LTC2632AHTS8-HZ12#TRPBF

Overview

The LTC2632AHTS8-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 a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 4.5V to 5.5V. It supports a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1.5LSB, a settling time of 4.9µs at 5V, and rail-to-rail output buffers. The part is guaranteed monotonic and includes power-on reset functionality that clears outputs to zero-scale.

Feature Summary

• Dual 12-bit DACs with integrated 4.096V precision reference (10ppm/°C drift)
• Maximum INL error of ±1.5LSB with guaranteed monotonicity
• 3-wire SPI/MICROWIRE serial interface supporting clock rates up to 50MHz
• Power-on reset to zero-scale for consistent system initialization

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics

Procurement Notes

Verify the specific ordering suffix #TRMPBF versus #TRPBF against official documentation, as these denote different tape and reel quantities (500-piece vs 2,500-piece). Confirm the automotive temperature grade (H) and electrical grade (A) match design requirements. Ensure supply voltage sequencing adheres to absolute maximum ratings during power-up to prevent REF pin overvoltage.

Selection Notes

Select this component when a dual-channel DAC with high accuracy (±1.5LSB INL) and low drift is required in a compact TSOT-23 package. The H-grade variant necessitates a minimum supply voltage of 4.5V, unlike the L-grade which operates down to 2.7V. Choose the Z suffix if zero-scale power-on reset is preferred over mid-scale reset to ensure safe initial states for downstream circuitry.

Part Context

This part belongs to the LTC2632 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 'A' designation indicates the highest accuracy grade within the family, while 'H' specifies the automotive temperature range (-40°C to 125°C) and higher supply voltage requirement.

Replacement Considerations

Direct substitutes within the same family include LTC2632ACTS8-LZ12#TRPBF (2.5V FS, lower voltage operation) or LTC2632ACTS8-HI12#TRPBF (mid-scale reset instead of zero-scale). Cross-family replacements require matching resolution, interface type, and package constraints.