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AD774BKN
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Product Detailed Parameters
- Description：IC ADC 12BIT SAR 28DIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube,Tube
- Number of Bits：12
- Sampling Rate (Per Second)：-
- Number of Inputs：2
- Input Type：Single Ended
- Data Interface：Parallel
- Configuration：ADC
- Ratio - S/H:ADC：-
- Number of A/D Converters：1
- Architecture：SAR
- Reference Type：Internal
- Voltage - Supply, Analog：±11.4V ~ 16.5V
- Voltage - Supply, Digital：5V
- 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 AD774BKN is a monolithic 12-bit successive-approximation analog-to-digital converter manufactured by Analog Devices. It integrates a high-precision voltage reference, clock circuitry, and three-state output buffers for direct microprocessor interfacing. The device operates on +5 V logic and ±12 V or ±15 V analog supplies. It supports unipolar (0–10 V, 0–20 V) and bipolar (±5 V, ±10 V) input ranges with an 8 µs maximum conversion time. The component utilizes a 28-lead plastic DIP package and is specified for the commercial temperature range of 0 °C to 70 °C.
Feature Summary
- Complete 12-bit SAR ADC with integrated 10 V reference and clock
- Industry standard pinout compatible with AD574A
- 8 µs maximum conversion time
- Three-state digital outputs for bus interface
Applications
- Industrial process control systems
- Data acquisition modules
- Microprocessor-based instrumentation
Procurement Notes
Verify the specific grade requirements against the datasheet Ordering Guide. The AD774BKN designation corresponds to the K grade, which guarantees ±1/2 LSB linearity error within the 0 °C to 70 °C operating range. Confirm that the 28-lead plastic DIP (N-28) package meets the mechanical constraints of the target design.
Selection Notes
Select this model when a fast 12-bit conversion speed is required alongside industry-standard pin compatibility. The K grade offers tighter linearity specifications (±1/2 LSB) compared to the J grade (±1 LSB). Ensure the application environment remains within the 0 °C to 70 °C limit; otherwise, consider the A, B, or T grades for extended temperature operation.
Part Context
The AD774BKN belongs to the AD674B/AD774B family of complete 12-bit A/D converters. These devices are designed as high-speed upgrades to the legacy AD574A, offering faster conversion times and lower power consumption while maintaining pin compatibility. The 'K' suffix identifies the specific linearity grade and commercial temperature rating within this product series.
Replacement Considerations
The AD774BJN serves as a functional substitute within the same family, differing only in linearity specification (±1 LSB vs. ±1/2 LSB) and sharing the identical package and temperature range.
