LMP7731MFX/NOPB

The LMP7731 is a single, low noise, rail-to-rail input and output, low voltage amplifier. It 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. It has bipolar 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 it an excellent choice for photometry applications. The LMP7731 provides a wide GBW of 22 MHz while consuming only 2 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 LMP7731 has a supply voltage range of 1.8V to 5.5V, making it an ideal choice for battery operated portable applications. The LMP7731 is offered in the space saving 5-Pin SOT-23 and 8-Pin SOIC packages.

Applications

• Gas Analysis Instruments
• Photometric Instrumentation
• Medical Instrumentation

Key features

• Input Voltage Noise (Typical Values, TA = 25°C, VS = 5V):
• 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 (ωf = 10 kHz, Av = +1, RL = 2 kΩ): 0.001%
• Supply Current per Channel: 2.2 mA
• Supply Voltage Range: 1.8V to 5.5V
• Operating Temperature Range: -40°C to 125°C
• Input Bias Current: ±1.5 nA
• RRIO