My Inquiry
My Account
Texas Instruments LPV321M5X/NOPB
- Part No.:
- LPV321M5X/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LPV321M5X/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,699
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LPV321M5X/NOPB from Texas Instruments is a single-channel, micropower, rail-to-rail output operational amplifier optimized for low-voltage (2.7 V to 5 V), battery-powered applications. It delivers 152 kHz gain-bandwidth product, 9 µA supply current at 5 V, −40°C to +85°C operating temperature, and rail-to-rail output swing (V+ −3.5 mV / V− + 90 mV at 100 kΩ load), enabling precision signal conditioning in portable medical sensors and handheld instrumentation.
For engineers reviewing the LPV321M5X/NOPB datasheet, LPV321M5X/NOPB pinout, LPV321M5X/NOPB application, or LPV321M5X/NOPB equivalent, key selection criteria include micropower consumption, SC70-5 package footprint, input common-mode range extending to ground, guaranteed 2.7-V operation, and bipolar-input noise performance suitable for DC-coupled sensor front-ends.
Technical Context
The LPV321M5X/NOPB employs a bipolar input stage and BiCMOS output stage on Texas Instruments' submicron silicon-gate process, delivering improved noise performance and higher output current drive versus CMOS-only op amps. Its rail-to-rail output architecture supports full dynamic range in single-supply systems down to 2.7 V.
It operates in both single-supply (e.g., 2.7 V to 5 V with V− = GND) and dual-supply modes, with input common-mode voltage range specified from −0.2 V to V+ − 0.8 V and no crossover distortion. The device is internally compensated for unity-gain stability and tolerates direct capacitive loads up to 200 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5 V - Ensures reliable operation across full lithium coin-cell and single Li-ion battery discharge profiles. |
| Supply Current (Typ) | 9 µA at 5 V - Enables multi-year battery life in always-on wearable health monitors and IoT endpoint nodes. |
| Gain-Bandwidth Product | 152 kHz - Supports stable closed-loop gain ≥10 up to ~15 kHz, sufficient for anti-aliasing and sensor signal filtering. |
| Rail-to-Rail Output Swing | V+ −3.5 mV / V− + 90 mV at 100 kΩ - Maximizes usable output voltage range in 3.3-V or lower systems, improving ADC utilization. |
| Input Offset Voltage (Max) | 10 mV over −40°C to +85°C - Allows DC-coupled amplification of millivolt-level transducer outputs without trimming. |
| Input Common-Mode Range | −0.2 V to V+ − 0.8 V - Enables direct sensing of signals referenced to ground in single-supply configurations. |
| ESD Rating (HBM) | ±1500 V - Provides robustness against handling ESD during PCB assembly and field service. |
Pinout & Package
LPV321M5X/NOPB is packaged in a 5-pin SC70 (DBV) package measuring 2.00 mm × 1.25 mm × 0.95 mm, offering ~50% board area reduction versus SOT-23-5 while maintaining compatible thermal and soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN+ | Noninverting Input | Accepts high-impedance sensor or reference signals; supports DC-coupled inputs down to −0.2 V. |
| 2: V− | Negative Supply | Ground reference in single-supply operation; must be connected to system GND or negative rail. |
| 3: IN− | Inverting Input | Feedback node for closed-loop configurations; matched impedance minimizes bias-current-induced offset. |
| 4: OUT | Amplifier Output | Drives 100 kΩ loads to within 3.5 mV of V+ and 90 mV of V−; stable with ≤200 pF capacitive load. |
| 5: V+ | Positive Supply | Accepts 2.7–5 V DC; internal regulation ensures consistent performance across supply variation. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 9 µA supply current enables >10-year battery life in coin-cell-powered devices like glucose meters. |
| Rail-to-Rail Output | Delivers full output swing near supply rails, preserving SNR when interfacing with 10-bit or 12-bit SAR ADCs. |
| Ground-Sensing Input | Input common-mode range includes −0.2 V, allowing direct amplification of 0–VREF sensor outputs without level-shifting. |
| SC70-5 Package | 2.0 × 1.25 mm footprint reduces PCB area by 50% vs SOT-23-5, critical for ultra-compact wearables and hearing aids. |
| No Crossover Distortion | Ensures clean, low-THD amplification of audio and biopotential signals without notch artifacts near zero-crossings. |
Applications
| Portable Medical Sensors | Low-Power Active Filters |
|---|---|
Use Scenario: Amplifying microvolt-level ECG or pulse oximetry photodiode signals in battery-operated patient monitors. IC Role / Device Role / Timing Role: Single-supply, DC-coupled transducer amplifier with rail-to-rail output driving 12-bit ADC input. Use Value: 9 µA quiescent current extends battery life to >2 years; ground-sensing input eliminates need for bias resistors or level shifters. |
Use Scenario: Implementing 2nd-order low-pass filtering before analog-to-digital conversion in environmental sensor nodes. IC Role / Device Role / Timing Role: Unity-gain stable active filter stage with 152 kHz GBW supporting cutoff frequencies up to 15 kHz. Use Value: No external compensation required; SC70-5 package allows integration directly adjacent to sensor, minimizing noise pickup. |
| Handheld Test Equipment | Industrial Process Monitoring |
Use Scenario: Signal conditioning for portable multimeters measuring mV-range thermocouple or strain gauge outputs. IC Role / Device Role / Timing Role: Precision, low-drift buffer amplifier with 10 mV max input offset over industrial temperature range. Use Value: Input offset drift of only 2 µV/°C maintains accuracy across ambient temperature swings without recalibration. |
Use Scenario: Isolating and scaling 4–20 mA loop signals in space-constrained PLC I/O modules. IC Role / Device Role / Timing Role: Low-power, rail-to-rail output amplifier converting current-loop voltage drops to ADC-compatible levels. Use Value: 2.7 V minimum supply supports operation from degraded 3.3 V rails; ±1500 V HBM ESD rating withstands factory handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar general-purpose low-voltage op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV851DBVR | Lower supply current (420 nA), but reduced GBW (5.5 kHz) and output drive (10 mA). | Better for ultra-low-power sleep-mode circuits; unsuitable for >1 kHz signal paths or driving heavy loads. | Select TLV851DBVR only when sub-µA quiescent current dominates over bandwidth and drive requirements. |
| LMV321IDBVR | Higher supply current (65 µA), wider GBW (1 MHz), and faster slew rate (1 V/µs). | Supports higher-frequency filtering and faster transient response, but consumes ~7× more power. | Choose LMV321IDBVR when bandwidth >100 kHz or output drive >20 mA is required, accepting higher power cost. |
Compared with TLV851DBVR and LMV321IDBVR, LPV321M5X/NOPB uniquely balances micropower efficiency (9 µA), usable bandwidth (152 kHz), and rail-to-rail output in the smallest SC70-5 footprint-making it optimal for compact, battery-powered signal chains where moderate speed and ultra-low power coexist.
Availability
LPV321M5X/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, low-power active filters, handheld test equipment, and industrial process monitoring requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LPV321M5X/NOPB 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 designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.
LPV321M5X/NOPB belongs to TI's LPV3xx-N micropower op amp family, engineered specifically for cost-sensitive, space-constrained, battery-powered applications demanding rail-to-rail output, ground-sensing inputs, and guaranteed 2.7-V operation.
FAQ
What is the maximum capacitive load LPV321M5X/NOPB can drive without oscillation?
The LPV321M5X/NOPB is unity-gain stable and can directly drive up to 200 pF of capacitive load without oscillation or excessive ringing. This specification applies under standard test conditions (5 V supply, 25°C). For loads exceeding 200 pF, TI recommends adding an isolation resistor (e.g., 10–100 Ω) between the output and the capacitor to preserve phase margin, as detailed in Figure 37 of the LPV321M5X/NOPB datasheet.
Does LPV321M5X/NOPB support true single-supply operation with input signals at ground potential?
Yes. LPV321M5X/NOPB features an input common-mode voltage range that extends to −0.2 V (below ground) and up to V+ − 0.8 V, enabling true single-supply operation with inputs referenced to GND. This allows direct amplification of 0–VREF sensor outputs-such as thermocouples or bridge transducers-without external level-shifting circuitry, reducing component count and error sources.
What is the typical input offset voltage drift of LPV321M5X/NOPB over temperature?
The LPV321M5X/NOPB has a typical input offset voltage drift of 2 µV/°C, as specified in Section 6.5 of its datasheet. This low drift ensures minimal output error accumulation across the full −40°C to +85°C operating range, making it suitable for precision DC-coupled applications like medical instrumentation and industrial sensor interfaces where calibration stability is critical.
Is LPV321M5X/NOPB pin-compatible with other SC70-5 op amps like TLV341 or OPA316?
No. LPV321M5X/NOPB uses the standard SC70-5 pinout (IN+, V−, IN−, OUT, V+), but TLV341 and OPA316 follow different pin assignments-for example, TLV341 places V+ on Pin 1 and IN+ on Pin 5. Substituting without verifying pin mapping risks incorrect biasing or damage. Always cross-check functional block diagrams and pin configuration tables before replacement.
How does the bipolar input stage of LPV321M5X/NOPB affect noise performance compared to CMOS op amps?
The bipolar input stage of LPV321M5X/NOPB delivers lower input voltage noise (146 nV/√Hz at 1 kHz, 5 V) than typical CMOS micropower op amps, which often exceed 200 nV/√Hz. While its input current noise (0.3 pA/√Hz) is higher than CMOS, the overall noise contribution in high-source-impedance circuits remains dominated by voltage noise-making LPV321M5X/NOPB preferable for low-Z sensor interfaces like photodiodes or strain gauges.
LPV321M5X/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 152 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LPV321M5X/NOPB FAQ
1.How can I place an order for LPV321M5X/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV321M5X/NOPB 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 LPV321M5X/NOPB reliable?
The price and inventory of LPV321M5X/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV321M5X/NOPB is usually 5 days.
3.What payment methods are accepted for LPV321M5X/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV321M5X/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV321M5X/NOPB?
LPV321M5X/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV321M5X/NOPB 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 LPV321M5X/NOPB?
For technical support, including LPV321M5X/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV321M5X/NOPB requirements.
6.How does Aetrix verify that LPV321M5X/NOPB is sourced from the original manufacturer or authorized distributors?
All LPV321M5X/NOPB 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 LPV321M5X/NOPB meets industry standards.
7.What is the process for return or replacement of LPV321M5X/NOPB?
All LPV321M5X/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LPV321M5X/NOPB, 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 LPV321M5X/NOPB part is unused and in its original packaging.
Return procedure for LPV321M5X/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPV321M5X/NOPB Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
