Overview
The LM4132AMF-2.5/NOPB, produced by Texas Instruments, is a precision low dropout voltage reference in a SOT-23 package. This device is part of the LM4132 family, which offers performance comparable to the best laser-trimmed bipolar references but in cost-effective CMOS technology. The LM4132 uses EEPROM registers to correct for curvature, temperature coefficient, and accuracy, allowing for package-level programming to overcome assembly shifts. This makes it highly accurate and stable across various operating conditions.
The LM4132AMF-2.5/NOPB is particularly suited for space-critical applications due to its compact SOT-23 packaging and does not require an output capacitor or buffer amplifier, making it ideal for battery-powered solutions.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage Initial Accuracy (A Grade) | TJ = 25°C, VIN = 5 V, ILOAD = 0 mA | -0.05% | 0% | 0.05% | % |
| Temperature Coefficient (A Grade) | 0°C ≤ TJ ≤ 85°C | 10 | - | 20 | ppm/°C |
| Input Voltage Range | VREF + 400 mV to 5.5 V | - | - | - | V |
| Dropout Voltage | ILOAD = 10 mA | 175 | - | 400 | mV |
| Quiescent Current | -40°C ≤ TJ ≤ 125°C | 60 | - | 100 | µA |
| Output Noise Voltage (0.1 Hz to 10 Hz) | - | - | - | 310 | µVPP |
| Short-Circuit Current | -40°C ≤ TJ ≤ 125°C | - | - | 75 | mA |
Key Features
- Precision Voltage Reference: Offers high accuracy and stability, comparable to laser-trimmed bipolar references, but in CMOS technology.
- EEPROM Registers: Allows for package-level programming to correct for curvature, temperature coefficient, and accuracy.
- Low Dropout Voltage: Minimum input to output differential of 400 mV at 10 mA load current.
- Low Quiescent Current: 60 µA typical, making it suitable for battery-powered applications.
- No Output Capacitor Required: Does not need an output capacitor or buffer amplifier.
- Compact Packaging: SOT-23 package, ideal for space-critical applications.
- Multiple Voltage Options: Available in various output voltages including 1.8 V, 2.048 V, 2.5 V, 3 V, 3.3 V, and 4.096 V.
- Custom Voltage Options: Available between 1.8 V to 4.096 V.
- Stable with Low-ESR Ceramic Capacitors: Ensures stability with low-ESR ceramic capacitors.
Applications
- Instrumentation and Process Control
- Test Equipment
- Data Acquisition Systems
- Base Stations
- Servo Systems
- Portable, Battery-Powered Equipment
- Automotive and Industrial
- Precision Regulators
- Battery Chargers
- Communications
- Medical Equipment
Q & A
- What is the primary function of the LM4132AMF-2.5/NOPB?
The LM4132AMF-2.5/NOPB is a precision low dropout voltage reference, providing a stable output voltage with high accuracy.
- What are the available output voltage options for the LM4132 family?
The LM4132 family is available in output voltages of 1.8 V, 2.048 V, 2.5 V, 3 V, 3.3 V, and 4.096 V, with custom options between 1.8 V to 4.096 V.
- What is the typical quiescent current of the LM4132AMF-2.5/NOPB?
The typical quiescent current is 60 µA.
- Does the LM4132AMF-2.5/NOPB require an output capacitor or buffer amplifier?
No, it does not require an output capacitor or buffer amplifier.
- What is the dropout voltage of the LM4132AMF-2.5/NOPB?
The dropout voltage is 400 mV at a 10 mA load current.
- What are the temperature coefficient specifications for the A grade of the LM4132AMF-2.5/NOPB?
The temperature coefficient for the A grade is 10 ppm/°C from 0°C to 85°C and 20 ppm/°C from -40°C to 125°C.
- What is the input voltage range for the LM4132AMF-2.5/NOPB?
The input voltage range is from VREF + 400 mV to 5.5 V.
- What are some common applications of the LM4132AMF-2.5/NOPB?
Common applications include instrumentation and process control, test equipment, data acquisition systems, base stations, servo systems, portable battery-powered equipment, automotive and industrial systems, precision regulators, battery chargers, communications, and medical equipment.
- What is the package type of the LM4132AMF-2.5/NOPB?
The package type is SOT-23.
- How does the LM4132AMF-2.5/NOPB achieve high accuracy and stability?
The device uses EEPROM registers for package-level programming to correct for curvature, temperature coefficient, and accuracy.
