Overview
The LMV797MM, produced by Texas Instruments, is a high-performance, dual low-noise, CMOS input operational amplifier. This device is part of the LMV796/LMV797 family, known for its wide bandwidth, low supply current, and low input noise characteristics. The LMV797MM is particularly suited for applications requiring high signal fidelity and low power consumption, making it ideal for use in portable and low-voltage systems.
Key Specifications
| Parameter | Conditions | Typical | Units |
|---|---|---|---|
| Input Referred Voltage Noise | f = 1 kHz | 5.8 | nV/√Hz |
| Input Bias Current | VCM = 1.0V | 100 | fA |
| Unity Gain Bandwidth | AV = +1 | 17 | MHz |
| Supply Current per Channel | V+ = 2.5V | 1.30 | mA |
| Rail-to-Rail Output Swing | @ 10 kΩ Load | 25 mV from Rail | mV |
| Output Current | Sourcing to V+ | 60 | mA |
| Total Harmonic Distortion + Noise | f = 1 kHz, AV = 1, RLOAD = 600Ω | 0.01% | % |
| Temperature Range | −40°C to 125°C | °C |
Key Features
- Low Input Referred Noise: The LMV797MM features an input referred voltage noise density of 5.8 nV/√Hz, making it suitable for applications requiring high signal fidelity.
- Low Input Bias Current: With an input bias current of 100 fA, this device is ideal for low power sensor applications.
- Wide Bandwidth: The op amp has a unity gain bandwidth of 17 MHz, providing wideband amplification.
- Rail-to-Rail Output Swing: The device offers a rail-to-rail output stage capable of driving a 600Ω load and sourcing up to 60 mA of current.
- Low Supply Voltage Operation: The LMV797MM can operate from a single supply voltage ranging from 1.8V to 5.5V.
- Small Footprint: Available in an 8-pin VSSOP package, this device saves space on printed circuit boards.
- Automotive Grade: The LMV796Q variant is AEC-Q100 Grade 1 Qualified, making it suitable for automotive applications.
Applications
- Photodiode Amplifiers: Ideal for transimpedance amplifiers in photodiode applications.
- Active Filters and Buffers: Suitable for use in active filter and buffer circuits.
- Low Noise Signal Processing: Used in applications requiring low noise signal processing.
- Medical Instrumentation: Applicable in medical devices where low noise and high accuracy are crucial.
- Sensor Interface Applications: Ideal for interfacing with low-power sensors.
- Automotive: Suitable for various automotive applications due to its automotive grade qualification.
Q & A
- What is the input referred voltage noise density of the LMV797MM?
The input referred voltage noise density of the LMV797MM is 5.8 nV/√Hz at 1 kHz.
- What is the typical input bias current of the LMV797MM?
The typical input bias current is 100 fA.
- What is the unity gain bandwidth of the LMV797MM?
The unity gain bandwidth is 17 MHz.
- What is the supply current per channel for the LMV797MM at 2.5V supply voltage?
The supply current per channel is 1.30 mA.
- What is the output current capability of the LMV797MM?
The device can source up to 60 mA of current.
- What is the temperature range for the LMV797MM?
The temperature range is −40°C to 125°C.
- Is the LMV797MM suitable for automotive applications?
Yes, the LMV796Q variant is AEC-Q100 Grade 1 Qualified, making it suitable for automotive applications.
- What package types are available for the LMV797MM?
The LMV797MM is available in an 8-pin VSSOP package.
- Can the LMV797MM operate from a single supply voltage?
Yes, it can operate from a single supply voltage ranging from 1.8V to 5.5V.
- What are some common applications of the LMV797MM?
Common applications include photodiode amplifiers, active filters and buffers, low noise signal processing, medical instrumentation, sensor interface applications, and automotive systems.
