LTC2632AHTS8-LZ12#TRPBF

Overview

The LTC2632AHTS8-LZ12#TRPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V and 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 4.4µs at 3V, and low power consumption of 0.4mA at 3V. The unit is housed in an 8-lead TSOT-23 package and supports power-on reset to zero-scale.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V precision reference (10ppm/°C)
• Maximum INL error of ±1.5LSB for high accuracy
• Rail-to-rail output buffers with guaranteed monotonicity
• Power-on reset to zero-scale in internal reference mode

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C as defined in the selection guide. Ensure compatibility with the 2.7V to 5.5V supply requirement for the L-series full-scale voltage configuration.

Selection Notes

Select this part for applications requiring dual channels with high linearity (±1.5LSB max INL). The LZ12 suffix ensures the outputs reset to zero-scale upon power-up, which is critical for safety or initialization-sensitive downstream circuits. Compare against HI12 variants if mid-scale reset is preferred or if a 4.096V full-scale range is required with a 4.5V minimum supply.

Part Context

This component belongs to the LTC2632 family of dual DACs available in 8-, 10-, and 12-bit resolutions. The 'A' grade denotes the highest accuracy class with ±1.5LSB INL. The 'H' indicates the automotive temperature grade, while 'L' specifies the 2.5V full-scale internal reference. The 'TS8' package is the 8-lead plastic TSOT-23 form factor.

Replacement Considerations

Publicly confirmed substitutes within the same family include LTC2632ACTS8-LI12#TRMPBF (mid-scale reset, 500-unit reel) and LTC2632ACTS8-HI12#TRMPBF (4.096V FS, mid-scale reset). Verify that any replacement matches the specific power-on reset behavior and full-scale voltage requirements of the design.