1 Features

Typical 5-V Supply, Unless Otherwise Noted

• Input Referred Voltage Noise 5.8 nV/√Hz
• Input Bias Current 100 fA
• Unity Gain Bandwidth 17 MHz
• Supply Current per Channel Enable Mode
  • LMV791 1.15 mA
  • LMV792 1.30 mA
• Supply Current per Channel in Shutdown Mode 0.02 µA
• Rail-to-Rail Output Swing
  • At 10-kΩ Load, 25 mV from Rail
  • At 2-kΩ Load, 45 mV from Rail
• Ensured 2.5-V and 5-V Performance
• Total Harmonic Distortion 0.01% at1 kHz, 600 Ω
• Temperature Range −40°C to 125°C

2 Applications

• Photodiode Amplifiers
• Active Filters and Buffers
• Low-Noise Signal Processing
• Medical Instrumentation
• Sensor Interface Applications

3 Description

The LMV791 (single) and the LMV792 (dual) low-noise, CMOS input operational amplifiers offer a low input voltage noise density of 5.8 nV/√Hz while consuming only 1.15 mA (LMV791) of quiescent current. The LMV791 and LMV792 are unity gain stable operational amplifiers and have gain bandwidth of 17 MHz. The LMV79x have a supply voltage range of 1.8 V to 5.5 V and can operate from a single supply. The LMV79x each feature a rail-to-rail output stage capable of driving a 600-Ω load and sourcing as much as 60 mA of current.

The LMV79x family provides optimal performance in low-voltage and low-noise systems. A CMOS input stage, with typical input bias currents in the range of a few femtoamperes, and an input common-mode voltage range which includes ground, make the LMV791 and the LMV792 ideal for low-power sensor applications. The LMV79x family has a built-in enable feature which can be used to optimize power dissipation in low power applications.

The LMV791x are manufactured using TI’s advanced VIP50 process and are offered in a 6-pin SOT and a 10-pin VSSOP package respectively.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Photodiode Transimpedance Amplifier

Low-Noise CMOS Input