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Texas Instruments LMC6442AIMX/NOPB
- Part No.:
- LMC6442AIMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6442AIMX/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,169
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Product details
Overview
LMC6442AIMX/NOPB from Texas Instruments is a dual micropower rail-to-rail output operational amplifier optimized for single-supply battery-powered systems. It delivers 0.95 µA/amplifier supply current, 9.5 kHz gain-bandwidth product, and output swing within 30 mV of both rails at 2.2 V supply-enabling precision signal conditioning in smoke detectors and portable instrumentation.
For engineers reviewing the LMC6442AIMX/NOPB datasheet, LMC6442AIMX/NOPB pinout, LMC6442AIMX/NOPB application, or LMC6442AIMX/NOPB equivalent, this page provides verified technical context, real-world design meaning for key specs, package-validated pin functions, and two confirmed alternative op-amps with documented functional trade-offs.
Technical Context
The LMC6442AIMX/NOPB employs CMOS input stage architecture delivering 5 fA typical input bias current and rail-to-rail output swing via complementary output transistors. Its internal compensation ensures stability at closed-loop gains ≥+2 or ≤−1 without external components.
It operates across 1.8 V to 11 V supply range with guaranteed performance at 2.2 V, 5 V, and 10 V. Input common-mode range extends from −0.3 V to (V+ − 0.9 V), supporting ground-sensing configurations in single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 0.95 µA per amplifier at 2.2 V - enables >10-year battery life in low-duty-cycle CO detectors. |
| Output Swing | Within 30 mV of V+ and V− at 2.2 V - preserves dynamic range in Li-ion or dual-alkaline powered sensors. |
| Gain-Bandwidth Product | 9.5 kHz at 2.2 V - supports DC–1 kHz signal paths in thermostats and occupancy sensors. |
| Input Bias Current | 5 fA typical - minimizes voltage error across high-impedance pH or gas sensor electrodes. |
| Input Voltage Range | −0.3 V to (V+ − 0.9 V) - allows direct ground-referenced input in single-supply front-ends. |
| Operating Temp Range | −40°C to +85°C - qualified for industrial and automotive cabin ambient environments. |
| Package | SOIC-8 (D0008A) - industry-standard footprint compatible with automated SMT assembly. |
Pinout & Package
LMC6442AIMX/NOPB is housed in an 8-pin SOIC package (JEDEC MS-012 variation AA, TI package code D0008A), 3.91 mm × 4.90 mm body size, 1.75 mm max height, with 1.27 mm lead pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node accepting differential signal; supports T-network feedback for high-Z inverting gain stages. |
| 2 | Non-Inverting Input (Amplifier A) | Accepts ground-referenced or biased input; common-mode range includes V− for true single-supply operation. |
| 3 | Output (Amplifier A) | Rail-to-rail capable output driving up to 300 pF capacitive load with external compensation. |
| 4 | V− (Ground/Supply Return) | Reference node for single-supply operation; must be low-impedance to minimize noise coupling. |
| 5 | Non-Inverting Input (Amplifier B) | Independent input for second channel; identical electrical specs to Pin 2. |
| 6 | Inverting Input (Amplifier B) | Independent input for second channel; identical electrical specs to Pin 1. |
| 7 | Output (Amplifier B) | Second rail-to-rail output; usable in dual-channel sensor signal chains or active filtering. |
| 8 | V+ (Positive Supply) | Accepts 1.8 V–11 V; supply current remains stable across voltage range, critical for aging battery operation. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 0.95 µA/amplifier at 2.2 V enables >5-year shelf life in battery-backed fire alarms. |
| Rail-to-rail output | Swing within 30 mV of both rails at 2.2 V maximizes ADC input utilization in 8-bit microcontroller systems. |
| Ultra-low input bias current | 5 fA typical prevents leakage-induced offset in high-resistance gas sensor bridges (>10 MΩ). |
| Stable at AV ≥ +2 or AV ≤ −1 | No external compensation required for standard non-inverting/inverting gain configurations. |
| Unity-gain capable with RC network | External CC/RC compensation enables stable AV = +1 operation and 300 pF capacitive load drive. |
Applications
| Smoke/Gas Detectors | Portable Instrumentation |
|---|---|
|
Use Scenario: Amplifying low-level current from electrochemical CO or NO2 sensor cells into measurable voltage for ADC sampling. IC Role / Device Role / Timing Role: Precision DC-coupled transimpedance amplifier with ultra-low input bias current and rail-to-rail output. Use Value: 5 fA input bias avoids sensor polarization errors; 0.95 µA supply current extends 2xAA battery life beyond 7 years in standby mode. |
Use Scenario: Signal conditioning front-end in handheld multimeters or pH meters requiring high input impedance and low power. IC Role / Device Role / Timing Role: Dual-channel buffer and gain stage for analog sensor inputs and reference voltage scaling. Use Value: Dual configuration reduces board space vs. discrete op-amps; rail-to-rail output ensures full-scale use of 3.3 V ADC reference. |
| Thermostats | Occupancy Sensors |
|
Use Scenario: Amplifying millivolt-level output from thermistor or RTD networks in HVAC control units. IC Role / Device Role / Timing Role: Low-drift, micropower difference amplifier for temperature delta measurement. Use Value: ±3 mV input offset and 0.4 µV/°C drift ensure <±0.5°C accuracy over −25°C to +70°C operating range. |
Use Scenario: Conditioning weak AC signals from PIR motion detector elements before envelope detection. IC Role / Device Role / Timing Role: High-gain, low-noise amplifier stage with bandwidth tailored to 0.1–10 Hz human motion spectrum. Use Value: 9.5 kHz GBWP supports clean amplification without phase shift; 170 nV/√Hz input noise maintains SNR >60 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Higher supply current (55 µA/amplifier); wider GBWP (6.4 MHz); no guaranteed 2.2 V operation. | Better for higher-speed sensor interfaces but unsuitable for multi-year battery life requirements. | Select when bandwidth >100 kHz is needed and supply >2.7 V is available. |
| LPV521MG/NOPB | Lower supply current (322 nA/amplifier); lower GBWP (6.5 kHz); single-channel only. | Extends battery life further but requires two devices for dual-channel needs and lacks rail-to-rail output swing at low VDD. | Select for ultra-long-life single-channel applications where dual functionality is not required. |
Compared with TLV2462IDR and LPV521MG/NOPB, the LMC6442AIMX/NOPB uniquely balances sub-1 µA/amplifier consumption, guaranteed 2.2 V operation, dual-channel integration, and rail-to-rail output-making it the only option qualified for decade-long battery life in dual-sensor smoke detectors.
Availability
LMC6442AIMX/NOPB is available at Aetrix Electronics and suitable for smoke/gas detectors, portable instrumentation, and thermostats requiring stable component supply, long-lifecycle assurance, and RoHS-compliant SOIC packaging.
Supply support for LMC6442AIMX/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 company specializing in analog and embedded processing technologies, with over 50 years of op-amp design heritage and broad industrial qualification standards.
The LMC6442AIMX/NOPB belongs to TI's micropower precision op-amp product line, engineered specifically for ultra-low-power, single-supply sensor signal conditioning in safety-critical and battery-constrained applications.
FAQ
What is the minimum supply voltage for reliable operation of the LMC6442AIMX/NOPB?
The LMC6442AIMX/NOPB is fully specified and ensured for operation down to 1.8 V, with guaranteed performance-including rail-to-rail output swing and 0.95 µA/amplifier supply current-at 2.2 V. Below 1.8 V, functionality is not characterized, and output swing degrades significantly.
Can the LMC6442AIMX/NOPB drive capacitive loads without oscillation?
Yes-the LMC6442AIMX/NOPB can drive up to 300 pF capacitive loads stably when configured in unity-gain mode with the recommended external RC compensation network (Figure 35 in the datasheet). At gains ≥+2, it remains stable without compensation.
Does the LMC6442AIMX/NOPB support true ground-sensing input configurations?
Yes-the LMC6442AIMX/NOPB features an input common-mode voltage range extending to −0.3 V (below V−) and up to (V+ − 0.9 V), enabling direct connection of sensor bridges or thermistors to ground while maintaining CMRR >67 dB.
What is the thermal resistance (θJA) of the LMC6442AIMX/NOPB in its SOIC-8 package?
The LMC6442AIMX/NOPB in SOIC-8 (D0008A) package has a thermal resistance θJA of 193°C/W when soldered to a standard JEDEC 2-layer test board, as specified in the Operating Ratings table of the datasheet.
Is the LMC6442AIMX/NOPB pin-compatible with other members of the LMC6442 family?
Yes-the LMC6442AIMX/NOPB shares identical pinout, package (SOIC-8), and electrical specifications with LMC6442IMX/NOPB and LMC6442AIM/NOPB; only the temperature grade (AI = −40°C to +85°C) and packaging format (tape-and-reel) differ.
LMC6442AIMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMC®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.0041V/µs
- Gain Bandwidth Product:
- 10.5 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.005 pA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 1.9µA (x2 Channels)
- Current - Output / Channel:
- 2.1 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMC6442AIMX/NOPB FAQ
1.How can I place an order for LMC6442AIMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6442AIMX/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 LMC6442AIMX/NOPB reliable?
The price and inventory of LMC6442AIMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6442AIMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6442AIMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6442AIMX/NOPB transactions.
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4.How is shipping managed for LMC6442AIMX/NOPB?
LMC6442AIMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6442AIMX/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 LMC6442AIMX/NOPB?
For technical support, including LMC6442AIMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6442AIMX/NOPB requirements.
6.How does Aetrix verify that LMC6442AIMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6442AIMX/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 LMC6442AIMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6442AIMX/NOPB?
All LMC6442AIMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6442AIMX/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 LMC6442AIMX/NOPB part is unused and in its original packaging.
Return procedure for LMC6442AIMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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