LTC2657IFE-H12#PBF

Overview

The LTC2657IFE-H12#PBF is an octal 12-bit digital-to-analog converter (DAC) from Analog Devices, housed in a 20-lead thermally enhanced TSSOP package. It features an integrated reference providing a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity, and a maximum integral nonlinearity (INL) error of ±1 LSB. It communicates via a 400kHz I²C interface and supports power-on reset to zero-scale or mid-scale.

Feature Summary

• Octal 12-bit resolution with integrated 2.048V reference for 4.096V full-scale output
• Rail-to-rail output buffers with ultralow crosstalk (0.8 nV·s typical)
• Maximum INL error of ±1 LSB and guaranteed monotonic operation over temperature
• 400kHz I²C serial interface with selectable power-on reset states

Applications

• Mobile communications systems
• Process control and industrial automation
• Instrumentation and automatic test equipment
• Automotive electronic modules

Procurement Notes

Verify the specific suffix H12 indicates the -H option (4.096V FS, 4.5V–5.5V supply) and 12-bit resolution. Confirm the FE package corresponds to the 20-lead thermally enhanced TSSOP. Ensure the I grade matches the required –40°C to 85°C operating range. Check RoHS compliance status as indicated by the #PBF designation.

Selection Notes

Select this part when eight independent voltage outputs are required in a compact footprint. The -H option is necessary if a 4.096V full-scale range is needed, requiring a minimum 4.5V supply. For lower supply voltages down to 2.7V, the -L option with 2.5V full-scale must be used instead. Verify that the ±1 LSB INL specification meets system accuracy requirements.

Part Context

This component belongs to the LTC2657 family of octal DACs. Other variants include 16-bit resolutions (e.g., LTC2657IFE-H16#PBF) and commercial temperature grades (C). The -H suffix denotes the higher full-scale voltage option compared to the -L option. The FE package distinguishes it from the QFN (UFD) package variant.

Replacement Considerations

Publicly confirmed substitutes are not available in the provided documentation. Direct replacements within the same family require matching resolution (12-bit), package (FE), and temperature grade (I).