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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments LPV324IPW

Name: LPV324IPW
Brand: Texas Instruments
SKU: LPV324IPW
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LPV324IPW

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: LPV324IPW.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14TSSOP

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Product details

Overview

LPV324IPW from Texas Instruments is a quad, rail-to-rail output, low-voltage (2.7 V to 5 V), low-power operational amplifier optimized for portable and space-constrained applications. It delivers 28 μA typical supply current per device (all four channels), 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 - enabling precision signal conditioning in battery-powered sensor interfaces and analog front-ends.

For engineers reviewing the LPV324IPW datasheet, LPV324IPW pinout, LPV324IPW application, or LPV324IPW equivalent, this page provides verified technical context, TSSOP-14 package mapping, real-world use cases in low-power active filters and portable instrumentation, and validated alternative options with documented functional trade-offs.

Technical Context

The LPV324IPW integrates four independent amplifiers sharing a common 2.7–5-V supply, each featuring input common-mode range extending to VCC− and rail-to-rail output stage capable of driving 100-kΩ loads with <±100 mV headroom. Its simplified internal schematic includes dedicated bias networks (VBIAS1–VBIAS4) and complementary input pairs ensuring no crossover distortion across the full temperature range.

It is stable with capacitive loads up to 1000 pF and characterized for operation from −40°C to +125°C, distinguishing it from the standard LPV324 (−40°C to +85°C). Input offset voltage is specified at 11 mV max over the full temperature range, and ESD protection exceeds JESD22-A114 (2 kV HBM), A115 (200 V MM), and C101 (1 kV CDM).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 5 V - supports single-cell Li-ion, two-cell alkaline, and 3.3-V system rails without level shifting.
Quiescent Current (All Channels)	28 μA typical at 5 V - enables multi-channel sensing in always-on, ultra-low-power systems (e.g., IoT node front-ends).
Gain-Bandwidth Product	152 kHz - sufficient for DC-coupled sensor amplification, anti-aliasing filtering, and slow-control-loop compensation.
Rail-to-Rail Output Swing	VCC+ − 3.5 mV / VCC− + 90 mV at 100-kΩ - maximizes dynamic range in low-voltage ADC driver stages.
Input Common-Mode Range	−0.2 V to VCC+ − 0.8 V - allows ground-referenced inputs and single-supply operation with input signals near GND.
Operating Temperature	−40°C to +125°C - qualified for under-hood automotive, industrial motor control, and high-ambient embedded systems.
Input Offset Voltage (max)	11 mV over −40°C to +125°C - sets baseline accuracy for DC-coupled transducer signal chains.

Pinout & Package

TSSOP-14 (PW) package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, thin-profile surface-mount design compatible with fine-pitch PCB assembly and thermal constraints in compact modules.

Pin/Terminal	Circuit Role	Design Meaning
1	1OUT	Output of Channel 1 - drives external load or next-stage input with rail-to-rail swing capability.
2	1IN−	Inverting input of Channel 1 - accepts feedback network or differential signal reference point.
3	1IN+	Non-inverting input of Channel 1 - connects to sensor, reference, or signal source with full common-mode range.
4	VCC+	Positive supply rail - shared by all four amplifiers; must be decoupled locally with 0.1-μF ceramic capacitor.
5	2IN+	Non-inverting input of Channel 2 - electrically isolated from Channel 1; supports independent signal paths.
6	2IN−	Inverting input of Channel 2 - used for unity-gain buffer, inverting amplifier, or comparator configuration.
7	2OUT	Output of Channel 2 - fully independent output stage; no crosstalk specification implies >100 dB rejection at 1 kHz.
8	VCC−	Ground/negative supply rail - serves as common return for all channels and must be low-impedance.
9	3OUT	Output of Channel 3 - identical performance to Channels 1 and 2; enables three-signal parallel processing.
10	3IN−	Inverting input of Channel 3 - supports multi-channel filter banks or simultaneous sensor conditioning.
11	3IN+	Non-inverting input of Channel 3 - referenced to same VCC− as other channels; no internal isolation required.
12	4IN+	Non-inverting input of Channel 4 - completes quad functionality; suitable for reference buffering or auxiliary gain stage.
13	4IN−	Inverting input of Channel 4 - configurable as summing node or precision comparator input.
14	4OUT	Output of Channel 4 - final channel output; maintains same slew rate (0.1 V/s) and noise floor as others.

Key Features

Feature	Design Value
Rail-to-rail output swing	Enables full utilization of 5-V ADC input range without external level-shifting circuitry.
28 μA total quiescent current	Reduces battery drain in multi-channel wearable sensors - extends runtime by >3× vs. standard LMV324.
Stable with 1000-pF capacitive load	Allows direct driving of long traces, RC filters, or ADC sample capacitors without external isolation resistors.
−40°C to +125°C operation	Eliminates derating or thermal monitoring in automotive cabin modules and industrial PLC I/O cards.
No crossover distortion	Preserves signal fidelity in audio preamps and precision DC-coupled instrumentation amplifiers.
JESD 78 Class II latch-up immunity	Ensures robustness against transient overvoltage events in noisy industrial environments.

Applications

Portable Gas Sensor Front-End	Automotive Cabin Temperature Monitor
Use Scenario: Amplifying low-level output (nA–μA) from electrochemical gas sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Quad LPV324IPW configures one channel as transimpedance amplifier, two as reference buffers, and one as comparator for threshold detection. Use Value: 28 μA total supply current enables >1-year battery life; rail-to-rail output ensures full-scale ADC digitization of 0–3.3 V sensor response.	Use Scenario: Conditioning signals from NTC thermistors mounted near HVAC ducts in vehicles operating from −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Each LPV324IPW channel conditions one thermistor bridge, providing buffered, filtered, and scaled analog outputs to MCU ADC. Use Value: Extended temperature rating eliminates need for external thermal derating; input common-mode range down to −0.2 V supports ground-referenced biasing.
Industrial 4–20 mA Loop Receiver	Low-Power Medical Pulse Oximeter Analog Front-End
Use Scenario: Converting 4–20 mA loop current into isolated 0–5 V voltage for PLC analog input modules in factory automation. IC Role / Device Role / Timing Role: One LPV324IPW channel acts as precision current-to-voltage converter; remaining channels provide filtering, gain, and reference buffering. Use Value: Low input bias current (≤50 nA) minimizes error in high-precision shunt-based conversion; 125°C rating supports enclosure mounting near motors/drives.	Use Scenario: Amplifying and filtering weak photodiode currents (pA–nA) from red/IR LEDs in battery-powered wearable pulse oximeters. IC Role / Device Role / Timing Role: Two LPV324IPW channels serve as synchronous TIA stages for red and IR paths; third provides reference stability; fourth enables LED drive control. Use Value: Ultra-low power enables continuous SpO₂ monitoring on CR2032; rail-to-rail output matches 3.3-V SAR ADC full scale without gain trimming.

Portable Gas Sensor Front-End

Automotive Cabin Temperature Monitor

Use Scenario: Amplifying low-level output (nA–μA) from electrochemical gas sensors powered by coin-cell batteries.

IC Role / Device Role / Timing Role: Quad LPV324IPW configures one channel as transimpedance amplifier, two as reference buffers, and one as comparator for threshold detection.

Use Value: 28 μA total supply current enables >1-year battery life; rail-to-rail output ensures full-scale ADC digitization of 0–3.3 V sensor response.

Use Scenario: Conditioning signals from NTC thermistors mounted near HVAC ducts in vehicles operating from −40°C to +125°C ambient.

IC Role / Device Role / Timing Role: Each LPV324IPW channel conditions one thermistor bridge, providing buffered, filtered, and scaled analog outputs to MCU ADC.

Use Value: Extended temperature rating eliminates need for external thermal derating; input common-mode range down to −0.2 V supports ground-referenced biasing.

Industrial 4–20 mA Loop Receiver

Low-Power Medical Pulse Oximeter Analog Front-End

Use Scenario: Converting 4–20 mA loop current into isolated 0–5 V voltage for PLC analog input modules in factory automation.

IC Role / Device Role / Timing Role: One LPV324IPW channel acts as precision current-to-voltage converter; remaining channels provide filtering, gain, and reference buffering.

Use Value: Low input bias current (≤50 nA) minimizes error in high-precision shunt-based conversion; 125°C rating supports enclosure mounting near motors/drives.

Use Scenario: Amplifying and filtering weak photodiode currents (pA–nA) from red/IR LEDs in battery-powered wearable pulse oximeters.

IC Role / Device Role / Timing Role: Two LPV324IPW channels serve as synchronous TIA stages for red and IR paths; third provides reference stability; fourth enables LED drive control.

Use Value: Ultra-low power enables continuous SpO₂ monitoring on CR2032; rail-to-rail output matches 3.3-V SAR ADC full scale without gain trimming.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad low-voltage op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LMV324IPW	Higher supply current (220 μA typical), wider input offset (±7 mV typ), same TSSOP-14 package and pinout.	Not rated for 125°C; unsuitable for under-hood or high-ambient industrial use.	Select when higher speed (1 MHz GBW) and lower offset outweigh power budget constraints.
TSV914IQDT	Lower input offset (1.5 mV max), higher GBW (8 MHz), but 80 μA supply current and only rated to 125°C with derated performance.	Requires layout changes due to different pinout (non-pin-compatible); higher cost per channel.	Choose for precision DC applications needing sub-mV offset where power is secondary to accuracy.

Compared with LMV324IPW, LPV324IPW reduces supply current by 87% while maintaining rail-to-rail output and extended temperature capability - making it optimal for energy-constrained designs. Against TSV914IQDT, LPV324IPW trades bandwidth and offset for 65% lower quiescent power and guaranteed 125°C operation without derating.

Availability

LPV324IPW is available at Aetrix Electronics and suitable for portable medical devices, automotive cabin electronics, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPV324IPW 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 amplifiers and low-power signal chain solutions.

The LPV324IPW belongs to TI's LPV3xx family of ultra-low-power rail-to-rail op-amps, designed specifically for battery-operated, space-constrained, and high-temperature applications where minimizing supply current without sacrificing basic precision is critical.

FAQ

What is the maximum operating temperature for LPV324IPW?

The LPV324IPW is characterized for continuous operation from −40°C to +125°C, confirmed in the official Texas Instruments SLOS433I datasheet Section "Recommended Operating Conditions". This extended rating distinguishes it from the standard LPV324 (−40°C to +85°C) and makes LPV324IPW suitable for under-hood automotive and industrial control applications where ambient temperatures exceed 85°C.

Does LPV324IPW support rail-to-rail input?

No, LPV324IPW does not support rail-to-rail input. Its input common-mode voltage range is specified as −0.2 V to VCC+ − 0.8 V, meaning the inputs operate down to 0.2 V below ground but cannot reach VCC+. However, the output is rail-to-rail, swinging within 3.5 mV of VCC+ and 90 mV of VCC− at 100-kΩ load - a key feature confirmed in the Electrical Characteristics tables for both 2.7-V and 5-V operation.

What is the typical supply current for LPV324IPW at 3.3 V?

While the datasheet specifies supply current at 2.7 V and 5 V, Figure 1 ("Supply Current vs Supply Voltage") shows LPV324 ICC (all channels) at approximately 22 μA at 3.3 V and 25°C. At 85°C, the curve indicates ~25 μA. This extrapolated value is consistent with the 28 μA typical rating at 5 V and confirms LPV324IPW's suitability for 3.3-V systems such as portable instrumentation and IoT edge nodes.

Is LPV324IPW pin-compatible with LPV324DR?

Yes, LPV324IPW (TSSOP-14, PW package) and LPV324DR (SOIC-14, D package) share identical pinout and electrical specifications. Both are quad op-amps with matching terminal assignments (1OUT, 1IN−, 1IN+, VCC+, etc.) and functionally interchangeable in layout - though mechanical footprint and thermal performance differ due to package type. This compatibility is explicitly confirmed in the "LPV324 . . . D OR PW PACKAGE (TOP VIEW)" diagram in the datasheet.

Can LPV324IPW drive a 10-nF capacitive load stably?

No - LPV324IPW is specified as stable only with capacitive loads up to 1000 pF (1 nF), as stated in the "Features" section and confirmed in Figures 14–15 (Frequency Response vs CL). Driving a 10-nF load risks oscillation or excessive overshoot. For larger capacitive loads, an external series resistor (e.g., 10–100 Ω) between LPV324IPW output and the capacitor is required to maintain phase margin above 71°.

LPV324IPW Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Tube

Product Status:: Obsolete

Amplifier Type:: General Purpose

Number of Circuits:: 4

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:: 28µA (x4 Channels)

Current - Output / Channel:: 72 mA

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:: 14-TSSOP

LPV324IPW FAQ

1.How can I place an order for LPV324IPW through Aetrix?

Please submit a Request for Quotation (RFQ) for LPV324IPW 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 LPV324IPW reliable?

The price and inventory of LPV324IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV324IPW is usually 5 days.

3.What payment methods are accepted for LPV324IPW?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV324IPW transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LPV324IPW?

LPV324IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LPV324IPW 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 LPV324IPW?

For technical support, including LPV324IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV324IPW requirements.

6.How does Aetrix verify that LPV324IPW is sourced from the original manufacturer or authorized distributors?

All LPV324IPW 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 LPV324IPW meets industry standards.

7.What is the process for return or replacement of LPV324IPW?

All LPV324IPW units undergo pre-shipment inspection (PSI). If there is an issue with LPV324IPW, 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 LPV324IPW part is unused and in its original packaging.

Return procedure for LPV324IPW:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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