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Texas Instruments LMV614MT/NOPB
- Part No.:
- LMV614MT/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMV614MT/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:388
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Product details
Overview
LMV614MT/NOPB from Texas Instruments is a quad, rail-to-rail input/output, low-power operational amplifier optimized for 1.8-V single-supply operation in space-constrained portable electronics. It delivers 1.4-MHz gain bandwidth, 100-µA per-channel quiescent current, and output swing within 30 mV of rails under 2-kΩ load - enabling precision signal conditioning in battery-powered audio pre-amplifiers and supply current monitoring circuits.
For engineers reviewing the LMV614MT/NOPB datasheet, LMV614MT/NOPB pinout, LMV614MT/NOPB application, or LMV614MT/NOPB equivalent, key selection criteria include guaranteed 1.8-V operation, −40°C to +125°C industrial-plus temperature range, rail-to-rail input common-mode voltage extending 200 mV beyond supplies, and 4-mV maximum input offset voltage across temperature.
Technical Context
The LMV614MT/NOPB integrates four independent amplifiers on a single die with fully independent input and output stages. Its CMOS input stage enables ultra-low input bias current (15 nA typical) and rail-to-rail input common-mode range (V− − 0.2 V to V+ + 0.2 V at 25°C), while the output stage supports true rail-to-rail swing with 30-mV headroom into 2-kΩ at 1.8 V.
Designed for low-voltage stability, it achieves 67° phase margin and 7-dB gain margin at unity gain with 100-pF capacitive load, and maintains 1.4-MHz GBW across 1.8–5.5-V supply range. Amplifier-to-amplifier isolation exceeds 123 dB, minimizing crosstalk in multi-channel sensing and signal routing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct connection to Li-ion single-cell or regulated 3.3-V/5-V rails without level shifting. |
| Gain Bandwidth Product | 1.4 MHz - enables stable unity-gain buffering and closed-loop gain ≥10 up to ~140 kHz. |
| Quiescent Current per Channel | 100 µA typical - allows four-channel operation at <400 µA total, critical for multi-sensor battery lifetime extension. |
| Input Offset Voltage | Max 4 mV (LMV611) / 5.5 mV (LMV612/LMV614) - ensures ≤0.5% error in 12-bit ADC front-end gain stages at room temperature. |
| Output Swing (2-kΩ load) | Within 30 mV of rails at 1.8 V - preserves dynamic range in low-voltage audio and sensor signal chains. |
| Input Common-Mode Range | V− − 0.2 V to V+ + 0.2 V at 25°C - accepts inputs below ground or above supply, simplifying single-supply transducer interfacing. |
| Operating Temperature | −40°C to +125°C - qualified for automotive cabin, industrial control, and extended-environment portable equipment. |
Pinout & Package
LMV614MT/NOPB is packaged in a 14-pin TSSOP (PW package), measuring 5.00 mm × 4.40 mm with 0.65-mm lead pitch. This thermally enhanced, surface-mount package supports high-density PCB layouts in handheld and wearable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | Output A/B/C/D | Amplifier outputs capable of sourcing/sinking ≥8 mA; rail-to-rail swing enables full utilization of ADC reference range. |
| 2, 6, 9, 13 | Inverting Input A/B/C/D | Differential input nodes with 15-nA bias current - minimizes error in high-impedance feedback networks (e.g., >1 MΩ). |
| 3, 5, 10, 12 | Noninverting Input A/B/C/D | High-impedance CMOS inputs supporting rail-to-rail common-mode range - eliminates need for input biasing resistors in single-supply configs. |
| 4 | V+ | Positive supply pin shared by all four amplifiers; decoupling capacitor required within 1 cm for stability at 1.4-MHz GBW. |
| 11 | V− | Negative supply (typically GND); low-impedance return path essential for noise immunity in multi-channel layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interface with 1.8-V ADCs and DACs without external level-shifting circuitry. |
| 100-µA per-channel quiescent current | Reduces total system power by >50% versus comparable 360-µA quad op-amps, extending battery life in portable medical sensors. |
| Guaranteed 1.8-V operation | Eliminates need for voltage boosters in coin-cell or single-LiFePO₄ powered designs - simplifies BOM and layout. |
| 200-mV beyond-rail input common-mode range | Supports direct connection of transducers with negative output swing (e.g., piezoelectric sensors) without clamping diodes. |
| 123-dB amplifier-to-amplifier isolation | Prevents signal coupling between channels in multi-axis IMU front-ends or stereo audio preamp stages. |
Applications
| Audio Pre-Amplification | Battery Monitoring |
|---|---|
|
Use Scenario: Amplifying weak microphone signals in Bluetooth headsets and voice-controlled wearables operating from 1.8-V LDOs. IC Role / Device Role / Timing Role: Quad channel provides dedicated gain stages for left/right mic inputs plus auxiliary sensors (e.g., ambient light, motion), eliminating cross-talk. Use Value: 30-mV rail-to-rail output swing maximizes SNR into 1.8-V SAR ADCs; 100-µA/channel current extends talk-time by >12 hours per charge cycle. |
Use Scenario: Precision voltage and current sensing in smart battery packs for laptops and power tools using single-cell Li-ion (2.5–4.2 V). IC Role / Device Role / Timing Role: Configured as differential amplifiers and current-sense buffers to condition shunt voltage and cell voltage signals before ADC sampling. Use Value: 4-mV max VOS ensures <0.2% SoC error over temperature; rail-to-rail input accommodates shunt voltage near ground or battery top rail. |
| Portable Medical Sensors | Supply Current Monitoring |
|
Use Scenario: Signal conditioning for ECG electrode interfaces and pulse oximetry photodiode amplifiers in FDA-cleared handheld diagnostics. IC Role / Device Role / Timing Role: One channel buffers reference voltage, two handle differential biopotential inputs, fourth drives analog switch multiplexer control logic. Use Value: −40°C to +125°C rating supports sterilization cycles and outdoor use; 15-nA input bias prevents electrode polarization errors in DC-coupled paths. |
Use Scenario: Real-time measurement of subsystem current draw in IoT edge gateways during firmware update and sleep/wake transitions. IC Role / Device Role / Timing Role: Used in high-side current sense configuration with external RSENSE to generate proportional voltage for microcontroller ADC monitoring. Use Value: Output swing within 30 mV of 1.8-V rail ensures full-scale resolution across 0–100 mA range; low drift (<5.5 µV/°C) maintains accuracy across ambient shifts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9054IDR | Higher 5-MHz GBW and 15-V/µs slew rate, but 230-µA per-channel IQ - 2.3× higher quiescent current than LMV614MT/NOPB. | Better suited for active filters or fast-settling data acquisition; less optimal for multi-day battery life requirements. | Select TLV9054IDR when bandwidth >2 MHz is mandatory and power budget allows ≥920 µA total for four channels. |
| LP324DR | Lower 100-kHz GBW and 0.1-V/µs slew rate, but 45-µA per-channel IQ - 45% lower quiescent current than LMV614MT/NOPB. | Targeted at slow-moving sensor signals (e.g., temperature, humidity); insufficient for audio or fast transient detection. | Choose LP324DR only for sub-10-kHz applications where ultra-low power dominates over signal fidelity and speed. |
Compared with TLV9054IDR and LP324DR, LMV614MT/NOPB uniquely balances 1.4-MHz bandwidth, rail-to-rail I/O, and 100-µA/channel IQ - making it the optimal choice for portable systems requiring both precision and multi-day runtime.
Availability
LMV614MT/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, battery monitoring systems, audio pre-amplifiers, and supply current monitoring applications requiring stable component supply across long production lifecycles.
Supply support for LMV614MT/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog design and manufacturing excellence.
The LMV61x family was engineered specifically for low-voltage, low-power general-purpose amplification in area-constrained portable electronics - emphasizing rail-to-rail performance at 1.8 V and extended temperature reliability.
FAQ
What supply voltage range does the LMV614MT/NOPB support?
The LMV614MT/NOPB operates from 1.8 V to 5.5 V, with full specifications guaranteed at 1.8 V, 2.7 V, and 5 V. This enables direct integration into single-cell Li-ion, coin-cell, and standard 3.3-V/5-V systems without external regulators or level shifters - a key advantage for compact portable designs where board space and power efficiency are critical.
Does the LMV614MT/NOPB support rail-to-rail input and output operation?
Yes, the LMV614MT/NOPB features true rail-to-rail input and output operation. Its input common-mode range extends 200 mV beyond both supply rails (V− − 0.2 V to V+ + 0.2 V at 25°C), and its output swings within 30 mV of each rail under 2-kΩ load at 1.8 V. This capability eliminates the need for external biasing or level-shifting components in single-supply configurations.
What is the quiescent current per channel for the LMV614MT/NOPB?
The LMV614MT/NOPB draws 100 µA per channel typical (185 µA maximum) at 1.8 V. With four independent amplifiers, total supply current remains under 400 µA in typical operation - significantly lower than many competing quad op-amps. This ultra-low IQ directly extends battery life in always-on portable and wearable applications.
What is the maximum input offset voltage specification for the LMV614MT/NOPB?
The LMV614MT/NOPB has a maximum input offset voltage of 5.5 mV across temperature (−40°C to +125°C). At room temperature, typical VOS is 1 mV. This precision enables accurate DC-coupled signal conditioning in battery voltage monitoring, current sensing, and medical sensor front-ends without requiring frequent calibration or trimming.
Which package options are available for the LMV614MT/NOPB?
The LMV614MT/NOPB is offered exclusively in the 14-pin TSSOP (PW) package, measuring 5.00 mm × 4.40 mm with 0.65-mm lead pitch. This compact, thermally efficient surface-mount package supports high-density PCB layouts and is compatible with standard reflow soldering processes used in high-volume consumer electronics manufacturing.
LMV614MT/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.42V/µs
- Gain Bandwidth Product:
- 1.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 14 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 116µA (x4 Channels)
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LMV614MT/NOPB FAQ
1.How can I place an order for LMV614MT/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV614MT/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LMV614MT/NOPB reliable?
The price and inventory of LMV614MT/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV614MT/NOPB is usually 5 days.
3.What payment methods are accepted for LMV614MT/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV614MT/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV614MT/NOPB?
LMV614MT/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV614MT/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LMV614MT/NOPB?
For technical support, including LMV614MT/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV614MT/NOPB requirements.
6.How does Aetrix verify that LMV614MT/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV614MT/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LMV614MT/NOPB meets industry standards.
7.What is the process for return or replacement of LMV614MT/NOPB?
All LMV614MT/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV614MT/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LMV614MT/NOPB part is unused and in its original packaging.
Return procedure for LMV614MT/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV614MT/NOPB Tags
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