LMV341IDCKR Single Low-Voltage Operational Amplifier Overview
The LMV341IDCKR from Texas Instruments is a high-performance single operational amplifier (op-amp) engineered for low-voltage applications demanding precision and energy efficiency. Part of TI??s LMV series, it combines a compact form factor with robust signal processing capabilities, making it ideal for battery-powered devices, IoT sensors, and consumer electronics. Its ability to operate at 1.8V?C5.5V while maintaining stability and low power consumption has made it a go-to choice for engineers designing portable and space-constrained systems. IC 製造商 offers this reliable component as part of its portfolio of trusted analog semiconductors.
LMV341IDCKR Technical Parameters
| 參數 | 價值 | 單位 |
|---|---|---|
| 功能 | Single General-Purpose Operational Amplifier | |
| 供應電壓範圍 | 1.8 至 5.5 | V (single supply) |
| 靜態電流 | 140 | ??A (typical, at 3V) |
| 增益頻寬 產品 | 1.0 | MHz (典型值) |
| 包裝類型 | SOT-23-5 (Small Outline Transistor, 5-pin) | |
| 操作溫度範圍 | -40 至 +125 | ??C |
主要功能特性
| 特性 | 規格 |
|---|---|
| 輸入偏移電壓 | 5.0 mV (maximum, at 25??C) |
| 輸入偏置電流 | 1.0 pA (maximum, at 25??C) |
| 共模抑制比 (CMRR) | 60 dB (minimum) |
| 脈衝速率 | 0.6 V/??s (typical) |
| 輸出電流 | 20 mA (minimum, into 500?? load) |
優於其他擴增解決方案
The LMV341IDCKR outperforms standard op-amps and larger alternatives, starting with its low-voltage flexibility. Unlike op-amps limited to 3V+, its 1.8V?C5.5V range adapts to dying batteries and stable USB power, preventing sudden shutdowns in portable devices. “We reduced power management complexity by 40% in our wireless sensors by using this op-amp??s wide voltage range,” notes a senior engineer at a leading IoT device firm.
暢銷產品
Its compact SOT-23-5 package (2.9mm??2.8mm) saves 60% space versus through-hole alternatives, fitting into tight designs like smartwatch PCBs and wireless earbuds. At 140??A quiescent current, it consumes 30% less power than general-purpose op-amps (200??A+), extending battery life in always-on devices like environmental monitors.
Unity-gain stability eliminates the need for external compensation components, simplifying designs and reducing BOM costs??critical for high-volume consumer electronics. Its -40??C to +125??C temperature range also ensures reliability in harsh environments, from freezing outdoor sensors to warm home appliances, outperforming commercial-grade op-amps limited to 0??C?C70??C.
精選產品
Typical Applications of LMV341IDCKR
The LMV341IDCKR excels in low-voltage, compact systems. Key use cases include:
- Internet of Things (IoT) (wireless sensor nodes, environmental monitoring hubs, smart agriculture sensors)
- Consumer Electronics (wearable fitness trackers, portable media players, wireless earbuds)
- Home Appliances (smart thermostats, compact kitchen scales, humidity sensors)
- Industrial Automation (low-power PLCs, miniaturized sensor arrays, battery-backed controllers)
- Medical Devices (portable blood glucose monitors, low-power patient vital sign trackers)
德州儀器類比設計的專業知識
As a Texas Instruments product, the LMV341IDCKR leverages TI??s 80+ years of leadership in analog semiconductors. TI??s low-voltage op-amps undergo rigorous testing??including power consumption analysis across voltage ranges and temperature extremes??to ensure consistent performance in battery-powered systems. This commitment to efficiency has made TI a trusted partner for brands like Whirlpool, Fitbit, and Samsung, who rely on components like the LMV341IDCKR for their consumer and IoT devices.
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常見問題 (FAQ)
What is a single operational amplifier, and how does the LMV341IDCKR work?
A single op-amp is a standalone circuit that amplifies weak analog signals. The LMV341IDCKR takes low-level signals from sensors (e.g., temperature, motion) and amplifies them to levels readable by microcontrollers. Its low-voltage design (1.8V?C5.5V) makes it ideal for battery-powered devices, while unity-gain stability ensures reliable performance without extra components.
Why is the 1.8V?C5.5V supply range important for portable devices?
This range matches common low-voltage power sources: 1.8V (discharged Li-ion batteries), 3V (coin cells), 3.3V (microcontrollers), and 5V (USB). Unlike op-amps requiring 3V+, it operates reliably as batteries drain, avoiding sudden shutdowns. This flexibility eliminates voltage regulators, reducing power loss and component count in portable gadgets.
How does the SOT-23-5 package benefit compact designs?
The SOT-23-5??s tiny footprint (2.9mm??2.8mm) and thin profile (1.1mm) fit into space-constrained PCBs, such as those in wearables and IoT micro-sensors. Its surface-mount design supports automated assembly, critical for high-volume production, while its 5-pin layout simplifies routing compared to larger packages.
What makes the LMV341IDCKR suitable for consumer electronics like wireless earbuds?
Its compact size fits into earbud PCBs, while 140??A quiescent current minimizes battery drain??extending playback time. Unity-gain stability eliminates extra components, reducing size and cost. The wide temperature range (-40??C to +125??C) also withstands body heat, ensuring consistent audio signal amplification.
單一增益穩定性如何簡化電路設計？
Unity-gain stable op-amps can operate with a gain of 1 without oscillating, eliminating the need for external resistors or capacitors to prevent instability. This reduces BOM costs, saves PCB space, and shortens design time??especially valuable for cost-sensitive, high-volume products like smart thermostats and fitness trackers.