LTC2630CSC6-LZ8

Overview

The LTC2630CSC6-LZ8 is a single-channel, 8-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 with a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V and utilizes a rail-to-rail output buffer. Communication is handled via a 3-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±0.5 LSB, a settling time of 3.2µs at 3V, and a typical supply current of 180µA.

Feature Summary

• Integrated 2.5V precision reference with 10ppm/°C drift
• Rail-to-rail output buffer with guaranteed monotonicity
• 3-wire SPI/MICROWIRE serial interface with 50MHz clock rate
• Power-on reset to zero-scale for consistent initialization

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive sensor interfaces

Procurement Notes

Verify the specific suffix 'LZ8' corresponds to the 8-bit resolution, zero-scale power-on reset, and 2.5V internal reference configuration. Confirm the package type matches the 6-lead SC70 requirement. Ensure the temperature grade aligns with the application environment, as the base model designation does not explicitly define the operating range without additional context.

Selection Notes

Select this component when a compact 8-bit DAC with low power consumption is required. The 2.5V full-scale range suits applications where the output signal needs to be scaled down or interfaced with lower voltage logic. The zero-scale power-on reset is critical for systems where downstream circuits must remain inactive during startup. Consider the 3-wire interface compatibility with the host microcontroller's available pins.

Part Context

This part belongs to the LTC2630 family of single-channel DACs. The 'L' indicates the 2.5V full-scale version, 'Z' denotes the zero-scale power-on reset option, and '8' specifies the 8-bit resolution. Other variants in the family offer different resolutions (10-bit, 12-bit), mid-scale reset options ('M'), and higher full-scale voltages ('H' for 4.096V).

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2630CSC6-LM8 (mid-scale reset) or LTC2630CSC6-HZ8 (4.096V full-scale). Cross-family replacements may require level shifting or software adjustments due to differences in interface protocols or reference architectures.