LTC2633CTS8-HI10

Overview

The LTC2633CTS8-HI10 is a dual-channel, 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It integrates a precision internal reference 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 and guarantees monotonicity across the operating range. Communication is handled via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. The part includes a power-on reset circuit configured to initialize outputs to mid-scale in internal reference mode.

Feature Summary

• Dual 10-bit DACs with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers guaranteed monotonic over –40°C to 125°C
• 2-wire I²C interface with selectable standard or fast mode clock rates
• Power-on reset to mid-scale in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type, temperature grade, and power-on reset configuration. Ensure the supply voltage meets the minimum requirement of 4.5V for the H-grade variant. Confirm lead-free status and tape-and-reel specifications if applicable.

Selection Notes

Select this component when dual-channel conversion is required within an 8-lead TSOT-23 footprint. The H-grade designation indicates suitability for automotive environments (-40°C to 125°C). The HI10 suffix specifies a 10-bit resolution with a 4.096V full-scale output and mid-scale power-on reset. Consider external reference options if higher accuracy or different voltage ranges are needed.

Part Context

This part belongs to the LTC2633 family of dual DACs, which also includes 8-bit and 12-bit variants. The family shares common interface protocols and pinouts but differs in resolution, linearity specifications, and power-on reset behaviors. The C-grade denotes commercial temperature range, while H-grade covers automotive limits.

Replacement Considerations

Direct replacements include other LTC2633 variants with matching resolution and reset configurations, such as LTC2633CTS8-HZ10 for zero-scale reset. Cross-family alternatives like the LTC2635 offer quad channels but require different packaging and pinout considerations.