Overview
The LT1790AIS6-1.25#TRPBF is a micropower low dropout series reference from Analog Devices Inc., part of the LT1790 family. This component is designed in a compact 6-lead TSOT-23 package and is ideal for applications requiring high accuracy, low drift, and low power dissipation. The LT1790 series uses curvature compensation and trimmed precision thin-film resistors to achieve high output accuracy and a low temperature coefficient. Each device is post-package trimmed to further enhance its performance characteristics.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Output Voltage | - | 1.2475 | 1.25 | 1.2525 | V |
| Initial Accuracy | - | -0.05% | - | 0.05% | % |
| Temperature Coefficient | TMIN ≤ TA ≤ TMAX | 5 | - | 12 | ppm/°C |
| Line Regulation | 3V ≤ VIN ≤ 18V | 50 | - | 170 | ppm/V |
| Load Regulation (Source) | IOUT = 5mA | 80 | - | 160 | ppm/mA |
| Load Regulation (Sink) | IOUT = 3mA | 70 | - | 110 | ppm/mA |
| Dropout Voltage | VIN - VOUT, ∆VOUT = 0.1%, IOUT = 0mA | 50 | - | 120 | mV |
| Supply Current (No Load) | - | 35 | - | 60 | µA |
| Operating Temperature Range | - | -40°C | - | 85°C | °C |
Key Features
- High Accuracy and Low Drift: The LT1790AIS6-1.25#TRPBF offers high output accuracy and a low temperature coefficient, making it suitable for precise voltage reference applications.
- Low Power Dissipation: This component features low supply current and power dissipation, ideal for battery-operated systems and other low-power applications.
- Compact Package: The 6-lead TSOT-23 package is compact and suitable for space-constrained designs.
- Curvature Compensation and Trimming: Uses curvature compensation and trimmed precision thin-film resistors to achieve high output accuracy and a low temperature coefficient.
- Post-Package Trimming: Each device is post-package trimmed to enhance its performance characteristics.
- Ability to Sink Current: Can operate as a micropower negative voltage reference with the same performance as a positive reference.
Applications
- Battery-Operated Equipment: Ideal for battery-operated systems due to its low supply current and reduced dropout voltage.
- Industrial Control Systems: Suitable for industrial control systems requiring precise voltage references.
- Data Acquisition Systems: Used in data acquisition systems where high accuracy and stability are required.
Q & A
- What is the output voltage of the LT1790AIS6-1.25#TRPBF?
The output voltage is 1.25V with an initial accuracy of ±0.05%.
- What is the temperature coefficient of the LT1790AIS6-1.25#TRPBF?
The temperature coefficient is 5 ppm/°C to 12 ppm/°C over the specified temperature range).
- What is the operating temperature range of the LT1790AIS6-1.25#TRPBF?
The operating temperature range is -40°C to 85°C).
- What is the typical supply current of the LT1790AIS6-1.25#TRPBF?
The typical supply current is 35 µA to 60 µA under no load conditions).
- Can the LT1790AIS6-1.25#TRPBF operate as a negative voltage reference?
Yes, it can operate as a micropower negative voltage reference with the same performance as a positive reference).
- What is the dropout voltage of the LT1790AIS6-1.25#TRPBF?
The dropout voltage is typically 50 mV to 120 mV).
- What is the line regulation of the LT1790AIS6-1.25#TRPBF?
The line regulation is 50 ppm/V to 170 ppm/V over the input voltage range of 3V to 18V).
- What is the load regulation of the LT1790AIS6-1.25#TRPBF?
The load regulation is 80 ppm/mA to 160 ppm/mA for a source current of 5mA and 70 ppm/mA to 110 ppm/mA for a sink current of 3mA).
- In what package is the LT1790AIS6-1.25#TRPBF available?
The component is available in a 6-lead TSOT-23 package).
- What are some typical applications of the LT1790AIS6-1.25#TRPBF?
Typical applications include battery-operated equipment, industrial control systems, and data acquisition systems).
