LTC2630CSC6-HZ12#TRPBF

Overview

The LTC2630CSC6-HZ12#TRPBF 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 4.096V and operates within a supply voltage range of 4.5V to 5.5V. The device utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key electrical characteristics include a maximum integral nonlinearity (INL) error of ±2 LSB, a typical settling time of 4.8µs at 5V, and a power-down current of 1.8µA maximum for the C-grade. It is housed in a compact 6-lead SC70 package.

Feature Summary

• Integrated Precision Reference: Provides a stable 4.096V full-scale output with a temperature coefficient of 10ppm/°C.
• High Accuracy: Guaranteed monotonic operation with a maximum INL error of ±2 LSB for the standard grade.
• Compact Packaging: Available in a tiny 6-lead SC70 surface-mount package suitable for space-constrained designs.
• Low Power Consumption: Operates with a supply current of approximately 200µA and reduces to 1.8µA maximum in power-down mode.

Applications

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

Procurement Notes

Verify that the specific part number corresponds to the Commercial temperature grade (0°C to 70°C) and the H-grade full-scale voltage (4.096V). Confirm the #TRPBF suffix indicates a 2,500-piece tape and reel packaging format. Ensure the design accounts for the 4.5V minimum supply requirement associated with the internal reference configuration.

Selection Notes

Select this component when a 12-bit resolution and 4.096V full-scale range are required in a minimal footprint. The C-grade offers commercial temperature performance, while I and H grades provide extended ranges if needed. Consider the Supply as Reference mode option if an external precise reference is available, which can lower power consumption compared to the internal reference mode.

Part Context

This part belongs to the LTC2630 family of rail-to-rail DACs. The 'H' designation specifies the 4.096V full-scale output derived from the internal reference, distinguishing it from the 'L' variant which provides 2.5V. The 'Z' suffix indicates a power-on reset to zero-scale, ensuring the output starts at ground potential upon initialization.

Replacement Considerations

Direct replacements within the same family include LTC2630CSC6-HM12#TRPBF, which shares identical electrical specifications but resets to mid-scale upon power-up instead of zero-scale. Other variants like LTC2630CSC6-LZ12#TRPBF offer different full-scale voltages and should be evaluated based on system voltage requirements.

FAQ

What is the power-on reset behavior for the LTC2630CSC6-HZ12?

The 'Z' in the part number indicates that the device incorporates a power-on reset circuit that clears the output to zero scale when power is first applied.

Can the LTC2630 operate with an external reference?

Yes, the device supports a 'Supply as Reference' mode where VCC acts as the reference voltage, or it can be configured to use an external reference if the internal one is not desired.

What is the maximum serial clock frequency?

The LTC2630 supports a serial clock (SCK) frequency of up to 50MHz for its 3-wire SPI/MICROWIRE compatible interface.