LTC2630CSC6-HM12

Overview

The LTC2630CSC6-HM12 is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It integrates a precision reference yielding a 4.096V full-scale output and operates on a 4.5V to 5.5V supply. The device features a rail-to-rail output buffer, SPI/MICROWIRE compatible 3-wire serial interface, and double-buffered data latches. Key electrical parameters include a maximum integral nonlinearity of ±2 LSB, settling time of 4.8µs at 5V, and power consumption of 200µA in normal mode. It supports power-down current as low as 1.8µA and includes power-on reset options.

Feature Summary

• Integrated 4.096V precision reference with 10ppm/°C drift
• SPI/MICROWIRE compatible 3-wire serial interface with 50MHz clock rate
• Power-on reset to mid-scale (HM suffix)
• Rail-to-rail output buffer with guaranteed monotonicity

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems

Procurement Notes

Verify the specific ordering suffixes against the manufacturer's datasheet to confirm temperature grade, resolution, and power-on reset behavior. Ensure the SC70-6 package footprint matches the design layout. Confirm RoHS compliance status for the specific batch. Check for availability of tape and reel packaging options if required for automated assembly.

Selection Notes

Select this component when a compact 12-bit DAC with an integrated high-accuracy reference is required. The HM suffix indicates a mid-scale power-on reset, suitable for applications where downstream circuits are active during startup. Ensure the supply voltage range (4.5V–5.5V) aligns with the system power rails. Consider the 4.8µs settling time for bandwidth requirements.

Part Context

This part belongs to the LTC2630 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The family offers various combinations of full-scale voltages (2.5V or 4.096V), power-on reset behaviors (zero or mid-scale), and temperature grades (Commercial, Industrial, Automotive). All variants share the same 6-lead SC70 package and serial interface architecture.

Replacement Considerations

Direct replacements within the same family include LTC2630HSC6-LM12 (mid-scale reset, 2.5V FS) or LTC2630HSC6-HZ12 (zero-scale reset, 4.096V FS). Verify pin compatibility and software command set alignment when substituting parts with different reset configurations or full-scale voltages.

FAQ

What is the power-on reset behavior for the LTC2630CSC6-HM12?

The 'HM' suffix indicates that the device resets to mid-scale upon power-up.

What is the maximum operating supply voltage for this part?

The LTC2630-H series, which includes this part, operates from 4.5V to 5.5V.

Does the LTC2630 support supply-as-reference mode?

Yes, the device can be configured to use the supply voltage (VCC) as the reference input via the serial interface.