LPV521

ACTIVE

Single, 5.5V, 6.2kHz, 350nA quiescent current, 1.6V supply (min), RRIO operational amplifier

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Same functionality with different pin-out to the compared device
TLV8541 ACTIVE Single, 3.6-V, 8-kHz, ultra-low quiescent current (550-nA), RRIO operational amplifier Higher GBW (0.008 MHz), faster slew rate (0.0035 V/us), higher output current (30 mA)

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.6 Rail-to-rail In, Out GBW (typ) (MHz) 0.0062 Slew rate (typ) (V/µs) 0.0024 Vos (offset voltage at 25°C) (max) (mV) 1 Iq per channel (typ) (mA) 0.000351 Vn at 1 kHz (typ) (nV√Hz) 255 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (µV/°C) 0.4 Features EMI Hardened Input bias current (max) (pA) 1 CMRR (typ) (dB) 102 Iout (typ) (A) 0.022 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) 0.0004 Input common mode headroom (to positive supply) (typ) (V) 0.000351 Output swing headroom (to negative supply) (typ) (V) 0.003 Output swing headroom (to positive supply) (typ) (V) -0.003
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.6 Rail-to-rail In, Out GBW (typ) (MHz) 0.0062 Slew rate (typ) (V/µs) 0.0024 Vos (offset voltage at 25°C) (max) (mV) 1 Iq per channel (typ) (mA) 0.000351 Vn at 1 kHz (typ) (nV√Hz) 255 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (µV/°C) 0.4 Features EMI Hardened Input bias current (max) (pA) 1 CMRR (typ) (dB) 102 Iout (typ) (A) 0.022 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) 0.0004 Input common mode headroom (to positive supply) (typ) (V) 0.000351 Output swing headroom (to negative supply) (typ) (V) 0.003 Output swing headroom (to positive supply) (typ) (V) -0.003
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1
  • For VS = 5V, typical unless otherwise noted:
    • Supply current at VCM = 0.3V: 400nA (max)
    • Operating voltage range: 1.6V to 5.5V
    • Low TCVOS: 3.5µV/°C (max)
    • VOS: 1mV (max)
    • Input bias current: 40fA
    • PSRR: 109dB
    • CMRR: 102dB
    • Open-loop gain: 132dB
    • Gain bandwidth product: 6.2kHz
    • Slew rate: 2.4V/ms
    • Input voltage noise at f = 100Hz: 255nV/√Hz
    • Temperature range: −40°C to +125°C
  • For VS = 5V, typical unless otherwise noted:
    • Supply current at VCM = 0.3V: 400nA (max)
    • Operating voltage range: 1.6V to 5.5V
    • Low TCVOS: 3.5µV/°C (max)
    • VOS: 1mV (max)
    • Input bias current: 40fA
    • PSRR: 109dB
    • CMRR: 102dB
    • Open-loop gain: 132dB
    • Gain bandwidth product: 6.2kHz
    • Slew rate: 2.4V/ms
    • Input voltage noise at f = 100Hz: 255nV/√Hz
    • Temperature range: −40°C to +125°C

The LPV521 is a single, nanopower, 552nW amplifier designed for ultra-long-life battery applications. The operating voltage range of 1.6V to 5.5V coupled with typically 351nA of supply current make this device an excellent choice for RFID readers and remote-sensor nanopower applications. The device has an input common-mode voltage 0.1V over the rails, specified TCVOS, and voltage-swing-to-the-rail output performance. The LPV521 has a carefully designed CMOS input stage that outperforms competitors with typically 40fA IBIAS currents. This low input current significantly reduces IBIAS and IOS errors introduced in megohm resistance, high-impedance photodiode and charge sense applications. The LPV521 is a member of the PowerWise family, and has an exceptional power-to-performance ratio.

The wide input common-mode voltage range, specified 1mV VOS and 3.5µV/°C TCVOS enables accurate and stable measurement for both high-side and low-side current sensing.

EMI protection is designed into the device to reduce sensitivity to unwanted RF signals from cell phones or other RFID readers.

The LPV521 is offered in 5-pin SC70 and 8-pin PDIP packages.

The LPV521 is a single, nanopower, 552nW amplifier designed for ultra-long-life battery applications. The operating voltage range of 1.6V to 5.5V coupled with typically 351nA of supply current make this device an excellent choice for RFID readers and remote-sensor nanopower applications. The device has an input common-mode voltage 0.1V over the rails, specified TCVOS, and voltage-swing-to-the-rail output performance. The LPV521 has a carefully designed CMOS input stage that outperforms competitors with typically 40fA IBIAS currents. This low input current significantly reduces IBIAS and IOS errors introduced in megohm resistance, high-impedance photodiode and charge sense applications. The LPV521 is a member of the PowerWise family, and has an exceptional power-to-performance ratio.

The wide input common-mode voltage range, specified 1mV VOS and 3.5µV/°C TCVOS enables accurate and stable measurement for both high-side and low-side current sensing.

EMI protection is designed into the device to reduce sensitivity to unwanted RF signals from cell phones or other RFID readers.

The LPV521 is offered in 5-pin SC70 and 8-pin PDIP packages.

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Technical documentation

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Type Title Date
* Data sheet LPV521 NanoPower, 1.8V, RRIO, CMOS Input, Operational Amplifier datasheet (Rev. E) PDF | HTML 12 Jul 2024
Application brief Simplifying Environmental Measurements in Power Conscious Factory and Building A (Rev. A) 09 Jan 2018
Application note Advantages of using Nanopower Zero Drift Amp for Mobile Phone Battery Voltage Mo (Rev. A) 21 Dec 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
EVM User's guide 551012875, 551012922 Universal Op Amp Evaluation Boards (SOT-23 and SC-70) (Rev. C) 01 May 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

551012922-001 — SC-70 Amplifier Universal Evaluation Board

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Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP adapter evaluation module (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 (...)

User guide: PDF
Not available on TI.com
Evaluation board

DIYAMP-EVM — Universal do-it-yourself (DIY) amplifier circuit evaluation module

The DIYAMP-EVM is an 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, SOT-23 and SOIC) (...)

User guide: PDF | HTML
Simulation model

LPV521 PSpice Model (Rev. A)

SNOM024A.ZIP (100 KB) - PSpice Model
Simulation model

LPV521 TINA-TI Reference Design

SNOM784.TSC (18 KB) - TINA-TI Reference Design
Simulation model

LPV521 TINA-TI Spice Model

SNOM785.ZIP (7 KB) - TINA-TI Spice Model
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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 operational-amplifier (...)
Design tool

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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.
Design tool

CIRCUIT060015 — Adjustable reference voltage circuit

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.
Design tool

CIRCUIT060074 — High-side current sensing with comparator circuit

This high-side, current sensing solution uses one comparator with a rail-to-rail input common mode range to create an over-current alert (OC-Alert) signal at the comparator output (COMP OUT) if the load current rises above 1 A. The OC-Alert signal in this implementation is active low. So when the (...)
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
User guide: PDF
Reference designs

TIDA-00759 — Low-Power PIR Motion Detector With Bluetooth Smart & 10-Year Coin Cell Battery Life Reference Design

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 guide: PDF
Schematic: PDF
Reference designs

TIDA-01546 — Battery and System Health Monitoring of Battery Powered Smart Flow Meters Reference Design

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 guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
PDIP (P) 8 Ultra Librarian
SOT-SC70 (DCK) 5 Ultra Librarian

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