LTC1448 Series

Dual 12-Bit Rail-to-Rail Micropower DAC

Catalog

Dual 12-Bit Rail-to-Rail Micropower DAC

Part	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Output Type	Differential Output	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Architecture	Supplier Device Package	Number of Bits	INL/DNL (LSB)	Mounting Type	Data Interface	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case [y]	Package / Case [x]	Reference Type	Package / Case	Package / Case
Analog Devices LTC1448CS8#TRPBF	5.5 V	2.7 V	Voltage - Buffered		2.7 V	5.5 V	String DAC	8-SO	12 bits	0.2 LSB 5.5 LSB	Surface Mount	SPI	70 °C	0 °C	8-SOIC	3.9 mm	0.154 in	External
Analog Devices LTC1448CN8#PBF	5.5 V	2.7 V	Voltage - Buffered		2.7 V	5.5 V	String DAC	8-PDIP	12 bits	0.2 LSB 5.5 LSB	Through Hole	SPI	70 °C	0 °C	8-DIP			External	0.3 in	7.62 mm

Catalog

Dual 12-Bit Rail-to-Rail Micropower DAC

Key Features

• SO-8 Package

• 12-Bit Resolution

• Buffered True Rail-to-Rail Voltage Output

• External Reference Input Can Be Tied to VCC

• Output Swings from 0V to VREF

• 3V and 5V Supply Operation

• Schmitt Trigger on Clock Input Allows Direct Optocoupler Interface

• Power-On Reset Clears DACs to 0V

• 3-Wire Serial Interface

• Maximum DNL Error: 0.5LSB

• Low Cost

Description

The LTC1448 is a dual rail-to-rail voltage output, 12-bit digital-to-analog converter (DAC). It includes rail-to-rail output buffer amplifiers and an easy-to-use 3-wire serial interface. It is available in 8-pin SO and PDIP packages and provides the smallest footprint of any dual 12-bit DAC.The LTC1448 has an external reference input pin (REF) and its outputs swing from 0V to REF. The REF input can be tied to VCCproviding rail-to-rail operation from supplies of 2.7V to 5.5V. (For devices with internal reference see the LTC1446 data sheet.) The LTC1448 dissipates 2.5mW from a 5V supply.The low power supply current and the small SO-8 package make the LTC1448 ideal for battery-powered applications.ApplicationsDigital CalibrationIndustrial Process ControlAutomatic Test EquipmentCellular Telephones