LTC2632ACTS8-LZ12

Overview

The LTC2632ACTS8-LZ12 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 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V. Key electrical specifications include a maximum Integral Nonlinearity (INL) error of ±1.5 LSB, a settling time of 4.4µs at 3V, and a typical supply current of 0.4mA at 3V. It utilizes a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz.

Feature Summary

• Dual 12-bit DACs with rail-to-rail output buffers and guaranteed monotonicity
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• Power-on reset function clears outputs to zero-scale
• Low power consumption: 0.4mA typical at 3V supply

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging configuration. Confirm that the LZ code corresponds to the zero-scale power-on reset option for internal reference mode. Ensure the component meets the commercial temperature range requirements of 0°C to 70°C as specified by the C grade.

Selection Notes

Select this part when a dual-channel, high-accuracy 12-bit DAC is required with minimal external components. The integrated 2.5V reference simplifies design compared to external reference solutions. Choose this model over the H-grade variants if the system operates within the 2.7V to 5.5V supply range and requires zero-scale initialization upon power-up.

Part Context

This component belongs to the LTC2632 family, which offers various combinations of resolution (8-, 10-, or 12-bit), accuracy grades, and power-on reset behaviors. The ACTS8 designation specifies the A-grade accuracy (±1.5 LSB INL), commercial temperature range, and TSOT-23 package. Other variants in the series include different full-scale voltages and mid-scale reset options.

Replacement Considerations

Direct substitutes within the same family include LTC2632ACTS8-LI12 (mid-scale reset) and LTC2632ACTS8-LX12 (external reference/mid-scale reset). For lower accuracy requirements, LTC2632ACTS8-LZ10 or LTC2632ACTS8-LZ8 may be considered, noting their respective INL specifications of ±1 LSB and ±0.5 LSB.