Serial Input, Voltage Output 12-Bit D/A Converter
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
The AD7243 is a complete 12-bit, voltage ouptut, digital-to-analog 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 +10V across a 2k(Ohm) load. The output voltage ranges with single supply operation are 0 to +5 V or 0 to +10V, while an additional bipolar ±5 V ouput 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 2s complement format may be selected in the bipolar range. A CLR funtion is provided which set the output to 0 V in both unipolar ranges and in the 2s complement bipolar range, while with offset binary data format, the output is set -REFIN. This function is useful as a power-on reset as it allows the ouput 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 (LC2MOS), an advanced, mixed technology process. It is packaged in 16-pin DIP and 16-pin 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.
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.