LTC2630ACSC6-LM12

Overview

The LTC2630ACSC6-LM12#TRMPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference providing a full-scale output of 2.5V and operates within a supply voltage range of 2.7V to 5.5V. The device incorporates a rail-to-rail output buffer and guarantees monotonicity over the specified temperature range. Key electrical parameters include a maximum integral nonlinearity (INL) error of ±1 LSB for the A-grade device, a typical supply current of 180µA at 3V, and a power-down current of 1.8µA maximum. It utilizes a 3-wire SPI/Microwire compatible serial interface with clock rates up to 50MHz.

Feature Summary

• Integrated Precision Reference: Provides a stable 2.5V full-scale output with a low drift of 10ppm/°C.
• High Accuracy: A-grade specification ensures a maximum Integral Nonlinearity (INL) error of ±1 LSB.
• Rail-to-Rail Output: Features a guaranteed monotonic rail-to-rail output buffer capable of driving capacitive loads up to 500pF.
• Low Power Consumption: Operates with a typical supply current of 180µA at 3V and reduces to 1.8µA maximum in power-down mode.

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-unit tape and reel packaging quantity. Confirm that the 'A' grade designation corresponds to the required ±1 LSB INL specification for your application. Ensure the SC-70-6 package footprint matches your PCB design constraints. Check for RoHS compliance status as indicated in the manufacturer's documentation.

Selection Notes

Select this component if a 12-bit resolution with high linearity (±1 LSB INL) is required in a minimal 6-lead SC-70 package. Choose the 'L' variant for operation down to 2.7V supplies where a 2.5V full-scale output is suitable. Consider the 'M' power-on reset option if mid-scale initialization is preferred over zero-scale. Verify that the 50MHz serial interface speed meets your system's timing 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 accuracy grades, power-on reset options, and full-scale voltages (2.5V or 4.096V). All variants share the same compact 6-lead SC-70 package and SPI-compatible interface, allowing for pin-compatible design flexibility across different performance and voltage requirements.

Replacement Considerations

Direct pin-compatible replacements within the same series include other LTC2630 variants such as LTC2630ACSC6-HM12#TRMPBF (4.096V FS) or LTC2630ISC6-LM12#TRMPBF (Industrial temp grade). Ensure that any substitute matches the specific INL grade ('A' vs standard) and the power-on reset behavior ('M' vs 'Z') required by the circuit design.

FAQ

What is the power-on reset behavior for the LTC2630ACSC6-LM12?

The 'M' suffix in the part number indicates that the device resets to mid-scale upon power-up. This is distinct from the 'Z' suffix, which resets to zero-scale.

What is the maximum serial clock frequency supported?

The LTC2630 supports a serial clock (SCK) frequency of up to 50MHz when operating within the specified voltage and temperature ranges.

How does the device handle capacitive loads?

The integrated rail-to-rail output amplifier is stable when driving capacitive loads of up to 500pF without requiring external compensation components.