• 简体中文
• English

LTC2631 - Single 12-/10-/8-Bit I2C VOUT DACs with 10ppm/°C Reference

The LTC®2631 is a family of 12-, 10-, and 8-bit voltageoutput DACs with an integrated, high accuracy, low-drift reference in an 8-lead TSOT-23 package. It has a rail-to-rail output buffer that is guaranteed monotonic.

The LTC2631-L has a full-scale output of 2.5V, and operates from a single 2.7V to 5.5V supply. The LTC2631-H has a full-scale output of 4.096V, and operates from a 4.5V to 5.5V supply. A 10ppm/°C reference output is available at the REF pin.

Each DAC can also operate in External Reference mode, in which a voltage supplied to the REF pin sets the fullscale output.

The LTC2631 DACs use a 2-wire, I2C-compatible serial interface. The LTC2631 operates in both the standard mode (clock rate of 100kHz) and the fast mode (clock rate of 400kHz).

The LTC2631 incorporates a power-on reset circuit. Op-tions are available for reset to zero-scale or reset to mid-scale after power-up.

Features Integrated Precision Reference 2.5V Full-Scale 10ppm/°C (LTC2631-L) 4.096V Full-Scale 10ppm/°C (LTC2631-H) Maximum INL Error: 1LSB (LTC2631A-12) Bidirectional Reference: Input or 10ppm/°C Output 400kHz I2C™ Interface Nine Selectable Addresses (LTC2631-Z) Low Noise (0.7mVP-P , 0.1Hz to 200kHz) Guaranteed Monotonic Over Temperature 2.7V to 5.5V Supply Range (LTC2631-L) Low Power Operation: 180μA at 3V Power Down to 1.8μA Maximum (C and I Grades) Power-On Reset to Zero or Mid-Scale Options Double-Buffered Data Latches Guaranteed Operation From –40°C to 125°C (H-Grade) 8-Lead TSOT-23 (ThinSOT™) Package Typical Application

Applications Mobile Communications Process Control and Industrial Automation Automatic Test Equipment Portable Equipment Automotive Optical Networking Packaging

Demo Boards