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Texas Instruments LPV324MTX/NOPB
- Part No.:
- LPV324MTX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LPV324MTX/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,741
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Product details
Overview
LPV324MTX/NOPB from Texas Instruments is a quad, 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), −40°C to +85°C operating temperature, and rail-to-rail output swing of V+ −3.5 mV / V− + 90 mV at 100 kΩ load - enabling precision signal conditioning in portable medical sensors and handheld instrumentation.
For engineers reviewing the LPV324MTX/NOPB datasheet, LPV324MTX/NOPB pinout, LPV324MTX/NOPB application, or LPV324MTX/NOPB equivalent, key selection criteria include micropower consumption per channel, input common-mode range extending to V−, capacitive-load stability up to 200 pF, and SOIC-14/TSSOP-14 package compatibility with space-constrained PCB layouts.
Technical Context
The LPV324MTX/NOPB uses a bipolar input and output stage fabricated on TI's submicron BiCMOS process, delivering improved noise performance (146 nV/√Hz at 1 kHz, 5 V) and higher output current drive (±16 mA short-circuit) versus CMOS-only micropower op amps. Its rail-to-rail output stage operates down to 100 kΩ loads without crossover distortion, while the input common-mode voltage range spans −0.2 V to V+ − 0.8 V - supporting ground-sensing in single-supply configurations.
It functions as a unity-gain-stable, internally compensated voltage amplifier with 0.1 V/µs slew rate and 87° phase margin at 5 V. The device supports both single-supply (2.7–5 V) and split-supply operation, and tolerates direct capacitive loading up to 200 pF in unity-gain follower configuration without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5 V - ensures full functionality across depleted alkaline or Li-ion battery discharge curves. |
| Total Supply Current | 28 µA (typ) at 25°C, 5 V - enables >1-year battery life in always-on sensor nodes powered by CR2032. |
| Gain-Bandwidth Product | 152 kHz - supports stable closed-loop gain ≥10 up to ~15 kHz for anti-aliasing or sensor amplification. |
| Rail-to-Rail Output Swing | V+ −3.5 mV / V− + 90 mV at 100 kΩ - maximizes dynamic range in 3.3 V systems, preserving >99% of full-scale ADC input range. |
| Input Offset Voltage | 1.5 mV (max) at 25°C, 5 V - limits DC error to <0.05% of 3 V full scale in precision DC-coupled front-ends. |
| Input Common-Mode Range | −0.2 V to V+ − 0.8 V - allows direct sensing of signals referenced to ground in single-supply systems. |
| Capacitive Load Drive | Stable with ≤200 pF in unity-gain - eliminates need for isolation resistors when driving ADC input caps or long traces. |
Pinout & Package
LPV324MTX/NOPB is available in 14-pin SOIC (D) and TSSOP (PW) packages. Both share identical pinout: 4 independent op amp sections (A–D), each with noninverting input (+IN), inverting input (−IN), and output (OUT); shared V+ (pin 4) and V− (pin 11).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 12 | +IN A, +IN B, +IN C, +IN D | Noninverting inputs for channels A–D; accept signals from −0.2 V to V+ − 0.8 V. |
| 2, 6, 9, 13 | −IN A, −IN B, −IN C, −IN D | Inverting inputs for channels A–D; match +IN voltage range and bias current (2 nA typ). |
| 1, 7, 8, 14 | OUT A, OUT B, OUT C, OUT D | Amplified outputs; swing within 3.5 mV of V+ and 90 mV of V− into 100 kΩ. |
| 4 | V+ | Positive supply rail; must be ≥2.7 V and ≤5 V; decoupling capacitor required near pin. |
| 11 | V− | Negative supply rail; typically GND in single-supply use; connects to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 28 µA total quiescent current enables multi-year battery life in wireless sensor transmitters. |
| Rail-to-Rail Output | Delivers full output voltage swing in low-voltage systems, maximizing SNR for 10–12-bit ADCs. |
| Ground-Sensing Input | Input common-mode includes V− (GND), allowing direct interfacing with 0 V–referenced transducers. |
| Capacitive Load Stability | Operates stably with 200 pF directly on output - simplifies filtering and reduces component count. |
| Bipolar Input Stage | Provides lower input voltage noise (146 nV/√Hz) and higher output drive vs CMOS micropower op amps. |
Applications
| Portable ECG Front-End | Smart Sensor Signal Chain |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in battery-powered wearable ECG monitors. IC Role / Device Role / Timing Role: Quad-channel instrumentation amplifier first stage (two channels as diff-amp, two as buffers), providing DC-coupled gain with minimal power overhead. Use Value: 28 µA total supply current extends CR2032 battery life beyond 18 months; rail-to-rail output drives 3.3 V SAR ADC without level-shifting. | Use Scenario: Conditioning analog outputs from MEMS accelerometers, temperature sensors, and gas detectors in IIoT edge nodes. IC Role / Device Role / Timing Role: Multi-function signal conditioner - one channel for sensor excitation, two for differential amplification, one for reference buffering. Use Value: −40°C to +85°C rating ensures reliability in uncontrolled environments; 152 kHz GBW supports anti-aliasing filters up to 10 kHz. |
| Low-Power Active Filter | Handheld Test Equipment |
Use Scenario: Implementing 2nd-order low-pass filtering (fc = 1.5 kHz) in portable oscilloscope probes and multimeter analog front-ends. IC Role / Device Role / Timing Role: Unity-gain stable Sallen-Key topology amplifier with integrated R/C feedback network. Use Value: 200 pF capacitive load tolerance eliminates external isolation resistors; 0.1 V/µs slew rate prevents distortion on 1 kHz sine waves. | Use Scenario: Providing programmable gain, offset correction, and output buffering in handheld LCR meters and insulation testers. IC Role / Device Role / Timing Role: Precision DC-coupled signal path manager - one channel for autoranging, one for calibration reference, two for measurement channels. Use Value: 1.5 mV max input offset ensures <0.1% absolute accuracy in 3 V full-scale measurements; SOIC-14 footprint fits compact 4-layer PCBs. |
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/channel), wider GBW (6.4 MHz), rail-to-rail I/O, but no ground-sensing input (VCM starts at V− + 0.2 V). | Not suitable for true ground-referenced sensor interfaces; better for higher-speed AC-coupled signal paths. | Select TLV2464IDR only if bandwidth >1 MHz is required and input cannot go below V− + 0.2 V. |
| LMV324IDR | Higher supply current (250 µA/channel), same SOIC-14 package, rail-to-rail output, but input VCM limited to V− + 0.2 V to V+ − 0.2 V. | Lacks ground-sensing capability; unsuitable for DC-coupled transducer interfaces requiring VCM = 0 V. | Choose LMV324IDR only for cost-sensitive, non-ground-sensing applications where power >250 µA/channel is acceptable. |
Compared with TLV2464IDR and LMV324IDR, LPV324MTX/NOPB uniquely combines ground-sensing input, rail-to-rail output, and sub-30 µA total supply current - making it the only viable option for ultra-low-power, DC-coupled, single-supply sensor signal chains.
Availability
LPV324MTX/NOPB is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, and handheld test equipment requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for LPV324MTX/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 designing analog ICs, embedded processors, and digital signal solutions for industrial, automotive, and consumer markets.
LPV324MTX/NOPB belongs to TI's LPV3xx-N micropower op amp family, engineered specifically for cost-sensitive, battery-operated systems demanding rail-to-rail output, ground-sensing input, and sub-10 µA/channel quiescent current.
FAQ
What is the maximum capacitive load the LPV324MTX/NOPB can drive without external compensation?
The LPV324MTX/NOPB is unity-gain stable and can directly drive up to 200 pF on its output in a voltage-follower configuration without oscillation or excessive ringing. This is verified in the datasheet's Figure 22 and Section 7.4.1. Exceeding 200 pF requires isolation resistors or feed-forward compensation as shown in Figure 37 of the LPV324MTX/NOPB datasheet. For designs targeting ADC input capacitance or long PCB traces, this 200 pF rating simplifies layout and reduces BOM count.
Does the LPV324MTX/NOPB support true ground-referenced input signals?
Yes. The LPV324MTX/NOPB features an input common-mode voltage range that extends to V− − 0.2 V (typically 0 V in single-supply use), enabling direct connection of transducers or sensors whose output swings down to ground. This is confirmed in Section 6.5 (DC Electrical Characteristics – 2.7 V) and Section 7.3.7 of the LPV324MTX/NOPB datasheet. Unlike many micropower op amps, it does not require a negative rail or level-shifting circuit to handle 0 V–referenced signals.
What is the typical supply current of the LPV324MTX/NOPB at 3.3 V operation?
At 3.3 V and 25°C, the LPV324MTX/NOPB draws 28 µA total supply current for all four operational amplifiers - matching its specified value at 5 V. This is confirmed in Section 6.5 (DC Electrical Characteristics – 2.7 V) and Section 6.7 (DC Electrical Characteristics – 5 V), where IS is listed as 28 µA (typ) for LPV324-N across the full 2.7–5 V range. This consistent ultra-low current enables predictable battery-life calculations across the entire operating voltage window.
Can the LPV324MTX/NOPB be used in dual-supply configurations?
Yes. The LPV324MTX/NOPB supports dual-supply operation with ±1.35 V to ±2.5 V (i.e., total supply 2.7–5 V), as stated in Section 8.1. Its input common-mode range and rail-to-rail output swing remain functional with symmetric rails. However, the device is optimized for single-supply use: the input stage includes protection diodes referenced to V−, and the output swing specification (V− + 90 mV) assumes V− is at ground potential. Dual-supply use is valid but offers no performance advantage over single-supply in most LPV324MTX/NOPB applications.
What package options are available for the LPV324MTX/NOPB, and are they pin-compatible?
The LPV324MTX/NOPB is offered in two surface-mount packages: 14-pin SOIC (D) and 14-pin TSSOP (PW). Both share identical pinout, electrical characteristics, and thermal performance metrics (RθJA = 103.9°C/W for SOIC, 132.7°C/W for TSSOP). The TSSOP package has a smaller body size (5.00 mm × 4.40 mm vs. 8.65 mm × 3.91 mm), enabling higher board density. Layouts designed for either package can be adapted via footprint revision - no schematic or functional changes are needed when switching between LPV324MTX/NOPB SOIC and TSSOP variants.
LPV324MTX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-TSSOP
LPV324MTX/NOPB FAQ
1.How can I place an order for LPV324MTX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV324MTX/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 LPV324MTX/NOPB reliable?
The price and inventory of LPV324MTX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV324MTX/NOPB is usually 5 days.
3.What payment methods are accepted for LPV324MTX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV324MTX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV324MTX/NOPB?
LPV324MTX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV324MTX/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 LPV324MTX/NOPB?
For technical support, including LPV324MTX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV324MTX/NOPB requirements.
6.How does Aetrix verify that LPV324MTX/NOPB is sourced from the original manufacturer or authorized distributors?
All LPV324MTX/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 LPV324MTX/NOPB meets industry standards.
7.What is the process for return or replacement of LPV324MTX/NOPB?
All LPV324MTX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LPV324MTX/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 LPV324MTX/NOPB part is unused and in its original packaging.
Return procedure for LPV324MTX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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