Complete Single Supply 12-Bit Voltage Output DAC in SO-8

The LTC®1257 is a complete single supply, 12-bit voltage output D/A converter (DAC) in an SO-8 package. The LTC1257 includes an output buffer amplifier, 2.048V voltage reference and an easy to use 3-wire cascadable serial interface. An external reference can be used to override the internal reference and extend the output voltage range to 12V. The power supply current is a low 350µA when operating from a 5V supply, making the LTC1257 ideal for battery-powered applications. The space-saving 8-pin SO package and operation with no external components provide the smallest 12-bit D/A system available.

Applications

* Digital Offset/Gain Adjustment

* Industrial Process Control

* Automatic Test Equipment

* 8-Pin SO Package

* Buffered Voltage Output

* Built-In 2.048V Reference

* 500µV/LSB with 2.048V Full Scale

* 1/2 LSB Max DNL Error

* Guaranteed 12-Bit Monotonic

* 3-Wire Cascadable Serial Interface

* Wide Single Supply Range: VCC = 4.75V to 15.75V

* Low Power: ICC Typ = 350µA with 5V Supply