LTC2636IMS-LZ8#PBF

Overview

The LTC2636IMS-LZ8#PBF is an octal, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 16-lead MSOP package and operates on a single supply of 2.7V to 5.5V with a full-scale output of 2.5V. The device includes an integrated 10ppm/°C reference and guarantees monotonicity over the –40°C to 85°C temperature range. It utilizes a 3-wire SPI/MICROWIRE interface with clock rates up to 50MHz. Power-on reset defaults to zero-scale in internal reference mode.

Feature Summary

• Octal 8-Bit Resolution: Provides eight independent DAC channels with guaranteed monotonicity and ±0.5 LSB DNL.
• Integrated Reference: Features a high-accuracy 10ppm/°C internal reference setting a 2.5V full-scale output.
• Power-On Reset: Resets all outputs to zero-scale upon power-up for consistent system initialization.
• Low Power Consumption: Draws 0.9mA at 3V supply voltage.

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment

Procurement Notes

Verify the specific ordering suffix LZ8 corresponds to the 8-bit resolution, zero-scale power-on reset, and industrial temperature grade (-40°C to 85°C). Confirm the MSOP-16 package type matches the design requirements. Ensure compatibility with the 2.7V to 5.5V supply range and 3-wire serial interface protocol.

Selection Notes

Select this component when eight low-cost, 8-bit DAC channels are required with rail-to-rail output capability. The zero-scale power-on reset feature is critical for applications where downstream circuits must remain inactive during startup. Choose the external reference option if a different full-scale voltage than 2.5V is needed.

Part Context

This part belongs to the LTC2636 family of octal DACs available in 12-, 10-, and 8-bit resolutions. Variants differ by full-scale voltage (2.5V or 4.096V), power-on reset behavior (zero-scale or mid-scale), and package type (DFN or MSOP). The IMS-LZ8 variant specifically denotes the industrial grade, MSOP package, zero-scale reset, and 8-bit resolution.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Verify pinout and electrical specifications against other octal DACs if cross-referencing is necessary.

FAQ

What is the power-on reset state for the LTC2636IMS-LZ8?

The LTC2636IMS-LZ8 resets all DAC outputs to zero-scale upon power-up when operating in internal reference mode.

What is the maximum serial clock frequency?

The device supports a serial clock (SCK) frequency of up to 50MHz.

Can the LTC2636IMS-LZ8 operate with an external reference?

Yes, the REF pin can be used as an input for an external reference voltage, which sets the full-scale output. In this mode, the power-on reset defaults to mid-scale.