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AD774BJN
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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 AD774BJN is a monolithic 12-bit successive-approximation analog-to-digital converter manufactured by Analog Devices Inc. It integrates a precision voltage reference, clock circuitry, and three-state output buffers for direct microprocessor interfacing. The device offers a maximum conversion time of 8 µs and supports input ranges of ±5 V, ±10 V, 0–10 V, and 0–20 V. Operating within the commercial temperature range of 0 °C to 70 °C, it utilizes a 28-lead plastic DIP package (N-28). Power requirements include +5 V logic and ±12 V or ±15 V analog supplies.
Feature Summary
- Complete 12-bit SAR ADC with integrated 10 V reference and clock
- Fast conversion time of 8 µs maximum
- Industry-standard pinout compatible with AD574A
- Flexible digital interface supporting 8-bit or 12-bit data reads
Applications
- Industrial process control systems requiring 12-bit accuracy
- Data acquisition modules for 8-bit and 16-bit microprocessors
- Precision measurement instruments utilizing standard analog input ranges
Procurement Notes
Verify the specific grade suffix 'J' corresponds to the 0 °C to 70 °C commercial temperature range. Confirm the package type is the 28-lead plastic DIP (N-28) as indicated by the model designation. Ensure supply voltages match the specified operating ranges for VCC, VEE, and VLOGIC during integration.
Selection Notes
Select the AD774BJN when an 8 µs conversion speed is required alongside industry-standard pin compatibility. Choose this model over the AD674B variant if faster throughput is necessary. Verify that the application environment remains within the 0 °C to 70 °C operational limits defined for the J grade.
Part Context
The AD774BJN 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 improved conversion times and lower power consumption while maintaining pin compatibility. The J grade specifically denotes the commercial temperature variant available in plastic packaging.
Replacement Considerations
The AD674BJN serves as a slower alternative with a 15 µs conversion time but shares identical pinouts and functionality. For military-grade requirements, consider hermetically sealed ceramic DIP versions such as the AD774BAD or AD774BTD.
