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LTC2637IDE-LMX8#PBF
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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 14DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：8
- Number of D/A Converters：8
- Settling Time：3.5µs (Typ)
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：I2C
- Reference Type：External, Internal
- Voltage - Supply, Analog：2.7V ~ 5.5V
- Voltage - Supply, Digital：2.7V ~ 5.5V
- INL/DNL (LSB)：±0.05, ±0.5 (Max)
- Architecture：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：14-WFDFN Exposed Pad
- Supplier Device Package：14-DFN (4x3)
- Mounting Type：Surface Mount
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Overview
The LTC2637IDE-LMX8#PBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a selectable internal or external reference, with the 'L' suffix indicating a 2.5V full-scale output and operation from a single 2.7V to 5.5V supply. The device communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes double-buffered data latches, rail-to-rail output buffers, and a power-on reset function configured to mid-scale in external reference mode. The component is housed in a 16-lead MSOP package.
Feature Summary
- Octal 8-bit resolution with rail-to-rail buffered outputs
- Selectable internal (2.5V) or external reference input
- I²C interface with standard and fast mode support
- Power-on reset to mid-scale for external reference mode
Applications
- Mobile communications
- Process control and industrial automation
- Automatic test equipment
- Portable equipment
- Automotive systems
Procurement Notes
Verify the specific ordering suffix LMX8#PBF against official documentation to confirm the mid-scale reset behavior in external reference mode and the tape-and-reel packaging format. Ensure the design supports the required 2.7V to 5.5V supply range and I²C bus timing specifications for reliable operation.
Selection Notes
Select this part when eight independent 8-bit voltage outputs are required in a compact surface-mount package. The external reference option allows flexibility in setting the full-scale output voltage. Consider the 16-lead MSOP package dimensions and thermal characteristics if operating near the upper limits of the temperature range.
Part Context
This component belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions in both DFN and MSOP packages. The 'I' designation indicates an industrial temperature range of –40°C to 85°C. The 'L' variant provides a 2.5V full-scale output, distinguishing it from the 'H' variant which offers 4.096V full-scale.
Replacement Considerations
Direct substitutes within the same family include LTC2637IMS-LMI8#PBF (internal reset) and LTC2637IMS-LZ8#PBF (zero-scale reset). For different resolutions, consider LTC2637IMS-LMX10#PBF or LTC2637IMS-LMX12#PBF, ensuring pin compatibility and software register adjustments.
