LTC2642ACMS-16#PBF

Overview

The LTC2642ACMS-16#PBF is a 16-bit unbuffered voltage output digital-to-analog converter (DAC) from Analog Devices. It operates on a single 2.7V to 5.5V supply with a typical current consumption of 120µA. The device features a 3-wire SPI/Microwire compatible serial interface supporting clock rates up to 50MHz. Key electrical specifications include ±0.5LSB DNL, ±0.5LSB INL, and a settling time of 1µs to 16 bits. It is housed in a 10-lead MSOP package and guaranteed monotonic over the commercial temperature range of 0°C to +70°C.

Feature Summary

• 16-bit resolution with ±0.5LSB integral and differential nonlinearity errors
• Low power consumption of 120µA typical supply current
• Fast 1µs settling time for 16-bit accuracy
• Power-on reset circuit sets DAC output to midscale

Applications

• High resolution offset and gain adjustment
• Process control and industrial automation systems
• Automatic test equipment
• Data acquisition systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements, as the device supports 2.7V to 5.5V supplies. Confirm that the unbuffered output architecture meets the load driving requirements of the application without degrading linearity performance.

Selection Notes

Select this component when 16-bit precision and low power are required in a compact form factor. The unbuffered output requires loads greater than 60kΩ to maintain specified linearity; use an external amplifier if higher drive capability is needed. The LTC2642 variant specifically provides midscale power-up state, which is suitable for bipolar configurations using external op-amps.

Part Context

This part belongs to the LTC2641/LTC2642 family of high-performance DACs. The 'A' grade indicates tighter performance specifications compared to standard grades. The 'C' suffix denotes the commercial temperature range (0°C to +70°C). The 'MS' indicates the 10-lead MSOP package, while '16' specifies the 16-bit resolution variant within the series.

Replacement Considerations

Direct replacements within the same family include LTC2642CMS-16#PBF (standard grade) or LTC2642AIMS-16#PBF (industrial temperature range). For applications requiring zero-scale power-up instead of midscale, consider the LTC2641 series.