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運算放大器 (op amps)
一般用途運算放大器

LPV521

現行

單路、5.5V、6.2kHz、350nA 靜態電流、1.6V 供應 (最小值)、RRIO 運算放大器

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
此產品將繼續向現有客戶提供。新設計應考量替代產品。
功能相同，但引腳輸出與所比較的裝置不同
TLV8541 現行 單路、3.6-V、8-kHz、超低靜態電流 (550-nA)、RRIO 運算放大器 Higher GBW (0.008 MHz), faster slew rate (0.0035 V/us), higher output current (30 mA)

LPV521

現行
產品規格表 立即訂購

產品詳細資料

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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類型 標題 日期
* Data sheet LPV521 NanoPower, 1.8V, RRIO, CMOS Input, Operational Amplifier datasheet (Rev. E) PDF | HTML 2024年 7月 12日
Application brief Simplifying Environmental Measurements in Power Conscious Factory and Building A (Rev. A) 2018年 1月 9日
Application note Advantages of using Nanopower Zero Drift Amp for Mobile Phone Battery Voltage Mo (Rev. A) 2017年 12月 21日
E-book The Signal e-book: A compendium of blog posts on op amp design topics 2017年 3月 28日
EVM User's guide 551012875, 551012922 Universal Op Amp Evaluation Boards (SOT-23 and SC-70) (Rev. C) 2013年 5月 1日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

551012922-001 — SC-70 放大器通用評估板

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 (...)

使用指南: PDF
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開發板

DIP-ADAPTER-EVM — DIP 轉接器評估模組

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 (...)

使用指南: PDF
TI.com 無法提供
開發板

DIYAMP-EVM — 通用自製 (DIY) 放大器電路評估模組

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 (...)

使用指南: PDF | HTML
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模擬型號

LPV521 PSpice Model (Rev. A)

SNOM024A.ZIP (100 KB) - PSpice Model
下載
模擬型號

LPV521 TINA-TI Reference Design

SNOM784.TSC (18 KB) - TINA-TI Reference Design
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模擬型號

LPV521 TINA-TI Spice Model

SNOM785.ZIP (7 KB) - TINA-TI Spice Model
下載
計算工具

ANALOG-ENGINEER-CALC — 類比工程師計算機

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 (...)
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設計工具

CIRCUIT060013 — 具有 T 網路回饋電路的反相放大器

此設計可反轉輸入訊號 VIN，並使用 1000 V/V 或 60 dB 訊號增益。具有 T 回饋網路的反相放大器可在沒有較小 R4 值或超大回饋電阻器值的情況下獲得高增益。
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設計工具

CIRCUIT060015 — 可調式參考電壓電路

此電路結合反相及非反相放大器，讓參考電壓可從負輸入電壓向上調整至輸入電壓。可加入增益以提高最大負參考位準。
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設計工具

CIRCUIT060074 — 具有比較器電路的高壓側電流感測

此高壓側電流感測解決方案使用一個具有軌對軌輸入共模範圍的比較器，若負載電流上升到 1 A 以上，便在比較器輸出 (COMP OUT) 建立過電流警示 (OC 警示) 訊號。此實作中的 OC 訊號為低電位作動。因此當超過 1-A 閾值時，比較器輸出會變低。實作磁滯後會在負載電流降低至 0.5 A (減少 50%) 時，讓 OC-Alert 返回邏輯高狀態。此電路利用開漏輸出比較器，為控制數位邏輯輸入針腳而進行電平轉換輸出高邏輯電平。對於需要驅動 MOSFET 開關閘極的應用，建議使用具推挽輸出的比較器。
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

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 (...)
要求
模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

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 (...)
使用指南: PDF
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參考設計

TIDA-00759 — 支援 Bluetooth Smart 可實現 10 年鈕扣電池壽命的低功耗 PIR 動作偵測器參考設計

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
電路圖: PDF
參考設計

TIDA-01546 — 電池供電智慧流量計的電池和系統健全狀況監控參考設計

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
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
PDIP (P) 8 Ultra Librarian
SOT-SC70 (DCK) 5 Ultra Librarian
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