LTC2633ACTS8-HI12

Overview

The LTC2633ACTS8-HI12 is a dual-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It integrates high-accuracy internal references with a temperature coefficient of 10ppm/°C and operates on a single supply ranging from 4.5V to 5.5V. The device features rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 125°C automotive temperature range, and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1.5 LSB, a typical supply current of 0.5mA at 5V, and a settling time of 4.7µs for 12-bit accuracy.

Feature Summary

• Dual 12-bit DAC channels with integrated 4.096V full-scale reference
• Automotive grade operation from –40°C to +125°C
• High precision: ±1.5 LSB maximum INL and ±0.2% FSR gain error
• Power-on reset configured to mid-scale in internal reference mode

Applications

• Mobile communications systems
• Process control and industrial automation
• Power supply margining
• Portable equipment
• Automotive electronics

Procurement Notes

Verify the specific ordering suffix #TRPBF against the manufacturer's documentation to confirm tape and reel packaging quantities and lead-free status. Ensure the selected variant matches the required power-on reset behavior and supply voltage constraints before procurement.

Selection Notes

Select this component when a dual-channel DAC with automotive temperature ratings and high linearity is required. The HI suffix indicates a 4.096V full-scale output requiring a minimum 4.5V supply. Verify that the system design accommodates the 4.5V to 5.5V operating range and the specific mid-scale power-on reset configuration defined by the 'I' code.

Part Context

This part belongs to the LTC2633 family of dual I²C DACs. Variants within the family differ by resolution (8-, 10-, or 12-bit), full-scale voltage (2.5V or 4.096V), temperature grade (Commercial or Automotive), and power-on reset state. The ACTS8 designation specifies the Automotive temperature grade, TSOT-23 package, and 12-bit resolution.

Replacement Considerations

Direct pin-compatible replacements within the same package and interface include other LTC2633 variants such as LTC2633HCTS8-HI12#TRPBF (if commercial grade is acceptable) or LTC2633ACTS8-LI12#TRPBF (for 2.5V full-scale). Cross-family replacements require verification of I²C compatibility and pinout alignment.