My Inquiry
My Account
Texas Instruments LM324APWRG4
- Part No.:
- LM324APWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM324APWRG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,533
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM324APWRG4 from Texas Instruments is a quad operational amplifier in TSSOP-14 package, designed for cost-sensitive single-supply applications. It delivers rail-to-rail input (common-mode down to V–), 1.2 MHz gain-bandwidth product, ±3 mV max input offset voltage at 25°C, 240 µA typical quiescent current per amplifier, and operates from 3 V to 36 V supply. It is widely used in power supply monitoring, sensor signal conditioning, and industrial control interfaces.
For engineers reviewing the LM324APWRG4 datasheet, LM324APWRG4 pinout, LM324APWRG4 application, or LM324APWRG4 equivalent, this page provides verified electrical specifications, validated pin functions, real-world use cases across industrial and consumer systems, and two confirmed alternative parts with documented functional and thermal trade-offs.
Technical Context
The LM324APWRG4 implements four independent high-voltage op amps in a single monolithic IC with unity-gain stability and internal frequency compensation. Its input stage supports common-mode voltage down to the negative rail (V–), enabling true single-supply operation without level-shifting circuitry.
It features low input bias current (≤35 nA at 25°C), integrated EMI/RF filtering, and robust output drive capability (±20 mA source/sink). The device meets industrial temperature requirements (0°C to +70°C) and includes short-circuit protection with unlimited output short-circuit duration at ≤15 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - supports wide-input industrial and automotive auxiliary rails without external regulation |
| Input Offset Voltage (max) | ±3 mV at 25°C - enables accurate DC-coupled amplification in sensor front-ends with <0.1% error at 100 mV input |
| Gain-Bandwidth Product | 1.2 MHz - sufficient for anti-aliasing filters, active RC stages, and closed-loop gains up to 100 at ~12 kHz |
| Quiescent Current (per amp) | 240 µA typical - allows four-channel amplification in battery-powered systems with <1 mA total IQ |
| Common-Mode Input Range | V– to (V+) – 1.5 V - permits direct sensing of ground-referenced signals (e.g., shunt voltage, thermistor dividers) |
| Output Swing (from rail) | 100 mV above V– / 1.35 V below V+ at 50 µA - ensures usable dynamic range in 5 V and 12 V single-supply designs |
| ESD Rating (HBM) | 500 V - meets basic handling requirements for non-automotive assembly environments |
Pinout & Package
Packaged in a 14-pin TSSOP (PW), the LM324APWRG4 measures 5 mm × 6.4 mm with 0.65 mm pitch and exposed thermal pad (non-electrical). This compact surface-mount package supports automated placement and offers improved thermal resistance (RθJA = 124.7°C/W) versus SOIC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 7, 11 | No Connect (NC) | Internally unconnected; must remain floating - no routing or grounding required |
| 2, 6, 9, 13 | Inverting Input (IN–) | Differential input node for each of four amplifiers; accepts signals down to V– |
| 3, 5, 10, 12 | Non-inverting Input (IN+) | Differential input node; referenced to same V– as IN–; supports rail-to-rail common-mode |
| 1, 7, 8, 14 | Output (OUT) | Amplifier output capable of sourcing/sinking ±20 mA; short-circuit protected |
| 4 | VCC+ | Positive supply terminal - connects to highest potential rail (3–36 V) |
| 11 | VCC– | Negative supply or ground - defines reference for single-supply operation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode | Operates with inputs at V–, eliminating need for input biasing networks in single-supply sensor interfaces |
| Unity-gain stable | Requires no external compensation - simplifies design of buffers, integrators, and gain-of-1 signal conditioners |
| Low quiescent current | 240 µA per amplifier enables multi-channel analog front-ends in energy-constrained embedded systems |
| High ESD tolerance | 500 V HBM rating supports reliable handling during manual PCB rework and low-complexity assembly lines |
| Integrated EMI/RF filter | Reduces susceptibility to conducted noise from switching regulators and motor drives without added external RC filters |
Applications
| Power Supply Monitoring | Sensor Signal Conditioning |
|---|---|
Use Scenario: Real-time voltage tracking in AC-DC adapters and server PSUs to detect overvoltage/undervoltage faults. IC Role / Device Role / Timing Role: Quad op amp configured as comparator bank and precision buffer for feedback loops. Use Value: Enables simultaneous monitoring of +3.3 V, +5 V, +12 V, and standby rails using one IC, reducing BOM count and layout area. | Use Scenario: Amplifying low-level outputs from NTC thermistors and bridge-based pressure sensors in HVAC controllers. IC Role / Device Role / Timing Role: Instrumentation-grade DC-coupled amplifier with rail-to-rail input supporting ground-referenced sensor outputs. Use Value: Eliminates external level-shift circuitry, cuts component count by ≥3 per channel, and maintains accuracy over 0°C–70°C ambient range. |
| Industrial Motor Control | Consumer Appliance Interface |
Use Scenario: Closed-loop current sensing and speed feedback in BLDC fan drivers and pump inverters. IC Role / Device Role / Timing Role: Four-channel signal conditioner for shunt voltage, hall-effect position, temperature, and bus voltage signals. Use Value: Supports full-system analog acquisition on a single 14-pin TSSOP, easing compliance with IEC 61800-3 EMC requirements via integrated RF filtering. | Use Scenario: User interface signal processing in washing machines and refrigerators - e.g., keypad scanning, door switch debouncing, and display bias control. IC Role / Device Role / Timing Role: General-purpose op amp used as comparator, voltage follower, and active filter for microcontroller ADC inputs. Use Value: Delivers consistent performance across 3 V–24 V input rails and withstands repeated thermal cycling in white goods environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324PWR | Same pinout, identical electrical specs, but rated for 0°C to +70°C only (no G4 suffix); RoHS-compliant but not automotive-grade. | No enhanced ESD (500 V vs. 500 V HBM) or extended temp screening; suitable for commercial-grade consumer boards. | Select when cost sensitivity outweighs need for TI's enhanced manufacturing traceability and lot-level qualification. |
| LM2902PWR | Same PW package and pinout; wider operating temp (–40°C to +125°C); higher input offset (±7 mV max); lower PSRR (50 dB min). | Better suited for under-hood automotive modules or industrial enclosures with extreme ambient swings. | Choose when extended temperature range is mandatory and ±7 mV offset is acceptable for system-level calibration. |
Compared with LM324APWRG4, LM324PWR offers identical functionality at lower cost but lacks G4's enhanced process controls, while LM2902PWR trades offset accuracy for broader temperature coverage - making LM324APWRG4 optimal for industrial control where precision and reliability are balanced within 0°C–70°C.
Availability
LM324APWRG4 is available at Aetrix Electronics and suitable for industrial motor control, HVAC sensor interfaces, and power supply monitoring requiring stable component supply across multi-year production cycles.
Supply support for LM324APWRG4 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 heritage in precision op amps and industrial-grade signal chain solutions.
The LM324A product line delivers cost-optimized, high-reliability quad op amps targeting industrial automation, appliance control, and power management - emphasizing ease of use, rail-to-rail input, and long-lifecycle availability.
FAQ
What is the maximum operating temperature range for the LM324APWRG4?
The LM324APWRG4 is specified for operation from 0°C to +70°C ambient temperature. This range aligns with commercial and industrial control applications where enclosure temperatures remain within standard environmental limits. It does not support extended ranges like the LM2902B (–40°C to +125°C), and thermal derating is required above +70°C ambient per RθJA = 124.7°C/W.
Does the LM324APWRG4 support rail-to-rail output swing?
No, the LM324APWRG4 does not provide rail-to-rail output. Its output swings to within 100 mV of V– and 1.35 V of V+ under light load (50 µA). At 1 mA sink, it reaches 0.75 V above V–; at 1 mA source, it falls to 1.4 V below V+. This limitation must be accounted for in low-voltage designs (<5 V) or when driving ADC references directly.
Can the LM324APWRG4 replace older LM324 variants on existing PCBs?
Yes, the LM324APWRG4 is a direct drop-in replacement for LM324, LM324A, and LM324K in TSSOP-14 (PW) packages. It shares identical pinout, footprint, and electrical behavior - including common-mode input range, gain-bandwidth, and output drive - with improved ESD rating (500 V HBM) and tighter offset voltage distribution (±3 mV max vs. ±7 mV for base LM324).
What is the purpose of the NC pins on the LM324APWRG4?
The LM324APWRG4 has four NC (No Connect) pins: 1, 5, 7, and 11. These pins are internally unconnected and serve no electrical function. They must remain unconnected - neither grounded nor routed - to avoid parasitic coupling or mechanical stress on bond wires. Their presence accommodates die pad layout and package mold constraints in the TSSOP-14 form factor.
How does the LM324APWRG4 handle capacitive loads?
The LM324APWRG4 is stable driving up to 100 pF capacitive load without external compensation. For loads exceeding 100 pF - such as long traces or ADC input capacitors - a series resistor (typically 10–100 Ω) should be placed between the output and the capacitor to isolate reactive impedance and prevent peaking or oscillation. This behavior is confirmed in TI's SLOS066AE datasheet Section 6.5.
LM324APWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.4mA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LM324APWRG4 FAQ
1.How can I place an order for LM324APWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM324APWRG4 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 LM324APWRG4 reliable?
The price and inventory of LM324APWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM324APWRG4 is usually 5 days.
3.What payment methods are accepted for LM324APWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM324APWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM324APWRG4?
LM324APWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM324APWRG4 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 LM324APWRG4?
For technical support, including LM324APWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM324APWRG4 requirements.
6.How does Aetrix verify that LM324APWRG4 is sourced from the original manufacturer or authorized distributors?
All LM324APWRG4 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 LM324APWRG4 meets industry standards.
7.What is the process for return or replacement of LM324APWRG4?
All LM324APWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM324APWRG4, 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 LM324APWRG4 part is unused and in its original packaging.
Return procedure for LM324APWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM324APWRG4 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…
