LTC1421CG-2.5

Introduction to LTC1421CG-2.5: It is a precision 2.5 V voltage reference IC from Linear Technology (now Analog Devices). The “2.5” denotes the output reference voltage, and “CG” indicates the particular packaging/grade variant. The device provides a stable, low-noise reference for ADCs/DACs and other precision analog front-ends. Key advantages typically include tight initial accuracy, low temperature drift, and modest quiescent current in a compact package. Common applications are precision instrumentation, data acquisition, portable/battery-powered instruments, and any circuit needing a reliable reference voltage. For exact specifications—voltage accuracy, temperature coefficient, noise density, load and line regulation, and quiescent current—consult the LTC1421CG-2.5 datasheet and related application notes.

Here are the key features of LTC1421CG-2.5:
- Fixed 2.5A current limit (per the -2.5 suffix)
- Hot-swap controller for safe plug-in/out of power rails
- Soft-start to limit inrush current
- Drives an external N-channel MOSFET (gate drive)
- Undervoltage lockout (UVLO) and overvoltage protection
- Thermal shutdown protection
- Enable input for manual disable
- Fault/flag output with latch behavior for fault indication
- Low quiescent current
- 8-pin package (CG variant)
Applications: protecting power rails in motherboards, servers, telecom equipment, and other systems requiring controlled inrush and overcurrent protection.

- Pin count: 8 pins (CG package)
- Function: Precision fixed 2.5V voltage reference (bandgap) with buffered output for driving analog circuits (e.g., ADCs/DADs).

Manufacturer: Linear Technology Corporation (LTC), now part of Analog Devices, Inc. (ADI) after the 2017 acquisition.
What kind of company: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits.

Possible application areas for LTC1421CG-2.5:
- Precision voltage reference for ADCs/DACs and instrumentation front-ends
- Shunt regulator/power-management in battery-powered devices
- Stable reference for calibration, sensors, and measurement circuits
- Low-noise reference source for data acquisition, test equipment, and instrumentation amplifiers
- Any circuit requiring a fixed 2.5 V reference with good line/load regulation
Note: verify exact specifications in the datasheet for your design.

An 8-lead plastic SOIC (Small Outline) package, RoHS-compliant (Pb-free).