Datasheet LT6230, LT6230-10, LT6231, LT6232 (Analog Devices)

LT6230/LT6230-10 LT6231/LT6232 215MHz, Rail-to-Rail Output, 1.1nV/√Hz, 3.5mA Op Amp Family
FeaTures DescripTion
n
Low Noise Voltage: 1.1nV/√Hz
The LT®6230/LT6231/LT6232 are single/dual/quad low n
Low Supply Current: 3.5mA/Amp Max
noise, rail-to-rail output unity-gain stable op amps that n
Low Offset Voltage: 350µV Max
feature 1.1nV/√Hz noise voltage and draw only 3.5mA of n Gain Bandwidth Product: supply current per amplifier. These amplifiers combine LT6230: 215MHz; AV ≥ 1 very low noise and supply current with a 215MHz gain- LT6230-10: 1450MHz; AV ≥ 10 bandwidth product, a 70V/µs slew rate and are optimized n Wide Supply Range: 3V to 12.6V for low supply voltage signal conditioning systems. The n Output Swings Rail-to-Rail LT6230-10 is a single amplifier optimized for higher gain n Common Mode Rejection Ratio: 115dB Typ applications resulting in higher gain bandwidth and slew n Output Current: 30mA rate. The LT6230 and LT6230-10 include an enable pin n Operating Temperature Range: –40°C to 85°C that can be used to reduce the supply current to less n LT6230 Shutdown to 10µA Maximum than 10µA. n LT6230/LT6230-10 in a Low Profile (1mm) The amplifier family has an output that swings within 50mV ThinSOT™ Package of either supply rail to maximize the signal dynamic range n Dual LT6231 in 8-Pin SO and Tiny DFN Packages in low supply applications and is specified on 3.3V, 5V and n LT6232 in a 16-Pin SSOP Package ±5V supplies. The en • √ISUPPLY product of 1.9 per amplifier is among the most noise efficient of any op amp.
applicaTions
The LT6230/LT6230-10 are available in the 6-lead SOT-23 n Ultrasound Amplifiers package and the LT6231 dual is available in the 8-pin SO n Low Noise, Low Power Signal Processing package with standard pinouts. For compact layouts, n Active Filters the dual is also available in a tiny dual fine pitch leadless n Driving A/D Converters package (DFN). The LT6232 is available in the 16-pin n Rail-to-Rail Buffer Amplifiers SSOP package. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion Noise Voltage and Unbalanced Low Noise Low Power Instrumentation Amplifier Noise Current vs Frequency
V + 6 6 S VS = ±2.5V UNBALANCED NOISE CURRENT (pA/√ R4 R6 TA = 25°C IN+ + 499Ω 499Ω 5 VCM = 0V 5 1/2 LT6231 ) Hz – V + R2 S 4 4 196Ω + 3 3 R1 LT6202 V NOISE CURRENT OUT 10Ω – 2 2 R3 NOISE VOLTAGE (nV/√ – 196Ω R5 – R7 V 1 1 499Ω S 499Ω NOISE VOLTAGE Hz ) 1/2 LT6231 623012 TA01a 0 0 IN– + AV = 40 IS = 10mA 10 100 1k 10k 100k BW = 5.1MHz EN = 5.8µV V – RMS INPUT REFERRED, FREQUENCY (Hz) S VS = ±1.5V to ±5V MEASUREMENT BW = 8MHz 623012 TA01b 623012fc 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Applications Information Typical Applications Package Description Revision History Typical Applications Related Parts