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Product Detailed Parameters
- Description：TWO TERMINAL VOLTAGE REFERENCE,
- Series：*
- Mfr：National Semiconductor
- Package：Bulk
- Type：-
- Number of Elements：-
- Output Type：-
- Voltage - Supply, Single/Dual (±)：-
- Voltage - Input Offset (Max)：-
- Current - Input Bias (Max)：-
- Current - Output (Typ)：-
- Current - Quiescent (Max)：-
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-
- Package / Case：-
- Mounting Type：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The LM236AMX-2.5 is a micropower shunt voltage reference manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed output voltage of 2.49 V with an initial accuracy of up to 1% and a typical temperature coefficient of 20 ppm/°C. The device operates within a supply current range of 10 µA to 10 mA and maintains regulation at currents as low as 10 µA. Designed for surface-mount applications, it utilizes the SOT-23 package (MX suffix) and functions reliably across an industrial temperature range of -40°C to +85°C.
Feature Summary
- Micropower operation with low quiescent current consumption suitable for battery-powered systems
- Integrated bandgap reference circuit providing stable 2.49 V output
- Surface-mount SOT-23 packaging for compact board space utilization
Applications
- Portable instrumentation requiring precise voltage references
- Battery-operated measurement devices
- Data acquisition systems needing stable analog references
Procurement Notes
Verify that the ordering suffix MX corresponds to the SOT-23 surface-mount package configuration. Confirm the manufacturer designation aligns with National Semiconductor legacy documentation or Texas Instruments current datasheets. Ensure the specific grade matches the required initial accuracy and temperature coefficient specifications for your design constraints.
Selection Notes
Select this component when a fixed 2.49 V reference is required in a small surface-mount footprint. It is appropriate for designs prioritizing low power consumption over ultra-high precision. Compare against LM236 variants with different packages or accuracy grades if thermal performance or tighter tolerance is needed.
Part Context
This part belongs to the LM236 family of integrated reference circuits. It shares functional similarities with the LM136 and LM336 series but offers specific performance characteristics tailored for micropower applications. The AMX-2.5 designation indicates the American standard temperature range, SOT-23 package, and 2.49 V nominal output voltage.
