Overview
The LM336Z-2.5/LFT1 is a precision 2.5-V shunt regulator diode integrated circuit produced by Texas Instruments. This component operates as a low-temperature-coefficient 2.5-V Zener diode with a dynamic impedance of 0.2 Ω. It is part of the LM336 series, which includes the LM336-2.5 and LM336B-2.5 models. The LM336Z-2.5/LFT1 is designed for applications requiring stable voltage references and can be used in various circuits such as digital voltmeters, power supplies, and operational-amplifier circuitry.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VZ Reference Voltage | IZ = 1 mA, TA = 25°C | 2.44 | 2.49 | 2.54 | V |
| ∆VZ(∆T) Change in Reference Voltage with Temperature | VZ adjusted to 2.490 V, IZ = 1 mA, Full range | 1.8 | 6 | 9 | mV |
| ∆VZ(I) Change in Reference Voltage with Current | IZ = 400 µA to 10 mA, 25°C | 2.6 | 6 | 10 | mV |
| Dynamic Impedance | IZ = 1 mA, f = 1 kHz, 25°C | 0.2 | 0.6 | 1 | Ω |
| Operating Current Range | 400 µA | 10 mA | |||
| Operating Temperature Range | 0°C | 70°C |
Key Features
- Precision 2.5-V Reference Voltage: The LM336Z-2.5/LFT1 provides a stable 2.5-V reference voltage with a low temperature coefficient.
- Wide Operating Current Range: The device operates over a wide current range of 400 µA to 10 mA.
- Low Dynamic Impedance: It features a dynamic impedance of 0.2 Ω, making it suitable for various applications.
- Specified Temperature Stability: The device is characterized for specified temperature stability, ensuring reliable performance across the operating temperature range.
- Easily Trimmed for Minimum Temperature Drift: A third terminal allows for easy trimming of the reference voltage and temperature coefficient.
- Fast Turn-On: The LM336Z-2.5/LFT1 has a fast turn-on time, making it suitable for applications requiring quick response.
Applications
- Digital Voltmeters: The LM336Z-2.5/LFT1 is useful as a precision voltage reference in digital voltmeters.
- Power Supplies: It can be used in power supply circuits to provide a stable reference voltage.
- Operational-Amplifier Circuitry: The device is suitable for use in operational-amplifier circuits requiring a stable voltage reference.
- General Voltage Regulation: It can be used as either a positive or negative voltage reference in various circuits.
Q & A
- What is the reference voltage of the LM336Z-2.5/LFT1?
The reference voltage is 2.5 V with a tolerance of ±1%.
- What is the operating current range of the LM336Z-2.5/LFT1?
The device operates over a current range of 400 µA to 10 mA.
- What is the dynamic impedance of the LM336Z-2.5/LFT1?
The dynamic impedance is 0.2 Ω.
- Can the LM336Z-2.5/LFT1 be trimmed for minimum temperature drift?
- What is the operating temperature range of the LM336Z-2.5/LFT1?
The operating temperature range is from 0°C to 70°C.
- Can the LM336Z-2.5/LFT1 be used as a positive or negative voltage reference?
- What are some common applications of the LM336Z-2.5/LFT1?
- How does the LM336Z-2.5/LFT1 compare to ordinary Zener diodes?
- Can the LM336Z-2.5/LFT1 be used in high-frequency applications?
- What is the typical noise voltage of the LM336Z-2.5/LFT1?
