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Product Detailed Parameters
- Description：IC DAC 14BIT V-OUT 28SOIC
- 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：28-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：28-SOIC
- Mounting Type：Surface Mount
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Overview
The AD7244JR is a dual, complete, 14-bit voltage output digital-to-analog converter (DAC) fabricated in LC2MOS technology. 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 typical power dissipation of 130 mW. 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 DSP processors and microcontrollers
- Independent asynchronous update control for both DAC channels
Applications
- Industrial process control systems requiring precise voltage generation
- Programmable gain amplifier circuits
- Waveform generation applications
- Direct interfacing with DSP processors and microcontrollers
Procurement Notes
Verify the specific suffix 'JR' corresponds to the 28-pin SOIC package and the J temperature grade (0°C to +70°C). Confirm that the ordering suffix does not alter the functional specifications unless explicitly stated in the manufacturer's documentation. Ensure compatibility with existing PCB footprints for the SOIC-28 package.
Selection Notes
Select the AD7244JR when 14-bit resolution is required for dual-channel applications. Compare against the AD7242JR if 12-bit resolution is sufficient, as they share the same pinout for easy upgrade paths. Consider the operating temperature range; the J version supports 0°C to +70°C, while A or S versions are available for wider industrial or military ranges.
Part Context
The AD7244JR belongs to the AD7242/AD7244 family of LC2MOS DACs. It shares identical pinouts and functionality with the 12-bit AD7242, allowing for design flexibility between 12-bit and 14-bit performance levels without changing the board layout. The 'R' suffix denotes the Small Outline IC (SOIC) package option.
Replacement Considerations
The AD7242JR is a pin-compatible alternative offering 12-bit resolution. For higher precision requirements within the same package, consider the AD7244AQ (CerDIP) or AD7244SQ (CerDIP, extended temp), noting the package change. No direct surface-mount replacements with identical specs are listed in the provided data.
