LTC2640HTS8-HZ10#TRMPBF

Overview

The LTC2640HTS8-HZ10#TRMPBF is a single-channel, 10-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 on a single supply voltage ranging from 4.5V to 5.5V. The device incorporates a rail-to-rail output buffer guaranteed monotonic over temperature and utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key specifications include a typical settling time of 4.2µs at ±1LSB, a maximum integral nonlinearity (INL) error of ±1LSB, and power consumption of 200µA at 3V equivalent operation. The unit includes a power-on reset circuit that defaults the output to zero-scale.

Feature Summary

• Integrated 10ppm/°C precision reference yielding 4.096V full-scale output
• 10-bit resolution with ±1LSB maximum INL error
• Power-on reset to zero-scale for consistent system initialization
• Low power operation: 200µA supply current; 4µA in power-down mode

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Optical networking devices

Procurement Notes

Verify the specific suffix #TRMPBF indicates a 500-piece tape and reel packaging configuration as defined in the manufacturer's ordering guide. Confirm the H-grade designation ensures operation within the automotive temperature range of –40°C to +125°C. Ensure the Z-power-on reset option aligns with system startup requirements where zero-scale output is mandatory upon power application.

Selection Notes

Select this component when a 4.096V full-scale output is required with a minimum supply voltage of 4.5V. The H-grade temperature rating is necessary for environments exceeding 85°C. Choose the Z-suffix variant if a zero-scale power-on reset is preferred over mid-scale. Verify that the 50MHz serial clock speed meets the system data throughput requirements.

Part Context

This part belongs to the LTC2640 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The HTS8 package denotes an 8-lead ThinSOT (TSOT-23) plastic housing. The H-grade specifies the extended temperature range, while the Z-suffix configures the internal power-on reset logic to drive the output to zero-scale rather than mid-scale upon initial power application.

Replacement Considerations

Direct functional substitutes within the same family include the LTC2640ITS8-HZ10#TRMPBF (I-grade, industrial temperature) or LTC2640CTS8-HZ10#TRMPBF (C-grade, commercial temperature). For higher resolution needs, the LTC2640HTS8-HZ12#TRMPBF offers 12-bit accuracy with identical pinout and electrical characteristics.