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LTC2634HMSE-LMI8#PBF
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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 10MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：8
- Number of D/A Converters：4
- Settling Time：3.3µs (Typ)
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：SPI
- 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 ~ 125°C
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：10-MSOP-EP
- Mounting Type：Surface Mount
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Overview
The LTC2634HMSE-LMI8#PBF is a quad 8-bit voltage output digital-to-analog converter (DAC) in a 10-lead MSOP package. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates from a single 2.7V to 5.5V supply, draws 0.6mA at 3V, and includes rail-to-rail output buffers guaranteed monotonic over the -40°C to 125°C automotive temperature range. Communication utilizes a 50MHz SPI/MICROWIRE compatible 3-wire serial interface. Power-on reset defaults to mid-scale in internal reference mode.
Feature Summary
- Quad 8-bit DACs with integrated 10ppm/°C precision reference
- Rail-to-rail output buffers with guaranteed monotonicity
- Automotive grade (-40°C to 125°C) with AEC-Q100 qualification
- Power-on reset to mid-scale in internal reference mode
Applications
- Mobile Communications
- Process Control and Industrial Automation
- Automatic Test Equipment
- Portable Equipment
- Automotive Systems
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the MSE package designation corresponds to the 10-lead MSOP form factor required for the target PCB layout. Ensure the HMSE prefix aligns with the specified automotive temperature range and power-on reset configuration.
Selection Notes
Select this part when four independent 8-bit channels are required within an automotive environment. The 2.5V full-scale output suits applications needing lower voltage swings compared to the 4.096V variant. Verify that the 10-lead MSOP package fits the assembly constraints, as the QFN package offers different pinout options like LDAC and CLR.
Part Context
This component belongs to the LTC2634 family, which also includes 10-bit and 12-bit resolutions. Variants exist with 4.096V full-scale outputs (H-series) and different power-on reset behaviors (Z-series for zero-scale). The H-grade specifically denotes the extended automotive operating temperature range up to 125°C.
Replacement Considerations
Direct substitutes include other LTC2634 variants such as LTC2634IMSE-LMI8#PBF for industrial temperature ranges or LTC2634CUD-LMX8#PBF for commercial QFN packages. Cross-model replacements require verifying pin compatibility and ensuring the replacement meets the specific -40°C to 125°C automotive qualification if required.
