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Texas Instruments LPV321M7/NOPB
- Part No.:
- LPV321M7/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LPV321M7/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,396
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Product details
Overview
LPV321M7/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 systems. It delivers 152 kHz gain-bandwidth product, 9 µA supply current at 5 V, and rail-to-rail output swing (V+ −3.5 mV / V− + 90 mV at 100 kΩ load) in a space-saving 5-pin SC70 package - enabling compact active filters and portable sensor signal conditioning.
For engineers reviewing the LPV321M7/NOPB datasheet, LPV321M7/NOPB pinout, LPV321M7/NOPB application, or LPV321M7/NOPB equivalent, key selection criteria include micropower operation under 10 µA, guaranteed rail-to-rail output performance at 2.7 V, input common-mode range extending to ground, and SC70 footprint compatibility with high-density portable PCB layouts.
Technical Context
The LPV321M7/NOPB uses a bipolar input/output stage fabricated in TI's submicron BiCMOS process, delivering improved noise performance (146 nV/√Hz at 1 kHz, 5 V) and higher output current drive versus CMOS-only micropower op-amps. Its input common-mode voltage range spans −0.2 V to V+ − 0.8 V, supporting ground-referenced sensing in single-supply configurations.
It achieves stable unity-gain operation with up to 200 pF capacitive load without external compensation, and exhibits no crossover distortion due to its Class AB output stage. The device operates across −40°C to +85°C and is specified for both 2.7 V and 5 V supplies, ensuring consistent performance over full battery discharge profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5 V - supports operation across entire Li-ion battery discharge curve (4.2 V → 2.7 V) without rail adjustment. |
| Supply Current (Typ) | 9 µA at 5 V - enables multi-year battery life in always-on sensor nodes and wearable health monitors. |
| Gain-Bandwidth Product | 152 kHz - sufficient for anti-aliasing filters, DC-coupled sensor amplification, and low-frequency instrumentation up to ~10 kHz. |
| Rail-to-Rail Output Swing | V+ −3.5 mV / V− + 90 mV @ 100 kΩ - maximizes dynamic range in 3.3 V or lower systems, preserving ADC resolution. |
| Input Offset Voltage (Max) | 10 mV over temperature - suitable for precision applications requiring <1% gain error with ≥100 mV input signals. |
| Input Common-Mode Range | −0.2 V to V+ − 0.8 V - allows direct interfacing with grounded sensors (e.g., thermistors, bridge transducers) in single-supply designs. |
| Slew Rate (Typ) | 0.1 V/µs - adequate for step responses in low-speed control loops and filtered sensor outputs. |
Pinout & Package
LPV321M7/NOPB is housed in a 5-pin SC70 package (2.00 mm × 1.25 mm, 0.95 mm height), offering ~50% board area reduction versus SOT-23 while maintaining identical pinout compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN+ | Noninverting input | Accepts signal referenced to ground or mid-supply; supports DC-coupled inputs down to −0.2 V. |
| 2: V− | Negative supply | Connect to GND in single-supply operation; supports dual-supply use down to −2.5 V. |
| 3: IN− | Inverting input | Used for feedback network connection; matched impedance minimizes bias current error. |
| 4: OUT | Amplifier output | Drives loads ≥100 kΩ directly; rail-to-rail swing enables full utilization of 3.3 V ADC reference. |
| 5: V+ | Positive supply | Accepts 2.7–5 V; internal regulation ensures stable biasing across supply variation. |
Key Features
| Feature | Design Value |
|---|---|
| No crossover distortion | Class AB output stage eliminates switching artifacts in audio and precision analog paths, critical for clean low-frequency waveform reproduction. |
| Micropower operation | 9 µA supply current at 5 V enables integration into energy-harvesting nodes and coin-cell-powered IoT endpoints with >5-year runtime. |
| Rail-to-rail output | Delivers usable output swing within 3.5 mV of V+ and 90 mV of V−, maximizing signal-to-noise ratio in low-voltage data acquisition systems. |
| Ground-sensing input | Input common-mode range includes −0.2 V, permitting direct connection to 0 V-referenced transducers without level-shifting circuitry. |
| Capacitive load tolerance | Stable with up to 200 pF load in unity-gain configuration - eliminates need for isolation resistors in LCD bias or DAC buffer applications. |
Applications
| Active Filters | Portable Medical Sensors |
|---|---|
Use Scenario: Second-order Sallen-Key low-pass filter for ECG front-end with 40 Hz cutoff. IC Role / Device Role / Timing Role: Signal conditioning amplifier providing gain, filtering, and rail-to-rail buffering before 12-bit ADC sampling. Use Value: 152 kHz GBW ensures flat response below 40 Hz; 9 µA quiescent current extends disposable patch battery life beyond 7 days. |
Use Scenario: Amplifying thermistor voltage in wearable temperature monitor powered by CR2032. IC Role / Device Role / Timing Role: Ground-referenced DC amplifier with VCM down to −0.2 V, enabling direct thermistor biasing from V+. Use Value: Rail-to-rail output preserves full 0–3.0 V ADC range across 25–45°C; 9 µA supply current yields >3-year shelf life. |
| Low-Power Data Loggers | Industrial Sensor Transmitters |
Use Scenario: Battery-operated environmental logger measuring humidity via capacitive sensor with integrated ADC. IC Role / Device Role / Timing Role: Signal buffer isolating sensor capacitance from ADC input, minimizing loading-induced drift. Use Value: 200 pF capacitive load tolerance allows direct connection without series resistor; SC70 footprint saves >0.8 mm² per channel. |
Use Scenario: 4–20 mA loop-powered transmitter conditioning RTD bridge output in factory automation node. IC Role / Device Role / Timing Role: Precision instrumentation amplifier input stage (with external matched resistors) rejecting common-mode noise on long cables. Use Value: 70 dB CMRR at DC ensures <0.5% error from 2 V cable noise; −40°C to +85°C rating supports unheated enclosures. |
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 |
|---|---|---|---|
| MCP6001T-E/OT | Higher supply current (100 µA), lower GBW (1 MHz), same SC70-5 package. | Better for higher-speed filtering but reduces battery life by >10× in always-on sensing. | Select when bandwidth >500 kHz is required and power budget allows >10× higher quiescent draw. |
| TLV851DBVR | Lower supply current (420 nA), lower GBW (8.5 kHz), same SC70-5 footprint. | Optimized for ultra-low-power wake-up circuits but insufficient for active filtering above 1 kHz. | Select only for sub-1 kHz DC-coupled amplification where nanoamp bias dominates system power. |
Compared with MCP6001T-E/OT and TLV851DBVR, LPV321M7/NOPB uniquely balances 152 kHz bandwidth, 9 µA supply current, and rail-to-rail output in SC70 - making it the optimal choice for portable instrumentation requiring both speed and multi-year battery life.
Availability
LPV321M7/NOPB is available at Aetrix Electronics and suitable for portable medical devices, battery-powered data loggers, and industrial sensor transmitters requiring stable component supply, long-lifecycle assurance, and consistent SC70 packaging.
Supply support for LPV321M7/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 specializing in analog and embedded processing technologies, with decades of expertise in precision op-amps and low-power signal chain solutions.
LPV321M7/NOPB belongs to TI's LPV3xx-N micropower op-amp family, designed specifically for cost-sensitive, space-constrained, battery-operated applications demanding rail-to-rail output, ground-sensing inputs, and guaranteed 2.7 V operation.
FAQ
What is the maximum capacitive load the LPV321M7/NOPB can drive without oscillation?
The LPV321M7/NOPB is stable driving up to 200 pF in unity-gain configuration, as verified in TI's SNOS413E datasheet Section 7.4.1. This eliminates need for isolation resistors in typical LCD bias, DAC output buffering, or low-frequency sensor interfaces. For loads exceeding 200 pF, external compensation (e.g., RISO + CL) is required per Figure 37.
Does the LPV321M7/NOPB support true single-supply operation with input signals at ground?
Yes. The LPV321M7/NOPB features an input common-mode voltage range extending to −0.2 V (below ground) and up to V+ − 0.8 V, enabling direct connection to grounded sensors like thermistors or bridge transducers without level-shifting circuitry - a key capability confirmed in Section 6.5 and 6.7 of the LPV321M7/NOPB datasheet.
What is the typical input-referred voltage noise of the LPV321M7/NOPB at 1 kHz?
The LPV321M7/NOPB exhibits 146 nV/√Hz input-referred voltage noise at 1 kHz under 5 V supply conditions, as specified in Section 6.8 of the SNOS413E datasheet. This value is measured with V+ = 5 V, V− = 0 V, and TA = 25°C - making it suitable for low-frequency sensor amplification where noise below 10 kHz dominates system error.
Is the LPV321M7/NOPB pin-compatible with other SC70-5 op-amps like the TLV2371 or MCP6001?
Yes - the LPV321M7/NOPB uses standard SC70-5 pinout (IN+, V−, IN−, OUT, V+), matching TLV2371IDBVR and MCP6001T-E/OT. However, electrical behavior differs significantly: LPV321M7/NOPB draws 9 µA vs. 1 µA for TLV2371 and 100 µA for MCP6001, and offers 152 kHz GBW versus 1 MHz for MCP6001. Pinout compatibility does not imply functional interchangeability.
What is the guaranteed output voltage swing for the LPV321M7/NOPB at 3.3 V supply?
At 3.3 V supply, the LPV321M7/NOPB guarantees output swing within 3.5 mV of V+ and 90 mV of V− when loaded with 100 kΩ, per Section 6.7 of the datasheet. This translates to 0.09 V to 3.2965 V usable range - delivering >97% of full-scale dynamic range for 3.3 V ADC systems, critical for maximizing resolution in portable data acquisition.
LPV321M7/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- SC-70-5
LPV321M7/NOPB FAQ
1.How can I place an order for LPV321M7/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV321M7/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 LPV321M7/NOPB reliable?
The price and inventory of LPV321M7/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV321M7/NOPB is usually 5 days.
3.What payment methods are accepted for LPV321M7/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV321M7/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV321M7/NOPB?
LPV321M7/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV321M7/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 LPV321M7/NOPB?
For technical support, including LPV321M7/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV321M7/NOPB requirements.
6.How does Aetrix verify that LPV321M7/NOPB is sourced from the original manufacturer or authorized distributors?
All LPV321M7/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 LPV321M7/NOPB meets industry standards.
7.What is the process for return or replacement of LPV321M7/NOPB?
All LPV321M7/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LPV321M7/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 LPV321M7/NOPB part is unused and in its original packaging.
Return procedure for LPV321M7/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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