LMP7732

LMP7732 www.ti.com SNOSAZ0E – AUGUST 2007 – REVISED MARCH 2013 2.9 nV/sqrt(Hz) Low Noise, RRIO Amplifier Check for Samples: LMP7732 FEATURES 1 23 (Typical Values, TA = 25°C, VS = 5V) Input Voltage Noise – f = 3 Hz 3.3 nV/√Hz – f = 1 kHz 2.9 nV/√Hz CMRR 130 dB Open Loop Gain 130 dB GBW 22 MHz Slew Rate 2.4 V/µs THD 0.001% @ f = 10 kHz, AV = 1, RL = 2 kΩ Supply Current 4.4 mA Supply Voltage Range 1.8V to 5.5V Operating Temperature Range −40°C to 125°C Input Bias Current ±1.5 nA RRIO APPLICATIONS Gas Analysis Instruments Photometric Instrumentation Medical Instrumentation DESCRIPTION The LMP7732 is a dual low noise, rail-to-rail input and output, low voltage amplifier. The LMP7732 is part of the LMP™ amplifier family and is ideal for precision and low noise applications with low voltage requirements. This operational amplifier offers low voltage noise of 2.9 nV/√Hz with a 1/f corner of only 3 Hz. The LMP7732 has bipolar junction input stages with a bias current of only 1.5 nA. This low input bias current, complemented by the very low level of voltage noise, makes the LMP7732 an excellent choice for photometry applications. The LMP7732 provides a wide GBW of 22 MHz while consuming only 4 mA of current. This high gain bandwidth along with the high open loop gain of 130 dB enables accurate signal conditioning in applications with high closed loop gain requirements. The LMP7732 has a supply voltage range of 1.8V to 5.5V, making it an ideal choice fo...