LM4140BCM-2.0/NOPB

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LM4140BCM-2.0/NOPB is a Voltage Reference which belongs to PMIC family. It is a fully integrated low-dropout three-terminal voltage reference with a low 240μA operating current at nominal 2.00V output voltage. It is fully trimmed for drift in the temperature range of −55°C to +125°C and with complete protection against output overload. The low-dropout circuitry and design includes active turn-on and turn-off. This device has an improved temperature coefficient and a zero full-scale temperature drift that make it ideal for applications operating from full power without an active voltage control loop.

Principle of Operation

The LM4140BCM-2.0/NOPB consists of an internally compensated, low dropout voltage reference, which utilizes a current-steering principle to maintain a very low output noise gains and to ensure a low temperature coefficient. The output voltage from the device is set using a precision reference diode and an adjustable trimming resistor. This device has an ultra-low input-output voltage difference making it suitable for use in systems where the supply voltage is close to the output voltage.

Features of LM4140BCM-2.0/NOPB

• Low operating current of 240μA at nominal 2.00V output voltage
• External and on-chip trimming of output voltage
• Output voltage: 2.00V ±100 ppm
• Low input-output voltage differential
• Low noise and temperature coefficient
• Full thermal protection
• Wide temperature range: -55 °C to +125 °C
• High PSRR of 90 dB at 1kHz and 80 dB at 100kHz

Application of LM4140BCM-2.0/NOPB

The LM4140BCM-2.0/NOPB is ideal for a wide variety of applications requiring extremely low drift, low noise and low temperature coefficient. It can be used in portable battery-powered equipment, such as mobile phones, PDAs and personal digital assistants, where a low input output voltage differential is extremely important. Electronic test and measurement equipment, consumer appliances, automotive and industrial control systems, and many other safety critical systems are enabled with this device. Its low EMI design makes it suitable for many industrial applications with EMI sensitive designs and the wide temperature range makes it ideal for use in harsh ambient conditions.

Conclusion

The LM4140BCM-2.0/NOPB is a Voltage Reference which belongs to PMIC family and is an ideal solution for low voltage systems where an extremely low temperature coefficient and very low input-output voltage differential are important. It features low operating current, external and on-chip trimming of output voltage, low input-output voltage differential, low temperature coefficient and full thermal protection. It is a fully integrated low-dropout 3-terminal device and has various applications in battery powered equipment, electronic test and measurement equipment, consumer appliances, automotive and industrial control systems and safety critical systems.

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