My Inquiry
My Account
Texas Instruments LMV344MTX/NOPB
- Part No.:
- LMV344MTX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMV344MTX/NOPB.pdf
- Description:
- IC CMOS 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,878
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMV344MTX/NOPB from Texas Instruments is a quad rail-to-rail output CMOS operational amplifier optimized for low-voltage portable applications. It operates from 2.7 V to 5.5 V, draws 100 µA per amplifier, delivers 1 MHz gain bandwidth and 1 V/µs slew rate, and features 20 fA input bias current - enabling precision signal conditioning in battery-powered systems such as portable medical sensors and handheld test equipment.
For engineers reviewing the LMV344MTX/NOPB datasheet, LMV344MTX/NOPB pinout, LMV344MTX/NOPB application, or LMV344MTX/NOPB equivalent, key selection criteria include its quad-channel configuration, TSSOP-14 package footprint, rail-to-rail output swing (within 30 mV of rails at 2 kΩ load), ultra-low input bias current, and guaranteed operation across –40°C to +125°C.
Technical Context
The LMV344MTX/NOPB implements a patented Class AB turnaround stage that reduces input-referred voltage noise (29 nV/√Hz at 10 kHz) and offset voltage drift (1.7 µV/°C typical) while maintaining 1 MHz GBW and 1 V/µs slew rate. Its PMOS input stage enables 20 fA input bias current and high input impedance, critical for high-impedance sensor interfaces.
It supports single-supply operation with rail-to-rail output swing (e.g., 24 mV from V– and 60 mV from V+ at 2.7 V, RL = 2 kΩ), common-mode input range extending to V– and up to 1.7 V below V+, and robust AC performance including 72° phase margin and 20 dB gain margin at 100 kΩ load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct integration into 3.3 V and Li-ion battery-powered systems without level shifting. |
| Gain Bandwidth Product | 1 MHz - supports stable unity-gain buffer and low-frequency filtering (e.g., anti-aliasing up to ~100 kHz). |
| Slew Rate | 1 V/µs - sufficient for 100 kHz full-scale sine wave output at 1 VPP without distortion. |
| Input Bias Current | 20 fA (typical) - minimizes voltage error in high-impedance transducer interfaces (e.g., pH electrodes, photodiode amps). |
| Input Offset Voltage | 0.55 mV (typical, 25°C) - ensures ≤0.5% gain error in 100× instrumentation amplifier front-ends. |
| Output Swing (2.7 V, RL = 2 kΩ) | Within 24 mV of V– and 60 mV of V+ - delivers >95% of supply rail utilization for maximum dynamic range. |
| Operating Temperature | –40°C to +125°C - qualified for industrial and automotive under-hood sensor signal conditioning. |
Pinout & Package
LMV344MTX/NOPB is packaged in a 14-pin TSSOP (PW package), body size 5.00 mm × 4.40 mm, with exposed pad for thermal enhancement. Pin numbering follows standard TI TSSOP top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Rail-to-rail output capable of sourcing/sinking ≥18 mA; tri-stated in shutdown mode (not applicable to LMV344-N). |
| 2 (IN A–) | Inverting input, Channel A | High-impedance PMOS node; accepts common-mode voltages from V– to 1.7 V below V+ at 2.7 V supply. |
| 3 (IN A+) | Noninverting input, Channel A | Matches IN A– in bias current and offset; used for differential sensing or unity-gain buffer configuration. |
| 4 (V+) | Positive supply | Primary power rail; must be decoupled with ≥100 nF ceramic capacitor near pin for stability. |
| 5 (IN B+) | Noninverting input, Channel B | Independent input for second amplifier channel; electrically isolated from Channel A except shared supply rails. |
| 6 (IN B–) | Inverting input, Channel B | Same electrical characteristics as IN A–; supports dual-channel instrumentation or dual-filter topologies. |
| 7 (OUT B) | Amplifier B output | Identical output drive capability to OUT A; no internal cross-coupling between channels. |
| 8 (OUT C) | Amplifier C output | Third independent output; enables 3-channel signal path (e.g., RGB sensor conditioning or multi-axis feedback). |
| 9 (IN C–) | Inverting input, Channel C | Supports simultaneous processing of three analog signals with matched DC specs across channels. |
| 10 (IN C+) | Noninverting input, Channel C | Enables consistent gain-setting across all three channels when used in identical configurations. |
| 11 (V–) | Negative supply | Ground reference for single-supply operation; must be connected to system GND with low-impedance path. |
| 12 (IN D+) | Noninverting input, Channel D | Fourth independent input; allows full quad-channel usage in compact PCB space. |
| 13 (IN D–) | Inverting input, Channel D | Completes quad-channel set; supports four parallel signal chains (e.g., quad-channel data acquisition). |
| 14 (OUT D) | Amplifier D output | Final output; enables true 4× amplification or buffering without external multiplexing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 24 mV of V– and 60 mV of V+ at 2.7 V/2 kΩ - maximizes usable output voltage range in low-voltage systems. |
| Ultra-low input bias current | 20 fA typical - eliminates significant error in high-Z sensor interfaces (e.g., piezoelectric accelerometers, ion-selective electrodes). |
| Low quiescent current | 100 µA per amplifier - extends battery life in always-on portable devices (e.g., wearable health monitors). |
| Wide temperature range | –40°C to +125°C operation - supports deployment in harsh environments like industrial motor control or automotive cabin modules. |
| Low input voltage noise | 29 nV/√Hz at 10 kHz - preserves SNR in precision DC-coupled amplification stages before ADC sampling. |
| Stable with capacitive loads | Phase margin ≥70° with CL ≤ 100 pF - tolerates PCB trace capacitance and sensor cable effects without oscillation. |
Applications
| Battery Monitoring Circuit | Portable Medical Sensor Interface |
|---|---|
Use Scenario: Real-time monitoring of individual cell voltage in 3S Li-ion battery packs for state-of-charge estimation. IC Role / Device Role / Timing Role: Quad op-amp configured as four independent precision buffers driving ADC inputs, rejecting common-mode noise from shared ground paths. Use Value: 0.55 mV input offset ensures <±0.5% measurement error across 0–4.2 V range; rail-to-rail output guarantees full ADC utilization without external level-shifting. |
Use Scenario: Signal conditioning for disposable ECG electrode arrays in handheld cardiac analyzers. IC Role / Device Role / Timing Role: Four-channel instrumentation front-end: two amps for differential lead I/II derivation, one for right-leg drive, one for respiration signal amplification. Use Value: 20 fA input bias current prevents electrode polarization errors; 100 µA/quiescent current enables >72-hour continuous operation on coin-cell battery. |
| Industrial Temperature Transmitter | Audio Line Driver for Portable Devices |
Use Scenario: 4–20 mA loop-powered transmitter using RTD or thermistor sensing in factory automation nodes. IC Role / Device Role / Timing Role: Quad op-amp implements excitation current source, bridge amplifier, cold-junction compensation, and loop driver - all on single IC. Use Value: –40°C to +125°C rating ensures accuracy over full industrial ambient range; 1.7 µV/°C offset drift limits calibration drift to <0.1°C over 100°C span. |
Use Scenario: Low-noise line-level output stage in Bluetooth headphones and USB-C DAC dongles. IC Role / Device Role / Timing Role: Dual-channel buffer (two amps) driving stereo headphone outputs; remaining two amps used for volume control and DC-blocking servo. Use Value: 29 nV/√Hz input noise preserves audio fidelity; rail-to-rail output delivers full 1.5 VPP swing into 32 Ω loads without clipping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher supply current (550 µA/ch), higher input offset (2.5 mV), but includes rail-to-rail input and output. | Preferred where input common-mode range extending to V+ is required (e.g., single-supply photodiode transimpedance). | Select TLV2464IDR only if rail-to-rail input is mandatory; LMV344MTX/NOPB offers 5.5× lower quiescent current and superior input bias performance. |
| OPA4340UA | Lower noise (8 nV/√Hz), higher GBW (5.5 MHz), but consumes 750 µA/ch and lacks extended temperature rating. | Suitable for high-fidelity audio or wideband sensor signal chains where speed and noise dominate over power. | Choose OPA4340UA for bandwidth-critical designs; LMV344MTX/NOPB remains optimal for battery-constrained, wide-temperature, low-input-bias applications. |
Compared with TLV2464IDR and OPA4340UA, LMV344MTX/NOPB uniquely balances ultra-low power (100 µA/ch), ultra-low input bias (20 fA), and industrial temperature range (–40°C to +125°C) - making it the only quad op-amp in this group qualified for long-life, high-impedance, harsh-environment deployments.
Availability
LMV344MTX/NOPB is available at Aetrix Electronics and suitable for battery monitoring, portable medical sensors, industrial temperature transmitters, and audio line drivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV344MTX/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 specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers and low-power signal chain solutions.
The LMV34x-N family was designed specifically for low-voltage portable electronics, emphasizing rail-to-rail output, ultra-low power, and ultra-low input bias current - targeting applications where battery life, sensor interface fidelity, and PCB area are critical constraints.
FAQ
What is the operating supply voltage range for LMV344MTX/NOPB?
The LMV344MTX/NOPB operates from 2.7 V to 5.5 V. This range supports direct connection to 3.3 V logic supplies and single-cell Li-ion batteries (nominal 3.6 V, max 4.2 V), eliminating need for voltage regulation in many portable designs. Operation below 2.7 V is not specified and may result in degraded AC performance or failure to meet rail-to-rail output specifications.
Does LMV344MTX/NOPB include a shutdown feature?
No, LMV344MTX/NOPB does not include a shutdown pin. The shutdown function is exclusive to the LMV341-N (single) variant. The LMV344MTX/NOPB is a quad amplifier with fixed-enable operation - all four channels remain active whenever V+ and V– are powered. Power savings must be achieved via system-level sleep control of the supply rails.
What is the maximum output current capability of LMV344MTX/NOPB?
LMV344MTX/NOPB can source up to 18 mA and sink up to 15 mA per channel (typical, 25°C). This is sufficient to drive 10 kΩ loads with full rail-to-rail swing or 600 Ω audio loads at line-level amplitudes. Output short-circuit current is limited internally to protect the device, but sustained operation near these limits requires careful thermal design due to power dissipation in the TSSOP package.
Is LMV344MTX/NOPB compatible with standard TSSOP-14 footprints?
Yes, LMV344MTX/NOPB uses the industry-standard PW (TSSOP-14) package with 0.65 mm pitch and 5.00 mm × 4.40 mm body dimensions. It is compatible with IPC-7351B compliant land patterns and standard reflow profiles for lead-free assembly. The exposed thermal pad is not electrically connected and may be left floating or grounded for improved thermal performance.
How does the input common-mode voltage range vary with supply voltage?
At 2.7 V supply, the input common-mode range extends from V– to 1.7 V below V+ (i.e., 0 V to 1.0 V). At 5 V supply, it extends to 4.0 V (V– to 4.0 V). This range is defined for CMRR ≥50 dB and is limited by the PMOS input stage architecture - it does not include rail-to-rail input capability. Applications requiring input signals near V+ should use external attenuation or select an RRI/O amplifier.
LMV344MTX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 0.02 pA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 107µA (x4 Channels)
- Current - Output / Channel:
- 113 mA
- Voltage - Supply Span (Min):
- 2.7 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
LMV344MTX/NOPB FAQ
1.How can I place an order for LMV344MTX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV344MTX/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 LMV344MTX/NOPB reliable?
The price and inventory of LMV344MTX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV344MTX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV344MTX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV344MTX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV344MTX/NOPB?
LMV344MTX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV344MTX/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 LMV344MTX/NOPB?
For technical support, including LMV344MTX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV344MTX/NOPB requirements.
6.How does Aetrix verify that LMV344MTX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV344MTX/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 LMV344MTX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV344MTX/NOPB?
All LMV344MTX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV344MTX/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 LMV344MTX/NOPB part is unused and in its original packaging.
Return procedure for LMV344MTX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV344MTX/NOPB Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
