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Texas Instruments LMV924MTX
- Part No.:
- LMV924MTX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMV924MTX.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,557
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Product details
Overview
LMV924MTX from Texas Instruments is a quad rail-to-rail input/output operational amplifier optimized for 1.8V operation, delivering 1MHz gain-bandwidth product, 145µA per amplifier supply current, and output swing within 100mV of rails into 600Ω at 1.8V - used in battery-powered portable instrumentation and signal conditioning circuits.
For engineers reviewing the LMV924MTX datasheet, LMV924MTX pinout, LMV924MTX application, or LMV924MTX equivalent, this page provides verified specifications, TSSOP-14 package mapping, real-world use cases in low-voltage analog front-ends, and two confirmed alternative quad op-amps with documented parameter trade-offs.
Technical Context
The LMV924MTX employs a complementary bipolar input stage (PNP+NPN) enabling rail-to-rail input common-mode range extending 300mV beyond supplies, with VOS crossover at ~1V below V+. Its output stage delivers ±27mA short-circuit current at 2.7V and drives 600Ω loads with minimal ringing.
It operates across 1.5V–5.0V supply range, achieves 70° phase margin at unity gain, and maintains 90dB open-loop gain into 600Ω load - enabling stable DC-coupled buffering and low-frequency amplification in single-supply systems without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.0V - supports direct connection to single-cell Li-ion (2.7–4.2V), alkaline (1.5V), or two-cell NiMH (2.4V) without regulation |
| Gain-Bandwidth Product | 1MHz - enables stable unity-gain buffering up to ~100kHz and closed-loop gain of 10 up to ~100kHz |
| Supply Current per Amplifier | 145µA typical at 1.8V - allows four channels to operate on <600µA total, critical for multi-channel battery-powered sensors |
| Input Offset Voltage (max) | 9.5mV - sets worst-case DC error floor in precision DC-coupled gain stages (e.g., sensor amplifiers) |
| Output Swing (600Ω load) | Within 100mV of rails at 1.8V - preserves full dynamic range in 1.8V ADC interfaces and rail-referenced comparators |
| Common-Mode Rejection Ratio | 60dB min - sufficient for moderate-noise environments like handheld medical monitors or industrial sensor nodes |
| Input Bias Current | 50nA max - permits use with high-impedance sources (e.g., pH electrodes, photodiode transimpedance feedback) without excessive offset |
Pinout & Package
TSSOP-14 surface-mount package (4.4mm × 5.0mm × 1.2mm), rated for −40°C to +85°C junction temperature, with θJA = 155°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amp A) | Accepts differential input signal for first amplifier channel; requires matched impedance for optimal CMRR |
| 2 | Non-Inverting Input (Amp A) | Reference point for single-ended or differential input configuration; bias current flows here |
| 3 | Output (Amp A) | Delivers rail-to-rail output voltage; capable of sourcing/sinking ≥27mA at 2.7V supply |
| 4 | GND | Power and signal reference plane; must be low-impedance connection to minimize noise coupling between channels |
| 5 | Non-Inverting Input (Amp B) | Independent input for second amplifier; shares no internal nodes with Amp A |
| 6 | Inverting Input (Amp B) | Differential partner to Pin 5; pin order follows standard TSSOP op-amp layout convention |
| 7 | Output (Amp B) | Second independent output; amp-to-amp isolation >140dB prevents crosstalk in multi-channel filters |
| 8 | V+ | Positive supply rail; decoupling capacitor (0.1µF ceramic) required within 5mm for stability |
| 9 | Output (Amp C) | Third output channel; identical AC/DC specs to Amp A/B; usable for 3-op-amp instrumentation amps |
| 10 | Inverting Input (Amp C) | Input for third amplifier; pinout symmetry simplifies PCB routing in multi-stage designs |
| 11 | Non-Inverting Input (Amp C) | Reference input for Amp C; same VCM range (−0.3V to 5.35V at 5V supply) as other channels |
| 12 | Non-Inverting Input (Amp D) | Fourth amplifier input; enables full quad functionality without external duplication |
| 13 | Inverting Input (Amp D) | Final differential input pair; all four amplifiers share same process and matching characteristics |
| 14 | Output (Amp D) | Fourth output; supports independent signal paths - e.g., simultaneous sensor conditioning and supply monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 300mV beyond supply rails - enables direct sensing of signals referenced to ground or V+ in single-supply systems |
| 1.8V-optimized architecture | Guaranteed 1MHz GBW and 145µA/amplifier current at 1.8V - eliminates need for voltage boosting in ultra-low-power designs |
| Capacitive load drive capability | Stable with up to 1000pF load - reduces need for external isolation resistors in ADC driver or filter applications |
| High DC open-loop gain | 100dB typical - ensures <0.1% gain error in precision non-inverting configurations with Rf/Rg ≤ 1000 |
| Low input bias current | 12nA typical - minimizes offset voltage generation in high-impedance transducer interfaces (e.g., thermopiles, piezoelectrics) |
| Amp-to-amp isolation | 140dB - prevents signal leakage between channels in multi-sensor data acquisition systems |
Applications
| Battery Monitoring Circuit | Portable Medical Sensor Front-End |
|---|---|
Use Scenario: Real-time measurement of cell voltage and current in single/dual-cell Li-ion packs during charging and discharge cycles. IC Role / Device Role / Timing Role: Quad amplifier configured as two differential voltage monitors (Amp A/B), one current-sense amplifier (Amp C), and one comparator reference buffer (Amp D). Use Value: Rail-to-rail I/O enables full 0–4.2V measurement range without level-shifting; 145µA/channel extends battery life in always-on monitoring mode. |
Use Scenario: Signal conditioning for ECG, pulse oximetry, or glucose sensor outputs in handheld diagnostic devices. IC Role / Device Role / Timing Role: First-stage gain and filtering (Amp A/B), active low-pass anti-aliasing (Amp C), and reference voltage buffering (Amp D) in a compact analog front-end. Use Value: 1MHz bandwidth supports >100Hz physiological signals; 1.8V operation matches modern ultra-low-power microcontrollers and ADCs. |
| PCMCIA Card Analog Interface | Industrial Temperature Transmitter |
Use Scenario: Analog signal routing and level adaptation for legacy PCMCIA cards requiring 3.3V or 5V interface compatibility in laptops and PDAs. IC Role / Device Role / Timing Role: Quad buffer isolating host processor GPIOs from external analog sensors, with rail-to-rail swing preserving signal integrity across varying supply voltages. Use Value: Guaranteed 2.7V/5V specs allow seamless operation across PCMCIA power domains; TSSOP-14 footprint fits tight card-edge layouts. |
Use Scenario: 4–20mA loop transmitter conditioning thermistor or RTD inputs in factory automation modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier (3x LMV924 channels), cold-junction compensation buffer, and loop-driver interface amplifier. Use Value: 9.5mV max VOS meets Class B accuracy requirements for 0.1°C temperature resolution; 155°C/W θJA supports convection-cooled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad low-voltage operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9004IDR | Higher 1MHz GBW but 600µA/amplifier supply current; rail-to-rail I/O; 0.3mV max VOS | Better DC precision and speed, but 4× higher quiescent current limits battery life in always-on systems | Choose TLV9004IDR when VOS <1mV and GBW margin are critical, and power budget allows >2.4mA total |
| MCP6004-E/ST | Lower 1µA/amplifier supply current but only 1kHz GBW; rail-to-rail I/O; 4.5mV max VOS | Superior battery longevity but insufficient bandwidth for audio or fast sensor signals (>1kHz) | Choose MCP6004-E/ST for multi-day sensor logging where signal bandwidth <100Hz and µA-level current is mandatory |
Compared with TLV9004IDR and MCP6004-E/ST, LMV924MTX uniquely balances 1MHz bandwidth, 145µA/amplifier current, and rail-to-rail operation - making it optimal for portable instrumentation requiring both responsiveness and multi-day battery runtime.
Availability
LMV924MTX is available at Aetrix Electronics and suitable for battery monitoring, portable medical sensors, PCMCIA analog interfaces, and industrial temperature transmitters requiring stable component supply across extended production lifecycles.
Supply support for LMV924MTX 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 90 years of innovation in precision analog ICs and power management solutions.
The LMV924MTX belongs to TI's low-voltage rail-to-rail op-amp product line, designed specifically for energy-constrained portable electronics and single-supply industrial signal chains operating down to 1.8V.
FAQ
What is the maximum operating supply voltage for LMV924MTX?
The LMV924MTX has an absolute maximum supply voltage rating of 5.5V, but its guaranteed operational range is 1.5V to 5.0V. At 5.0V, it delivers 4.84V minimum output swing into 600Ω, 104dB large-signal voltage gain, and 98mA sourcing capability - making LMV924MTX suitable for mixed-signal systems powered by regulated 5V rails while maintaining rail-to-rail functionality.
Does LMV924MTX support true rail-to-rail input at 1.8V supply?
Yes, LMV924MTX supports rail-to-rail input with common-mode voltage range from −0.3V to 2.15V at 1.8V supply - extending 300mV beyond both rails. This allows direct interfacing with signals referenced to ground or V+ in single-cell Li-ion (2.7–4.2V) and two-cell alkaline (3.0V) systems, and is confirmed in the 1.8V DC Electrical Characteristics table of the SNOS436H datasheet.
Can LMV924MTX drive a 1000pF capacitive load stably?
Yes, LMV924MTX is characterized to drive up to 1000pF capacitive loads with minimal ringing in unity-gain follower configuration, as stated in the Applications section and Figure 52 of the SNOS436H datasheet. For heavier loads, a 10–100Ω isolation resistor between output and capacitance restores stability without degrading DC accuracy - a design technique validated in TI's application note.
What is the thermal resistance (θJA) of the LMV924MTX TSSOP-14 package?
The LMV924MTX in TSSOP-14 package has a specified junction-to-ambient thermal resistance (θJA) of 155°C/W, measured under JEDEC-standard conditions with soldered mounting on a 2-layer PCB. This value enables reliable operation up to +85°C ambient when dissipating ≤32mW per amplifier (145µA × 1.8V × 4), confirmed in the Operating Ratings table of SNOS436H.
How does the input stage architecture of LMV924MTX affect distortion performance?
LMV924MTX uses a complementary PNP/NPN input stage causing VOS crossover ~1V below V+, which introduces input-crossover distortion for large signals spanning that region. To avoid distortion, TI recommends limiting input swing to 0–1V below V+ or using inverting configurations - guidance directly derived from the "Input and Output Stage" section and Figure 9–11 in SNOS436H.
LMV924MTX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.45V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 12 nA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 750µA
- Current - Output / Channel:
- 75 mA
- Voltage - Supply Span (Min):
- 1.5 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LMV924MTX FAQ
1.How can I place an order for LMV924MTX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV924MTX 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 LMV924MTX reliable?
The price and inventory of LMV924MTX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV924MTX is usually 5 days.
3.What payment methods are accepted for LMV924MTX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV924MTX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV924MTX?
LMV924MTX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV924MTX 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 LMV924MTX?
For technical support, including LMV924MTX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV924MTX requirements.
6.How does Aetrix verify that LMV924MTX is sourced from the original manufacturer or authorized distributors?
All LMV924MTX 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 LMV924MTX meets industry standards.
7.What is the process for return or replacement of LMV924MTX?
All LMV924MTX units undergo pre-shipment inspection (PSI). If there is an issue with LMV924MTX, 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 LMV924MTX part is unused and in its original packaging.
Return procedure for LMV924MTX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV924MTX Tags
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