LTC2654CGN-L12#PBF

Overview

The LTC2654CGN-L12#PBF is a quad 12-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices, housed in a 16-lead narrow SSOP package. It features an integrated reference with a maximum temperature coefficient of 10ppm/°C, providing a full-scale output of 2.5V. The device operates on a single supply voltage ranging from 2.7V to 5.5V and supports SPI/Microwire compatible 4-wire serial interfaces with clock rates up to 50MHz. Key electrical specifications include a settling time of 4.2µs, integral nonlinearity (INL) of ±1 LSB, and differential nonlinearity (DNL) of ±0.1 LSB. It guarantees monotonicity over the commercial temperature range of 0°C to 70°C.

Feature Summary

• Quad 12-bit resolution with integrated 10ppm/°C max reference
• Rail-to-rail output buffers with ultralow crosstalk (<3nV•s)
• Selectable internal or external reference modes
• Power-on reset configurable to zero-scale or mid-scale

Applications

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

Procurement Notes

Verify the specific ordering suffix 'GN' corresponds to the 16-lead Narrow SSOP package and 'L12' indicates the 12-bit resolution with 2.5V full-scale internal reference. Confirm the 'C' grade matches the required 0°C to 70°C operating temperature range for the application environment.

Selection Notes

Select this component when four independent 12-bit DAC channels are required in a compact SSOP footprint. Ensure the system supply voltage remains within the 2.7V to 5.5V range. Consider the external reference option if higher precision or different full-scale voltages are needed beyond the integrated 2.5V limit.

Part Context

This part belongs to the LTC2654 family, which also includes 16-bit variants (LTC2654B/LTC2654) and high-voltage options (LTC2654-H). The CGN-L12 variant specifically denotes the commercial temperature grade, 12-bit resolution, and narrow SSOP packaging, distinguishing it from the QFN UF package or industrial I-grade counterparts.

Replacement Considerations

Direct pin-compatible replacements within the same package include other LTC2654 variants such as LTC2654CGN-L16#PBF (16-bit) or LTC2654IGN-L12#PBF (Industrial grade). Verify that the INL and DNL specifications of the substitute meet the circuit requirements.