Product category: Analogue and Mixed Signal ICs
News Release from: National Semiconductor | Subject: LMV422
Edited by the Electronicstalk Editorial Team on 14 October 2004
Dual-mode amp saves power in sensor
applications
The LMV422 is billed as the lowest supply current, dual power mode operational amplifier available on the market.
The LMV422 is billed as the lowest supply current, dual power mode operational amplifier available on the market National's LMV422 has a unique power-saving mode feature that allows customers to reduce power consumption while maintaining an active circuit
This article was originally published on Electronicstalk on 5 Jan 2001 at 8.00am (UK)
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"National's LMV422 is high-performance analogue in action", said Erroll Dietz, Vice President of National's Amplifier Product Group.
"National has developed leading-edge technology where it matters most to customers - in low-power embedded systems where active circuits can be easily set from a low-power mode to a high-power mode, conserving battery life while keeping the circuit active".
National's LMV422 is a dual, rail-to-rail operational amplifier.
With an external control pin, the LMV422 can be switched between a very low-power (2uA per channel) and low bandwidth (27kHz) mode to a full-power (400uA per channel) wide bandwidth (8MHz) mode.
These combinations reduce power consumption, maintain necessary charges on the coupling capacitors, and shorten the time needed to stabilise the signal after switching from low-power to high-power mode.
Additionally, the input bias of the LMV422 is very low at 5pA, with a supply voltage range of 2.7 to 5V, and a common mode rejection ratio (CMRR) of 85dB.
National's LMV422 is available now in 10-pin mini SOIC packaging and is priced at $1.20 in 1000-unit quantities.
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