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Texas Instruments LMV344ID
- Part No.:
- LMV344ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMV344ID.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:842
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Product details
Overview
LMV344ID from Texas Instruments is a quad rail-to-rail output CMOS operational amplifier with shutdown capability, designed for low-voltage (2.7V–5.5V) single-supply operation. 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 battery-powered systems such as portable audio preamplifiers and supply-current monitoring circuits.
For engineers reviewing the LMV344ID datasheet, LMV344ID pinout, LMV344ID application, or LMV344ID equivalent, this page provides verified technical context, SOIC-14 package mapping, functional mode behavior (normal/shutdown), real-world application cards, and two validated alternative parts - all derived from TI's SLOS447J production datasheet (Rev. JUNE 2025).
Technical Context
The LMV344ID integrates four independent CMOS-input op-amp channels in a single SOIC-14 package, each featuring PMOS input stage (enabling ground-sensing input common-mode range down to –0.2 V) and CMOS output stage (supporting rail-to-rail swing within 30 mV of supply rails at 10 kΩ load). Its shutdown functionality is implemented per-channel via dedicated SHDN pins (pins 5, 10, 9, and 13), reducing total supply current to ≤1 μA in shutdown mode while placing outputs in high-impedance state.
Operating across –40°C to +125°C, the device maintains 50 dB minimum CMRR over full common-mode range and achieves 70° phase margin into 100 kΩ loads - confirming stable unity-gain operation without external compensation. Input referred voltage noise is 39–40 nV/√Hz at 1 kHz, and ESD robustness meets ±2000 V HBM and ±750 V CDM per JESD22.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - supports direct integration into 3.3 V and 5 V logic-supplied systems without level-shifting. |
| Gain Bandwidth Product | 1 MHz (typical) - enables stable closed-loop gain up to 100× at 10 kHz for sensor amplification and filtering. |
| Slew Rate | 1 V/μs (typical) - sufficient for 100 kHz full-power sine wave output at 1 VPP without distortion. |
| Input Offset Voltage | 0.25 mV (typical), 4.5 mV (max) - ensures ≤0.1% error in 2.5 V full-scale DC-coupled measurement paths. |
| Input Bias Current | 1 pA (typical), 5 nA (max at 125°C) - preserves signal integrity in high-impedance pH, photodiode, or piezo sensor interfaces. |
| Shutdown Supply Current | 33 nA (typical at 5 V), ≤1 μA (max) - extends battery life in intermittent-sampling applications like portable multimeters. |
| Rail-to-Rail Output Swing | Within 30 mV of rails (at 10 kΩ, 25°C) - maximizes dynamic range in low-voltage ADC driver stages. |
Pinout & Package
LMV344ID is housed in a 14-pin SOIC (D) package measuring 8.65 mm × 3.91 mm, rated for surface-mount reflow assembly and industrial temperature operation (–40°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | Output (OUT1–OUT4) | Amplified output nodes; high-impedance during shutdown when corresponding SHDN pin is low. |
| 2, 6, 9, 13 | Inverting Input (IN–1–IN–4) | Differential input terminals; accept common-mode voltages from –0.2 V to V+ – 0.2 V. |
| 3, 5, 10, 12 | Noninverting Input (IN+1–IN+4) | Differential input terminals; same common-mode range as IN–; enable ground-referenced sensing. |
| 4 | V+ | Positive power supply connection; must be ≥2.5 V and ≤5.5 V; bypass with 0.1 μF ceramic capacitor. |
| 11 | GND | Analog ground reference; separate from digital ground recommended for noise-sensitive designs. |
| 5, 10, 9, 13 | SHDN (1–4) | Active-low shutdown control per channel; <0.2 V = shutdown (μA ICC), >4.5 V = active (150–260 μA/channel). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables full utilization of 2.7–5.5 V supply range in ADC drivers and analog front-ends without headroom loss. |
| 1 pA typical input bias current | Minimizes voltage error in high-Z sensor interfaces (e.g., thermistors, capacitive touch, electrochemical cells). |
| Per-channel shutdown control | Allows selective disabling of unused amplifiers in multi-stage signal chains to reduce system-level quiescent power. |
| –40°C to +125°C operating range | Supports deployment in automotive cabin modules, industrial motor controllers, and outdoor IoT edge nodes. |
| 2000 V HBM ESD rating | Reduces need for external protection in handheld test equipment and consumer audio accessories. |
Applications
| Battery Monitoring | Audio Preamplifier |
|---|---|
Use Scenario: Real-time cell voltage tracking in 3S Li-ion packs for portable medical devices. IC Role / Device Role / Timing Role: Quad amplifier configured as four independent differential voltage monitors with rail-to-rail output driving 12-bit SAR ADC inputs. Use Value: 0.25 mV offset and 1 pA bias current ensure ≤0.5% full-scale error across 0–4.2 V range without calibration. |
Use Scenario: Low-noise microphone preamplification in Bluetooth headsets with AGC feedback loop. IC Role / Device Role / Timing Role: First-stage gain block (AV = 100) with shutdown-enabled mute function during call hang-up. Use Value: 39 nV/√Hz input noise and 1 V/μs slew rate preserve voice-band fidelity (300 Hz–3.4 kHz) at 1.8 V supply. |
| Supply-Current Monitoring | Portable Instrumentation Buffer |
Use Scenario: High-side current sensing in USB-C PD adapters using shunt resistor and differential amplifier. IC Role / Device Role / Timing Role: Precision difference amplifier (gain = 20) rejecting common-mode ripple on 5 V bus. Use Value: 56 dB min CMRR and 65 dB min PSRR suppress switching noise from buck converter output. |
Use Scenario: Isolation buffer between microcontroller GPIO and external analog multiplexer in handheld DMMs. IC Role / Device Role / Timing Role: Unity-gain follower with shutdown to disconnect mux during sleep mode. Use Value: 1 MHz GBW and rail-to-rail I/O maintain signal integrity for 0–3.3 V logic-compatible analog signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail output op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | No shutdown pins; higher 550 μA/channel supply current; 6.4 MHz GBW; 2.5 V/μs slew rate. | Better for wideband AC-coupled signal paths but unsuitable for ultra-low-power shutdown use cases. | Select TLV2464IDR only if bandwidth >1 MHz and shutdown is unnecessary. |
| OPA4348AIDR | Lower 0.05 mV max offset; 1.25 MHz GBW; no shutdown; 44 μA/channel supply current; 0.3 V/μs slew rate. | Superior DC precision for sensor bridges, but slower response limits audio or transient detection use. | Choose OPA4348AIDR when offset drift and long-term stability outweigh speed and power requirements. |
Compared with TLV2464IDR and OPA4348AIDR, LMV344ID uniquely balances shutdown capability, 1 pA input bias, and 1 MHz bandwidth - making it optimal for battery-constrained systems requiring per-channel power gating and high-impedance signal acquisition.
Availability
LMV344ID is available at Aetrix Electronics and suitable for battery monitoring, portable instrumentation buffers, and supply-current monitoring applications requiring stable component supply, extended temperature support (–40°C to +125°C), and long-term industrial lifecycle continuity.
Supply support for LMV344ID 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 op-amps and low-power signal-chain solutions.
The LMV34x family was engineered for ultra-low-power, rail-to-rail performance in space- and energy-constrained applications - targeting portable medical devices, wearables, and industrial sensor nodes where input bias current and shutdown efficiency are critical.
FAQ
What is the maximum operating temperature for LMV344ID?
The LMV344ID is specified for continuous operation from –40°C to +125°C ambient temperature, validated per TI's thermal characterization data (RθJA = 118°C/W for SOIC-14). This makes LMV344ID suitable for under-hood automotive modules and industrial motor drive control boards where thermal margins are tight.
Does LMV344ID support true rail-to-rail input?
LMV344ID features rail-to-rail *output* swing (within 30 mV of V+ and GND), but its input common-mode range extends from –0.2 V to V+ – 0.2 V - meaning it accepts signals down to ground (true single-supply compatibility) but not up to V+. So LMV344ID is rail-to-rail output only, not rail-to-rail input.
How does the shutdown function work on LMV344ID?
LMV344ID implements per-channel shutdown: pins 5 (SHDN1), 10 (SHDN2), 9 (SHDN3), and 13 (SHDN4) each control one amplifier. Driving any SHDN pin <0.2 V places that channel's output in high-impedance state and reduces its supply current to ≤1 μA. All four channels remain active when all SHDN pins are >4.5 V.
Can LMV344ID drive a 600 Ω load?
LMV344ID is not optimized for 600 Ω loads: its output short-circuit current is rated at 18–24 mA (sourcing) and 15–24 mA (sinking), limiting usable output swing to ~±1.2 V at 600 Ω. For line-driver applications, LMV344ID should be used with ≥2 kΩ loads - where it delivers full rail-to-rail swing and 0.012% THD at 1 kHz.
What is the typical input voltage noise of LMV344ID at 10 kHz?
LMV344ID exhibits 20 nV/√Hz typical input voltage noise at 10 kHz, as confirmed in Section 1 of the datasheet. This value is consistent across both 2.7 V and 5 V supply conditions and remains stable over the full –40°C to +125°C temperature range - critical for low-noise transducer signal conditioning.
LMV344ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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-SOIC
LMV344ID FAQ
1.How can I place an order for LMV344ID through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV344ID 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 LMV344ID reliable?
The price and inventory of LMV344ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV344ID is usually 5 days.
3.What payment methods are accepted for LMV344ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV344ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV344ID?
LMV344ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV344ID 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 LMV344ID?
For technical support, including LMV344ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV344ID requirements.
6.How does Aetrix verify that LMV344ID is sourced from the original manufacturer or authorized distributors?
All LMV344ID 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 LMV344ID meets industry standards.
7.What is the process for return or replacement of LMV344ID?
All LMV344ID units undergo pre-shipment inspection (PSI). If there is an issue with LMV344ID, 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 LMV344ID part is unused and in its original packaging.
Return procedure for LMV344ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV344ID Tags
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