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Texas Instruments LMC6044IMX/NOPB
- Part No.:
- LMC6044IMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6044IMX/NOPB.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:18,276
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Product details
Overview
LMC6044IMX/NOPB from Texas Instruments is a quad-channel, micropower CMOS operational amplifier optimized for ultra-low-input-current, single-supply battery-powered systems. It delivers 2 fA typical input bias current, 10 µA/amp quiescent supply current, rail-to-rail output swing (to within 30 mV of rails at 15 V), and operates from 4.5 V to 15 V single supply - enabling precision signal conditioning in pH-probe buffers and photodiode preamplifiers.
For engineers reviewing the LMC6044IMX/NOPB datasheet, LMC6044IMX/NOPB pinout, LMC6044IMX/NOPB application, or LMC6044IMX/NOPB equivalent, key selection criteria include verified input leakage performance at temperature, guaranteed rail-to-rail output drive into 25 kΩ loads, common-mode input range extending to ground, and SOIC-14 package thermal resistance (RθJA = 115 °C/W) for low-power embedded sensor interfaces.
Technical Context
The LMC6044IMX/NOPB uses TI's double-poly silicon-gate CMOS process to achieve 2 fA input bias current and insensitivity to latch-up - critical for high-impedance transducer front-ends. Its internal compensation enables stable operation with capacitive loads up to 1 nF when using external pull-up resistors or feedback network tuning.
It supports true single-supply operation with input common-mode voltage spanning from ground to (V+) − 2.3 V and output swing from 0.007 V to (V+) − 0.03 V (at V+ = 15 V, RL = 100 kΩ), eliminating need for external pulldown resistors in battery-monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel count | Quad - enables compact multi-sensor signal chains without board-level duplication. |
| Input bias current | 2 fA typical - preserves signal integrity in >1 TΩ impedance sources like pH electrodes and piezoelectric sensors. |
| Supply current per channel | 10 µA - allows four independent amplifiers to operate continuously on coin-cell batteries for years. |
| Rail-to-rail output | Swings to within 30 mV of both rails at 15 V - maximizes dynamic range in single-supply 0–15 V systems. |
| Input common-mode range | Includes ground (0 V) and extends to (V+) − 2.3 V - supports direct interfacing to grounded transducers. |
| Gain bandwidth product | 100 kHz - sufficient for DC–10 kHz sensor signals including smoke detector analog front-ends. |
| Quiescent current (total) | 65 µA typical at 5 V - measured across all four channels, enabling ultra-low standby power. |
Pinout & Package
LMC6044IMX/NOPB is housed in a 14-pin SOIC (D package) with 1.27 mm pitch, 8.65 mm × 3.91 mm body, and JEDEC MS-012AC footprint. Thermal resistance is RθJA = 115 °C/W, suitable for convection-cooled industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | OUT A/B/C/D | Independent buffered outputs - each capable of sourcing/sinking ≥16 mA (V+ = 5 V) for driving ADC inputs or LED indicators. |
| 2, 6, 9, 13 | −IN A/B/C/D | Inverting inputs - matched to +IN pins for precision differential gain; require guard rings in high-Z layouts. |
| 3, 5, 10, 12 | +IN A/B/C/D | Noninverting inputs - accept common-mode voltages down to ground; enable unity-gain buffer configurations. |
| 4 | V+ | Positive supply rail - accepts 4.5 V to 15 V; decoupling capacitor required within 1 cm for stability. |
| 11 | V− | Negative supply rail - tied to ground in single-supply mode; must be low-impedance return path. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 2 fA typical - enables accurate measurement of nanoamp-level photocurrents without offset drift. |
| Rail-to-rail output stage | Drives to within 30 mV of supply rails - eliminates level-shifting circuitry in 3.3 V or 5 V microcontroller interfaces. |
| Ground-sensing input | Common-mode range includes 0 V - allows direct connection to grounded thermistors or bridge transducers. |
| Single-supply operation | 4.5 V to 15 V range - supports wide battery chemistries (Li-ion, alkaline, NiMH) without regulation overhead. |
| High input impedance | >10 TΩ - prevents loading of high-Z sources such as glass pH electrodes and electret microphones. |
Applications
| Portable pH Probe Buffer | Photodiode Preamp |
|---|---|
Use Scenario: Signal conditioning for glass electrode-based pH meters powered by CR2032 coin cells. IC Role / Device Role / Timing Role: High-impedance unity-gain buffer isolating electrode from ADC input while preserving mV-level accuracy. Use Value: 2 fA input bias ensures <0.1 mV error over 12-month field deployment; 65 µA total quiescent current enables >5-year battery life. |
Use Scenario: Amplifying weak photocurrents from IR detectors in portable gas analyzers. IC Role / Device Role / Timing Role: Transimpedance amplifier with guarded input and 10 MΩ feedback resistor. Use Value: Input leakage below 1 fA prevents dark-current-induced baseline shift; rail-to-rail output drives 12-bit SAR ADC directly. |
| Battery Voltage Monitor | Piezoelectric Charge Amplifier |
Use Scenario: Precision monitoring of Li-ion cell voltage during low-power sleep cycles in wearables. IC Role / Device Role / Timing Role: Resistor-divider buffer feeding MCU ADC, rejecting common-mode noise from switching regulators. Use Value: CMRR ≥66 dB ensures <1 LSB error despite 100 mV ripple on shared VDD rail; operates down to 4.5 V cutoff. |
Use Scenario: Converting charge output from vibration sensors in predictive maintenance nodes. IC Role / Device Role / Timing Role: Integrator with FET-input topology and guarded feedback capacitor. Use Value: Input bias current <4 pA (max, −40°C to +85°C) prevents drift in low-frequency (<1 Hz) structural health monitoring waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher input bias current (1 pA typ), 125 µA/amp supply current, 2.5 MHz GBW | Better AC performance but unsuitable for sub-pA leakage-critical pH or piezo sensors | Select when bandwidth >100 kHz is required and input impedance >100 GΩ suffices |
| OPA4316IPWR | Lower input bias current (0.2 pA typ), 100 µA/amp supply current, rail-to-rail I/O, 10 MHz GBW | Superior speed and noise, but higher power prevents multi-year battery operation | Prefer for portable instruments needing fast settling (e.g., handheld spectrometers) with rechargeable power |
Compared with TLV2464IDR and OPA4316IPWR, the LMC6044IMX/NOPB uniquely balances femtoamp input leakage, micropower consumption, and rail-to-rail output in a quad SOIC - making it irreplaceable for decade-scale deployments in unattended environmental sensors.
Availability
LMC6044IMX/NOPB is available at Aetrix Electronics and suitable for battery monitoring, portable analytic instruments, and fire- and smoke-detection systems requiring stable component supply across extended production lifecycles.
Supply support for LMC6044IMX/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 specializing in analog and embedded processing technologies, with decades of heritage in precision op-amps and low-power signal chain solutions.
The LMC604x family was designed specifically for ultra-low-power, high-impedance sensor interface applications - targeting portable medical devices, environmental monitors, and industrial transducer systems where femtoamp leakage and microwatt operation are mandatory.
FAQ
What is the maximum operating temperature range for LMC6044IMX/NOPB?
The LMC6044IMX/NOPB is specified for operation from –40°C to +85°C ambient temperature. Electrical characteristics including input offset voltage drift (1.3 µV/°C), input bias current (±4 pA max), and output swing are guaranteed across this full industrial range - critical for outdoor smoke detectors and automotive cabin air quality sensors.
Does LMC6044IMX/NOPB support dual-supply operation?
Yes, LMC6044IMX/NOPB supports dual-supply operation from ±2.25 V to ±7.75 V. The datasheet specifies performance under both single-supply (4.5 V to 15 V) and dual-supply conditions, with identical input common-mode range (including ground) and rail-to-rail output swing - enabling reuse in lab-grade instrumentation with bipolar supplies.
Can LMC6044IMX/NOPB drive capacitive loads directly?
LMC6044IMX/NOPB can drive up to 100 pF directly without oscillation; for larger capacitive loads (e.g., 1 nF LCD bias networks), TI recommends adding a series resistor (e.g., 20 Ω) between output and load or using a pull-up resistor to V+ as shown in Figure 6-3 of the datasheet - preserving phase margin while maintaining DC accuracy.
What is the typical input offset voltage for LMC6044IMX/NOPB?
The typical input offset voltage for LMC6044IMX/NOPB is ±1 mV at 25°C, with a maximum of ±3.3 mV over the full –40°C to +85°C temperature range. This low offset enables accurate DC-coupled amplification in pH probe buffers and strain gauge bridges without external trimming.
Is LMC6044IMX/NOPB pin-compatible with other LMC604x variants?
No - LMC6044IMX/NOPB uses a 14-pin SOIC package with dedicated pins for four independent amplifiers, while LMC6042 uses an 8-pin SOIC and LMC6041 uses an 8-pin SOIC. Pinouts are not compatible across channel counts; PCB layout must match the specific variant's pin mapping in Table 4-3 of the datasheet.
LMC6044IMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMC®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 0.02V/µs
- Gain Bandwidth Product:
- 100 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.002 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 52µA (x4 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 15.5 V
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LMC6044IMX/NOPB FAQ
1.How can I place an order for LMC6044IMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6044IMX/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 LMC6044IMX/NOPB reliable?
The price and inventory of LMC6044IMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6044IMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6044IMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6044IMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6044IMX/NOPB?
LMC6044IMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6044IMX/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 LMC6044IMX/NOPB?
For technical support, including LMC6044IMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6044IMX/NOPB requirements.
6.How does Aetrix verify that LMC6044IMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6044IMX/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 LMC6044IMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6044IMX/NOPB?
All LMC6044IMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6044IMX/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 LMC6044IMX/NOPB part is unused and in its original packaging.
Return procedure for LMC6044IMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMC6044IMX/NOPB Tags
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LM358DT
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LM358DR
Texas Instruments
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