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Texas Instruments LMV344IPWG4
- Part No.:
- LMV344IPWG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMV344IPWG4.pdf
- Description:
- IC CMOS 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,844
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Product details
Overview
LMV344IPWG4 from Texas Instruments is a quad rail-to-rail output CMOS operational amplifier with shutdown capability, designed for low-voltage (2.7V–5.5V) battery-powered systems. It delivers 1 MHz gain bandwidth, 1 V/μs slew rate, 0.25 mV typical input offset voltage, and ultra-low 1 pA typical input bias current - enabling precision signal conditioning in space-constrained portable instrumentation and sensor interfaces.
For engineers reviewing the LMV344IPWG4 datasheet, LMV344IPWG4 pinout, LMV344IPWG4 application, or LMV344IPWG4 equivalent, this page provides verified specifications, TSSOP-14 package terminal mapping, real-world use cases in battery monitoring and audio preamplification, and two validated alternative parts with documented functional and application-level differences.
Technical Context
The LMV344IPWG4 integrates four independent CMOS-input op-amps sharing a single shutdown (SHDN) control line, supporting simultaneous channel disable. Its PMOS input stage enables rail-to-rail common-mode input range down to ground and up to V+ – 1 V, while the CMOS output stage achieves rail-to-rail swing within 30 mV of supply rails at 10 kΩ load.
Shutdown mode reduces total supply current to 33 nA (typical at 5 V), with 5 μs turn-on time. The device operates across –40°C to +125°C and maintains 50 dB minimum CMRR over full temperature range, making it suitable for industrial-grade analog front-ends where thermal stability and low-power idle states are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - supports direct connection to Li-ion cell (3.0–4.2 V) or regulated 3.3 V/5 V rails without level-shifting. |
| Gain Bandwidth Product | 1 MHz (typical) - enables stable unity-gain buffer or gain-of-10 amplification up to 100 kHz with adequate phase margin. |
| Slew Rate | 1 V/μs (typical) - supports clean 100 kHz sine-wave output at 1 VPP without distortion in audio and sensor signal paths. |
| Input Offset Voltage | 0.25 mV (typical), 4.5 mV (max over temp) - ensures ≤0.5% error in 12-bit ADC reference buffering or current-sense amplification. |
| Input Bias Current | 1 pA (typical), 5 nA (max at 125°C) - preserves high-impedance sensor node accuracy (e.g., pH electrodes, photodiodes). |
| Shutdown Current | 33 nA (typical at 5 V) - allows multi-channel systems to reduce quiescent power by >99.9% during sleep cycles. |
| Output Swing | Within 30 mV of rails (at 10 kΩ, 25°C) - maximizes dynamic range in single-supply 3.3 V data acquisition systems. |
Pinout & Package
Packaged in a 14-pin TSSOP (PW), the LMV344IPWG4 measures 5.00 mm × 4.40 mm with 0.65 mm pitch, optimized for automated assembly and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | Output (OUT1–OUT4) | Amplifier outputs; each capable of sourcing/sinking ≥18 mA and driving 10 kΩ loads to rail. |
| 2, 6, 9, 13 | Inverting Input (IN−1–IN−4) | Differential inputs tied to internal transconductance stage; high-impedance (1 pA bias) for minimal loading. |
| 3, 5, 10, 12 | Noninverting Input (IN+1–IN+4) | High-Z CMOS inputs with common-mode range from GND to V+ – 1 V - supports ground-referenced sensors. |
| 4 | V+ | Positive supply rail; must be bypassed with 0.1 μF ceramic capacitor placed ≤2 mm from pin. |
| 11 | GND | Analog ground reference; requires low-impedance connection to system ground plane to minimize noise coupling. |
| Not present | SHDN | No dedicated shutdown pin on LMV344IPWG4 - shutdown function is not implemented in this quad variant (only LMV341 has SHDN). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale signal headroom in 3.3 V systems - eliminates need for dual supplies in portable audio or sensor buffers. |
| Ultra-low input bias current (1 pA typ) | Enables accurate measurement from high-impedance sources like piezoelectric sensors or electrochemical cells without signal loss. |
| Wide supply range (2.5–5.5 V) | Operates directly from single-cell Li-ion, coin cell, or standard logic rails - simplifies power architecture in wearables and IoT nodes. |
| Extended temperature range (–40°C to +125°C) | Validated for under-hood automotive modules, industrial PLC I/O, and outdoor environmental monitors without derating. |
| Low 100 μA/channel supply current | Supports always-on sensing in battery-operated devices with multi-day runtime - e.g., 4-channel gas detector running on CR2032. |
Applications
| Battery Monitoring | Audio Preamplification |
|---|---|
Use Scenario: Real-time voltage and current sampling in multi-cell Li-ion packs for state-of-charge estimation. IC Role / Device Role / Timing Role: Quad op-amp configured as differential current-sense amplifier, battery-cell voltage buffer, reference divider follower, and comparator hysteresis generator. Use Value: 0.25 mV offset ensures ≤0.1% error in 3.3 V full-scale cell voltage measurement; rail-to-rail output drives 12-bit SAR ADC directly. |
Use Scenario: Low-noise microphone preamplifier stage in Bluetooth headset with active noise cancellation. IC Role / Device Role / Timing Role: First-stage gain block with 20 nV/√Hz input voltage noise and 1 MHz bandwidth for voice-band (300 Hz–3.4 kHz) signal conditioning. Use Value: 1 pA input bias prevents DC drift in electret mic bias networks; 1 V/μs slew rate avoids clipping on 1 kHz tone peaks. |
| Portable Sensor Interface | Industrial Signal Conditioning |
Use Scenario: Analog front-end for handheld environmental sensor (CO₂, humidity, temperature) with microcontroller ADC input. IC Role / Device Role / Timing Role: Four-channel signal conditioner: thermistor voltage divider buffer, capacitive humidity sensor charge amplifier, RTD excitation filter, and reference voltage follower. Use Value: Single 3.3 V supply powers all four channels; 125°C rating supports operation inside sealed enclosures exposed to solar heating. |
Use Scenario: 4–20 mA loop transmitter interface in programmable logic controller (PLC) analog input module. IC Role / Device Role / Timing Role: Precision I/V conversion, isolation amplifier output buffer, cold-junction compensation, and diagnostic voltage monitor. Use Value: 50 dB min CMRR rejects common-mode noise from motor drives; 100 μA/channel current enables 16-channel design within 2 W thermal budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher 2.2 MHz GBW, 1.6 V/μs slew rate; no shutdown; 600 μA/channel supply current. | Better for higher-frequency filtering (e.g., anti-aliasing at 200 kHz); unsuitable for ultra-low-power sleep modes. | Select TLV2464IDR when bandwidth >1 MHz is required and system power budget allows ~6× higher quiescent current per channel. |
| LMV984MT/NOPB | Lower 1.4 V minimum supply, 150 μA/channel, 1.5 MHz GBW; no shutdown; –40°C to +125°C rated. | Enables operation from single alkaline cell (1.5 V); slightly higher noise (23 nV/√Hz) limits low-level sensor use. | Choose LMV984MT/NOPB for sub-2.5 V battery systems (e.g., remote controls) where 1.4 V operation is mandatory and noise tolerance is relaxed. |
Compared with LMV344IPWG4, TLV2464IDR trades 6× higher supply current for 2.2× greater bandwidth, while LMV984MT/NOPB sacrifices 20% bandwidth and adds 50% noise to achieve 1.4 V operation - making LMV344IPWG4 optimal for 2.7–5.5 V, low-noise, low-quiescent applications requiring proven thermal robustness.
Availability
LMV344IPWG4 is available at Aetrix Electronics and suitable for battery monitoring, portable sensor interface, audio preamplification, and industrial signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV344IPWG4 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 50 years of innovation in precision amplifiers and power-efficient signal chains.
The LMV34x family was engineered for ultra-low-power, rail-to-rail performance in space-constrained portable electronics - targeting battery-operated instrumentation, medical sensors, and industrial edge nodes where input bias current and supply voltage flexibility are critical.
FAQ
Does LMV344IPWG4 include a shutdown pin?
No, LMV344IPWG4 does not feature a shutdown pin. Unlike the single-channel LMV341, the quad LMV344 variants (including LMV344IPWG4) lack integrated shutdown functionality. Power control must be implemented externally via supply switching or enable circuitry. This is confirmed in the device functional modes section of the SLOS447J datasheet, which explicitly states shutdown capability applies only to LMV341.
What is the maximum operating temperature for LMV344IPWG4?
The LMV344IPWG4 is rated for continuous operation from –40°C to +125°C ambient temperature, as specified in Section 5.3 (Recommended Operating Conditions) of the TI datasheet SLOS447J. This extended industrial temperature range is validated across all electrical parameters and supports deployment in under-hood automotive, factory automation, and outdoor environmental monitoring applications.
Can LMV344IPWG4 drive a 600 Ω load?
LMV344IPWG4 is not characterized for direct 600 Ω driving per channel. Its output short-circuit current is specified as 18–24 mA (sourcing) and 15–24 mA (sinking) at 5 V, implying a practical minimum load of ~200 Ω for linear operation. For 600 Ω audio line-driving, external buffering or selection of a purpose-built line driver (e.g., THS3201) is recommended to maintain THD <0.02%.
Is LMV344IPWG4 RoHS compliant and lead-free?
Yes, LMV344IPWG4 is RoHS compliant and lead-free. Per Texas Instruments' official packaging information (SLOS447J, Section 12), the PW (TSSOP) package uses lead-free NiPdAu terminal finish and complies with JEDEC J-STD-020 moisture sensitivity level 3. The device meets EU RoHS Directive 2011/65/EU and TI's corporate environmental standards.
What is the input common-mode voltage range for LMV344IPWG4?
The input common-mode voltage range for LMV344IPWG4 extends from –0.2 V to (V+ – 0.2 V) at 25°C, with guaranteed operation from GND to (V+ – 1 V) across temperature. This is confirmed in Sections 5.5 and 5.6 of the datasheet, enabling direct interfacing with ground-referenced sensors and single-supply signal sources without level-shifting circuitry.
LMV344IPWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 107µA (x4 Channels)
- Current - Output / Channel:
- 113 mA
- Voltage - Supply Span (Min):
- 2.5 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
LMV344IPWG4 FAQ
1.How can I place an order for LMV344IPWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV344IPWG4 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 LMV344IPWG4 reliable?
The price and inventory of LMV344IPWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV344IPWG4 is usually 5 days.
3.What payment methods are accepted for LMV344IPWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV344IPWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV344IPWG4?
LMV344IPWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV344IPWG4 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 LMV344IPWG4?
For technical support, including LMV344IPWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV344IPWG4 requirements.
6.How does Aetrix verify that LMV344IPWG4 is sourced from the original manufacturer or authorized distributors?
All LMV344IPWG4 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 LMV344IPWG4 meets industry standards.
7.What is the process for return or replacement of LMV344IPWG4?
All LMV344IPWG4 units undergo pre-shipment inspection (PSI). If there is an issue with LMV344IPWG4, 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 LMV344IPWG4 part is unused and in its original packaging.
Return procedure for LMV344IPWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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