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Texas Instruments LMC6462AIM
- Part No.:
- LMC6462AIM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6462AIM.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:279
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Product details
Overview
LMC6462AIM from Texas Instruments is a dual micropower rail-to-rail input and output CMOS operational amplifier optimized for low-voltage, battery-powered systems. It delivers 20 μA/amplifier supply current, 0.25 mV input offset voltage, 85 dB CMRR at 5V, rail-to-rail output swing within 10 mV of rails (RL = 25 kΩ), and operates from 3.0 V to 15.5 V supply. It serves as precision signal conditioning front-end in portable medical sensors and transducer interfaces.
For engineers reviewing the LMC6462AIM datasheet, LMC6462AIM pinout, LMC6462AIM application, or LMC6462AIM equivalent, key selection considerations include ultra-low input bias current (150 fA), guaranteed 3V/5V operation, input common-mode range extending 0.2 V beyond rails, and thermal stability across −40°C to +85°C industrial temperature range.
Technical Context
The LMC6462AIM uses CMOS input stage architecture enabling rail-to-rail input common-mode voltage range (−0.2 V to V+ + 0.3 V) and ultra-low input current (150 fA typical). Its output stage supports rail-to-rail swing with sourcing/sinking capability up to ±30 mA and output resistance of 110 Ω (sourcing) / 83 Ω (sinking) at VS = 5 V.
It features 50 kHz gain-bandwidth product, 15 V/ms slew rate (VS = 5 V), and maintains 85 dB CMRR over full common-mode range (0 V ≤ VCM ≤ 5.0 V) at 5 V supply. Input-referred voltage noise is 80 nV/√Hz at 1 kHz, and it achieves 130 dB amp-to-amp isolation in dual configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 40 μA per amplifier (typical at 5 V); enables >1-year battery life in 10 μA-systems with coin-cell power. |
| Input Offset Voltage | 0.25 mV (max at 25°C, 5 V); ensures ≤2.5 mV output error at unity gain without trimming. |
| Input Bias Current | 150 fA (typical); supports high-impedance sensor interfaces (e.g., photodiodes, pH electrodes) without leakage-induced drift. |
| CMRR | 85 dB (min at 0–5 V common-mode, 5 V supply); rejects power-supply ripple and EMI in single-supply instrumentation. |
| Output Swing | Within 10 mV of rails (at RL = 25 kΩ, VS = 5 V); maximizes dynamic range in 3.3 V or 5 V ADC interfacing. |
| Gain-Bandwidth Product | 50 kHz (typical); sufficient for DC–10 kHz sensor signal conditioning with stable unity-gain compensation. |
| Operating Temperature | −40°C to +85°C; qualified for industrial-grade embedded monitoring and portable diagnostics equipment. |
Pinout & Package
LMC6462AIM is housed in an 8-pin SOIC package (Package Drawing D), with standard dual op-amp pinout compatible with industry layout practices. Thermal resistance θJA is 193°C/W, supporting operation up to 85°C ambient without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amp A) | High-impedance node (RIN >10 TΩ) accepting differential signals; guard ring routing required for <1 pA leakage. |
| 2 | Non-Inverting Input (Amp A) | Accepts rail-to-rail common-mode inputs (−0.2 V to 5.3 V at VS = 5 V); immune to phase inversion beyond rails. |
| 3 | Output (Amp A) | Capable of sourcing/sinking ±30 mA; output resistance ~110 Ω (sourcing) enables direct drive of 25 kΩ loads to rail. |
| 4 | V− (Ground/−VS) | Reference for single-supply (0 V) or split-supply (−VS) operation; must be low-impedance for PSRR integrity. |
| 5 | Non-Inverting Input (Amp B) | Independent high-Z input; identical specs to Pin 2; supports dual-channel signal paths without crosstalk (130 dB isolation). |
| 6 | Inverting Input (Amp B) | Matches Pin 1 performance; enables matched dual instrumentation front-ends with shared gain-setting resistors. |
| 7 | Output (Amp B) | Electrically isolated from Amp A output; supports independent feedback networks and load decoupling. |
| 8 | V+ (Supply) | Accepts 3.0–15.5 V; internal regulation ensures stable biasing across voltage range; bypass capacitor (0.1 μF) mandatory. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 0.2 V beyond both supply rails (e.g., −0.2 V to 5.3 V at VS = 5 V), enabling direct sensing of ground-referenced or over-rail transducer outputs. |
| Ultra-low input bias current | 150 fA typical allows use with >1 GΩ source impedances (e.g., piezoelectric sensors, ion-selective electrodes) without measurable error. |
| Guaranteed 3 V and 5 V operation | Full DC/AC specs validated at both 3 V and 5 V, eliminating design uncertainty when migrating between coin-cell and USB-powered platforms. |
| Low quiescent power | 60 μW per amplifier at 3 V supply extends battery life in wearable health monitors and remote environmental loggers. |
| High CMRR and PSRR | 85 dB CMRR and 85 dB +PSRR at 5 V suppress noise from shared PCB power nets and enable clean measurements in noisy industrial settings. |
Applications
| Portable Medical Sensors | Battery Monitoring Systems |
|---|---|
Use Scenario: Amplifying weak bio-potential signals (e.g., ECG, EMG) from dry electrodes in handheld diagnostic devices. IC Role / Device Role / Timing Role: Dual-channel precision front-end amplifier providing rail-to-rail input swing and ultra-low input current to preserve signal integrity from high-impedance electrodes. Use Value: 0.25 mV offset and 150 fA bias current minimize baseline drift and enable detection of sub-millivolt physiological waveforms without AC coupling. |
Use Scenario: Measuring cell voltage and current in multi-cell Li-ion battery packs for portable tools and drones. IC Role / Device Role / Timing Role: Dual op-amp configured as differential voltage monitor and current-sense amplifier with rail-to-rail output driving ADC reference points. Use Value: 85 dB CMRR rejects common-mode noise from switching regulators; 20 μA quiescent current minimizes self-discharge during sleep mode. |
| Transducer Interface Circuits | Low-Power Instrumentation Amplifiers |
Use Scenario: Conditioning output from silicon strain gauges and MEMS pressure sensors in IoT edge nodes. IC Role / Device Role / Timing Role: First-stage buffer and gain stage in Wheatstone bridge interface, leveraging rail-to-rail input to capture full bridge differential swing. Use Value: Input common-mode range exceeding rails allows direct connection to unbuffered bridge outputs without level-shifting circuitry. |
Use Scenario: Building discrete 3-op-amp instrumentation amplifiers for high-CMRR data acquisition in field-deployable analyzers. IC Role / Device Role / Timing Role: Two matched amplifiers forming input stage with third op-amp for output stage; LMC6462AIM provides matched VOS and TCVOs. Use Value: 0.25 mV max VOS and 1.5 μV/°C TCVOS ensure <5 μV total offset drift over 0–70°C, critical for 16-bit measurement accuracy. |
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 |
|---|---|---|---|
| LMC6482AIM | Higher supply current (120 μA/amplifier), 1.3 MHz GBW, 1.2 V/ms slew rate; same rail-to-rail I/O and 0.25 mV VOS. | Better suited for higher-speed sensor interfaces (>100 kHz), but increases battery drain by 6× vs. LMC6462AIM. | Select LMC6482AIM only when bandwidth >100 kHz is required; otherwise LMC6462AIM saves power and board space. |
| TLV2462IDR | 65 μA/amplifier supply current, 6.4 MHz GBW, 1.6 V/ms slew rate; rail-to-rail output only (not input); 3.5 mV VOS (max). | Acceptable for mid-precision, higher-speed applications where input rail-to-rail is not mandatory. | Choose TLV2462IDR for cost-sensitive designs needing >100 kHz bandwidth and moderate offset; avoid where sub-mV accuracy or true rail-to-rail input is needed. |
Compared with LMC6462AIM, LMC6482AIM trades 6× higher quiescent current for 26× greater bandwidth, while TLV2462IDR sacrifices rail-to-rail input and 14× higher offset voltage to reduce cost-making LMC6462AIM optimal for ultra-low-power, high-accuracy DC-coupled sensing.
Availability
LMC6462AIM is available at Aetrix Electronics and suitable for portable medical sensors, battery monitoring systems, transducer interface circuits, and low-power instrumentation amplifiers requiring stable component supply across extended production lifecycles.
Supply support for LMC6462AIM 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 expertise in precision op-amps and low-power signal chains.
The LMC6462AIM belongs to TI's micropower rail-to-rail op-amp family, designed specifically for battery-operated instrumentation, portable diagnostics, and industrial sensor interfaces demanding ultra-low bias current and guaranteed low-voltage operation.
FAQ
What is the maximum supply voltage rating for the LMC6462AIM?
The LMC6462AIM has an absolute maximum supply voltage (V+ − V−) of 16 V, with recommended operating range from 3.0 V to 15.5 V. Operation above 15.5 V risks permanent damage; at 15 V supply, output swing remains within 50 mV of rails into 25 kΩ loads, and supply current is 50 μA per amplifier (max).
Does the LMC6462AIM support true rail-to-rail input operation?
Yes, the LMC6462AIM supports true rail-to-rail input common-mode voltage range: −0.2 V to V+ + 0.3 V at 25°C. At VS = 5 V, this means −0.2 V to 5.3 V-exceeding both supply rails without phase inversion or increased input bias current, as verified in Figure 33 of the SNOS725D datasheet.
Can the LMC6462AIM drive capacitive loads directly?
The LMC6462AIM can drive up to 200 pF capacitively at unity gain (VS = 5 V) without oscillation. For larger loads (e.g., 300 pF), external compensation is required-such as series output resistance (Figure 36) or feedback capacitor networks (Figure 38)-to maintain phase margin and prevent ringing in pulse response.
What is the input offset voltage specification for the LMC6462AIM over temperature?
The LMC6462AIM has a maximum input offset voltage of 0.5 mV at −40°C to +85°C (LMC6462AI grade), with average drift of 1.5 μV/°C. At 25°C and 5 V supply, typical VOS is 0.25 mV; worst-case drift over full temperature range adds ≤0.12 mV, resulting in ≤0.62 mV total error-critical for DC-coupled precision gain stages.
Is the LMC6462AIM pin-compatible with other dual op-amps in SOIC-8 packages?
The LMC6462AIM uses standard dual op-amp pinout (SOIC-8, Package D) matching industry conventions (e.g., pins 1–3/Amp A, 5–7/Amp B). However, it is not functionally or electrically pin-compatible with non-rail-to-rail-input op-amps like LM358 or TLC272 due to differing input stage architecture and bias requirements-PCB layout must accommodate its unique guarding needs for <1 pA leakage.
LMC6462AIM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.028V/µs
- Gain Bandwidth Product:
- 50 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.15 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 50µA (x2 Channels)
- Current - Output / Channel:
- 75 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 15.5 V
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMC6462AIM FAQ
1.How can I place an order for LMC6462AIM through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6462AIM 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 LMC6462AIM reliable?
The price and inventory of LMC6462AIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6462AIM is usually 5 days.
3.What payment methods are accepted for LMC6462AIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6462AIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6462AIM?
LMC6462AIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6462AIM 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 LMC6462AIM?
For technical support, including LMC6462AIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6462AIM requirements.
6.How does Aetrix verify that LMC6462AIM is sourced from the original manufacturer or authorized distributors?
All LMC6462AIM 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 LMC6462AIM meets industry standards.
7.What is the process for return or replacement of LMC6462AIM?
All LMC6462AIM units undergo pre-shipment inspection (PSI). If there is an issue with LMC6462AIM, 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 LMC6462AIM part is unused and in its original packaging.
Return procedure for LMC6462AIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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