Single, 5.5-V, 6.2-kHz, ultra low quiescent current (350-nA), 1.6-V min supply, RRIO op amp
Product details
Parameters
Package | Pins | Size
Features
- For VS = 5 V, Typical Unless Otherwise Noted
- Supply Current at VCM = 0.3 V 400 nA (Max)
- Operating Voltage Range 1.6 V to 5.5 V
- Low TCVOS 3.5 µV/°C (Max)
- VOS 1 mV (Max)
- Input Bias Current 40 fA
- PSRR 109 dB
- CMRR 102 dB
- Open-Loop Gain 132 dB
- Gain Bandwidth Product 6.2 kHz
- Slew Rate 2.4 V/ms
- Input Voltage Noise at f = 100 Hz 255 nV/√Hz
- Temperature Range –40°C to 125°C
Description
The LPV521 is a single nanopower 552-nW amplifier designed for ultra long life battery applications. The operating voltage range of 1.6 V to 5.5 V coupled with typically 351 nA of supply current make it well suited for RFID readers and remote sensor nanopower applications. The device has input common mode voltage 0.1 V over the rails, guaranteed TCVOS and voltage swing to the rail output performance. The LPV521 has a carefully designed CMOS input stage that outperforms competitors with typically 40 fA IBIAS currents. This low input current significantly reduces IBIAS and IOS errors introduced in megohm resistance, high impedance photodiode, and charge sense situations. The LPV521 is a member of the PowerWise family and has an exceptional power-to-performance ratio.
The wide input common mode voltage range, guaranteed 1 mV VOS and 3.5 µV/°C TCVOS enables accurate and stable measurement for both high-side and low-side current sensing.
EMI protection was designed into the device to reduce sensitivity to unwanted RF signals from cell phones or other RFID readers.
The LPV521 is offered in the 5-pin SC70 package.
Technical documentation
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View all 9 | Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | LPV521 NanoPower, 1.8-V, RRIO, CMOS Input, Operational Amplifier datasheet (Rev. D) | Dec. 30, 2014 |
| Technical article | What is an op amp? | Jan. 21, 2020 | |
| Technical article | How to lay out a PCB for high-performance, low-side current-sensing designs | Feb. 06, 2018 | |
| Technical article | Low-side current sensing for high-performance cost-sensitive applications | Jan. 22, 2018 | |
| Application note | Simplifying Environmental Measurements in Power Conscious Factory and Building A (Rev. A) | Jan. 09, 2018 | |
| Application note | Advantages of using Nanopower Zero Drift Amp for Mobile Phone Battery Voltage Mo (Rev. A) | Dec. 21, 2017 | |
| Technical article | Voltage and current sensing in HEV/EV applications | Nov. 22, 2017 | |
| 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 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
551012922-001
Description
Texas Instrument offers this blank universal Evaluation Board to help you evaluate the performance of any low voltage, low power operational amplifier that is offered in the SC-70 package. Resistors, capacitors, or any other components can be easily mounted on this board. These components can be (...)
Features
- Universal for all low voltage, low power op amps.
- Dual sided layout for different pin-outs.
- Accommodates components of any of these sizes:
1206
0805
0603 - Quick and easy evaluation.
DIP-ADAPTER-EVM
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
The DIYAMP-EVM is a unique evaluation module (EVM) family that provides engineers and do it yourselfers (DIYers) with real-world amplifier circuits, enabling you to quickly evaluate design concepts and verify simulations. It is available in three industry-standard packages (SC70, SOT23, SOIC) and 12 (...)
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
SNOM024.ZIP (4 KB) - PSpice Model
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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
- (...)
TINA-TI — TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
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
- (...)
CIRCUIT060013 — This design inverts the input signal, VIN, and applies a signal gain of 1000 V/V or 60 dB. The inverting amplifier with T-feedback network can be used to obtain a high gain without a small value for R4 or very large values for the feedback resistors.
Features
- Dual +/- 5-V supply
- Input: +/- 2.5 mV
- Output: +/- 2.5 V
- Bandwidth: 5 kHz
- Gain: 1000 V/V
CIRCUIT060015 — This circuit combines an inverting and non-inverting amplifier to make a reference voltage adjustable from the negative of the input voltage up to the input voltage. Gain can be added to increase the maximum negative reference level.
Features
- Dual +/- 15-V supply
- Input: 10 V
- Output: 0 V to 10 V
Reference designs
TIDA-00759 — This reference design uses nano-power operational amplifiers, comparators and the SimpleLink™ ultra-low power 2.4-GHz wireless microcontroller (MCU) platform to demonstrate a low-power wireless motion detector implementation. These technologies lead to an extremely long battery life of (...)
Design files
-
download TIDA-00759 BOM .pdf (140KB) -
download TIDA-00759 Assembly Drawing .pdf (234KB) -
download TIDA-00759 PCB.pdf (1760KB) -
download TIDA-00759 Altium.zip (875KB) -
download TIDA-00759 Gerber.zip (607KB)
TIDA-01546 — This reference design showcases innovative solutions for battery and system health monitoring of battery-powered Smart Flow Meters. The battery monitoring subsystem provides highly accurate energy measurement and State of Health(SOH) projections which forecast battery lifetime. The system (...)
Design files
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SC70 (DCK) | 5 | View options |
Ordering & quality
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- Ongoing reliability monitoring
Support & training
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