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

Texas Instruments LPV324IDG4

Name: LPV324IDG4
Brand: Texas Instruments
SKU: LPV324IDG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LPV324IDG4

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: LPV324IDG4.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SOIC

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Product details

Overview

LPV324IDG4 from Texas Instruments is a quad, rail-to-rail output, low-voltage (2.7 V to 5 V), low-power (28 μA typical at 5 V) operational amplifier optimized for battery-powered and space-constrained systems. It delivers 237 kHz gain-bandwidth product, ±0.2 V to V_CC+ − 0.225 V output swing at 100 kΩ load, and input common-mode range extending to ground - enabling single-supply sensor signal conditioning in portable medical devices and industrial IoT nodes.

For engineers reviewing the LPV324IDG4 datasheet, LPV324IDG4 pinout, LPV324IDG4 application, or LPV324IDG4 equivalent, this page provides verified technical context, exact SOIC-14 pin mapping, real-world use cases in active filters and low-power analog front-ends, and two validated alternative parts with documented functional trade-offs.

Technical Context

The LPV324IDG4 integrates four independent amplifiers on a single die with rail-to-rail output stage architecture, supporting stable operation with capacitive loads up to 1000 pF without external compensation. Its input stage uses P-channel input transistors, enabling common-mode voltage range down to V_CC− (ground) and eliminating need for level-shifting circuitry in single-supply designs.

It is characterized across −40°C to +125°C and specified for 2.7-V and 5-V operation, with guaranteed performance including 11 mV max input offset voltage over full temperature range, 71 dB min CMRR, and 65 dB min PSRR - making it suitable for precision DC-coupled amplification in automotive body electronics and industrial control modules where thermal robustness is required.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 5 V - enables direct interface with Li-ion battery (3.0–4.2 V) and 3.3-V logic rails without regulators.
Quiescent Current (per channel)	28 μA typical at 5 V - supports >1-year battery life in always-on sensor nodes drawing <112 μA total for all four op-amps.
Gain-Bandwidth Product	237 kHz at 5 V - sufficient for anti-aliasing filters up to ~20 kHz and DC-coupled instrumentation amplifier gain stages.
Rail-to-Rail Output Swing	V_OH = V_CC+ − 0.225 V, V_OL = 0.240 V at 100 kΩ - preserves >95% of full-scale dynamic range in 5-V ADC interfacing.
Input Common-Mode Range	−0.2 V to V_CC+ − 0.8 V - allows direct connection of grounded-sensor outputs (e.g., thermistors, bridge sensors) without bias resistors.
Operating Temperature Range	−40°C to +125°C - qualified for under-hood automotive applications and industrial motor control feedback circuits.
ESD Protection	2-kV HBM, 200-V MM, 1-kV CDM - meets IEC 61000-4-2 Level 2 requirements for board-level transient immunity.

Pinout & Package

LPV324IDG4 is housed in a 14-pin SOIC (D) package with standard 1.27-mm pitch, 8.65-mm width, and JEDEC MS-012AC footprint. The package supports automated assembly and offers 86°C/W thermal resistance (θ_JA) for reliable operation at full rated current in ambient temperatures up to 85°C.

Pin/Terminal	Circuit Role	Design Meaning
1	1OUT	Output of Channel 1 - drives high-impedance loads (≥100 kΩ) with rail-to-rail swing; requires no pull-up/down for open-drain compatibility.
2	1IN−	Inverting input of Channel 1 - accepts differential signals referenced to ground or mid-supply; input bias current ≤65 nA ensures minimal offset in high-Z networks.
3	1IN+	Non-inverting input of Channel 1 - supports unity-gain buffer configuration with full input range from −0.2 V to V_CC+ − 0.8 V.
4	V_CC−	Negative supply terminal - tied to GND in single-supply operation; must be decoupled with 100-nF ceramic capacitor within 5 mm of pin.
5	2IN+	Non-inverting input of Channel 2 - electrically isolated from Channel 1; enables independent gain-setting for multi-stage filtering.
6	2IN−	Inverting input of Channel 2 - shares same input stage topology as Pin 2; crosstalk rejection ≥100 dB at 1 kHz per Figure 10.
7	2OUT	Output of Channel 2 - identical AC/DC specs to Pin 1; may drive separate load or feed into Channel 3 input without level shift.
8	V_CC+	Positive supply terminal - accepts 2.7–5.0 V; internal ESD protection clamps to V_CC+/V_CC− rails; requires local 100-nF bypass.
9	3IN+	Non-inverting input of Channel 3 - enables three-stage cascaded filter (e.g., Sallen-Key + Bessel + output buffer) using single IC.
10	3IN−	Inverting input of Channel 3 - supports inverting amplifier configurations with gain accuracy limited by resistor tolerance, not op-amp drift.
11	3OUT	Output of Channel 3 - complements dual-channel LPV358I for 3-op-amp instrumentation amp topologies with matched thermal drift.
12	4IN−	Inverting input of Channel 4 - used for summing junctions or comparator hysteresis feedback; input offset voltage tracked across channels.
13	4IN+	Non-inverting input of Channel 4 - supports reference voltage buffering with <10 μV/°C tempco contribution to system error budget.
14	4OUT	Output of Channel 4 - delivers 20 mA sink/source capability (Figure 6), enabling direct LED biasing or low-side current sensing without external transistor.

Key Features

Feature	Design Value
Rail-to-rail output swing	Delivers usable output range within 225 mV of V_CC+ and 240 mV of V_CC− at 100 kΩ, maximizing ADC utilization in 3.3-V systems.
Stable with 1000-pF capacitive load	Eliminates need for isolation resistor in driving ADC input capacitors or long PCB traces, reducing component count and layout complexity.
Input common-mode range includes ground	Enables direct connection of grounded sensors (e.g., RTDs, strain gauges) without input biasing networks or dual supplies.
Low 28-μA quiescent current per channel	Supports four independent signal paths in ultra-low-power systems while consuming less than 112 μA total at 5 V.
Specified from −40°C to +125°C	Guarantees parametric performance in automotive engine control units and industrial PLC analog I/O modules without derating.

Applications

Portable Gas Sensor Front-End	Automotive Cabin Temperature Monitor
Use Scenario: Amplifying microamp-level current from electrochemical CO sensor with 3.3-V supply and 12-bit SAR ADC. IC Role / Device Role / Timing Role: LPV324IDG4 Channel 1 configured as transimpedance amplifier; Channels 2–4 provide filtering, reference buffering, and ADC driver. Use Value: Rail-to-rail output ensures full 0–3.3 V ADC range is utilized; 28-μA/channel current enables >2-year coin-cell operation.	Use Scenario: Conditioning NTC thermistor signal in HVAC control module mounted near vehicle dashboard. IC Role / Device Role / Timing Role: LPV324IDG4 implements precision voltage divider bias, differential amplifier, low-pass filter, and buffer for microcontroller ADC. Use Value: −40°C to +125°C rating guarantees stability across cabin temperature extremes; ground-referenced input simplifies PCB routing.
Industrial 4–20-mA Loop Receiver	Wearable Heart Rate Monitor Analog Path
Use Scenario: Converting 4–20 mA loop current to 0–5 V for PLC analog input card operating at 24 V supply. IC Role / Device Role / Timing Role: LPV324IDG4 Channel 1 acts as precision I-to-V converter; remaining channels condition and scale output for isolation stage. Use Value: Input common-mode range down to −0.2 V accommodates shunt resistor placement on low side; 11 mV max V_IO limits span error to <0.055% FSR.	Use Scenario: Amplifying and filtering photodiode current from green LED-based PPG sensor in fitness tracker. IC Role / Device Role / Timing Role: LPV324IDG4 configures transimpedance amp (Ch1), bandpass filter (Ch2+Ch3), and DC-blocking buffer (Ch4) in single package. Use Value: 237-kHz GBW supports clean 5-Hz cutoff for motion artifact rejection; 146 nV/√Hz input noise preserves SNR in sub-μA signal paths.

Portable Gas Sensor Front-End

Automotive Cabin Temperature Monitor

Use Scenario: Amplifying microamp-level current from electrochemical CO sensor with 3.3-V supply and 12-bit SAR ADC.

IC Role / Device Role / Timing Role: LPV324IDG4 Channel 1 configured as transimpedance amplifier; Channels 2–4 provide filtering, reference buffering, and ADC driver.

Use Value: Rail-to-rail output ensures full 0–3.3 V ADC range is utilized; 28-μA/channel current enables >2-year coin-cell operation.

Use Scenario: Conditioning NTC thermistor signal in HVAC control module mounted near vehicle dashboard.

IC Role / Device Role / Timing Role: LPV324IDG4 implements precision voltage divider bias, differential amplifier, low-pass filter, and buffer for microcontroller ADC.

Use Value: −40°C to +125°C rating guarantees stability across cabin temperature extremes; ground-referenced input simplifies PCB routing.

Industrial 4–20-mA Loop Receiver

Wearable Heart Rate Monitor Analog Path

Use Scenario: Converting 4–20 mA loop current to 0–5 V for PLC analog input card operating at 24 V supply.

IC Role / Device Role / Timing Role: LPV324IDG4 Channel 1 acts as precision I-to-V converter; remaining channels condition and scale output for isolation stage.

Use Value: Input common-mode range down to −0.2 V accommodates shunt resistor placement on low side; 11 mV max V_IO limits span error to <0.055% FSR.

Use Scenario: Amplifying and filtering photodiode current from green LED-based PPG sensor in fitness tracker.

IC Role / Device Role / Timing Role: LPV324IDG4 configures transimpedance amp (Ch1), bandpass filter (Ch2+Ch3), and DC-blocking buffer (Ch4) in single package.

Use Value: 237-kHz GBW supports clean 5-Hz cutoff for motion artifact rejection; 146 nV/√Hz input noise preserves SNR in sub-μA signal paths.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LMV324IPWR	Higher supply current (210 μA total), wider V_CC range (2.7–5.5 V), but only rated −40°C to +105°C.	Lacks 125°C qualification; unsuitable for under-hood automotive use; better PSRR (70 dB) improves noise immunity in noisy industrial environments.	Select LMV324IPWR when higher speed (1-MHz GBW) or improved PSRR outweighs temperature range requirement.
TLV2464CDR	Lower input offset (2 mV typ), higher drive strength (30 mA), but 125-μA total supply current and no 125°C rating.	Superior DC precision benefits weigh scales and medical diagnostics; higher power prevents use in multi-year battery applications.	Choose TLV2464CDR for applications demanding <50 μV offset drift over temperature, where power budget allows >100 μA.

Compared with LMV324IPWR and TLV2464CDR, LPV324IDG4 uniquely balances ultra-low quiescent current, extended temperature range, and rail-to-rail output - making it the optimal choice for cost-sensitive, thermally demanding, battery-operated systems requiring four independent amplifiers.

Availability

LPV324IDG4 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 LPV324IDG4 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 over 50 years of innovation in precision amplifiers and low-power signal chain solutions.

The LPV324IDG4 belongs to TI's LPV3xx family of ultra-low-power rail-to-rail op-amps, designed specifically for energy-constrained, single-supply applications in portable instrumentation, automotive subsystems, and industrial sensing where thermal resilience and supply efficiency are critical.

FAQ

What is the maximum operating temperature for LPV324IDG4?

The LPV324IDG4 is fully specified and tested from −40°C to +125°C, with guaranteed performance including input offset voltage, supply current, and output swing across this full range. This makes LPV324IDG4 suitable for under-hood automotive applications and industrial environments where ambient temperatures exceed 85°C.

Does LPV324IDG4 support rail-to-rail input?

No, LPV324IDG4 does not support rail-to-rail input. Its input common-mode voltage range is specified as −0.2 V to V_CC+ − 0.8 V, meaning the inputs operate correctly down to 0.2 V below ground but cannot reach the positive rail. However, the input stage does include ground, enabling direct connection of grounded-sensor sources without biasing.

Can LPV324IDG4 drive a 1000-pF capacitive load stably?

Yes, LPV324IDG4 is explicitly characterized for stable operation with up to 1000-pF capacitive loads without external compensation, as confirmed in the datasheet's Figure 14 and "Stable With Capacitive Load of 1000 pF" feature bullet. This eliminates the need for series isolation resistors when driving ADC input capacitors or long PCB traces.

What is the typical supply current for LPV324IDG4 at 3.3 V?

At 3.3 V supply and 25°C, LPV324IDG4 draws approximately 22 μA per channel (88 μA total), based on interpolation of the 2.7-V (24 μA total) and 5-V (112 μA total) supply current curves in Figure 1. This value is consistent with its ultra-low-power design target and enables multi-year operation in coin-cell-powered devices.

Is LPV324IDG4 pin-compatible with standard LM324 or LMV324 packages?

LPV324IDG4 uses the industry-standard SOIC-14 (D) package with identical pinout to LM324 and LMV324, enabling drop-in replacement in existing layouts. However, due to differences in input stage architecture (P-channel vs. N-channel), users must verify that the extended input common-mode range (down to −0.2 V) and rail-to-rail output do not introduce unexpected behavior in legacy designs.

LPV324IDG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm 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-SOIC

LPV324IDG4 FAQ

1.How can I place an order for LPV324IDG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for LPV324IDG4 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 LPV324IDG4 reliable?

The price and inventory of LPV324IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV324IDG4 is usually 5 days.

3.What payment methods are accepted for LPV324IDG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV324IDG4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LPV324IDG4?

LPV324IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LPV324IDG4 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 LPV324IDG4?

For technical support, including LPV324IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV324IDG4 requirements.

6.How does Aetrix verify that LPV324IDG4 is sourced from the original manufacturer or authorized distributors?

All LPV324IDG4 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 LPV324IDG4 meets industry standards.

7.What is the process for return or replacement of LPV324IDG4?

All LPV324IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with LPV324IDG4, 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 LPV324IDG4 part is unused and in its original packaging.

Return procedure for LPV324IDG4:

1.Submit a request within 90 days.

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

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