Analog Devices LTC1458 Product Info

• Quad 12-Bit DAC
• Buffered True Rail-to-Rail Voltage Output
• Maximum DNL Error: 0.5LSB
• 5V Operation, I_CC: 1.1mA Typ (LTC1458)
• 3V Operation, I_CC: 800µA Typ (LTC1458L)
• Internal or External Reference Operation
• Settling Time: 14µs to ±0.5LSB
• Schmitt Trigger On Clock Input Allows Direct Optocoupler Interface
• Power-On Reset and CLR Pin
• SSOP-28 Package
• 3-Wire Cascadable Serial Interface with 250kHz Update Rate
• Low Cost

The LTC1458/LTC1458L are complete single supply, quad rail-to-rail voltage output, 12-bit digital-to-analog converters (DACs) in SO-28 and SSOP-28 packages.They include an output buffer amplifier with variable gain (×1 or ×2) and an easy-to-use 3-wire cascadable serial interface.

The LTC1458 has an on-board reference of 2.048V and a full-scale output of 4.095V in a ×2 gain configuration. It operates from a single 4.5V to 5.5V supply dissipating only 5.5mW (I_CC = 1.1mA typ).

The LTC1458L has an onboard 1.22V reference and a full-scale output of 2.5V in a ×2 gain configuration. It operates from a single supply of 2.7V to 5.5V dissipating 2.4mW.

Excellent DNL, low supply current and a wide range of built-in functions allow these parts to be used in a host of applications when flexibility, power and single supply operation are important.

Applications

• Digital Calibration
• Industrial Process Control
• Automatic Test Equipment
• Low Power Systems