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Texas Instruments LMV321Q3M5/NOPB
- Part No.:
- LMV321Q3M5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV321Q3M5/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:357
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Product details
Overview
LMV321Q3M5/NOPB from Texas Instruments is a single-channel, rail-to-rail output operational amplifier optimized for low-voltage (2.7 V to 5.5 V), space-constrained applications. It delivers 1 MHz gain-bandwidth product, 1 V/µs slew rate, and 130 µA supply current at 5 V, with input common-mode range extending to ground and output swing within 10 mV of V+ and 65 mV of V− under 10 kΩ load - enabling precision signal conditioning in battery-powered portable electronics.
For engineers reviewing the LMV321Q3M5/NOPB datasheet, LMV321Q3M5/NOPB pinout, LMV321Q3M5/NOPB application, or LMV321Q3M5/NOPB equivalent, key selection considerations include its AEC-Q100 Grade 3 qualification (−40°C to +85°C), SC70-5 package footprint (2.00 mm × 1.25 mm), rail-to-rail output capability, ground-sensing input, and crossover-distortion-free operation in low-noise, low-power analog front-ends.
Technical Context
The LMV321Q3M5/NOPB employs a bipolar input stage and BiCMOS process to achieve low input bias current (15 nA typ. at 5 V) and improved noise performance while maintaining high output drive capability (±40 mA short-circuit current). Its internal architecture eliminates crossover distortion and supports stable unity-gain operation with up to 200 pF capacitive load without external compensation.
Designed as a drop-in upgrade to legacy LM321, it operates across 2.7–5.5 V single supply or ±1.35–±2.75 V dual supply, with guaranteed DC performance over temperature and rail-to-rail output swing that maximizes dynamic range in low-voltage systems such as sensor interfaces and portable audio.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct operation from single-cell Li-ion or two-cell alkaline batteries without regulation. |
| Gain-Bandwidth Product | 1 MHz - supports stable amplification of signals up to ~100 kHz in closed-loop configurations with moderate gain. |
| Slew Rate | 1 V/µs - sufficient for audio-band and medium-speed sensor signal conditioning without distortion. |
| Input Offset Voltage | 1.7 mV (max) - ensures <10 mV error in unity-gain buffer applications with 0–5 V input range. |
| Supply Current | 130 µA (typ. at 5 V) - extends battery life in always-on monitoring circuits for >1-year operation on coin cells. |
| Rail-to-Rail Output Swing | V+ −10 mV / V− +65 mV @ 10 kΩ - preserves >98% of full-scale dynamic range at 3.3 V supply. |
| Input Common-Mode Range | −0.2 V to V+ − 0.8 V - allows direct sensing of signals referenced to ground in single-supply systems. |
Pinout & Package
LMV321Q3M5/NOPB is packaged in a 5-pin SC70 (DCK) case measuring 2.00 mm × 1.25 mm, optimized for high-density PCB layouts in portable devices. The compact footprint reduces board area by ~50% versus SOT-23-5 and enables placement adjacent to sensors or connectors to minimize noise pickup.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Amplified signal output; rail-to-rail capable, drives loads ≥10 kΩ directly. |
| 2 - GND (V−) | Negative Power Supply | Ground reference for single-supply operation; must be low-impedance return path. |
| 3 - IN− | Inverting Input | Differential input node; matched impedance required for bias current cancellation. |
| 4 - IN+ | Noninverting Input | Differential input node; accepts signals down to −0.2 V for ground-referenced sensing. |
| 5 - V+ | Positive Power Supply | Primary supply rail (2.7–5.5 V); bypass capacitor (0.1 µF) required near pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| No Crossover Distortion | Eliminates zero-crossing glitches in audio buffers and precision comparators, improving THD in signal chains. |
| AEC-Q100 Grade 3 Qualified | Validated for automotive infotainment and body electronics operating from −40°C to +85°C ambient. |
| Rail-to-Rail Output + Ground-Sensing Input | Enables full-scale signal acquisition in 3.3 V systems without level-shifting circuitry or dual supplies. |
| 200 pF Capacitive Load Tolerance | Drives ADC input capacitors or long traces directly without external isolation resistors or phase compensation. |
| Low 130 µA Quiescent Current | Reduces system power budget in always-on sensor nodes, supporting energy harvesting and ultra-low-power IoT designs. |
Applications
| Portable Medical Sensors | Automotive Cabin Monitoring |
|---|---|
Use Scenario: Amplifying low-level biopotential signals (ECG, pulse oximetry) from dry electrodes in wearable patches. IC Role / Device Role / Timing Role: Single-supply instrumentation amplifier front-end with ground-referenced input and rail-to-rail output driving 12-bit SAR ADC. Use Value: 130 µA supply current extends battery life beyond 6 months; rail-to-rail swing preserves SNR across full 0–3.3 V ADC range. |
Use Scenario: Signal conditioning for infrared cabin occupancy sensors and seat-belt buckle switches in entry-level vehicles. IC Role / Device Role / Timing Role: Low-cost, AEC-Q100 Grade 3-compliant comparator and buffer interfacing analog sensors to microcontroller GPIOs. Use Value: Guaranteed −40°C to +85°C operation and 2.7 V minimum supply support cold-cranking and stop-start battery profiles. |
| Smart Home Motion Detectors | Industrial Handheld Testers |
Use Scenario: Amplifying pyroelectric (PIR) sensor outputs in battery-powered motion detectors with wake-on-event logic. IC Role / Device Role / Timing Role: Ultra-low-power op-amp in active filter stage preceding nano-power comparator for motion-triggered wake-up. Use Value: 130 µA quiescent current enables multi-year operation on CR2032; SC70-5 footprint minimizes PCB area in compact enclosures. |
Use Scenario: Front-end signal conditioning for multimeter inputs measuring mV-level thermocouple or shunt-based current signals. IC Role / Device Role / Timing Role: Precision buffer isolating DMM input stage from multiplexer switching transients and ESD events. Use Value: Input common-mode range including ground allows direct connection to floating shunts; 1.7 mV max VOS limits measurement offset error to <0.1% FS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar general-purpose low-voltage op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321IDBVR | Same silicon, SC70-5 package, but commercial-grade (non-automotive); no AEC-Q100 qualification. | Not suitable for automotive or safety-critical industrial use; lower cost for consumer portables. | Select when AEC-Q100 Grade 3 is not required and cost sensitivity outweighs temperature range needs. |
| MCP6001T-E/OT | Microchip's 1 MHz rail-to-rail op-amp; higher input bias current (1 pA typ. vs 15 nA), wider VOS spread (3 mV max). | Better for high-impedance sensor interfaces; less optimal for precision DC-coupled buffering due to higher offset drift. | Prefer for ultra-low-power (<100 µA) or high-Z source applications; avoid where ground-sensing accuracy below 10 mV is critical. |
Compared with LMV321IDBVR, LMV321Q3M5/NOPB adds AEC-Q100 Grade 3 reliability and extended temperature validation; compared with MCP6001T-E/OT, it offers superior DC precision (lower VOS, tighter TCVOS) and proven capacitive load stability - making it optimal for cost-sensitive, ground-referenced analog front-ends requiring automotive-grade robustness.
Availability
LMV321Q3M5/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin monitoring, smart home motion detectors, and industrial handheld testers requiring stable component supply with automotive-grade reliability and low-voltage operation.
Supply support for LMV321Q3M5/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 automotive-qualified ICs.
LMV321Q3M5/NOPB belongs to TI's LMV3xx-N-Qx family of low-voltage, rail-to-rail op-amps designed specifically for cost-sensitive, space-constrained applications in automotive infotainment, portable instrumentation, and battery-powered industrial sensors.
FAQ
What is the operating temperature range for LMV321Q3M5/NOPB?
The LMV321Q3M5/NOPB is qualified per AEC-Q100 Grade 3, specifying reliable operation from −40°C to +85°C ambient temperature. This range covers passenger compartment environments in automotive applications and extended industrial settings where thermal margins are constrained. All electrical parameters in the datasheet are ensured across this full range, unlike commercial variants which may only guarantee performance up to +125°C junction but not ambient.
Does LMV321Q3M5/NOPB support true rail-to-rail input?
No, LMV321Q3M5/NOPB features rail-to-rail *output* swing but not rail-to-rail *input*. Its input common-mode voltage range extends from −0.2 V to V+ − 0.8 V, meaning it accepts signals down to 0.2 V below ground (enabling ground-sensing) but cannot handle inputs at the positive rail. For true rail-to-rail input capability, consider alternatives like TLV9001 or OPA316 - though those lack AEC-Q100 Grade 3 certification.
Can LMV321Q3M5/NOPB drive an ADC input capacitor directly?
Yes, LMV321Q3M5/NOPB is characterized to drive up to 200 pF capacitive load in unity-gain configuration without oscillation or excessive ringing. This makes it suitable for direct connection to typical SAR ADC input capacitors (e.g., 10–50 pF) and short PCB traces. For loads exceeding 200 pF, TI recommends adding a small isolation resistor (e.g., 10–100 Ω) between LMV321Q3M5/NOPB output and the ADC input to maintain phase margin.
What package type is used for LMV321Q3M5/NOPB?
LMV321Q3M5/NOPB uses the SC70-5 (DCK) package: a 5-pin, surface-mount outline measuring 2.00 mm × 1.25 mm with 0.65 mm pitch. This compact footprint is approximately half the area of the SOT-23-5 variant and enables high-density layout in space-constrained applications like wearables and automotive modules. Pinout matches industry-standard SC70 op-amp assignments.
How does LMV321Q3M5/NOPB differ from LMV321-N?
LMV321Q3M5/NOPB is the AEC-Q100 Grade 3 qualified version of the LMV321-N, sharing identical electrical specifications and SC70-5 packaging. The "Q3" suffix denotes automotive qualification with enhanced reliability testing (HTOL, ESD, temperature cycling) and controlled manufacturing flow. LMV321-N is commercial-grade, rated for −40°C to +125°C junction but not validated for automotive ambient conditions or long-term vehicle deployment.
LMV321Q3M5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 1.7 mV
- Current - Supply:
- 130µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMV321Q3M5/NOPB FAQ
1.How can I place an order for LMV321Q3M5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV321Q3M5/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 LMV321Q3M5/NOPB reliable?
The price and inventory of LMV321Q3M5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV321Q3M5/NOPB is usually 5 days.
3.What payment methods are accepted for LMV321Q3M5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV321Q3M5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV321Q3M5/NOPB?
LMV321Q3M5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV321Q3M5/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 LMV321Q3M5/NOPB?
For technical support, including LMV321Q3M5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV321Q3M5/NOPB requirements.
6.How does Aetrix verify that LMV321Q3M5/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV321Q3M5/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 LMV321Q3M5/NOPB meets industry standards.
7.What is the process for return or replacement of LMV321Q3M5/NOPB?
All LMV321Q3M5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV321Q3M5/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 LMV321Q3M5/NOPB part is unused and in its original packaging.
Return procedure for LMV321Q3M5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV321Q3M5/NOPB Tags
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