up to ±7 V. Key electrical parameters include a maximum conversion time of 3.6 μs, a throughput rate of 250 kSPS, and typical power dissipation of 60 mW in normal mode. It utilizes a high-speed parallel interface for data output.
Feature Summary
- Simultaneous sampling and conversion of two independent channels preserves relative phase information between input signals.
- Integrated internal +2.5 V reference eliminates the need for external reference components in standard applications.
- Automatic power-down mode reduces power consumption significantly after each conversion cycle completes.
- High-speed parallel interface allows direct connection to microprocessors and digital signal processors.
Applications
- AC motor control systems
- Uninterrupted power supplies
- Data acquisition systems
- Communications equipment
Procurement Notes
Verify the specific suffix 'ANZ' corresponds to the 28-lead Plastic DIP package and commercial temperature range (-40°C to +85°C). Confirm that the '-3' designation matches the required ±2.5 V input voltage range for your application. Ensure ESD precautions are observed during handling as the device is electrostatic sensitive.
Selection Notes
Select this component when simultaneous sampling of two channels is required within a ±2.5 V input range. Consider the AD7863 if a 14-bit resolution upgrade is needed while maintaining pin compatibility. Verify that the 250 kSPS throughput and 12-bit accuracy meet system dynamic performance requirements.
Part Context
The AD7862 belongs to Analog Devices' family of high-speed, low-power dual ADCs. It is fabricated using Linear Compatible CMOS (LC2MOS) technology. The part is available in multiple packages including SSOP, SOIC, and DIP, with different suffixes indicating input ranges and temperature grades.
Replacement Considerations
The AD7863 serves as a 14-bit pin-compatible upgrade option. Other variants within the AD7862 series include the AD7862-10 for ±10 V inputs and the AD7862-2 for unipolar 0 V to +2.5 V inputs.
