LTC2633CTS8-HZ12#TRPBF

Overview

The LTC2633CTS8-HZ12#TRPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in an 8-lead TSOT-23 package. It features an integrated precision reference with a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1.5 LSB, a settling time of 4.7µs at 5V, and a typical supply current of 0.5mA. The part includes a power-on reset circuit configured to initialize outputs to zero-scale.

Feature Summary

• Dual-channel 12-bit resolution with rail-to-rail output buffers
• Integrated 4.096V precision reference with ±10ppm/°C temperature coefficient
• I²C interface with selectable standard (100kHz) and fast (400kHz) clock rates
• Power-on reset function initializes DAC outputs to zero-scale
• Guaranteed monotonic operation over the –40°C to 125°C automotive temperature range

Applications

• Mobile communications systems
• Process control and industrial automation
• Power supply margining
• Portable equipment
• Automotive electronics

Procurement Notes

Verify the specific suffix #TRPBF indicates a 2,500-piece tape and reel packaging format as defined in the manufacturer's ordering information. Confirm that the C grade designation aligns with commercial temperature requirements if the application environment exceeds the standard 0°C to 70°C range, although the H-grade temperature performance is listed for the family.

Selection Notes

Select this component when a dual-channel DAC with high accuracy (±1.5 LSB INL) and low power consumption is required in a compact TSOT-23 footprint. Ensure the system supply voltage remains within the 4.5V to 5.5V range specified for the H-grade internal reference configuration. Consider the zero-scale power-on reset feature if downstream circuits must remain inactive during initialization.

Part Context

This part belongs to the LTC2633 family of dual DACs, which offers various combinations of resolution (8-, 10-, or 12-bit), full-scale voltage (2.5V or 4.096V), and power-on reset behaviors. The 'H' designation specifies the 4.096V full-scale output requiring a minimum 4.5V supply, while 'Z' denotes the zero-scale reset option. The 'A' electrical grade provides enhanced linearity compared to standard grades.

Replacement Considerations

Direct replacements within the same family include LTC2633CTS8-HI12#TRPBF (mid-scale reset) or LTC2633CTS8-LZ12#TRPBF (2.5V full-scale). Verify pin compatibility and I²C address configurations when substituting parts with different power-on reset codes or reference voltages.

FAQ

["What is the maximum integral nonlinearity (INL) error for the LTC2633CTS8-HZ12?","The maximum INL error is ±1.5 LSB for the 12-bit version."]

["How does the CA0 pin affect the device operation?","The CA0 pin serves as Chip Address Bit 0 for the I²C interface. Tying it to VCC, GND, or leaving it floating selects one of three available slave addresses."]

["What is the settling time for the DAC outputs?","The settling time is 4.7µs to ±1LSB (±0.024%) when operating at a 5V supply."]