LTC2633HTS8-LO8#TRMPBF

Overview

The LTC2633HTS8-LO8#TRMPBF is a dual-channel, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It integrates a precision internal reference with a temperature coefficient of 10ppm/°C and operates on a single supply ranging from 2.7V to 5.5V. The device features rail-to-rail output buffers and communicates via a standard 2-wire I²C serial interface supporting clock rates up to 400kHz. Key specifications include a maximum integral nonlinearity (INL) error of ±2.5 LSBs and a typical supply current of 0.4mA at 3V. The part is housed in an 8-lead TSOT-23 package and includes a power-on reset function that sets outputs to a high-impedance state upon initialization.

Feature Summary

• Dual 8-bit DAC channels with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers guaranteed monotonic over –40°C to 125°C
• I²C-compatible serial interface with 400kHz fast mode support
• Power-on reset option for High-Z output state

Applications

• Mobile communications
• Process control and industrial automation
• Portable equipment

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-unit tape and reel configuration, distinct from the standard 2,500-unit reel. Confirm the LO code corresponds to the 2.5V full-scale voltage with High-Z power-on reset behavior. Ensure the HTS8 designation matches the required automotive temperature grade (-40°C to 125°C) and TSOT-23 package type for your design constraints.

Selection Notes

Select this component when a compact dual-channel solution with low power consumption is required. The 8-bit resolution provides adequate precision for applications where cost and size are prioritized over high accuracy. The High-Z power-on reset feature is critical for systems where downstream circuitry must remain inactive during startup. Verify that the 2.7V minimum supply voltage aligns with the system's available power rails.

Part Context

This part belongs to the LTC2633 family, 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' grade denotes the extended automotive temperature range, while the 'O' reset code specifically configures the outputs to a high-impedance state after power-up. The 'L' suffix indicates the 2.5V full-scale internal reference variant.

Replacement Considerations

Direct replacements within the same family include LTC2633HTS8-LI8#TRMPBF (Mid-Scale reset) or LTC2633HTS8-LZ8#TRMPBF (Zero-Scale reset). For different resolutions, consider LTC2633HTS8-LO10#TRMPBF (10-bit) or LTC2633HTS8-LO12#TRMPBF (12-bit). Note that higher resolution variants may have different INL specifications and settling times.