My Inquiry
My Account
STMicroelectronics LMV321LICT
__5.jpg)
- Part No.:
- LMV321LICT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV321LICT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:16,027
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMV321LICT from STMicroelectronics is a single, rail-to-rail output, low-power operational amplifier optimized for 2.7 V to 5.5 V supply operation. It delivers 1.3 MHz gain bandwidth, 250 µA max supply current at 5 V, 7 mV max input offset voltage at 25 °C, and operates across –40 °C to +125 °C - enabling precision signal conditioning in space-constrained battery-powered medical sensors.
For engineers reviewing the LMV321LICT datasheet, LMV321LICT pinout, LMV321LICT application, or LMV321LICT equivalent, key selection criteria include its SC70-5 package footprint, rail-to-rail output swing (≤180 mV from rails), low 250 µA quiescent current, industrial temperature rating, and compatibility with 2.7 V single-supply systems requiring stable DC accuracy and moderate bandwidth.
Technical Context
The LMV321LICT uses a CMOS input stage enabling rail-to-rail input common-mode range down to VCC– – 0.2 V and output swing within 180 mV of both supply rails under 10 kΩ load. Its 1.3 MHz GBP and 0.7 V/µs slew rate support unity-gain-stable active filtering and sensor buffering without phase reversal.
It features 75 dB typical CMRR and 79 dB SVRR at 5 V, ensuring robust rejection of supply and common-mode noise in noisy embedded environments. Input offset drift is specified at 5 µV/°C over –40 °C to +125 °C, supporting consistent DC performance in thermally varying applications like portable diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct interface with Li-ion, coin-cell, and 3.3 V logic systems without level-shifting. |
| Quiescent Current | 250 µA max at 5 V - supports >1-year battery life in always-on wearable sensors drawing <10 µA average system current. |
| Gain Bandwidth Product | 1.3 MHz - sufficient for anti-aliasing filters up to ~100 kHz and ECG front-end amplification with <0.1% gain error. |
| Input Offset Voltage | 7 mV max at 25 °C - sets worst-case DC error floor for 12-bit ADC interfacing with ±20 mV full-scale input ranges. |
| Rail-to-Rail Output | Swings to within 180 mV of VCC+ and VCC– - maximizes dynamic range when driving SAR ADCs or low-voltage comparators. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive cabin sensors and industrial handheld test equipment. |
| Input Common-Mode Range | VCC– – 0.2 V to VCC+ – 1 V - allows ground-referenced single-ended sensor inputs (e.g., thermistor bridges) without external biasing. |
Pinout & Package
LMV321LICT is housed in a 5-pin SC70-5 (SOT323-5) package - 2.0 mm × 1.25 mm footprint, 0.65 mm pitch - optimized for high-density portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | Accepts differential or single-ended signals referenced to ground; supports rail-to-rail common-mode range down to VCC– – 0.2 V. |
| 2 (IN–) | Inverting input | Used for feedback configuration (e.g., inverting amplifier, transimpedance); matched input bias current minimizes offset error. |
| 3 (OUT) | Amplifier output | Delivers rail-to-rail swing (≤180 mV from rails) into ≥10 kΩ loads; stable with 200 pF capacitive loads per datasheet. |
| 4 (VCC–) | Negative supply / ground | Typically connected to PCB ground plane; must be decoupled with 10 nF capacitor placed ≤2 mm from pin. |
| 5 (VCC+) | Positive supply | Accepts 2.7–5.5 V; internal ESD protection rated to 4 kV HBM ensures robustness during board handling and system integration. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 250 µA max ICC at 5 V - reduces thermal load and extends battery runtime in continuous-monitoring devices. |
| Rail-to-rail output stage | Output swing within 180 mV of both supply rails - preserves >90% of available voltage headroom for downstream ADCs or comparators. |
| Industrial temperature grade | –40 °C to +125 °C operating range - eliminates derating concerns in automotive cabin modules and industrial edge controllers. |
| Low input offset voltage | 7 mV max at 25 °C - enables accurate amplification of microvolt-level sensor outputs (e.g., thermocouples, strain gauges) without trimming. |
| Stable with capacitive loads | Unity-gain stable with CL ≤ 200 pF - permits direct driving of long PCB traces or ADC input capacitance without external isolation resistors. |
Applications
| Portable ECG Monitor | Wireless Sensor Node |
|---|---|
Use Scenario: Amplifying low-amplitude, high-impedance biopotential signals from dry electrodes in a palm-sized cardiac monitor. IC Role / Device Role / Timing Role: Single-supply, non-inverting amplifier with gain = 100, configured as first-stage instrumentation buffer before 12-bit SAR ADC sampling at 1 kHz. Use Value: Rail-to-rail output ensures full utilization of 0–3.3 V ADC input range; 250 µA quiescent current enables >24-month battery life on CR2032. | Use Scenario: Conditioning analog outputs from MEMS accelerometers and temperature sensors in a BLE-enabled environmental sensor tag. IC Role / Device Role / Timing Role: Dual-function signal conditioner: DC-coupled gain stage for thermistor voltage and AC-coupled high-pass filter for vibration detection. Use Value: 1.3 MHz GBP supports 200 Hz high-pass corner with minimal phase distortion; SC70-5 footprint saves >1.5 mm² vs SO8, critical for sub-10 mm² PCB area budget. |
| Handheld Medical Glucometer | Industrial Flow Meter Signal Chain |
Use Scenario: Amplifying current-mode output from electrochemical glucose test strips under variable ambient temperature (–10 °C to +50 °C). IC Role / Device Role / Timing Role: Transimpedance amplifier converting pA-level strip current to measurable voltage, followed by low-pass filtering prior to ADC. Use Value: 5 µV/°C offset drift maintains <±2 mg/dL measurement accuracy across operating temperature; 75 dB CMRR rejects common-mode noise from shared battery supply. | Use Scenario: Buffering and level-shifting 4–20 mA loop receiver outputs for isolation and digitization in factory-floor flow transmitters. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating analog output stage from downstream optocoupler input impedance and PCB trace capacitance. Use Value: 2.7 V minimum supply allows direct use of 3.3 V isolated rail; 100 dB open-loop gain ensures <0.01% gain error over 4–20 mA span. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDCKR | Lower 150 µA ICC, but only 1 MHz GBP and 0.5 V/µs SR; no guaranteed 125 °C operation. | Better for ultra-low-power sleep-mode wake-up circuits; insufficient for 100 kHz active filtering. | Select if system prioritizes sub-200 µA current over bandwidth or extended temperature compliance. |
| TSV911ICT | Higher 3.3 MHz GBP and 1.5 V/µs SR, but 550 µA ICC and narrower 1.8–5.5 V supply range. | Suitable for higher-speed sensor interfaces (e.g., ultrasonic pulse amplification), less optimal for multi-year battery life. | Select if design requires >1 MHz closed-loop bandwidth and can tolerate 2× higher supply current. |
Compared with TLV9001IDCKR and TSV911ICT, LMV321LICT uniquely balances 1.3 MHz bandwidth, 250 µA consumption, and full –40 °C to +125 °C qualification - making it the preferred choice for cost-sensitive, thermally demanding, battery-operated instrumentation where DC accuracy and supply flexibility are critical.
Availability
LMV321LICT is available at Aetrix Electronics and suitable for portable medical devices, wireless sensor nodes, handheld test equipment, and industrial flow meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV321LICT 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, analog components, and MEMS sensors for automotive, industrial, and consumer markets.
The LMV321LICT belongs to ST's LMV3xxL low-power op-amp family, engineered specifically for cost-sensitive, space-constrained applications requiring rail-to-rail operation, extended temperature resilience, and single-supply compatibility from 2.7 V.
FAQ
What is the maximum capacitive load the LMV321LICT can drive without instability?
The LMV321LICT is unity-gain stable with capacitive loads up to 200 pF, as verified in the datasheet's Figure 9 (phase margin ≥60°) and Figure 10 (closed-loop response). Driving larger loads (e.g., >500 pF) requires an isolation resistor (≥100 Ω) between OUT and the load to maintain stability.
Does the LMV321LICT support true rail-to-rail input operation?
No - the LMV321LICT features rail-to-rail *output*, but its input common-mode range extends from VCC– – 0.2 V to VCC+ – 1 V. This allows ground-sensing capability (down to VCC–) but does not include the positive rail; inputs must remain at least 1 V below VCC+ for proper operation.
Can the LMV321LICT operate from a 2.7 V supply while maintaining full 1.3 MHz gain bandwidth?
Yes - the 1.3 MHz gain bandwidth product is guaranteed at both 2.7 V and 5 V supplies per Table 3 and Table 4 in the datasheet. Performance metrics including GBP, slew rate, and output swing are fully characterized and specified across the entire 2.7–5.5 V range.
Is the SC70-5 package of the LMV321LICT RoHS-compliant and halogen-free?
Yes - the LMV321LICT is offered in ECOPACK®2-compliant SC70-5 packaging, meeting RoHS Directive 2011/65/EU and being halogen-free per IEC 61249-2-21. Full material declarations and compliance documentation are available via ST's quality portal using order code LMV321LICT.
LMV321LICT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.7V/µs
- Gain Bandwidth Product:
- 1.3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 27 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 130µA
- Current - Output / Channel:
- 70 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:
- SC-70-5
LMV321LICT FAQ
1.How can I place an order for LMV321LICT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV321LICT 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 LMV321LICT reliable?
The price and inventory of LMV321LICT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV321LICT is usually 5 days.
3.What payment methods are accepted for LMV321LICT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV321LICT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV321LICT?
LMV321LICT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV321LICT 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 LMV321LICT?
For technical support, including LMV321LICT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV321LICT requirements.
6.How does Aetrix verify that LMV321LICT is sourced from the original manufacturer or authorized distributors?
All LMV321LICT 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 LMV321LICT meets industry standards.
7.What is the process for return or replacement of LMV321LICT?
All LMV321LICT units undergo pre-shipment inspection (PSI). If there is an issue with LMV321LICT, 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 LMV321LICT part is unused and in its original packaging.
Return procedure for LMV321LICT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV321LICT 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 and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
