LTC1257 Datasheet | Linear Technology

Features n 8-Pin SO Package n Buffered Voltage Output n Built-In 2.048V Reference n500µV/LSB with 2.048V Full Scale n1/2LSB Max DNL Error n Guaranteed 12-Bit Monotonic n3-Wire Cascadable Serial Interface n Wide Single Supply Range: VCC = 4.75V to 15.75V n Low Power: ICC Typ = 350µA with 5V Supply APPLICATIONS n Digital Offset/Gain Adjustment n Industrial Process Control n Automatic Test Equipment LTC1257 plete Single Supply 12-Bit Voltage Output DAC in SO-8 DESCRIPTION The LTC®1257 is a plete 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 ponents provide the smallest 12-bit D/A system available. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Daisy-Chained Control Outputs 5V 0.1µF CONTROL OUTPUT 1 VOUT VCC DIN CLK LOAD GND VREF DOUT µP 0.1µF CONTROL OUTPUT 2 VOUT VCC DIN CLK LOAD GND VREF DOUT TO NEXT DAC 1257 TA01 DNL ERROR (LSBs) Differential Nonlinearity vs Input Code - 0.5 0 512 1024 1536 2048 2560 3072 3584 4098 CODE 1257...