Features and Benefits
- 12-Bit CMOS DAC with
On-Chip Voltage Reference
- Three Selectable Output Ranges
-5 V to + 5 V, 0 V to +5 V, 0 V to +10 V
- Serial Interface
- 300 kHz DAC Update Rate
- Small Size: 16-Lead DIP or SOIC
- Nonlinearity: ±1/2 LSB Tmin to Tmax
- Low Power Dissipation: 100 mW Typical
- Process Control
- Industrial Automation
- Digital Signal Processing Systems
- Input/Output Ports
The AD7243 is a complete 12-bit, voltage output, digital-toanalog converter with output amplifier and Zener voltage reference on a monolithic CMOS chip. No external trims are required to achieve full specified performance.
The output amplifier is capable of developing +10 V across a 2 kΩ load. The output voltage ranges with single supply operation are 0 V to +5 V or 0 V to +10 V, while an additional bipolar ±5 V output range is available with dual supplies. The ranges are selected using the internal gain resistor.
The data format is natural binary in both unipolar ranges, while either offset binary or two’s complement format may be selected in the bipolar range. A CLR function is provided which sets the output to 0 V in both unipolar ranges and in the two’s complement bipolar range, while with offset binary data format, the output is set to –REFIN. This function is useful as a power-on reset as it allows the output to be set to a known voltage level.
The AD7243 features a fast versatile serial interface which allows easy connection to both microcomputers and 16-bit digital signal processors with serial ports. The serial data may be applied at rates up to 5 MHz allowing a DAC update rate of 300 kHz. A serial data output capability is also provided which allows daisy chaining in multi-DAC systems. This feature allows any number of DACs to be used in a system with a simple 4-wire interface. All DACs may be updated simultaneously using LDAC.
The AD7243 is fabricated on Linear Compatible CMOS (LC2 MOS), an advanced, mixed technology process. It is packaged in 16-lead DIP and 16-lead SOIC packages.
DACPORT is a registered trademark of Analog Devices, Inc.
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Tools & Simulations
Precision DAC Error Budget Tool
The Precision DAC Error Budget Tool is a web application that calculates the DC Accuracy of precision DAC signal chains. It shows how the static errors accumulate throughout your signal chain to quickly evaluate the design tradeoffs. Calculations include the DC errors introduced by Voltage References, Operation Amplifiers and Precision DACs.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.