The LMP7732 is a dual low noise, low offset voltage, rail-to-rail input and output, low voltage precision amplifier. It offers low voltage noise of 2.9 nV/√Hz with a 1/f corner of only 3 Hz and low DC offset with a maximum value of ±40 µV, targeting high accuracy, low frequency applications. The LMP7732 has bipolar junction input stages with a bias current of only 1.5 nA, making it an excellent choice for photometry applications. It 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 for battery operated portable applications.
The LMP7732 dual amplifier offers ultra‑low voltage noise (2.9 nV/√Hz at 1 kHz) and a maximum offset of +40 pV, making it suitable for high‑accuracy photometry and other low‑frequency applications. It operates from 1.8 V to 5.5 V, draws only 4.4 mA, and provides a 22 MHz gain‑bandwidth product with 130 dB open‑loop gain.
The device is offered in 8‑Pin SOIC and MSOP packages, with detailed absolute‑maximum ratings, electrical characteristics, and typical performance graphs included for design reference.
| Input voltage noise (1 kHz) | 2.9 nV/√Hz |
|---|---|
| Maximum offset voltage | +40 pV |
| Input bias current | 1.5 nA |
| Supply voltage range | 1.8 V to 5.5 V |
| Gain‑bandwidth product | 22 MHz |
| Open‑loop gain | 130 dB |
| Supply current (typical) | 4.4 mA |
| Operating temperature range | -40 °C to 125 °C |
The LMP7732 operates from 1.8 V up to 5.5 V.
The amplifier has an input voltage noise of 2.9 nV/√Hz at 1 kHz.
It is offered in 8‑Pin SOIC and MSOP packages.
Typical supply current is about 4.4 mA.