LTC2631CTS8-HZ10#TRMPBF

Overview

The Analog Devices LTC2631CTS8-HZ10#TRMPBF is a single 10-bit voltage-output digital-to-analog converter (DAC) housed in an 8-lead TSOT-23 package. It features an integrated precision reference with a full-scale output of 4.096V, requiring a supply voltage between 4.5V and 5.5V. The device utilizes 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 LSB, a typical settling time of 4.2µs at 5V, and bidirectional reference capabilities. The part includes a power-on reset circuit configured to clear the output to zero-scale upon initialization.

Feature Summary

• Integrated 10ppm/°C precision reference providing a 4.096V full-scale output
• I²C serial interface with nine selectable slave addresses via CA0 and CA1 pins
• Power-on reset function defaults output to zero-scale
• Low power consumption: 200µA typical supply current at 5V; 1.8µA maximum in power-down mode

Applications

• Mobile communications systems
• Process control and industrial automation instrumentation
• Portable battery-powered equipment
• Automotive electronic modules
• Optical networking signal conditioning

Procurement Notes

Verify the specific ordering suffix #TRMPBF confirms the 500-unit tape and reel packaging configuration. Confirm the 'H' grade designation matches the required -40°C to 125°C automotive temperature range for the application environment. Ensure the 'Z' suffix aligns with the zero-scale power-on reset requirement rather than mid-scale options.

Selection Notes

Select this model when a 4.096V internal reference is required, necessitating a minimum 4.5V supply voltage. Choose the H-grade variant if operation beyond 70°C is necessary. The Z-suffix ensures the DAC output initializes to 0V upon power-up. For applications requiring mid-scale initialization or lower supply voltages (2.7V–5.5V), alternative suffixes such as LM10 or LZ10 must be considered.

Part Context

This component belongs to the LTC2631 family of single-channel voltage-output DACs available in 8-, 10-, and 12-bit resolutions. The family shares identical pinouts and I²C interfaces but varies by resolution accuracy, internal reference voltage (2.5V vs 4.096V), and operating temperature grades (C, I, and H). The CTS8-HZ10 variant specifically targets higher accuracy requirements within the automotive temperature range.

Replacement Considerations

Direct functional replacements within the same package and specification profile include other LTC2631 variants with matching 10-bit resolution, 4.096V reference, and zero-scale reset, such as LTC2631HZ10#TRMPBF. Verify that any substitute maintains the 4.5V minimum supply requirement and I²C addressability.