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Texas Instruments LM321LVIDBVR
- Part No.:
- LM321LVIDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM321LVIDBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
Unit Price:$0.000000
Ext Price:$0.000000
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Product Details
LM321LVIDBVR - TI Single Low-Voltage Operational Amplifier (2.7V-5.5V, 1MHz, SOT-23-5)
The LM321LVIDBVR from Texas Instruments is a single low-voltage operational amplifier operating from 2.7V to 5.5V, with 1MHz gain-bandwidth, low input offset of ±1mV, an input common-mode range that includes ground, and just 90µA supply current per channel. Unity-gain stable and housed in a tiny SOT-23-5 package, it is an industry-standard choice for cost-sensitive sensor and signal-conditioning designs.
Product Introduction
The LM321LVIDBVR is the single-channel member of TI's LM3xxLV low-voltage op-amp family (LM321LV single / LM358LV dual / LM324LV quad). It runs on a single supply from 2.7V to 5.5V, making it a drop-in low-voltage upgrade of the classic LM321/LM358/LM324 industry-standard amplifiers for modern 3.3V and 5V systems.
With a 1MHz gain-bandwidth product, ±1mV typical input offset voltage, an input common-mode voltage range that includes ground (the negative rail), and a quiescent current of only 90µA per channel, the LM321LV balances adequate bandwidth with very low power - ideal for battery-powered and always-on sensor front ends. It is unity-gain stable and offers robust 2kV HBM ESD protection.
Supplied in the space-saving SOT-23-5 (DBV) package, the LM321LVIDBVR suits compact boards in cordless appliances, power-supply monitoring, battery management, sensor signal conditioning and current sensing across a -40°C to +125°C range.
Expert Technical Insight
Why pick the LM321LV for a 3.3V/5V single-supply sensor front end?
- Input common-mode includes ground: the input range reaching the negative rail lets the amplifier sense signals referenced to ground (e.g. low-side shunt, ratiometric sensors) on a single supply without a negative rail or extra bias.
- 1MHz bandwidth at only 90µA: the bandwidth-to-power ratio fits always-on, battery-operated conditioning where both responsiveness and long runtime matter; unity-gain stability simplifies buffer and gain-stage design.
- ±1mV offset, industry-standard pinout: low offset preserves DC accuracy in precision dividers and amplifiers, while the familiar single-op-amp SOT-23-5 pinout eases migration from existing LMV321 / LM321 designs.
Key Benefits
Single-supply operation from 2.7V to 5.5V fits 3.3V and 5V rails directly - a low-voltage upgrade of the classic LM321/LM358/LM324.
Input range reaches the negative rail, enabling true single-supply sensing of ground-referenced signals without a negative supply.
1MHz gain-bandwidth at just 90µA/channel gives a strong bandwidth-to-power ratio for always-on, battery-powered designs.
Low input offset voltage preserves DC accuracy; unity-gain stable with 2kV HBM ESD robustness.
Specifications
| Parameter | Value | Condition / Notes |
|---|---|---|
| Device Type | Single Low-Voltage Operational Amplifier | LM3xxLV family (LM321LV single) |
| Manufacturer | Texas Instruments | |
| Supply Voltage | 2.7 V ~ 5.5 V | Single supply |
| Gain-Bandwidth Product | 1 MHz | Typical |
| Input Offset Voltage | ±1 mV | Typical |
| Input Common-Mode Range | Includes ground (V-) | Single-supply ground sensing |
| Quiescent Current | 90 µA / channel | Low power |
| Input Voltage Noise | 40 nV/√Hz | Broadband |
| Stability | Unity-gain stable | |
| ESD (HBM) | 2 kV | Human body model |
| Operating Temperature | -40°C ~ +125°C | |
| Package | SOT-23-5 (DBV) | Lead-free / RoHS |
Note: Refer to the official TI LM321LV datasheet for full electrical parameters and curves. Subject to change without notice; verify all parameters before final design.
Package Information
The LM321LVIDBVR is supplied in the SOT-23-5 (DBV) surface-mount package - a compact 5-pin small-outline transistor package widely used for single op-amps. Its small footprint suits space-constrained boards in portable and sensor applications.
The DBV package is lead-free and RoHS compliant, supplied on tape and reel (the "R" suffix) for automated assembly. Standard SOT-23-5 land patterns and reflow profiles apply.
Pin Configuration (SOT-23-5)
The LM321LVIDBVR is a single op-amp in a 5-pin SOT-23 package:
- Pin 1 - IN+ : Non-inverting input.
- Pin 2 - V- (GND): Negative supply / ground.
- Pin 3 - IN- : Inverting input.
- Pin 4 - OUT: Amplifier output.
- Pin 5 - V+ : Positive supply (2.7V~5.5V).
Decouple V+ to V- with a 0.1µF ceramic capacitor close to the device. Confirm the exact pin assignment against the datasheet image below before layout.
Alternative Parts
The following low-voltage op-amps are listed for reference. Verify channel count, supply range, bandwidth, offset and package before substituting.
| Part Number | Brand | Type | Package | Key Feature |
|---|---|---|---|---|
| LM358LVIDGKR | TI | Dual low-voltage op-amp / 2.7-5.5V | VSSOP-8 | Same family, two channels |
| LM324LVIDR | TI | Quad low-voltage op-amp / 2.7-5.5V | SOIC-14 | Same family, four channels |
| LMV321IDBVR | TI | Single op-amp / 2.7-5.5V / 1MHz | SOT-23-5 | Classic single low-voltage op-amp |
| TLV9061IDBVR | TI | Single RRIO op-amp / 1.8-5.5V / 10MHz | SOT-23-5 | Higher bandwidth, rail-to-rail I/O |
Manufacturer Information
Texas Instruments (NASDAQ: TXN), headquartered in Dallas, Texas, USA, is one of the world's largest analog semiconductor suppliers. The LM3xxLV family extends TI's industry-standard LM321/LM358/LM324 amplifiers into the low-voltage 2.7V-5.5V domain for modern single-supply systems, with full datasheet, SPICE model and TINA-TI design support.
TI maintains technical support centers and local distribution in China, providing fast sample and volume supply, application notes and reference designs for its operational amplifier portfolio.
Application Areas
Frequently Asked Questions
What is LM321LVIDBVR used for?
LM321LVIDBVR is a single low-voltage op-amp for 2.7-5.5V single-supply sensor signal conditioning, current sensing, buffering and gain stages in cost-sensitive designs.
Can the LM321LV sense ground-referenced signals on a single supply?
Yes. Its input common-mode range includes ground (the negative rail), so it can amplify signals referenced to ground without a negative supply - suitable for low-side current sensing.
What is the difference between LM321LV, LM358LV and LM324LV?
They share the same low-voltage architecture; LM321LV is single-channel, LM358LV is dual and LM324LV is quad.
Disclaimer
Information Accuracy: Technical specifications on this page are based on the TI official datasheet. We strive for accuracy and completeness, but specifications are subject to change without notice. Verify all parameters before final design.
Product Authenticity Guarantee: We guarantee all products sold are genuine factory originals with complete material traceability.
Technical Support: Free technical consultation services are available both before and after purchase.
Application Note: This product page is for reference only. Suitability for specific applications should be verified by design engineers based on actual system requirements.
LM321LVIDBVR Specifications
- Specifications
- Attributes
- Property Value
- Manufacturer
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Part Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- SR - Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 1 MHz
- 3 dB Bandwidth:
- -
- Mounting Style:
- Surface Mount
- Current - Input Bias:
- 15 pA
- Vos - Input Offset Voltage:
- 1 mV
- Output Type:
- -
- Current - Supply:
- 90µA
- Current - Output / Channel:
- 40 mA
- Qualification:
- -
- Supply Voltage - Min:
- 2.7 V
- Supplier Device Package:
- SOT-23-5
- Grade:
- -
- Supply Voltage - Max:
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
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