Series Voltage References

The LT™1461 is a family of low dropout micropower bandgap references that combine very high accuracy and low drift with low supply current and high output drive.The LT1461 family draws only 35µA of supply current, making them ideal for low power and portable applications, however their high 50mA output drive makes them suitable for higher power requirements, such as precision regulators.

The LTC™1258/LTC1258-2.5/LTC1258-3/LTC1258-4.1/LTC1258-5 are micropower bandgap references that combine high accuracy and low drift with very low supply current and small package size. The combination of ultralow quiescent current and low dropout voltage of only 200mV max. makes them ideal for battery-powered equipment.

The LT1790 is a family of SOT-23 micropower low dropout series references that combine low drift and high accuracy with small package size and low power dissipation. These micropower references use curvature compensation to obtain a low temperature coefficient and trimmed precision thin-film resistors to achieve high output accuracy. In addition, each LT1790 is post-package trimmed to greatly reduce the temperature coefficient and increase the output accuracy. Output accuracy is further assured by excellent line and load regulation. Special care has been taken to minimize thermally induced hysteresis.

The LT®1236 is a precision reference that combines excellent long-term stability and high output accuracy with ultralow drift and noise. The reference output will both source and sink up to 10mA and is almost totally immune to input voltage variations. Two voltages are available: 5V and 10V. The 10V version can be used as a shunt regulator (two-terminal zener) with the same precision characteristics as the three-terminal connection.

This series reference provides supply current and power dissipation advantages over shunt references that must idle the entire load current to operate. Additionally, the LT1460 does not require an output compensation capacitor, yet is stable with capacitive loads.