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Texas Instruments LMV321M7X/NOPB
- Part No.:
- LMV321M7X/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV321M7X/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,084
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Product details
Overview
LMV321M7X/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, 1 V/µs slew rate, 130 µA supply current at 5 V, −0.2 V to 4.0 V input common-mode range, and rail-to-rail output swing within 10 mV of V+ and 65 mV of V− under 10 kΩ load - enabling precision signal conditioning in battery-powered portable devices.
For engineers reviewing the LMV321M7X/NOPB datasheet, LMV321M7X/NOPB pinout, LMV321M7X/NOPB application, or LMV321M7X/NOPB equivalent, key selection criteria include its SC70-5 package footprint (2.00 mm × 1.25 mm), guaranteed 2.7-V/5-V operation, absence of crossover distortion, industrial temperature range (−40°C to +125°C), and bipolar-input stage supporting high-output-current drive with low noise.
Technical Context
The LMV321M7X/NOPB employs a bipolar input and output stage fabricated on Texas Instruments' submicron BiCMOS process, delivering improved noise performance (39 nV/√Hz at 1 kHz) and higher output current drive versus CMOS alternatives. Its rail-to-rail output architecture enables full dynamic range utilization in single-supply systems down to 2.7 V.
It operates across −40°C to +125°C with no crossover distortion, ensuring clean small-signal fidelity in voltage followers and active filters. Input common-mode range extends to −0.2 V (below ground), allowing direct sensing near 0 V in single-supply configurations without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - supports full operation across depleted Li-ion (3.0 V) and regulated 3.3 V/5 V rails. |
| Gain-Bandwidth Product | 1 MHz - enables stable unity-gain buffer and 2nd-order active filter designs up to ~100 kHz. |
| Slew Rate | 1 V/µs - sufficient for 100-kHz sine waves at 1.5 Vpp without distortion. |
| Input Offset Voltage | 1.7 mV (max) - ensures ≤0.1% error in 1.7 V full-scale sensor interfaces. |
| Supply Current | 130 µA (typ) at 5 V - extends battery life in always-on wearable sensors and IoT endpoints. |
| Rail-to-Rail Output Swing | V+ −10 mV / V− +65 mV @ 10 kΩ - maximizes ADC input range in 3.3 V systems with 12-bit resolution. |
| Input Common-Mode Range | −0.2 V to V+ − 0.8 V - permits direct ground-referenced transducer interfacing without bias resistors. |
Pinout & Package
LMV321M7X/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 electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Noninverting Input (+IN) | High-impedance node accepting analog signals; requires matched trace length to Pin 3 for noise rejection. |
| 2 | Negative Supply (V−) | Ground reference for single-supply operation; must be low-impedance with local 0.1 µF decoupling. |
| 3 | Inverting Input (−IN) | Feedback node; sensitive to parasitic capacitance - keep traces short and away from noisy signals. |
| 4 | Output (OUT) | Capable of sourcing/sinking ±40 mA; avoid >200 pF capacitive load without isolation resistor. |
| 5 | Positive Supply (V+) | Accepts 2.7–5.5 V; requires dedicated 0.1 µF ceramic capacitor placed <1 mm from Pin 5 to GND. |
Key Features
| Feature | Design Value |
|---|---|
| No Crossover Distortion | Eliminates zero-crossing glitches in audio buffers and precision comparators, preserving waveform integrity. |
| Rail-to-Rail Output | Delivers >99% of supply rail voltage swing, maximizing dynamic range for 12-bit+ ADC drivers. |
| Ground-Sensing Input | Common-mode range includes −0.2 V, enabling direct connection to shunt resistors or thermocouples referenced to system ground. |
| Low Power Consumption | 130 µA supply current allows continuous operation in coin-cell-powered devices for >1 year. |
| Stable with Capacitive Loads | Unity-gain stable driving ≤200 pF directly - simplifies layout in sensor front-ends without external compensation. |
Applications
| Portable Medical Sensors | Industrial 4–20 mA Transmitters |
|---|---|
Use Scenario: Amplifying low-level signals from ECG electrodes or pulse oximeter photodiodes in battery-powered wearables. IC Role / Device Role / Timing Role: Single-supply instrumentation amplifier front-end with rail-to-rail output driving SAR ADC reference buffer. Use Value: 130 µA quiescent current extends runtime; −0.2 V input range enables direct electrode coupling without bias networks. |
Use Scenario: Conditioning voltage outputs from pressure/temperature sensors before current-loop conversion in field transmitters. IC Role / Device Role / Timing Role: Precision voltage follower and level-shifter interfacing between 3.3 V microcontroller and 24 V loop-powered circuitry. Use Value: 1.7 mV max offset minimizes calibration drift; 125°C rating supports operation in hot enclosures. |
| Smart Home Motion Detectors | Automotive Cabin Sensors |
Use Scenario: Amplifying weak PIR sensor outputs in battery-operated occupancy detectors with ultra-low standby power. IC Role / Device Role / Timing Role: DC-coupled gain stage feeding window comparator for motion event detection. Use Value: 2.7 V minimum supply allows operation during brownout; SC70-5 footprint saves space on compact PCBs. |
Use Scenario: Signal conditioning for cabin temperature/humidity sensors in automotive HVAC control modules. IC Role / Device Role / Timing Role: Low-noise buffer for analog sensor outputs routed to 12-bit ADC in body control units. Use Value: AEC-Q100 Grade 1 qualification (via LMV321-N-Q1 variant) ensures reliability; 39 nV/√Hz noise preserves SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar general-purpose op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Faster slew rate (2 V/µs), lower input bias current (1 pA), but higher supply current (60 µA typical at 3.3 V). | Better for high-speed sensor sampling; less suitable for ultra-low-power always-on monitoring. | Choose TLV9001IDBVR when bandwidth >1 MHz or femtoampere bias is required; LMV321M7X/NOPB remains optimal for cost-sensitive, low-quiescent-current designs. |
| LMV321IDBVR | Identical electrical specs and SC70-5 packaging; differs only in tape-and-reel packaging and RoHS compliance marking (NOPB vs. standard). | No functional difference; both meet same TI specification SNOS012K. | Select LMV321IDBVR for non-lead-free procurement; LMV321M7X/NOPB is lead-free compliant and preferred for new designs targeting RoHS/REACH. |
Compared with TLV9001IDBVR and LMV321IDBVR, LMV321M7X/NOPB provides the lowest cost-per-function for industrial and portable applications requiring proven 1-MHz performance at <150 µA, while maintaining full compatibility with legacy LM324-based designs.
Availability
LMV321M7X/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, industrial 4–20 mA transmitters, smart home motion detectors, and automotive cabin sensors requiring stable component supply across extended product lifecycles.
Supply support for LMV321M7X/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 over 90 years of innovation in precision amplifiers and power management ICs.
LMV321M7X/NOPB belongs to the LMV3xx-N family of general-purpose, low-voltage op amps designed specifically for cost-sensitive, space-constrained applications where rail-to-rail output, ground-sensing inputs, and guaranteed 2.7-V/5-V operation are essential.
FAQ
What is the maximum capacitive load LMV321M7X/NOPB can drive without external compensation?
The LMV321M7X/NOPB is unity-gain stable driving up to 200 pF directly, as verified in TI's SNOS012K datasheet Figure 7-23. Exceeding this value risks phase margin degradation and oscillation. For loads >200 pF, TI recommends adding a series isolation resistor (e.g., 620 Ω) between the LMV321M7X/NOPB output and the capacitive node to restore stability while preserving DC accuracy via feedback network design.
Does LMV321M7X/NOPB support true single-supply operation with input signals at ground potential?
Yes. LMV321M7X/NOPB features an input common-mode voltage range extending to −0.2 V (below ground) at 25°C, enabling direct interface with ground-referenced sources like shunt current monitors or thermocouples. However, input voltages must not fall below −0.3 V to avoid forward-biasing internal ESD diodes; external clamping may be required in noisy environments.
What is the thermal resistance (RθJA) of LMV321M7X/NOPB in its SC70-5 package?
The junction-to-ambient thermal resistance (RθJA) for LMV321M7X/NOPB in the SC70-5 (DCK) package is 478°C/W, per TI's SNOS012K datasheet Table 7.5. This value assumes standard JEDEC 2S2P test board conditions; actual board-level RθJA will improve with copper pour, thermal vias, and proper layout per TI's Layout Guidelines (Section 11).
Is LMV321M7X/NOPB qualified for automotive applications?
LMV321M7X/NOPB itself is the commercial-grade part (LMV321-N). For automotive use, TI offers the LMV321Q1M7X/NOPB (AEC-Q100 Grade 1, −40°C to +125°C), which shares identical electrical specs and SC70-5 packaging but undergoes additional stress testing and traceability controls. LMV321M7X/NOPB is not certified for automotive safety-critical systems.
How does the input offset voltage of LMV321M7X/NOPB vary over temperature?
LMV321M7X/NOPB has a typical input offset voltage drift of 5 µV/°C (TCVOS), with a maximum drift of 9 µV/°C over −40°C to +125°C, per Section 7.9 of SNOS012K. At 125°C, total offset may reach up to 16 mV (7 mV typ at 25°C + 9 µV/°C × 100°C), which must be accounted for in precision DC-coupled applications.
LMV321M7X/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- 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:
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV321M7X/NOPB FAQ
1.How can I place an order for LMV321M7X/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV321M7X/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 LMV321M7X/NOPB reliable?
The price and inventory of LMV321M7X/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV321M7X/NOPB is usually 5 days.
3.What payment methods are accepted for LMV321M7X/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV321M7X/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV321M7X/NOPB?
LMV321M7X/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV321M7X/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 LMV321M7X/NOPB?
For technical support, including LMV321M7X/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV321M7X/NOPB requirements.
6.How does Aetrix verify that LMV321M7X/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV321M7X/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 LMV321M7X/NOPB meets industry standards.
7.What is the process for return or replacement of LMV321M7X/NOPB?
All LMV321M7X/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV321M7X/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 LMV321M7X/NOPB part is unused and in its original packaging.
Return procedure for LMV321M7X/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV321M7X/NOPB Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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