LTC2630AISC6-LM12

Overview

The Analog Devices LTC2630AISC6-LM12 is a single-channel, 12-bit voltage-output digital-to-analog converter housed in a 6-lead SC70 package. It features an integrated precision reference providing a full-scale output of 2.5V and operates from a single 2.7V to 5.5V supply. The device includes a rail-to-rail output buffer, guaranteed monotonicity, and double-buffered data latches. It communicates via a 3-wire SPI/Microwire compatible interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) of ±1 LSB, a typical settling time of 4.4µs at 3V, and a supply current of 180µA. The 'I' grade indicates an industrial operating temperature range of –40°C to 85°C.

Feature Summary

• Integrated Precision Reference: Provides a stable 2.5V full-scale output with a low drift of 10ppm/°C.
• High Accuracy: Guaranteed monotonic operation over the full temperature range with a maximum INL error of ±1 LSB for the A-grade device.
• Compact Packaging: Utilizes a tiny 6-lead SC70 package, establishing a benchmark for size and integration in 12-bit DACs.
• Simplified Interface: Operates with a simple 3-wire serial interface (SPI/Microwire compatible) supporting clock rates up to 50MHz.

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 the exact configuration. The 'I' suffix denotes the industrial temperature grade (–40°C to 85°C), while 'LM' specifies the mid-scale power-on reset and 2.5V internal reference. Confirm that the required tape and reel quantity matches the available packaging options, such as 500-piece or 2,500-piece reels, as defined by the TRMPBF or TRPBF suffixes.

Selection Notes

Select this component when a single-channel, high-accuracy 12-bit DAC is required in a minimal footprint. The A-grade ensures tighter linearity specifications (±1 LSB INL) compared to standard grades. Ensure the application supply voltage falls within the 2.7V to 5.5V range suitable for the 'L' variant. Consider the power-on reset behavior; the 'M' suffix resets to mid-scale, which may be necessary if downstream circuits are sensitive to zero-scale outputs during initialization.

Part Context

The LTC2630AISC6-LM12 belongs to the LTC2630 family of single-channel DACs. This family offers various combinations of resolution (8-, 10-, and 12-bit), accuracy grades, and temperature ranges. The specific part integrates a 2.5V reference and is designed for applications requiring low power consumption and small board space. It complements other members like the LTC2631 (I2C interface) and LTC2633 (dual channel) within the broader portfolio of compact voltage-output DACs.

Replacement Considerations

Direct pin-compatible replacements within the same series include other LTC2630 variants with different resolutions or accuracy grades, such as the LTC2630ISC6-HM12#TRPBF (4.096V reference) or LTC2630ISC6-LZ12#TRPBF (zero-scale reset). For interface changes, the LTC2631 series offers I2C compatibility but requires a TSOT-23-8 package. Verify that any substitute meets the specific INL, settling time, and temperature range requirements of the design.