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Texas Instruments LMV321IDBVRQ1
- Part No.:
- LMV321IDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV321IDBVRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,633
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Product details
Overview
LMV321IDBVRQ1 from Texas Instruments is an automotive-grade single rail-to-rail output operational amplifier optimized for 2.7-V to 5.5-V single-supply operation. It delivers 1-MHz unity-gain bandwidth, 1-V/µs slew rate, 130-µA typical supply current, and rail-to-rail output swing - enabling precision signal conditioning in space-constrained automotive sensor interfaces and body electronics.
For engineers reviewing the LMV321IDBVRQ1 datasheet, LMV321IDBVRQ1 pinout, LMV321IDBVRQ1 application, or LMV321IDBVRQ1 equivalent, key selection criteria include its AEC-Q100 qualification, −40°C to 125°C operating range, low input offset voltage (7 mV max), no crossover distortion, and SOT-23-5 package compatibility with high-density PCB layouts.
Technical Context
The LMV321IDBVRQ1 employs a CMOS input stage with ground-sensing common-mode input range (−0.2 V to VCC + 0.2 V) and Class AB output stage enabling true rail-to-rail output swing within 10 mV of supply rails under 10-kΩ load. Its internal biasing supports stable operation down to 2.7 V while maintaining 60° phase margin and 10 dB gain margin at unity gain.
Designed specifically for automotive applications, the device features enhanced ESD protection (±2 kV HBM), qualified thermal performance up to 150°C junction temperature, and guaranteed functionality across the full −40°C to 125°C ambient range without derating - meeting critical requirements for engine control, HVAC, and ADAS subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct interface with 3.3-V and 5-V microcontrollers and sensors without level-shifting. |
| Unity-Gain Bandwidth | 1 MHz - supports stable closed-loop operation for DC to audio-frequency signal conditioning (e.g., thermistor amplification, battery voltage monitoring). |
| Slew Rate | 1 V/µs - ensures faithful reproduction of fast transients in motor control feedback loops and PWM-based sensor excitation. |
| Input Offset Voltage | 7 mV max (full temp range) - provides ≤0.7% error in 1-V full-scale measurements, suitable for mid-precision analog front-ends. |
| Supply Current | 130 µA typ - allows continuous operation in always-on automotive modules with <100-µA average system power budgets. |
| Output Swing | VCC − 10 mV (high), 60 mV above GND (low) - delivers >98% dynamic range utilization in single-supply 12-bit ADC interfacing. |
| Common-Mode Input Range | −0.2 V to VCC + 0.2 V - permits direct sensing of signals referenced to ground or negative bias points in automotive battery monitoring. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.15 mm footprint with gull-wing leads, JEDEC-standard moisture sensitivity level 1 (260°C peak reflow), RoHS-compliant green finish (Pb-free, no Sb/Br).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN− | Inverting input | Accepts feedback network or differential signal path; supports unity-gain stable configurations with ≥10-pF capacitive load. |
| 2 - IN+ | Non-inverting input | Direct connection to sensor output or reference voltage; common-mode range includes ground for single-supply sensor biasing. |
| 3 - OUT | Amplifier output | Rail-to-rail capable drive into 2-kΩ loads; internally compensated for stability with 200-pF capacitive load. |
| 4 - GND | Analog ground reference | Single-point return for input and output paths; must be isolated from digital ground to prevent noise coupling in mixed-signal systems. |
| 5 - VCC+ | Positive supply rail | Accepts 2.7–5.5 V; decoupling capacitor (0.1 µF ceramic) required within 5 mm for transient immunity in automotive environments. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (−40°C to 125°C) qualification ensures reliability in engine bay and powertrain applications per automotive stress testing standards. |
| No Crossover Distortion | Class AB output stage eliminates dead-zone nonlinearity, preserving signal fidelity in audio and precision analog measurement paths. |
| Rail-to-Rail Output | Delivers full supply voltage swing (e.g., 0–5.4 V on 5.5-V rail), maximizing ADC resolution and eliminating need for external level-shifting circuitry. |
| Low Input Bias Current | 250 nA max enables high-impedance sensor interfacing (e.g., pH electrodes, thermistors) without significant voltage drop across source resistance. |
| Stable at Unity Gain | Internally compensated for 1-MHz bandwidth with ≥60° phase margin, allowing direct use in buffer, comparator, and active filter designs without external compensation. |
Applications
| Engine Coolant Temperature Sensing | Automotive Cabin Air Quality Monitor |
|---|---|
Use Scenario: Amplifies low-level voltage from NTC thermistor in coolant loop, feeding 12-bit ADC in engine control unit. IC Role / Device Role / Timing Role: Precision DC-coupled non-inverting amplifier with gain = 2.5, providing offset-compensated linearization of thermistor response. Use Value: 7-mV max input offset ensures ≤0.7% measurement error over −40°C to 125°C, meeting OEM calibration tolerance requirements. | Use Scenario: Conditions analog output of CO₂ sensor in HVAC control module, rejecting common-mode noise from vehicle electrical system. IC Role / Device Role / Timing Role: Rail-to-rail output buffer isolating sensor from ADC input capacitance while maintaining full 0–3.3-V dynamic range. Use Value: 130-µA supply current enables continuous operation in sleep-mode HVAC systems with <10-µA total quiescent budget. |
| 12-V Battery Voltage Monitoring | Electric Power Steering (EPS) Motor Current Sense |
Use Scenario: Scales and offsets raw battery voltage (9–16 V) to 0–3.3 V range for microcontroller ADC input in body control module. IC Role / Device Role / Timing Role: Inverting amplifier with precision resistor divider, leveraging ground-referenced input to simplify high-side sensing topology. Use Value: Common-mode input range extending to −0.2 V allows direct connection to shunt resistor low-side node without level-shifting components. | Use Scenario: Amplifies mV-level voltage across bidirectional current-sense shunt in EPS motor driver, feeding fault-detection comparator. IC Role / Device Role / Timing Role: High-speed unity-gain buffer with 1-V/µs slew rate preserving fast current transients during torque demand changes. Use Value: 1-MHz bandwidth supports accurate capture of 100-kHz PWM ripple components, enabling real-time overcurrent detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321QDBVRQ1 | Same silicon die and SOT-23-5 package; differs only in top-side marking (RCCB vs RC1B) and extended temperature screening (−40°C to 125°C vs −40°C to 85°C). | Targeted at higher-temperature zones (e.g., under-hood ECUs); identical electrical specs and layout compatibility. | Select LMV321QDBVRQ1 when operating ambient exceeds 85°C or when full AEC-Q100 Grade 0 qualification is required. |
| TSV911IQDBVRQ1 | Higher 8-MHz bandwidth, 15-V/µs slew rate, and lower 1.5-mV max input offset, but 125-µA supply current and same SOT-23-5 footprint. | Better suited for high-speed sensor interfaces (e.g., wheel speed ABS sensors) where bandwidth >1 MHz is mandatory. | Choose TSV911IQDBVRQ1 when system requires faster settling time or tighter offset accuracy, accepting slightly higher cost and identical board space. |
Compared with LMV321QDBVRQ1, the LMV321IDBVRQ1 offers identical performance at lower temperature grade - ideal for cabin and chassis modules. Against TSV911IQDBVRQ1, it trades bandwidth and offset for proven robustness in cost-sensitive, moderate-speed automotive functions.
Availability
LMV321IDBVRQ1 is available at Aetrix Electronics and suitable for automotive body electronics, sensor signal conditioning, and power management systems requiring stable component supply across production lifecycles.
Supply support for LMV321IDBVRQ1 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 automotive IC design expertise and AEC-Q100 process validation.
The LMV3xx-Q1 product line was engineered specifically for cost-sensitive, low-voltage automotive subsystems - delivering rail-to-rail performance, extended temperature operation, and robust EMC behavior in harsh vehicle environments.
FAQ
What is the maximum operating temperature range for the LMV321IDBVRQ1?
The LMV321IDBVRQ1 is qualified for operation from −40°C to 125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements. This rating is verified across all electrical parameters in the datasheet's "electrical characteristics at specified free-air temperature range" tables, ensuring reliable function in under-hood and powertrain applications where junction temperatures may reach 150°C.
Does the LMV321IDBVRQ1 support rail-to-rail input operation?
The LMV321IDBVRQ1 does not support rail-to-rail input - its common-mode input voltage range extends from −0.2 V to VCC + 0.2 V, which includes ground but does not reach the positive rail. However, this ground-sensing capability enables direct interfacing with single-ended sensors referenced to system ground, a key requirement in automotive battery monitoring and thermistor circuits.
Can the LMV321IDBVRQ1 drive a 10-kΩ load while maintaining rail-to-rail output swing?
Yes, the LMV321IDBVRQ1 guarantees rail-to-rail output swing into a 10-kΩ load: high-level output reaches within 10 mV of VCC, and low-level output rises no higher than 180 mV above GND at 5 V supply. This performance is specified in the "electrical characteristics" table under "Output swing" conditions and enables full utilization of 12-bit ADC input ranges without external level-shifting components.
Is the LMV321IDBVRQ1 pin-compatible with standard LM321 or LMV321 variants?
The LMV321IDBVRQ1 uses the SOT-23-5 (DBV) package with identical pinout to non-automotive LMV321 variants (e.g., LMV321IDBVR), including IN−, IN+, OUT, GND, and VCC+ assignments. However, it is not pin-compatible with LM321 (SOIC-8 or TO-99 packages) due to different pin count and physical layout - board redesign is required for migration from legacy bipolar op-amps.
What packaging and environmental compliance does the LMV321IDBVRQ1 meet?
The LMV321IDBVRQ1 is supplied in a green (RoHS-compliant, Pb-free, no Sb/Br) SOT-23-5 package with CU NIPDAU lead finish and moisture sensitivity level 1 (MSL-1, 260°C peak reflow). It meets AEC-Q100 Grade 1 qualification and is rated for automotive production use with traceable lot documentation and TI's standard 10-year product longevity commitment for qualified parts.
LMV321IDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 ~ 85°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMV321IDBVRQ1 FAQ
1.How can I place an order for LMV321IDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV321IDBVRQ1 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 LMV321IDBVRQ1 reliable?
The price and inventory of LMV321IDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV321IDBVRQ1 is usually 5 days.
3.What payment methods are accepted for LMV321IDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV321IDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV321IDBVRQ1?
LMV321IDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV321IDBVRQ1 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 LMV321IDBVRQ1?
For technical support, including LMV321IDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV321IDBVRQ1 requirements.
6.How does Aetrix verify that LMV321IDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All LMV321IDBVRQ1 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 LMV321IDBVRQ1 meets industry standards.
7.What is the process for return or replacement of LMV321IDBVRQ1?
All LMV321IDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMV321IDBVRQ1, 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 LMV321IDBVRQ1 part is unused and in its original packaging.
Return procedure for LMV321IDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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