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Product Detailed Parameters
- Description：IC VREF SHUNT 0.5% TO92-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The LM4040CIZ-2.5/LFT8 is a precision micropower shunt voltage reference from Texas Instruments, offering a fixed output of 2.5V with an initial accuracy of ±0.1%. Housed in a TO-92 package, it operates within a temperature range of -40°C to 85°C and supports a maximum output current of 15mA. The device features a low temperature coefficient of 100 ppm/°C and requires a minimum zener current for regulation ranging from 60µA to 100µA depending on the specific grade.
Feature Summary
- Provides stable fixed voltage reference with tight output tolerance
- Designed for micropower applications with low quiescent current consumption
- Utilizes shunt topology for precise voltage regulation
Applications
- Precision measurement systems requiring stable reference voltages
- Battery-powered equipment where power efficiency is critical
- Data acquisition circuits needing accurate analog-to-digital conversion references
Procurement Notes
Verify the exact suffix LFT8 against the manufacturer's latest documentation to confirm pinout and thermal specifications. Ensure the selected accuracy grade matches the system requirements, as tolerances vary across the LM4040 series. Confirm that the TO-92 package dimensions are compatible with the target PCB layout before finalizing procurement orders.
Selection Notes
Select this component when a 2.5V reference with high precision (±0.1%) is required in a through-hole package. Consider the 100 ppm/°C temperature coefficient for environments with significant thermal fluctuations. Evaluate the 15mA maximum current limit to ensure it meets the load requirements without exceeding the device's dissipation capabilities.
Part Context
This part belongs to the LM4040 family of precision micropower shunt voltage references. The family offers various fixed output voltages including 2.048V, 2.5V, 3V, 4.096V, 5V, 8.192V, and 10V. The LM4040 series is designed to replace Zener diodes in applications requiring better stability and lower temperature coefficients.
Replacement Considerations
LM4040AIZ-2.5/NOPB: Offers tighter initial accuracy of ±0.1% in the same TO-92 package. LM4040CIM3-4.1/NOPB: Provides a different voltage level (4.1V) and surface mount SOT-23 packaging.
