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Texas Instruments LMV321IDBVRG4
- Part No.:
- LMV321IDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV321IDBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,807
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Product details
Overview
LMV321IDBVRG4 from Texas Instruments is a single-channel, rail-to-rail output operational amplifier optimized for low-voltage (2.7 V to 5.5 V) operation, featuring 1 MHz unity-gain bandwidth, 1 V/μs slew rate, and 130 μA typical supply current. It delivers rail-to-rail output swing, ground-sensing input common-mode range, and operates across –40°C to +125°C - enabling use in battery-powered sensor signal conditioning and portable audio front-ends.
For engineers reviewing the LMV321IDBVRG4 datasheet, LMV321IDBVRG4 pinout, LMV321IDBVRG4 application, or LMV321IDBVRG4 equivalent, key selection criteria include its SOT-23-5 package footprint, low quiescent current at 2.7 V, absence of shutdown functionality (unlike LMV324S), and compatibility with single-supply systems requiring output swing within 60 mV of rails at 10 kΩ load.
Technical Context
The LMV321IDBVRG4 employs a CMOS input stage with bipolar output stage, enabling rail-to-rail output swing while maintaining input common-mode range extending to ground. Its internal compensation ensures stable unity-gain operation with capacitive loads up to 100 pF without external compensation.
It operates as a voltage-feedback amplifier with fixed internal gain-bandwidth product of 1 MHz and phase margin ≥60° across temperature and supply voltage (2.7 V–5.5 V), supporting precision DC-coupled amplification and low-distortion AC signal buffering in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 5.5 V - enables direct integration into Li-ion (3.0–4.2 V) and USB-powered (5 V) systems without LDO pre-regulation. |
| Unity-Gain Bandwidth | 1 MHz - supports stable amplification of audio-band signals (up to ~100 kHz) with ≤1% gain error at 100 kHz. |
| Slew Rate | 1 V/μs - limits full-scale output transitions to ≥1 μs, suitable for <100 kHz sine-wave generation and moderate-speed sensor interfaces. |
| Input Offset Voltage | 7 mV typ (25°C) - sets DC accuracy floor for non-inverting gain ≥10 configurations; requires trimming for sub-mV precision. |
| Output Swing (RL = 10 kΩ) | Within 60 mV of rails at 2.7 V - preserves dynamic range in low-voltage ADC driver applications where headroom is critical. |
| Supply Current | 130 μA typ at 2.7 V - allows continuous operation in always-on sensor nodes with multi-year battery life using CR2032 cells. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive cabin sensors and industrial motor control feedback paths. |
Pinout & Package
LMV321IDBVRG4 is packaged in a 5-pin SOT-23 (DBV) case measuring 2.90 mm × 1.60 mm × 1.15 mm, with gull-wing leads and exposed pad not connected internally. This ultra-compact surface-mount package supports high-density PCB layouts and thermal dissipation via soldered pad contact to copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; must be decoupled with 100 nF ceramic capacitor near VCC pin for stability. |
| 2 (IN–) | Inverting input | High-impedance node (250 nA max bias current); sensitive to layout-induced noise - route away from digital traces. |
| 3 (IN+) | Noninverting input | Accepts DC-coupled signals down to ground; common-mode range includes GND - enables single-supply transducer interfacing. |
| 4 (GND) | Negative supply reference | Primary return path for input bias currents and output load current; connect directly to solid ground plane. |
| 5 (VCC+) | Positive supply | Accepts 2.7–5.5 V; requires local 100 nF bypass capacitor between Pin 5 and Pin 4 to suppress supply noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables maximum signal utilization in low-voltage systems - e.g., drives 12-bit SAR ADCs with full-scale input range from 0 V to VCC. |
| Ground-sensing input common-mode range | Permits direct connection of resistive sensors (e.g., RTDs, thermistors) to IN+ without level-shifting circuitry. |
| 130 μA supply current at 2.7 V | Supports always-on operation in energy-harvesting nodes - e.g., 10 μA average system current achievable with duty-cycled measurement. |
| No internal shutdown function | Eliminates control logic overhead and pin count vs. LMV324S; simplifies design where continuous monitoring is required. |
| ESD protection >2000 V HBM | Reduces need for external TVS diodes in handheld device front-ends - withstands routine handling per JESD22-A114. |
Applications
| Portable Media Player Audio Buffer | Automotive Cabin Temperature Sensor Interface |
|---|---|
Use Scenario: Amplifying weak analog output from MEMS microphone before ADC sampling in a Bluetooth earbud. IC Role / Device Role / Timing Role: Single-supply non-inverting amplifier with gain = 10, providing low-noise signal conditioning and rail-to-rail drive capability into 10 kΩ ADC input. Use Value: 39 nV/√Hz input voltage noise and 130 μA supply current extend battery runtime while preserving SNR above 90 dB in 20 Hz–20 kHz band. | Use Scenario: Conditioning resistance-to-voltage conversion from NTC thermistor mounted on HVAC control board. IC Role / Device Role / Timing Role: Ground-referenced instrumentation amplifier front-end (with external resistors), converting 10 kΩ–100 kΩ thermistor resistance into 0.2–2.5 V linear output. Use Value: Input common-mode range including GND eliminates need for negative supply or level shifters, reducing BOM cost by $0.12 per unit. |
| Industrial Motor Control Current Sense | Smart Thermostat Battery Monitoring |
Use Scenario: Amplifying mV-level shunt voltage drop across 10 mΩ sense resistor in 24 V BLDC inverter gate driver. IC Role / Device Role / Timing Role: High-side current sense amplifier (configured as difference amplifier with matched external resistors), rejecting common-mode voltage up to 24 V. Use Value: 63 dB CMRR at 2.7 V supply ensures ±1% current measurement accuracy despite 24 V common-mode offset and PWM switching noise. | Use Scenario: Monitoring voltage of two-series alkaline cells (1.8–3.2 V) in wireless thermostat, scaling to 0–3.3 V for MCU ADC. IC Role / Device Role / Timing Role: Precision voltage divider buffer with gain = 0.5, driving 10 kΩ ADC input while isolating battery from loading effects. Use Value: 7 mV input offset voltage contributes <±0.3% full-scale error in 0–3.3 V range - sufficient for ±0.5°C temperature compensation accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Lower input offset (0.75 mV typ), higher GBW (1 MHz same), but higher supply current (60 μA at 1.8 V, 125 μA at 5 V). | Preferred for precision DC-coupled sensor interfaces where offset dominates error budget; less optimal for ultra-low-power wake-up circuits. | Select TLV9001IDBVR when offset voltage <2 mV is mandatory and supply voltage ≥3.3 V is available. |
| LMV321M5X | Same core specs and pinout; differs only in tape-and-reel packaging (M5X = 3000-unit reel vs. DBVRG4 = 3000-unit reel with G4 suffix indicating green/RoHS compliance). | No functional difference - identical electrical performance, thermal behavior, and reliability qualification. | LMV321M5X is a packaging variant, not a functional alternative; LMV321IDBVRG4 remains preferred for RoHS-compliant production. |
Compared with TLV9001IDBVR, LMV321IDBVRG4 offers lower cost and proven robustness in high-temperature industrial environments, while LMV321M5X provides identical performance in alternate packaging - making LMV321IDBVRG4 the optimal choice for cost-sensitive, thermally demanding, RoHS-compliant designs.
Availability
LMV321IDBVRG4 is available at Aetrix Electronics and suitable for portable media players, automotive cabin sensors, industrial motor controllers, and smart thermostats requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LMV321IDBVRG4 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMV3xx family was designed to replace legacy LM324/LM358 op-amps in low-voltage, space-constrained applications - prioritizing rail-to-rail output, ground-sensing inputs, and ultra-low power without sacrificing AC performance.
FAQ
What is the maximum operating temperature for LMV321IDBVRG4?
The LMV321IDBVRG4 is specified for continuous operation from –40°C to +125°C ambient temperature. This extended range is validated per TI's Q100-qualified test flow and supports deployment in engine bay sensors, industrial PLC I/O modules, and outdoor IoT gateways where thermal stress exceeds standard commercial-grade limits. The device maintains 1 MHz bandwidth and rail-to-rail output swing across this full range.
Does LMV321IDBVRG4 include a shutdown pin?
No, LMV321IDBVRG4 does not include a shutdown pin or internal power-down mode. It is a basic single op-amp variant within the LMV3xx family - unlike the LMV324S, which integrates dual-pair shutdown control. To achieve low-power standby, external switching of the VCC supply or use of a discrete MOSFET high-side switch is required. TI confirms no internal shutdown circuitry exists in LMV321IDBVRG4.
Can LMV321IDBVRG4 drive a 10 kΩ load rail-to-rail at 2.7 V supply?
Yes, LMV321IDBVRG4 delivers rail-to-rail output swing into 10 kΩ loads at 2.7 V supply: high-level output reaches within 60 mV of VCC, and low-level output sinks to within 60 mV of GND. This is verified in Section 7.5 of the SLOS263W datasheet under "Output swing" with RL = 10 kΩ to 1.35 V. Performance holds across –40°C to +125°C, enabling reliable ADC interface in battery-powered systems.
What is the input bias current specification for LMV321IDBVRG4?
The input bias current for LMV321IDBVRG4 is 250 nA maximum at 25°C and 500 nA maximum across the full –40°C to +125°C operating range, per Section 7.5 and 7.6 of the SLOS263W datasheet. This low bias current minimizes voltage error in high-impedance sensor interfaces (e.g., pH electrodes or photodiode transimpedance stages), especially when paired with feedback resistors ≤1 MΩ.
Is LMV321IDBVRG4 pin-compatible with other SOT-23 op-amps like MCP6001?
LMV321IDBVRG4 uses standard SOT-23-5 pinout (OUT, IN–, IN+, GND, VCC+) and is mechanically compatible with most single-op-amp SOT-23-5 devices. However, electrical differences exist: MCP6001 has lower supply current (100 μA) but reduced CMRR (60 dB vs. 63 dB) and narrower supply range (1.8–6.0 V). Direct replacement requires validation of gain error, noise, and stability in the target circuit - TI does not guarantee functional or pin compatibility with non-TI parts.
LMV321IDBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 160 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:
- SOT-23-5
LMV321IDBVRG4 FAQ
1.How can I place an order for LMV321IDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV321IDBVRG4 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 LMV321IDBVRG4 reliable?
The price and inventory of LMV321IDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV321IDBVRG4 is usually 5 days.
3.What payment methods are accepted for LMV321IDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV321IDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV321IDBVRG4?
LMV321IDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV321IDBVRG4 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 LMV321IDBVRG4?
For technical support, including LMV321IDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV321IDBVRG4 requirements.
6.How does Aetrix verify that LMV321IDBVRG4 is sourced from the original manufacturer or authorized distributors?
All LMV321IDBVRG4 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 LMV321IDBVRG4 meets industry standards.
7.What is the process for return or replacement of LMV321IDBVRG4?
All LMV321IDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LMV321IDBVRG4, 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 LMV321IDBVRG4 part is unused and in its original packaging.
Return procedure for LMV321IDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV321IDBVRG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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