Single 2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier
Product details
Parameters
Package | Pins | Size
Features
- 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 @ f = 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
(Typical Values, TA = 25°C, VS = 5V)
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Description
The LMP7731 is a single, low noise, rail-to-rail input and output, low voltage amplifier. The LMP7731 is part of the LMP precision 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 LMP7731 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 the LMP7731 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.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LMP7731 2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier datasheet (Rev. E) | Mar. 27, 2013 |
E-book | The Signal e-book: A compendium of blog posts on op amp design topics | Mar. 28, 2017 | |
User guide | 551012875, 551012922 Universal Op Amp Evaluation Boards (SOT-23 and SC-70) (Rev. C) | May 01, 2013 | |
Application note | AN-1873 DC Parameters (Rev. A) | May 01, 2013 | |
Application note | AN-1515 A Comprehensive Study of the Howland Current Pump (Rev. A) | Apr. 26, 2013 | |
Technical article | Get all your bits with the LM7705 | Mar. 28, 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The AFE2256EVM is a compact USB based evaluation kit for evaluating the AFE2256 COF, a 256-channel analog front-end. The EVM is self-contained with DACs and power generation on-board which greatly reduces its dependency on external equipment. The kit consists of an EVM and two separate COF adapters (...)
Features
- Allows quick evaluation of AFE2256 COF devices (externally detachable)
- GUI software allows easy control of AFE2256 device modes and functions
- On board 3.3V and 1.8V DUT power generation
- On board FPGA based pattern generation and data acquisition
- Communicates with Personal Computer through a USB 2.0 (...)
Description
Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.
The (...)
Features
- Simplifies prototyping of SMT IC’s
- Supports 6 common package types
- Low Cost
Description
Features
- 3 packages to choose from: SC70-5, SOT23-5 and SOIC-8
- 12 circuit configurations to choose from: Noninverting, Inverting, Active Filters, Difference Amp, Comparator and more!
- Dual and single supply configurations
- PCB designed for High performance: Optimized for each function
- Multiple interface options (...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Features
- Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Noise calculations
- Common unit translation
- Solves common amplifier circuit design problems
- Gain selections using standard resistors
- Filter configurations
- Total noise for common amplifier configurations
- (...)
- A noise generator tool - This is a Lab View 4-Run Time executable that generates Gaussian white noise, uniform white noise, 1/f noise, short noise, and 60Hz line noise. Temporal data (...)
Features
- Senses Temperature between 25°C - 50°C
- Output: 0.05V - 3.25V
- Single 3.3V Supply with half-supply reference
Features
- Senses Temperature between 25°C - 50°C
- Output: 0.05V - 3.25V
- Single 3.3V Supply with half-supply reference
Features
- Senses Temperature between 0°C - 50°C
- Output: 0.05V - 3.25V
- Single 3.3V Supply with half-supply reference
Features
- Single 5V Supply
- Passes frequencies between 0.7Hz - 10Hz
- AC Gain: 90dB
Features
- Single 36V supply
- Input: 50mA to 1A
- Output: 0.25V to 5V
Features
- Single 5V supply with half-supply reference
- Input: -2.22mV to 2.27mV differential
- Output: 225mV - 4.72V
- Strain gauge resistance variation: 115 - 125 Ohms
- Gain: 1001V/V
Features
- Single 5V supply with half-supply reference
- Input: -2.22mV to 2.27mV differential
- Output: 225mV - 4.72V
- Strain gauge resistance variation: 115 - 125 Ohms
- Gain: 1001V/V
Features
- 30V Split supply with ground reference
- Input: +/-25mV to +/-10V
- Output: 25mV to 10V
Features
- 5V Split supply
- Input: +/-0.2mVpp to +/-4Vpp
- Output: 0.1V to 2V
Features
- 5V Single supply with half-supply reference
- Input: -2V to 2V
- Output: 0V to 5V
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (D) | 8 | View options |
SOT-23 (DBV) | 5 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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