REF191ESZ-REEL

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - High precision - Low temperature coefficient - Low dropout voltage - Wide operating range

Package: SOIC-8

Essence: The REF191ESZ-REEL is a voltage reference IC that provides a stable and accurate voltage output for various electronic applications.

Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Output Voltage Range: 1.225V to 5.5V
• Initial Accuracy: ±0.05%
• Temperature Coefficient: 10ppm/°C
• Dropout Voltage: 200mV
• Supply Voltage Range: 2.7V to 40V
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The REF191ESZ-REEL has the following pin configuration:

```

---

| | --| V+ |-- --| |-- --| OUT|-- --| |-- --| GND|-- |____| ```

Pin Descriptions: - V+: Positive supply voltage input - OUT: Voltage reference output - GND: Ground

Functional Features

• High precision voltage reference with low initial accuracy and temperature coefficient.
• Provides a stable voltage output over a wide operating temperature range.
• Low dropout voltage allows for efficient operation even with low input voltages.
• Suitable for use in precision analog circuits, data converters, and other applications requiring accurate voltage references.

Advantages and Disadvantages

Advantages: - High precision and stability - Wide operating range - Low temperature coefficient - Low dropout voltage

Disadvantages: - Relatively high quiescent current compared to some other voltage references - Limited output voltage range

Working Principles

The REF191ESZ-REEL utilizes a bandgap reference circuit to generate a stable and accurate voltage output. It compensates for temperature variations by employing a combination of bipolar and CMOS technologies, resulting in a low temperature coefficient. The internal circuitry ensures a low dropout voltage, allowing for reliable operation even with low input voltages.

Detailed Application Field Plans

The REF191ESZ-REEL is commonly used in the following applications:

1. Precision analog circuits: Provides a stable voltage reference for precise measurements and signal conditioning.
2. Data converters: Ensures accurate voltage references for analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
3. Power management systems: Used as a voltage reference in power supply control circuits to maintain stability and accuracy.
4. Sensor interfaces: Provides a reliable voltage reference for sensor signal conditioning circuits, ensuring accurate measurements.

Detailed and Complete Alternative Models

1. REF192ESZ-REEL: Similar to the REF191ESZ-REEL but with an extended operating temperature range (-55°C to +125°C).
2. REF193ESZ-REEL: Offers a lower initial accuracy of ±0.02% for applications requiring higher precision.
3. REF194ESZ-REEL: Provides a wider output voltage range of 1.225V to 10V for applications requiring higher voltage levels.

These alternative models offer similar functionality and characteristics, allowing users to choose the most suitable option based on their specific requirements.

Word count: 446 words