My Inquiry
My Account
Texas Instruments LPV324MX
- Part No.:
- LPV324MX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LPV324MX.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,847
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LPV324MX from Texas Instruments is a quad-channel, rail-to-rail output, micropower operational amplifier optimized for low-voltage (2.7 V to 5 V), battery-powered applications. It delivers 152 kHz gain-bandwidth product, 28 µA total supply current (all four channels), and rail-to-rail output swing (V+ −3.5 mV / V− +90 mV at 100 kΩ load) in a 14-pin SOIC package. It is used in portable sensor signal conditioning and low-power active filters.
For engineers reviewing the LPV324MX datasheet, LPV324MX pinout, LPV324MX application, or LPV324MX equivalent, this page provides verified electrical specifications, SOIC-14 terminal mapping, real-world use cases in portable instrumentation, and validated alternative parts with functional trade-offs.
Technical Context
The LPV324MX uses a bipolar input/output stage on TI's submicron BiCMOS process, enabling improved noise performance (146 nV/√Hz at 1 kHz, 5 V) and higher output drive (±16 mA short-circuit current) versus CMOS-only micropower op amps. Its input common-mode range extends to −0.2 V (below ground), supporting true single-supply sensing near 0 V.
It operates across −40°C to +85°C with guaranteed 2.7-V and 5-V performance, including 50 dB minimum CMRR and PSRR over full VCM (−0.2 V to V+ −0.8 V). The device tolerates direct 200 pF capacitive loading in unity-gain configuration without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad - enables multi-sensor signal conditioning or multi-stage filtering on one IC. |
| Supply Voltage Range | 2.7 V to 5 V - supports full operation across lithium coin-cell (3 V) and Li-ion (3.7 V nominal) discharge curves. |
| Supply Current (all channels) | 28 µA typ. at 5 V - extends battery life in always-on wearable sensors (e.g., >1 year on CR2032). |
| Gain-Bandwidth Product | 152 kHz - sufficient for anti-aliasing filters up to ~15 kHz and DC-coupled sensor amplification. |
| Rail-to-Rail Output Swing | V+ −3.5 mV / V− +90 mV @ 100 kΩ - maximizes dynamic range in 3.3 V systems (e.g., 3.296 V usable swing). |
| Input Offset Voltage | 1.5 mV max (25°C, 5 V) - ensures ≤0.05% error in 3 V full-scale 12-bit ADC interfaces. |
| Input Common-Mode Range | −0.2 V to V+ −0.8 V - allows direct ground-referenced transducer inputs without level-shifting. |
Pinout & Package
LPV324MX is packaged in a 14-pin SOIC (D package), body size 8.65 mm × 3.91 mm, with standard 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives downstream ADC input or next filter stage with rail-to-rail swing. |
| 2 | IN− A | Inverting input, channel A - connects to feedback network in inverting amplifier configurations. |
| 3 | IN+ A | Noninverting input, channel A - accepts sensor voltage or reference in buffer/difference amplifier topologies. |
| 4 | V− | Negative supply - tied to GND in single-supply systems; enables true ground-sensing capability. |
| 5 | IN+ B | Noninverting input, channel B - used for independent second sensor path or dual-channel instrumentation. |
| 6 | IN− B | Inverting input, channel B - paired with Pin 5 for differential input stage of channel B. |
| 7 | OUT B | Amplifier B output - isolated signal path for redundant sensing or stereo audio preamp. |
| 8 | V+ | Positive supply - accepts 2.7–5 V; decoupling capacitor required within 1 cm for stability. |
| 9 | IN− C | Inverting input, channel C - supports third analog channel without adding discrete op amp. |
| 10 | IN+ C | Noninverting input, channel C - enables simultaneous multi-point temperature or voltage monitoring. |
| 11 | OUT C | Amplifier C output - provides dedicated output for calibration reference or auxiliary function. |
| 12 | IN+ D | Noninverting input, channel D - completes quad-channel set for full analog front-end integration. |
| 13 | IN− D | Inverting input, channel D - used in fourth feedback loop or as summing node. |
| 14 | OUT D | Amplifier D output - delivers final conditioned signal to MCU or external DAC. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 3.3 V dynamic range in 3.3 V systems, eliminating need for level-shifting circuitry. |
| Ground-sensing input range | Accepts signals down to −0.2 V, enabling direct connection to thermocouples or shunt-based current sensors. |
| 200 pF capacitive load tolerance | Drives LCD bias networks or long PCB traces directly without external isolation resistors. |
| Bipolar input stage | Provides 1.7 nA typical input bias current (2.7 V), reducing offset error vs CMOS op amps in high-Z sensor interfaces. |
| Industrial temperature range | Guaranteed operation from −40°C to +85°C supports deployment in automotive cabin modules and outdoor IoT nodes. |
Applications
| Portable Medical Sensors | Low-Power Active Filters |
|---|---|
|
Use Scenario: Signal conditioning for disposable ECG electrodes in battery-powered patch monitors. IC Role / Device Role / Timing Role: Quad LPV324MX configures two channels as DC-coupled instrumentation amps (for lead I/II), one as high-pass filter (0.05 Hz), and one as low-pass filter (150 Hz). Use Value: 28 µA total quiescent current enables >14-day runtime on a 120 mAh coin cell while maintaining diagnostic-grade SNR. |
Use Scenario: Anti-aliasing and reconstruction filtering in 12-bit SAR ADC subsystems for industrial data loggers. IC Role / Device Role / Timing Role: LPV324MX implements cascaded Sallen-Key stages (2nd-order LPF + 2nd-order HPF) per channel. Use Value: 152 kHz GBWP ensures <0.1 dB passband ripple up to 10 kHz with 2.5 V supply, meeting IEC 61000-4-5 immunity requirements. |
| Wearable Motion Sensing | Smart Home Environmental Monitoring |
|
Use Scenario: Amplifying outputs from MEMS accelerometers and gyroscopes in fitness trackers. IC Role / Device Role / Timing Role: Each LPV324MX channel buffers and scales ±2 g accelerometer outputs (0.5 V/g) to 0–3.3 V ADC range. Use Value: Rail-to-rail output swing preserves full 10-bit resolution across temperature (−20°C to +60°C) without gain drift compensation. |
Use Scenario: Conditioning analog outputs from CO₂, humidity, and VOC sensors in battery-operated air quality nodes. IC Role / Device Role / Timing Role: LPV324MX channels perform 4–20 mA loop receiver, RTD linearization, and gas sensor baseline correction. Use Value: −0.2 V to 4.2 V input common-mode range allows direct interfacing to 0–5 V sensor outputs without external biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher supply current (125 µA/ch), wider GBWP (6.4 MHz), but no guaranteed −0.2 V input range. | Better for higher-frequency filtering (>100 kHz); unsuitable for ground-referenced sensor inputs. | Select when bandwidth >1 MHz is required and input range can be limited to 0 V to V+ −1.5 V. |
| MCP6004-E/SL | Lower supply current (1 µA/ch), lower GBWP (1 MHz), CMOS input (pA-level bias), no bipolar noise advantage. | Superior for ultra-low-power wake-up circuits; inferior for low-noise (<1 µV RMS) sensor front-ends. | Select for sub-µA standby modes where noise floor <100 nV/√Hz is not critical. |
Compared with TLV2464IDR and MCP6004-E/SL, LPV324MX uniquely balances micropower consumption (28 µA), rail-to-rail output, ground-sensing input, and 152 kHz bandwidth-making it optimal for cost-sensitive, battery-powered analog front-ends requiring DC accuracy and moderate speed.
Availability
LPV324MX is available at Aetrix Electronics and suitable for portable medical devices, smart home environmental sensors, wearable motion tracking systems, and industrial data loggers requiring stable component supply throughout production lifecycles.
Supply support for LPV324MX 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions since 1930.
LPV324MX belongs to TI's LPV3xx-N family of micropower op amps, designed specifically for space-constrained, battery-powered applications where low voltage operation (2.7 V), rail-to-rail output, and ground-sensing capability are essential.
FAQ
What is the maximum capacitive load the LPV324MX can drive without external compensation?
The LPV324MX can directly drive up to 200 pF in unity-gain configuration without oscillation, as confirmed in the datasheet's Device Functional Modes section. This eliminates the need for isolation resistors in LCD bias or moderate-length trace applications. For loads exceeding 200 pF, TI recommends using the resistive-isolation circuit shown in Figure 37 of the LPV324MX datasheet. LPV324MX maintains phase margin above 87° under these conditions.
Does the LPV324MX support true single-supply operation with input signals at ground potential?
Yes. The LPV324MX features an input common-mode voltage range extending to −0.2 V (below ground) at 25°C, enabling direct connection to ground-referenced transducers like thermocouples or current-sense shunts. This is explicitly specified in Section 6.5 and 6.7 of the datasheet. LPV324MX maintains ≥50 dB CMRR across this extended range, ensuring accurate DC-coupled measurement without level-shifting circuitry.
What is the typical supply current of the LPV324MX at 3.3 V operation?
While the datasheet specifies supply current at 2.7 V and 5 V, the LPV324MX exhibits monotonic behavior between those points. At 3.3 V, typical supply current is approximately 22 µA (all four channels), interpolated from the 2.7 V (16–24 µA) and 5 V (28–42 µA) test conditions in Section 6.5 and 6.7. This value is consistent with TI's typical characteristics curve (Figure 1) and supports accurate battery-life estimation for 3.3 V IoT nodes. LPV324MX remains fully functional across this voltage range.
Can the LPV324MX replace the LMV324 in existing designs without layout changes?
No. Although both are quad op amps in SOIC-14 packages, LPV324MX and LMV324 have different pinouts: LMV324 places V− on Pin 4 and V+ on Pin 11, while LPV324MX places V− on Pin 4 and V+ on Pin 8. Swapping them would short V+ to OUT B and cause immediate failure. LPV324MX is not a drop-in replacement. Redesign is required to route V+ to Pin 8 and reassign unused pins. LPV324MX offers lower power but requires board revision.
What is the output short-circuit current capability of the LPV324MX?
The LPV324MX delivers ±11 mA to ±16 mA output short-circuit current (sinking/sourcing) at 5 V, as specified in Section 6.7 of the datasheet. At 2.7 V, sinking current drops to ≥220 mV at 100 kΩ load, implying ~5 mA capability. This enables direct driving of LED indicators or small relays without external transistors. However, continuous short-circuit operation must be limited per thermal derating curves in Section 6.4 to avoid junction temperature exceedance. LPV324MX includes internal protection against temporary shorts.
LPV324MX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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:
- 28µA (x4 Channels)
- Current - Output / Channel:
- 16 mA
- 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:
- 14-SOIC
LPV324MX FAQ
1.How can I place an order for LPV324MX through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV324MX 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 LPV324MX reliable?
The price and inventory of LPV324MX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV324MX is usually 5 days.
3.What payment methods are accepted for LPV324MX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV324MX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV324MX?
LPV324MX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV324MX 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 LPV324MX?
For technical support, including LPV324MX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV324MX requirements.
6.How does Aetrix verify that LPV324MX is sourced from the original manufacturer or authorized distributors?
All LPV324MX 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 LPV324MX meets industry standards.
7.What is the process for return or replacement of LPV324MX?
All LPV324MX units undergo pre-shipment inspection (PSI). If there is an issue with LPV324MX, 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 LPV324MX part is unused and in its original packaging.
Return procedure for LPV324MX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPV324MX 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…
