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Texas Instruments LMV344IPWRQ1
- Part No.:
- LMV344IPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMV344IPWRQ1.pdf
- Description:
- IC CMOS 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,997
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Product details
Overview
LMV344IPWRQ1 from Texas Instruments is a quad-channel, rail-to-rail output CMOS operational amplifier qualified for automotive applications, operating from 2.7V to 5.5V supply, with 1MHz gain bandwidth, 1V/μs slew rate, and 100μA typical supply current per channel. It serves precision signal conditioning in engine control units, battery management systems, and sensor interfaces where low input bias current (1pA) and low offset voltage (0.25mV) are critical.
For engineers reviewing the LMV344IPWRQ1 datasheet, LMV344IPWRQ1 pinout, LMV344IPWRQ1 application, or LMV344IPWRQ1 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification (–40°C to 125°C), shutdown functionality with 5μs turn-on time, rail-to-rail output swing within 30mV of rails at 10kΩ load, and TSSOP-14 package compatibility with space-constrained automotive PCB layouts.
Technical Context
The LMV344IPWRQ1 implements a PMOS input stage enabling ultra-low input bias current (1pA typ) and wide common-mode input range (–0.2V to V+ – 0.2V). Its unity-gain stable architecture supports capacitive loads up to 1000pF while maintaining ≥70° phase margin across temperature and supply voltage (2.7V–5.5V).
Each of the four independent amplifiers features an active shutdown pin (SHDN) that reduces supply current to ≤1μA per channel, and operates with input-referred voltage noise of 39nV/√Hz at 1kHz and 20nV/√Hz at 10kHz - optimized for low-noise sensor front-ends and high-impedance source interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports single-supply operation in 3.3V and 5V automotive domains without level-shifting. |
| Gain Bandwidth Product | 1MHz - enables stable closed-loop gain configurations up to 100× at DC–10kHz for sensor amplification. |
| Slew Rate | 1V/μs - sufficient for 10kHz full-scale sine-wave output at ±2.5V swing without distortion. |
| Input Offset Voltage | 0.25mV typical - ensures ≤0.5% error in 50mV full-scale thermistor or strain gauge outputs. |
| Input Bias Current | 1pA typical - preserves signal integrity when driving from >100MΩ sources like piezoelectric sensors. |
| Output Swing (RL = 10kΩ) | Within 5mV of GND and 7mV of V+ - delivers true rail-to-rail dynamic range for ADC input buffering. |
| Shutdown Current | ≤1μA per channel - enables microamp-level power gating in always-on vehicle subsystems. |
Pinout & Package
TSSOP-14 package (PW), 5.0mm × 4.4mm × 1.2mm body, 0.65mm pitch, RoHS-compliant NIPDAU lead finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 12 | Inverting Input (IN−) | Four independent differential inputs; high-impedance PMOS node for precision feedback networks. |
| 2, 4, 6, 13 | Non-inverting Input (IN+) | Four independent high-Z inputs; common-mode range extends to –0.2V below GND and 0.8V below V+. |
| 7, 8, 9, 14 | Output (OUT) | Four rail-to-rail outputs capable of sourcing/sinking ≥70mA short-circuit current (5V supply). |
| 10 | V+ | Positive supply rail shared by all four op-amps; decoupling capacitor required within 1cm. |
| 11 | GND | Analog ground reference for all channels; must be connected to low-impedance system ground plane. |
| 11 (shared) | SHDN | Active-high shutdown control for all four amplifiers; logic high ≥3.1V (5V supply) enables operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from –40°C to +125°C ambient - suitable for under-hood ECUs and ADAS modules. |
| Rail-to-rail output swing | Delivers full dynamic range into 10kΩ loads: within 5mV of GND and 7mV of V+ at 25°C - maximizes ADC utilization. |
| Ultra-low input bias current | 1pA typical enables direct connection to high-impedance pH electrodes, photodiodes, and capacitive touch sensors without signal loss. |
| Integrated shutdown control | Single SHDN pin disables all four amplifiers simultaneously, reducing total quiescent current to <4μA - ideal for duty-cycled sensor nodes. |
| Low 1/f noise corner | Input voltage noise flat at 39nV/√Hz from 1kHz - minimizes drift in DC-coupled automotive signal chains. |
Applications
| Engine Coolant Temperature Sensing | 12V Battery State-of-Health Monitoring |
|---|---|
Use Scenario: Amplifying low-level resistance changes from NTC thermistors in coolant circuits, operating continuously at 125°C under hood. IC Role / Device Role / Timing Role: Precision non-inverting amplifier with 100× gain, referenced to stable 2.5V bandgap, driving 12-bit SAR ADC. Use Value: 0.25mV offset and 1pA bias current limit measurement error to <0.3°C over full temperature range. | Use Scenario: Conditioning voltage signals from shunt-based current sensing in 12V starter-battery monitoring systems. IC Role / Device Role / Timing Role: High-side current-sense amplifier with bidirectional capability, using matched resistor feedback network. Use Value: Rail-to-rail output swing ensures full 0–5V ADC range utilization across 0–15V battery voltage and –100A to +100A current range. |
| Occupant Detection System Signal Chain | Electric Power Steering Torque Sensor Interface |
Use Scenario: Amplifying microvolt-level outputs from capacitive seat occupancy sensors in safety-critical airbag control units. IC Role / Device Role / Timing Role: Low-noise instrumentation amplifier front-end (using two LMV344IPWRQ1 channels per sensor), followed by filtering and digitization. Use Value: 20nV/√Hz noise at 10kHz and 1MHz bandwidth preserve signal integrity for sub-100μV detection thresholds. | Use Scenario: Buffering Wheatstone bridge outputs from magnetostrictive torque sensors in EPS motor control modules. IC Role / Device Role / Timing Role: Differential-to-single-ended converter with programmable gain, operating from 3.3V supply with shutdown during vehicle sleep mode. Use Value: 5μs turn-on time ensures <100μs wake-up latency from sleep, meeting ISO 16750-2 transient response requirements. |
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 |
|---|---|---|---|
| TSV914IQDT | Higher 8MHz GBW but higher 800μA supply current per channel; no shutdown pin; only qualified to AEC-Q100 Grade 2 (–40°C to 105°C). | Not suitable for 125°C under-hood use; better for high-speed signal acquisition where power budget allows. | Select when bandwidth >1MHz is required and ambient temperature stays ≤105°C. |
| LMV934QDRQ1 | Lower 1.5MHz GBW; 220μA supply current; rail-to-rail input/output; same AEC-Q100 Grade 1 rating and TSSOP-14 package. | Compatible pinout and footprint; lacks shutdown function but offers wider input common-mode range (to V+). | Choose when shutdown is unnecessary and input signal may exceed V+ – 0.2V. |
Compared with TSV914IQDT and LMV934QDRQ1, the LMV344IPWRQ1 uniquely balances ultra-low power (100μA), automotive-grade thermal robustness (–40°C to 125°C), and integrated shutdown - making it optimal for always-on, space- and power-constrained automotive sensor nodes requiring precise DC accuracy.
Availability
LMV344IPWRQ1 is available at Aetrix Electronics and suitable for engine control units, battery management systems, and occupant detection systems requiring stable component supply across extended automotive temperature ranges and long production lifecycles.
Supply support for LMV344IPWRQ1 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 deep expertise in automotive-grade IC design and manufacturing.
The LMV344IPWRQ1 belongs to TI's automotive-qualified precision op-amp product line, engineered specifically for low-power, high-accuracy signal conditioning in harsh-temperature vehicle subsystems including powertrain, chassis, and safety electronics.
FAQ
What is the maximum operating junction temperature for LMV344IPWRQ1?
The LMV344IPWRQ1 has an absolute maximum virtual junction temperature (TJ) of 150°C, with recommended continuous operation up to 125°C ambient. Its TSSOP-14 package exhibits θJA = 113°C/W, allowing ~650mW max power dissipation at 25°C ambient before reaching thermal limits. Derating is required above 25°C ambient per JEDEC JESD51-7 standards.
Does LMV344IPWRQ1 support dual-supply operation?
Yes, LMV344IPWRQ1 supports dual-supply operation with V+ and GND pins configured as positive and negative rails respectively - e.g., ±2.5V. The input common-mode range extends to –0.2V below GND and 0.8V below V+, enabling true bipolar signal handling. Output swing remains rail-to-rail relative to the applied supplies.
How does the shutdown pin (SHDN) function on LMV344IPWRQ1?
The SHDN pin on LMV344IPWRQ1 is active-high and controls all four amplifiers simultaneously. At 5V supply, logic high ≥3.1V enables operation; logic low ≤0.2V places all channels in shutdown, reducing total supply current to ≤4μA. No external pull-up is required, and the pin tolerates voltages up to V+ + 0.3V.
What is the typical input offset voltage drift over temperature for LMV344IPWRQ1?
The LMV344IPWRQ1 exhibits an average temperature coefficient of input offset voltage (αVIO) of 1.7μV/°C (2.7V supply) and 1.9μV/°C (5V supply) across –40°C to +125°C. This results in ≤0.33mV total offset drift over the full automotive temperature range, ensuring stable DC accuracy in closed-loop sensor interfaces.
Can LMV344IPWRQ1 drive a 600Ω load at full output swing?
LMV344IPWRQ1 is not characterized for 600Ω loads in rail-to-rail output swing specifications. Its output swing data is specified for RL = 2kΩ and 10kΩ. Driving 600Ω will reduce swing margin (e.g., ≥95mV from rails at 25°C) and increase THD to 0.017% at 1kHz. For 600Ω applications, verify stability with ≥100pF compensation and consider output current limits (≥70mA short-circuit capability).
LMV344IPWRQ1 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:
- 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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LMV344IPWRQ1 FAQ
1.How can I place an order for LMV344IPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV344IPWRQ1 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 LMV344IPWRQ1 reliable?
The price and inventory of LMV344IPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV344IPWRQ1 is usually 5 days.
3.What payment methods are accepted for LMV344IPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV344IPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV344IPWRQ1?
LMV344IPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV344IPWRQ1 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 LMV344IPWRQ1?
For technical support, including LMV344IPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV344IPWRQ1 requirements.
6.How does Aetrix verify that LMV344IPWRQ1 is sourced from the original manufacturer or authorized distributors?
All LMV344IPWRQ1 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 LMV344IPWRQ1 meets industry standards.
7.What is the process for return or replacement of LMV344IPWRQ1?
All LMV344IPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMV344IPWRQ1, 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 LMV344IPWRQ1 part is unused and in its original packaging.
Return procedure for LMV344IPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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