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Product Detailed Parameters
- Description：IC DAC 14BIT V-OUT 24DIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube,Tube
- Number of Bits：14
- Number of D/A Converters：2
- Settling Time：4µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：SPI
- Reference Type：External, Internal
- Voltage - Supply, Analog：±5V
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：±2 (Max), ±1 (Max)
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：24-DIP (0.300", 7.62mm)
- Supplier Device Package：24-PDIP
- Mounting Type：Through Hole
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Overview
The AD7244JN is a dual, complete, 14-bit voltage output digital-to-analog converter (DAC) fabricated in Linear Compatible CMOS (LC2MOS). It integrates two 14-bit DACs with output buffer amplifiers, a 3 V buried Zener reference, and high-speed serial interface logic. The device operates from ±5 V supplies, providing an analog output range of ±3 V. Key electrical parameters include a settling time of 4 µs to ±1/2 LSB, integral nonlinearity of ±2 LSB max, and differential nonlinearity of ±1 LSB max. It features independent asynchronous control for each channel via separate LDAC inputs.
Feature Summary
- Dual 14-bit resolution with integrated output buffer amplifiers
- On-chip 3 V temperature-compensated buried Zener reference
- High-speed serial interface compatible with DSPs and microcontrollers
- Fast settling time of 4 µs to ±1/2 LSB
Applications
- Industrial process control systems requiring precise voltage generation
- Portable instrumentation utilizing low power consumption
- Audio and video signal processing circuits
- Test and measurement equipment
Procurement Notes
Verify the suffix 'JN' indicates a plastic DIP-24 package with a temperature range of –40°C to +85°C. Confirm that the specific revision of the datasheet matches the production lot requirements. Check for RoHS compliance status as manufacturing processes may vary by date code. Ensure ESD precautions are observed during handling due to the sensitivity of the LC2MOS technology.
Selection Notes
Select the AD7244JN when 14-bit resolution and dual-channel independence are required. Compare against the AD7242 if 12-bit resolution is sufficient, noting the pin-compatible upgrade path. Consider the AD7244JRZ for surface mount applications. Evaluate power dissipation limits, as total power can reach 195 mW max under specified conditions. Ensure the system reference voltage aligns with the internal 3 V reference or external input capabilities.
Part Context
The AD7244JN belongs to the AD7242/AD7244 family of fast, complete dual DACs. It shares the same pinout and serial interface protocol as the 12-bit AD7242, facilitating easy design upgrades. The 'J' suffix denotes the commercial temperature grade, while 'N' specifies the 24-pin plastic DIP package. This component is part of Analog Devices' legacy LC2MOS product line designed for precision mixed-signal applications.
Replacement Considerations
The AD7242JN offers identical pinout and interface but provides 12-bit resolution. For surface mount replacements, the AD7244JRZ is available in a 28-pin SOIC package. Verify that any substitute maintains the ±5 V supply requirement and serial timing specifications.
