LTC2632ACTS8-HZ12#TRMPBF

Overview

The LTC2632ACTS8-HZ12#TRMPBF 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 utilizes 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 a power-on reset function 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
• Power-on reset to zero-scale for consistent system initialization
• 3-wire SPI/MICROWIRE interface supporting clock rates up to 50MHz

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging quantity. Confirm the H-grade designation aligns with the required 4.5V to 5.5V supply range and 4.096V full-scale output. Ensure the Z-power-on reset configuration matches system startup requirements. Check availability through designated sales channels as standard distribution may vary.

Selection Notes

Select this component when a dual-channel 12-bit DAC with high accuracy (±1.5LSB INL) and low drift is required. The H-grade variant is necessary for applications requiring a 4.096V internal reference, necessitating a minimum 4.5V supply. The Z-suffix ensures outputs start at zero upon power-up, which is critical for protecting downstream circuits sensitive to initial voltage states. Compare against L-grade variants if a 2.5V full-scale and lower supply voltage (2.7V) are sufficient.

Part Context

This part belongs to the LTC2632 family of dual voltage-output DACs. Variants differ by resolution (8, 10, or 12-bit), full-scale voltage (2.5V or 4.096V), and power-on reset behavior (zero-scale or mid-scale). The ACTS8 designation specifies the Automotive/Commercial grade A accuracy level within the TSOT-23 package. Other suffixes like I or X denote mid-scale reset options.

Replacement Considerations

Direct substitutes within the same family include LTC2632ACTS8-HI12#TRMPBF (mid-scale reset) or LTC2632ACTS8-LZ12#TRMPBF (2.5V full-scale). Cross-family replacements require matching 12-bit resolution, dual channel architecture, and SPI interface compatibility.