LT1004 Micropower Voltage Reference

Overview

The LT1004 is a precision micropower voltage reference designed for applications requiring stable and accurate voltage references with minimal power consumption. This component is ideal for battery-powered devices, portable instrumentation, and other low-power systems where efficiency and precision are critical. The LT1004 offers excellent temperature stability, low noise, and high accuracy, making it a versatile choice for a wide range of applications.

With its low dropout voltage and minimal quiescent current, the LT1004 is engineered to deliver reliable performance in demanding environments. Its compact form factor and robust design ensure compatibility with space-constrained and power-sensitive designs.

Features

• Low Power Consumption: Operates with minimal quiescent current, making it ideal for battery-powered applications.
• High Accuracy: Provides a precise output voltage with tight tolerances.
• Excellent Temperature Stability: Maintains stable performance across a wide temperature range.
• Low Dropout Voltage: Ensures efficient operation even with low input voltages.
• Low Noise Output: Minimizes interference in sensitive circuits.
• Wide Operating Voltage Range: Compatible with a variety of power supply configurations.
• Compact Package Options: Available in small form factors for space-constrained designs.

Applications

The LT1004 is suitable for a broad spectrum of applications, including but not limited to:

• Portable Electronics: Battery-powered devices such as handheld meters, medical instruments, and consumer electronics.
• Precision Instrumentation: Data acquisition systems, sensors, and test equipment requiring stable voltage references.
• Industrial Control Systems: Process control and automation systems where accuracy and reliability are paramount.
• Communication Equipment: RF modules, transceivers, and other telecom devices needing low-noise voltage references.
• Automotive Electronics: On-board diagnostics, infotainment systems, and other automotive applications.

Electrical Characteristics

The following table summarizes the key electrical specifications of the LT1004:

Absolute Maximum Ratings

• Input Voltage Range: -0.3V to 20V
• Output Voltage Range: 1.2V to 5V (depending on variant)
• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -65°C to +150°C

Typical Performance Characteristics

• Output Voltage Tolerance: ±0.5% (typical)
• Temperature Coefficient: 20ppm/°C (typical)
• Quiescent Current: 50µA (typical)
• Dropout Voltage: 200mV (typical at 1mA load)
• Output Noise Voltage: 10µV_RMS (typical, 10Hz to 10kHz)
• Long-Term Stability: 50ppm/1000 hours (typical)

Package Information

The LT1004 is available in several industry-standard packages to accommodate different design requirements. Below are the details of the available package options:

TO-92 Package

• Package Type: Through-hole, 3-pin
• Dimensions: 4.58mm x 3.81mm x 4.58mm
• Pin Configuration:
  • Pin 1: Input Voltage (V_IN)
  • Pin 2: Ground (GND)
  • Pin 3: Output Voltage (V_OUT)

SOT-23 Package

• Package Type: Surface-mount, 3-pin
• Dimensions: 2.9mm x 1.6mm x 1.3mm
• Pin Configuration:
  • Pin 1: Ground (GND)
  • Pin 2: Output Voltage (V_OUT)
  • Pin 3: Input Voltage (V_IN)

SO-8 Package

• Package Type: Surface-mount, 8-pin
• Dimensions: 4.9mm x 3.9mm x 1.75mm
• Pin Configuration:
  • Pin 1: Output Voltage (V_OUT)
  • Pin 2: Ground (GND)
  • Pin 3: No Connection (NC)
  • Pin 4: No Connection (NC)
  • Pin 5: Input Voltage (V_IN)
  • Pin 6: No Connection (NC)
  • Pin 7: No Connection (NC)
  • Pin 8: No Connection (NC)

Conclusion

The LT1004 micropower voltage reference is a high-performance component designed for precision applications where power efficiency and stability are critical. With its low quiescent current, excellent temperature stability, and compact packaging options, the LT1004 is well-suited for a wide range of industrial, automotive, and consumer electronics applications. Its robust electrical characteristics and flexible package choices make it a reliable solution for designers seeking a high-quality voltage reference.