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Texas Instruments LPV321DBVR
- Part No.:
- LPV321DBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LPV321DBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,877
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Product details
Overview
LPV321DBVR 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 85°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 LPV321DBVR datasheet, LPV321DBVR pinout, LPV321DBVR application, or LPV321DBVR equivalent, key selection criteria include its guaranteed 9 μA ICC at 5 V, input common-mode range extending to −0.2 V (below ground), stable operation with 1000-pF capacitive loads, and SOT-23-5 packaging for space-constrained PCB layouts.
Technical Context
The LPV321DBVR employs a CMOS input stage enabling rail-to-rail input common-mode voltage range (−0.2 V to VCC+ − 0.8 V) and ultra-low input bias current (1.7–50 nA). Its output stage is designed for true rail-to-rail swing under 100-kΩ load, with no crossover distortion and phase margin ≥71° at CL = 22 pF.
It operates across 2.7 V to 5 V supply, supports full-spec performance at 5 V including 152 kHz GBW and 7 mV max input offset voltage, and meets JESD 78 Class II latch-up immunity (>100 mA) and JESD 22 ESD ratings (2 kV HBM, 200 V MM, 1 kV CDM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5 V - enables direct integration into single-cell Li-ion or two-cell alkaline systems without regulation. |
| Supply Current (ICC) | 9 μA typical at 5 V - reduces quiescent power by >50% vs. standard LMV321, critical for multi-year battery life. |
| Gain-Bandwidth Product | 152 kHz at 5 V - sufficient for DC-coupled sensor amplification, active filtering up to ~10 kHz, and slow-settling precision circuits. |
| Rail-to-Rail Output Swing | VCC+ − 3.5 mV / VCC− + 90 mV at 100-kΩ - maximizes dynamic range in low-voltage ADC front-ends and DAC buffers. |
| Input Common-Mode Range | −0.2 V to VCC+ − 0.8 V - allows direct sensing of signals referenced to ground or negative rails in single-supply systems. |
| Capacitive Load Drive | Stable with 1000 pF - eliminates need for isolation resistors when driving ADC inputs or long traces. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and consumer environments without derating. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.15 mm body, surface-mount, RoHS-compliant, moisture sensitivity level (MSL) 1 (unlimited floor life at ≤30°C/60% RH).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; drives 100-kΩ loads directly without external compensation. |
| 2 (IN−) | Inverting input | High-impedance CMOS node; accepts signals down to −0.2 V relative to VCC−. |
| 3 (VCC−) | Negative supply rail | Ground reference for single-supply operation; must be connected to system GND. |
| 4 (IN+) | Non-inverting input | High-impedance CMOS node; supports input common-mode range extending below ground. |
| 5 (VCC+) | Positive supply rail | Accepts 2.7 V to 5 V; powers internal bias circuitry and output stage. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 9 μA at 5 V - enables always-on sensor nodes with multi-year battery life on coin cells. |
| Rail-to-rail output | Swings within 3.5 mV of VCC+ and 90 mV of VCC− - preserves full ADC resolution in 3.3 V systems. |
| No crossover distortion | CMOS output stage eliminates crossover notch - ensures clean small-signal fidelity in audio and instrumentation paths. |
| Extended input common-mode range | Includes ground and extends −0.2 V below VCC− - simplifies interfacing with transducers and current-sense resistors. |
| Robust ESD protection | 2 kV HBM, 200 V MM, 1 kV CDM - withstands handling and board-level electrostatic events without screening. |
Applications
| Portable Gas Sensor Interface | Low-Power ECG Front-End |
|---|---|
Use Scenario: Amplifying microvolt-level signals from electrochemical gas sensors powered by CR2032 batteries. IC Role / Device Role / Timing Role: Precision DC-coupled transducer amplifier with rail-to-rail output driving 12-bit SAR ADC. Use Value: 9 μA supply current extends battery life beyond 5 years; rail-to-rail swing captures full sensor dynamic range at 3.3 V. | Use Scenario: Conditioning biopotential signals in wearable heart-rate monitors with strict size and power constraints. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier buffer with high input impedance and low noise. Use Value: Input common-mode range down to −0.2 V enables direct connection to electrode interfaces; no crossover distortion preserves ST-segment fidelity. |
| Industrial Temperature Transmitter | Smart Home Motion Detector Signal Chain |
Use Scenario: Amplifying RTD or thermistor bridge outputs in 4–20 mA loop-powered field transmitters. IC Role / Device Role / Timing Role: Low-drift, low-power signal conditioner operating from 3.3 V derived from loop supply. Use Value: 7 mV max input offset voltage minimizes calibration burden; stable with 1000-pF loads avoids layout sensitivity to trace capacitance. | Use Scenario: Amplifying PIR sensor outputs in battery-operated occupancy sensors requiring >1-year shelf life. IC Role / Device Role / Timing Role: AC-coupled amplifier with shutdown control for duty-cycled operation. Use Value: Ultra-low ICC reduces average current during sleep mode; rail-to-rail output ensures reliable detection threshold crossing at 2.7 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321DBVR | Higher supply current (18 μA), same pinout and rail-to-rail output - not rated for −40°C to 85°C over full voltage range. | Less suitable for extended temperature or ultra-low-power designs where 9 μA is critical. | Select LPV321DBVR when <10 μA ICC and full industrial temp range are mandatory. |
| TLV2461CDBVR | Higher GBW (6.4 MHz), higher ICC (550 μA), wider supply range (2.7 V to 6 V) - different internal architecture and biasing. | Used where speed matters more than power; not drop-in due to higher current and thermal profile. | Choose TLV2461CDBVR only if bandwidth >1 MHz is required and power budget allows >50× increase. |
Compared with LMV321DBVR and TLV2461CDBVR, the LPV321DBVR uniquely balances sub-10 μA quiescent current, guaranteed rail-to-rail output, and −40°C to 85°C operation in SOT-23-5 - making it the optimal choice for energy-harvested and battery-constrained signal chains where speed is secondary to efficiency.
Availability
LPV321DBVR is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, and smart home motion detectors requiring stable component supply and long-term manufacturability.
Supply support for LPV321DBVR 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, embedded processing, and connectivity technologies with over 50 years of innovation in precision analog design.
The LPV321DBVR belongs to TI's LPV3xx family of ultra-low-power, rail-to-rail op-amps engineered specifically for cost-sensitive, space-constrained, battery-powered applications where minimizing ICC without sacrificing DC precision is essential.
FAQ
What is the maximum supply voltage for LPV321DBVR?
The absolute maximum supply voltage for LPV321DBVR is 5.5 V, but its recommended operating range is 2.7 V to 5 V. Operation above 5 V risks permanent damage, while performance parameters such as gain-bandwidth and input offset voltage are specified and guaranteed only within the 2.7–5 V range per the SLOS433I datasheet.
Does LPV321DBVR support rail-to-rail input?
LPV321DBVR supports rail-to-rail *output*, but its input common-mode voltage range is −0.2 V to VCC+ − 0.8 V - meaning it accepts inputs down to 0.2 V below ground and up to 0.8 V below VCC+, which includes ground in single-supply configurations. It does not support full rail-to-rail input (i.e., VCC+ itself is not a valid input voltage).
Can LPV321DBVR drive a 1000-pF capacitive load stably?
Yes, LPV321DBVR is explicitly characterized and guaranteed stable with capacitive loads up to 1000 pF, as confirmed in the SLOS433I datasheet (Section "Stable With Capacitive Load of 1000 pF"). No external isolation resistor is required, simplifying design for ADC input buffering and filter stages.
What is the input offset voltage specification for LPV321DBVR at 5 V supply?
At 5 V supply and TA = 25°C, the input offset voltage (VIO) for LPV321DBVR is 1.5 mV (min), 7 mV (typ), and 10 mV (max) over −40°C to +85°C. The datasheet specifies 11 mV max over the extended −40°C to +125°C range for the 'I' grade, but LPV321DBVR is the standard-grade part rated for −40°C to +85°C.
Is LPV321DBVR pin-compatible with other members of the LPV3xx family?
No - LPV321DBVR (single, SOT-23-5) is not pin-compatible with LPV358 (dual, 8-pin packages) or LPV324 (quad, 14-pin packages). Within the single-channel variants, LPV321DBVR shares identical pinout with LPV321DCKR (SC-70-5), but differs from SOIC-8 op-amps like LMV321. Always verify package drawing DBV before PCB layout.
LPV321DBVR 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LPV321DBVR FAQ
1.How can I place an order for LPV321DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV321DBVR 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 LPV321DBVR reliable?
The price and inventory of LPV321DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV321DBVR is usually 5 days.
3.What payment methods are accepted for LPV321DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV321DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV321DBVR?
LPV321DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV321DBVR 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 LPV321DBVR?
For technical support, including LPV321DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV321DBVR requirements.
6.How does Aetrix verify that LPV321DBVR is sourced from the original manufacturer or authorized distributors?
All LPV321DBVR 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 LPV321DBVR meets industry standards.
7.What is the process for return or replacement of LPV321DBVR?
All LPV321DBVR units undergo pre-shipment inspection (PSI). If there is an issue with LPV321DBVR, 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 LPV321DBVR part is unused and in its original packaging.
Return procedure for LPV321DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPV321DBVR 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
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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