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The LT 6230/LT6231/LT6232 are single/dual/quad lownoise, rail-to-rail output unity gain stable op amps thatfeature 1.1nV/Hz noise voltage and draw only 3.5mA ofsupply current per amplifier. These amplifiers combinevery low noise and supply current with a 215MHz gainbandwidth product, a 70V/µs slew rate and are optimizedfor low supply voltage signal conditioning systems. TheLT6230-10 is a single amplifier optimized for higher gainapplications resulting in higher gain bandwidth and slewrate. The LT6230 and LT6230-10 include an enable pinthat can be used to reduce the supply current to less than10µA.
The amplifier family has an output that swings within50mV of either supply rail to maximize the signal dynamicrange in low supply applications and is specified on 3.3V,5V and ±5V supplies. The en • ISUPPLY product of 1.9 peramplifier is among the most noise efficient of any op amp.
The LT6230/LT6230-10 is available in the 6-lead SOT-23package and the LT6231 dual is available in the 8-pin SOpackage with standard pinouts. For compact layouts, thedual is also available in a tiny dual fine pitch leadlesspackage (DFN). The LT6232 is available in the 16-pinSSOP package.
LT6232 Maximum Ratings
Total Supply Voltage (V+ to V) ............................. 12.6V Input Current (Note 2) ........................................ ±40mA Output Short-Circuit Duration (Note 3) ............. Indefinite Operating Temperature Range (Note 4) 40°C to 85°C Specified Temperature Range (Note 5) ..40°C to 85°C Junction Temperature............................................ 150°C Junction Temperature (DD Package) .................... 125°C Storage Temperature Range ................65°C to 150°C Storage Temperature Range (DD Package) ..................................... 65°C to 125°C Lead Temperature (Soldering, 10 sec) .................. 300°C
LT6232 Features
Low Noise Voltage: 1.1nV/Hz Low Supply Current: 3.5mA/Amp Max Low Offset Voltage: 350µV Max Gain Bandwidth Product:LT6230: 215MHz; AV 1LT6230-10: 1450MHz; AV 10 Wide Supply Range: 3V to 12.6V Output Swings Rail-to-Rail Common Mode Rejection Ratio 115dB Typ Output Current: 30mA Operating Temperature Range 40°C to 85°C LT6230 Shutdown to 10µA Maximum LT6230/LT6230-10 in SOT-23 Package Dual LT6231 in 8-Pin SO and Tiny DFN Packages LT6232 in 16-Pin SSOP Package
LT6232 Typical Application
Ultrasound Amplifiers Low Noise, Low Power Signal Processing Active Filters Driving A/D Converters Rail-to-Rail Buffer Amplifiers