LTC2633CTS8-HZ8#TRPBF

Overview

The LTC2633CTS8-HZ8#TRPBF is a dual 8-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 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single 2.7V to 5.5V supply and 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 ±0.5 LSB, a settling time of 3.4µs at ±1 LSB for 8-bit resolution, and a supply current of 0.4mA at 3V. The part includes a power-on reset circuit configured to clear outputs to zero-scale upon initialization.

Feature Summary

• Dual-channel 8-bit DAC with rail-to-rail output buffers and guaranteed monotonicity over the operating temperature range.
• Integrated precision reference providing a 2.5V full-scale output with a low drift of 10ppm/°C.
• I²C-compatible serial interface supporting standard mode (100kHz) and fast mode (400kHz) clock rates.
• Power-on reset function clears both DAC outputs to zero-scale to ensure consistent system initialization.

Applications

• Mobile communications systems requiring compact analog signal generation.
• Process control and industrial automation instrumentation.
• Portable equipment with strict power and size constraints.
• Automotive electronic modules.

Procurement Notes

Verify the specific suffix #TRPBF indicates a tape and reel packaging quantity of 2,500 pieces as defined in the manufacturer's ordering information. Confirm that the C-grade designation aligns with the required commercial temperature range of 0°C to 70°C for the target application environment. Ensure the H-grade alternative is considered if operation below 0°C or above 70°C is necessary, as the C-grade specifications do not extend beyond this range.

Selection Notes

Select this component when a dual-channel, low-pin-count DAC with an internal reference is required for space-constrained designs. The 8-bit resolution is suitable for applications where ±0.5 LSB INL accuracy is sufficient. Choose the LTS8 package variant if the 2.5V full-scale range meets the system voltage requirements; otherwise, consider the H-grade variants for a 4.096V output span. Verify that the I²C address configuration via the CA0 pin does not conflict with other devices on the bus.

Part Context

This part belongs to the LTC2633 family of dual DACs, which offers various combinations of resolution (8, 10, or 12 bits), power-on reset behaviors, and full-scale voltages. The 'CTS8' designation specifies the Commercial temperature grade (0°C to 70°C) and the 8-lead TSOT-23 package. The 'HZ8' suffix indicates the 8-bit resolution and the Zero-Scale power-on reset option. This specific configuration provides a cost-effective solution for applications prioritizing low power consumption and minimal board area.

Replacement Considerations

Direct replacements within the same family include the LTC2633CHT8-HZ8#TRPBF for extended temperature ranges (-40°C to 125°C). For higher resolution needs, the LTC2633AHTS8-HI12#TRPBF offers 12-bit accuracy but requires a higher minimum supply voltage of 4.5V. Ensure any substitute maintains the 8-lead TSOT-23 footprint and I²C interface compatibility.