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Texas Instruments LPV321IDBVR
- Part No.:
- LPV321IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LPV321IDBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,355
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Product details
Overview
LPV321IDBVR from Texas Instruments is a single-channel, rail-to-rail output operational amplifier optimized for low-voltage (2.7 V to 5 V), ultra-low-power (9 μA typical supply current at 5 V) applications. It delivers 152 kHz gain-bandwidth product, −40°C to +125°C operating range, and rail-to-rail output swing within 3.5 mV of VCC+ and 90 mV of VCC− at 100-kΩ load - ideal for battery-powered sensor signal conditioning and portable medical devices.
For engineers reviewing the LPV321IDBVR datasheet, LPV321IDBVR pinout, LPV321IDBVR application, or LPV321IDBVR equivalent, key selection criteria include its guaranteed 125°C temperature rating, SOT-23-5 package footprint, input common-mode range extending to −0.2 V, and stability with 1000-pF capacitive loads - critical for high-impedance sensor interfaces and space-constrained IoT endpoints.
Technical Context
The LPV321IDBVR employs a CMOS input stage enabling nanoscale input bias current (2 nA typical at 25°C) and wide input common-mode range (−0.2 V to VCC+ − 0.8 V). Its internal compensation ensures unity-gain stability without external components while maintaining phase margin ≥71° at 22-pF load.
It operates across 2.7–5 V supply rails with rail-to-rail output capability and no crossover distortion, supporting precision DC-coupled amplification in single-supply systems where ground-referenced inputs and near-rail outputs are required - such as thermistor amplifiers and low-side current sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5 V - enables direct operation from single Li-ion cell or 3.3-V rail without regulation |
| Supply Current (typ) | 9 μA at 5 V - extends battery life in always-on wearable sensors beyond 10 years on CR2032 |
| Gain-Bandwidth Product | 152 kHz - sufficient for anti-aliasing filters and DC–100 Hz biosignal amplification |
| Rail-to-Rail Output Swing | VCC+ − 3.5 mV / VCC− + 90 mV at 100-kΩ - preserves dynamic range in 8-bit ADC front-ends |
| Input Common-Mode Range | −0.2 V to VCC+ − 0.8 V - supports ground-sensing and single-supply transducer interfaces |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| ESD Protection | HBM: 2000 V - robust handling in manual assembly and field-repair scenarios |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.15 mm body, gull-wing leads, RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output node - drives 100-kΩ minimum load with rail-to-rail swing |
| 2 | IN− | Inverting input - high-impedance CMOS node (IIB = 2 nA typ) |
| 3 | VCC− | Negative supply terminal - connects to GND in single-supply configurations |
| 4 | IN+ | Non-inverting input - accepts signals down to −0.2 V below GND |
| 5 | VCC+ | Positive supply terminal - operates from 2.7 V to 5 V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 9 μA per channel enables multi-year operation on coin-cell batteries |
| Rail-to-rail output | Delivers full 4.9965 V swing from 5-V rail - maximizes ADC utilization in low-voltage systems |
| Stable with 1000-pF load | Eliminates need for isolation resistor in capacitive sensor buffering (e.g., piezoelectric pickups) |
| Extended temperature range | −40°C to +125°C operation verified per JESD22-A108 - suitable for engine control modules |
| No crossover distortion | Ensures clean zero-crossing in precision AC-coupled instrumentation (e.g., ECG front-end stages) |
Applications
| Portable Medical Sensors | Automotive Cabin Monitoring |
|---|---|
Use Scenario: Amplifying microvolt-level signals from skin-contact electrodes in wearable ECG patches. IC Role / Device Role / Timing Role: Single-supply, DC-coupled transducer amplifier with rail-to-rail output driving 12-bit SAR ADC. Use Value: 9 μA supply current extends battery life to >3 years; −0.2 V input range accommodates electrode offset without level-shifting. | Use Scenario: Conditioning analog outputs from cabin temperature and humidity sensors in HVAC control units. IC Role / Device Role / Timing Role: Low-drift buffer for resistive sensor bridges operating across −40°C to 125°C ambient. Use Value: Guaranteed 125°C operation eliminates derating; 152 kHz GBW supports fast step-response to thermal transients. |
| Industrial Process Transmitters | Smart Home Environmental Nodes |
Use Scenario: Signal conditioning for 4–20 mA loop-powered pressure transmitters in factory automation. IC Role / Device Role / Timing Role: Low-power I/V converter and output driver in 3.3-V loop-powered design. Use Value: 2.7-V minimum supply allows operation during brownout; 1000-pF load stability simplifies PCB layout near long sensor cables. | Use Scenario: Battery-operated air quality sensor nodes measuring CO₂, VOCs, and particulate matter. IC Role / Device Role / Timing Role: Front-end amplifier for electrochemical gas sensors requiring stable bias and low-noise gain. Use Value: 146 nV/√Hz input noise at 1 kHz preserves signal integrity; HBM 2000-V ESD withstands handling in uncontrolled environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321IDBVR | Higher supply current (18 μA), same package and pinout, rated only to 85°C | Not suitable for under-hood or industrial high-temp deployments | Select when cost is primary and temperature range ≤85°C suffices |
| TLV851IDBVR | Lower supply current (420 nA), lower GBW (10 kHz), same 125°C rating and SOT-23-5 package | Better for nanoamp sensor biasing but insufficient for >10 kHz signal paths | Select for ultra-low-power DC sensors where bandwidth <10 kHz is acceptable |
Compared with LMV321IDBVR and TLV851IDBVR, the LPV321IDBVR uniquely balances 125°C operation, 152 kHz bandwidth, and 9 μA supply current in a standard SOT-23-5 footprint - making it optimal for thermally demanding, medium-bandwidth, battery-sensitive designs where neither legacy LMV nor ultra-low-power TLV variants meet all requirements.
Availability
LPV321IDBVR is available at Aetrix Electronics and suitable for portable medical devices, automotive cabin sensors, and industrial process transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LPV321IDBVR 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 delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog ICs.
The LPV321IDBVR belongs to TI's LPV3xx low-voltage op-amp family, engineered specifically for energy-constrained, wide-temperature applications including battery-powered instrumentation and automotive subsystems.
FAQ
What is the maximum operating temperature specification for LPV321IDBVR?
The LPV321IDBVR is characterized and guaranteed to operate from −40°C to +125°C, as confirmed in the "recommended operating conditions" table of the official SLOS433I datasheet. This extended temperature grade distinguishes it from the standard LPV321DBVR (−40°C to +85°C) and makes it suitable for under-hood automotive and industrial control applications where ambient temperatures exceed 105°C.
Does LPV321IDBVR support true rail-to-rail input operation?
The LPV321IDBVR features rail-to-rail *output* swing but not rail-to-rail *input*. Its input common-mode voltage range is specified as −0.2 V to VCC+ − 0.8 V, meaning it accepts inputs 0.2 V below ground and up to 0.8 V below the positive rail. This supports ground-referenced inputs in single-supply systems but does not accommodate signals at the exact VCC+ or VCC− rails.
Can LPV321IDBVR drive a 1000-pF capacitive load without oscillation?
Yes - the LPV321IDBVR is explicitly characterized for stability with up to 1000-pF capacitive loads, as stated in the "Features" section and verified in Figure 14 and Figure 15 of the SLOS433I datasheet. This eliminates the need for external isolation resistors when interfacing with long traces, LCD drivers, or piezoelectric sensors.
What is the typical input offset voltage of LPV321IDBVR at 5 V supply and 25°C?
At VCC = 5 V and TA = 25°C, the typical input offset voltage (VIO) of LPV321IDBVR is 7 mV, with a maximum of 11 mV across the full −40°C to +125°C operating range. This value is documented in the "5-V electrical characteristics" table on page 6 of the SLOS433I datasheet.
Is LPV321IDBVR pin-compatible with other members of the LPV3xx family?
No - the LPV321IDBVR (single-channel, SOT-23-5) is not pin-compatible with LPV358I (dual, 8-pin packages) or LPV324I (quad, 14-pin packages). However, within the single-channel variants, LPV321IDBVR shares identical pinout and footprint with LPV321DBVR, LPV321IDCKR, and LMV321IDBVR - enabling drop-in replacement where temperature and power specs align.
LPV321IDBVR 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:
- 0.1V/µs
- Gain Bandwidth Product:
- 237 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 nA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 9µA
- Current - Output / Channel:
- 72 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LPV321IDBVR FAQ
1.How can I place an order for LPV321IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV321IDBVR 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 LPV321IDBVR reliable?
The price and inventory of LPV321IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV321IDBVR is usually 5 days.
3.What payment methods are accepted for LPV321IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV321IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV321IDBVR?
LPV321IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV321IDBVR 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 LPV321IDBVR?
For technical support, including LPV321IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV321IDBVR requirements.
6.How does Aetrix verify that LPV321IDBVR is sourced from the original manufacturer or authorized distributors?
All LPV321IDBVR 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 LPV321IDBVR meets industry standards.
7.What is the process for return or replacement of LPV321IDBVR?
All LPV321IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with LPV321IDBVR, 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 LPV321IDBVR part is unused and in its original packaging.
Return procedure for LPV321IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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