Overview
The AD7541AKR is a high-performance, 12-bit monolithic multiplying digital-to-analog converter (DAC) produced by Analog Devices Inc. It is fabricated using advanced, low noise, thin film, complementary metal-oxide semiconductor (CMOS) technology. This device is functionally and pin compatible with the industry standard AD7541 and offers improved specifications and performance over its predecessor. The AD7541AKR is available in 18-lead PDIP, 18-lead PLCC, and 18-lead SOIC packages.
The improved design ensures that the AD7541AKR is latch-up free, eliminating the need for output protection Schottky diodes. It uses laser wafer trimming to achieve full 12-bit endpoint linearity with several high-performance grades.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Resolution | 12 bits | ||
| Gain Error | ±1/2 LSB (typ), ±1 LSB (max) | ||
| Gain Error Temperature Coefficient | 2 ppm/°C (typ), 5 ppm/°C (max) | ||
| Digital-to-Analog Charge Injection Energy | Typically 20% less than AD7541 | nV-sec | VREF = GND |
| Differential Nonlinearity | 1/2 LSB (max) | Over operating temperature range | |
| Power Supply Range | 5 V to 16 V | V | |
| Current Consumption | 2 mA (max) | mA | |
| Operating Temperature Range | 0°C to +70°C | °C | |
| Package Types | 18-lead PDIP, 18-lead PLCC, 18-lead SOIC |
Key Features
- Compatibility: The AD7541AKR can be used as a direct replacement for any AD7541-type device.
- TTL/CMOS Compatible Digital Inputs: Designed to have a ±1 µA maximum input current requirement to avoid loading the driving circuitry.
- Improved Specifications: Reduced gain error, lower gain error temperature coefficient, and reduced digital-to-analog charge injection energy compared to the AD7541.
- Latch-Up Proof: No output protection Schottky diodes are required.
- Laser Wafer Trimming: Provides full 12-bit endpoint linearity with high performance grades.
- Monotonicity: All grades are guaranteed monotonic to 12 bits over the operating temperature range.
Applications
The AD7541AKR is suitable for various applications requiring high-performance digital-to-analog conversion, such as:
- Industrial Control Systems: For precise analog output control in industrial automation.
- Medical Equipment: Where high accuracy and reliability are critical.
- Aerospace and Defense: For applications requiring robust and reliable DAC performance.
- Test and Measurement Equipment: For generating precise analog signals.
Q & A
- What is the resolution of the AD7541AKR?
The AD7541AKR has a resolution of 12 bits.
- What are the key improvements over the AD7541?
The AD7541AKR offers reduced gain error, lower gain error temperature coefficient, reduced digital-to-analog charge injection energy, and is latch-up proof.
- What types of packages are available for the AD7541AKR?
The AD7541AKR is available in 18-lead PDIP, 18-lead PLCC, and 18-lead SOIC packages.
- Is the AD7541AKR compatible with the AD7541?
- What is the operating temperature range of the AD7541AKR?
The operating temperature range is 0°C to +70°C.
- What is the power supply range for the AD7541AKR?
The power supply range is 5 V to 16 V.
- Does the AD7541AKR require output protection Schottky diodes?
No, the AD7541AKR is latch-up proof and does not require output protection Schottky diodes.
- What is the maximum differential nonlinearity of the AD7541AKR?
The maximum differential nonlinearity is 1/2 LSB.
- Are the digital inputs of the AD7541AKR TTL/CMOS compatible?
- What is the typical current consumption of the AD7541AKR?
The typical current consumption is 2 mA.
