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Texas Instruments LPV321IDBVRG4
- Part No.:
- LPV321IDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LPV321IDBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,146
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Product details
Overview
LPV321IDBVRG4 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 LPV321IDBVRG4 datasheet, LPV321IDBVRG4 pinout, LPV321IDBVRG4 application, or LPV321IDBVRG4 equivalent, key selection criteria include its guaranteed 125°C operation, input common-mode range extending to −0.2 V, stability with 1000-pF capacitive loads, and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The LPV321IDBVRG4 implements a CMOS input stage with rail-to-rail output stage, enabling full-swing operation in single-supply configurations down to 2.7 V. Its input common-mode voltage range (−0.2 V to VCC+ − 0.8 V) supports ground-referenced inputs, while internal biasing ensures no crossover distortion across the output range.
It achieves stable unity-gain operation with capacitive loads up to 1000 pF and maintains ≥71° phase margin at 5 V with 22-pF load - critical for driving ADC input buffers or active filter stages without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5 V - enables direct interface with Li-ion, coin-cell, and 3.3-V logic systems |
| Supply Current (typ) | 9 μA at 5 V - extends battery life in always-on sensor nodes beyond 10 years (CR2032) |
| Gain-Bandwidth Product | 152 kHz - sufficient for DC–10 kHz signal conditioning in ECG front-ends and temperature transducers |
| Rail-to-Rail Output Swing | VCC+ − 3.5 mV / VCC− + 90 mV @ 100-kΩ - preserves dynamic range in low-voltage data acquisition |
| Input Common-Mode Range | −0.2 V to VCC+ − 0.8 V - accepts signals below ground and near supply rails without clipping |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - reduces need for external protection in ruggedized designs |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.1 mm body, surface-mount, RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; drives 100-kΩ loads directly without buffering |
| 2 (IN−) | Inverting input | High-impedance CMOS node; supports precision feedback networks with <50 nA bias current |
| 3 (GND / VCC−) | Negative supply / ground reference | Single-supply operation requires connection to system ground; dual-supply use connects to negative rail |
| 4 (IN+) | Non-inverting input | Accepts input signals from −0.2 V to VCC+ − 0.8 V; enables ground-sensing in 0–3.3 V systems |
| 5 (VCC+) | Positive supply | Supports 2.7–5 V operation; decoupling capacitor required within 1 cm for stability |
Key Features
| Feature | Design Value |
|---|---|
| No crossover distortion | Ensures clean zero-crossing in AC-coupled audio and sensor amplification without notch artifacts |
| Stable with 1000-pF load | Eliminates need for isolation resistors when driving ADC sample-and-hold or long PCB traces |
| Latch-up immunity >100 mA | Withstands transient overcurrent events in motor-control feedback paths or I/O protection circuits |
| Input voltage range includes ground | Enables direct interfacing with 0–V referenced thermistors, bridge sensors, and current-shunt monitors |
| Low input offset drift (4 µV/°C) | Maintains accuracy across wide temperature ranges in uncalibrated industrial sensor modules |
Applications
| Portable ECG Monitor Front-End | Automotive Cabin Temperature Sensor |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in wearable heart-rate monitors. IC Role / Device Role / Timing Role: Single-supply, low-noise, rail-to-rail op-amp configured as non-inverting amplifier with gain = 100. Use Value: 146 nV/√Hz input noise at 1 kHz and 9 μA supply current enable >8-hour continuous operation on a CR2032 cell while preserving diagnostic SNR. | Use Scenario: Conditioning resistance output from NTC thermistors mounted near HVAC ducts in passenger compartments. IC Role / Device Role / Timing Role: Ground-referenced buffer and level-shifter feeding 12-bit SAR ADC in engine control unit. Use Value: −40°C to +125°C qualification and −0.2 V input capability allow direct connection to thermistor bridges without level-shifting circuitry. |
| Smart Smoke Detector Signal Chain | Industrial 4–20 mA Loop Receiver |
Use Scenario: Amplifying weak photocurrent signals from optical smoke chambers in battery-operated residential alarms. IC Role / Device Role / Timing Role: Transimpedance amplifier with 10-MΩ feedback resistor, powered from 3.3-V LDO. Use Value: 152 kHz GBW and 1000-pF load stability ensure accurate pulse response for fast smoke detection without oscillation. | Use Scenario: Converting 4–20 mA loop current to 0–2.5 V for microcontroller ADC input in programmable logic controllers. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with 125 Ω shunt, operating from isolated 5-V supply. Use Value: Rail-to-rail output swing and 11 mV max input offset guarantee full-scale linearity across entire 4–20 mA range at 125°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power, rail-to-rail output operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2461IDBVR | Higher supply current (23 μA), wider GBW (6.4 MHz), but only rated to 105°C | Not suitable for under-hood automotive or high-temp industrial use where 125°C operation is mandatory | Select TLV2461IDBVR only when higher bandwidth is required and temperature range can be relaxed |
| OPA316IDBVR | Lower input offset (0.5 mV typ), lower noise (11 nV/√Hz), but 100 μA supply current and 10-MHz GBW | Over-specified for ultra-low-power applications; increases quiescent power by 11× vs. LPV321IDBVRG4 | Choose OPA316IDBVR only when precision and speed outweigh battery-life constraints |
Compared with TLV2461IDBVR and OPA316IDBVR, the LPV321IDBVRG4 uniquely balances sub-10-μA quiescent current, guaranteed 125°C operation, and rail-to-rail output in a 5-pin SOT-23 - making it the optimal choice for thermally demanding, energy-constrained embedded sensing nodes.
Availability
LPV321IDBVRG4 is available at Aetrix Electronics and suitable for portable medical devices, automotive cabin sensors, and industrial 4–20 mA loop receivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LPV321IDBVRG4 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 for industrial, automotive, and personal electronics markets.
The LPV321IDBVRG4 belongs to TI's LPV3xx family of ultra-low-power, rail-to-rail output op-amps designed specifically for cost-sensitive, battery-operated, and high-temperature applications where minimal supply current and wide input/output voltage range are essential.
FAQ
What is the maximum operating temperature specification for LPV321IDBVRG4?
The LPV321IDBVRG4 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 rating makes it suitable for under-hood automotive electronics, industrial control cabinets, and outdoor environmental monitoring equipment where thermal stress exceeds standard commercial-grade limits.
Does LPV321IDBVRG4 support true rail-to-rail input operation?
The LPV321IDBVRG4 does not support rail-to-rail input - its input common-mode voltage range is specified as −0.2 V to VCC+ − 0.8 V. However, this range explicitly includes ground (0 V) and extends slightly below it, enabling direct interfacing with ground-referenced sensors like thermistors and current shunts without level-shifting circuitry - a key design advantage over many competing micropower op-amps.
Can LPV321IDBVRG4 drive capacitive loads without external compensation?
Yes, the LPV321IDBVRG4 is explicitly characterized for stability with capacitive loads up to 1000 pF, as stated in the "Features" section and verified in Figure 14 and Figure 15 of the SLOS433I datasheet. This eliminates the need for series isolation resistors when driving ADC input capacitors, long PCB traces, or piezoelectric transducers - simplifying layout and improving signal fidelity in data acquisition systems.
What is the typical supply current of LPV321IDBVRG4 at 2.7 V and 25°C?
The typical supply current of LPV321IDBVRG4 is 9 μA at both 2.7 V and 5 V supply voltages, per the "2.7-V electrical characteristics" table (page 5) and "5-V electrical characteristics" table (page 6) of the SLOS433I datasheet. This consistent ultra-low quiescent current across the full 2.7–5 V range ensures predictable battery life in variable-voltage battery systems such as partially discharged lithium cells.
Is LPV321IDBVRG4 pin-compatible with other members of the LPV3xx family?
No - LPV321IDBVRG4 (single-channel, SOT-23-5) is not pin-compatible with LPV358 (dual, 8-pin packages) or LPV324 (quad, 14-pin packages). While all share identical electrical architecture and performance envelope, their pinouts differ fundamentally due to channel count and package constraints. The LPV321IDBVRG4 uses the standard SOT-23-5 op-amp pinout: OUT, IN−, GND, IN+, VCC+ - confirmed in the "LPV321 . . . DBV OR DCK PACKAGE (TOP VIEW)" diagram on page 1 of the datasheet.
LPV321IDBVRG4 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:
- -
- 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
LPV321IDBVRG4 FAQ
1.How can I place an order for LPV321IDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV321IDBVRG4 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 LPV321IDBVRG4 reliable?
The price and inventory of LPV321IDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV321IDBVRG4 is usually 5 days.
3.What payment methods are accepted for LPV321IDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV321IDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV321IDBVRG4?
LPV321IDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV321IDBVRG4 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 LPV321IDBVRG4?
For technical support, including LPV321IDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV321IDBVRG4 requirements.
6.How does Aetrix verify that LPV321IDBVRG4 is sourced from the original manufacturer or authorized distributors?
All LPV321IDBVRG4 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 LPV321IDBVRG4 meets industry standards.
7.What is the process for return or replacement of LPV321IDBVRG4?
All LPV321IDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LPV321IDBVRG4, 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 LPV321IDBVRG4 part is unused and in its original packaging.
Return procedure for LPV321IDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPV321IDBVRG4 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
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LM2904DGKR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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