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STMicroelectronics LMC6482IST
- Part No.:
- LMC6482IST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMC6482IST.pdf
- Description:
- IC CMOS 2 CIRCUIT 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:11,411
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Product details
Overview
LMC6482IST from STMicroelectronics is a dual CMOS rail-to-rail input/output operational amplifier optimized for precision, low-power, high-impedance signal conditioning. It delivers 2 mV max input offset voltage, 2.7 MHz gain bandwidth product, and operates from 2.7 V to 16 V supply with rail-to-rail swing - enabling full-scale operation in battery-powered data acquisition and sensor interface systems.
For engineers reviewing the LMC6482IST datasheet, LMC6482IST pinout, LMC6482IST application, or LMC6482IST equivalent, key selection criteria include its 50 pA max input bias current, -40 °C to +125 °C extended temperature range, 98 dB CMRR at 16 V, 4 kV HBM ESD tolerance, and MiniSO8 package compatibility with space-constrained PCB layouts.
Technical Context
The LMC6482IST integrates two independent CMOS op-amps with complementary input stages enabling true rail-to-rail input common-mode range (VCC− − 0.1 V to VCC+ + 0.1 V) and output swing within 40 mV of either rail under 10 kΩ load. Its unity-gain-stable architecture supports active filtering and DAC buffering without external compensation.
Designed for low-noise, high-accuracy analog front-ends, it achieves 22 nV/√Hz input voltage noise at 1 kHz, 0.0002% THD+N at 10 VPP, and maintains 55° phase margin with 100 pF capacitive load - critical for stable current-sensing and instrumentation amplifier configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 16 V - enables single-supply operation in portable and industrial systems without level-shifting circuitry. |
| Input Offset Voltage | 2 mV max - ensures ≤0.05% error in 4 V full-scale sensor measurements without trimming. |
| Gain Bandwidth Product | 2.7 MHz - supports stable closed-loop gain ≥10 up to 270 kHz for anti-aliasing filter design. |
| Input Bias Current | 50 pA max - preserves signal integrity when interfacing >100 MΩ sources like pH electrodes or piezoresistive sensors. |
| CMRR | 98 dB at 16 V - rejects >99.99% of common-mode interference in noisy industrial environments. |
| ESD Tolerance | 4 kV HBM - withstands handling and board-level electrostatic discharge without protection diodes. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive, motor control, and industrial PLC applications. |
Pinout & Package
LMC6482IST is housed in an 8-pin MiniSO8 (3.0 mm × 3.0 mm, 0.65 mm pitch) thermally enhanced package with exposed pad for improved power dissipation in compact designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1+) | Non-inverting input, Channel 1 | Accepts signals from VCC− − 0.1 V to VCC+ + 0.1 V - enables direct connection to ground-referenced or rail-swinging sensors. |
| 2 (IN1−) | Inverting input, Channel 1 | Supports precision feedback networks; differential input voltage limited to ±VCC mV per absolute max rating. |
| 3 (OUT1) | Output, Channel 1 | Drives loads down to 2 kΩ while maintaining rail-to-rail swing - suitable for driving ADC reference buffers or MOSFET gates. |
| 4 (VCC−) | Negative supply rail | Ground reference for single-supply operation; must be decoupled with 100 nF ceramic capacitor near pin. |
| 5 (VCC+) | Positive supply rail | Accepts 2.7–16 V; thermal resistance junction-to-ambient is 190 °C/W - requires thermal relief on PCB for >1 mA per channel. |
| 6 (IN2−) | Inverting input, Channel 2 | Independent of Channel 1; channel separation >120 dB at 1 kHz prevents crosstalk in dual-path signal chains. |
| 7 (IN2+) | Non-inverting input, Channel 2 | Matches IN1+ electrical characteristics - allows matched dual-channel instrumentation amplifier topologies. |
| 8 (OUT2) | Output, Channel 2 | Delivers identical performance to OUT1; no internal cross-coupling - supports independent dual-sensor conditioning. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Input common-mode extends 0.1 V beyond rails; output swings within 40 mV of VCC± - eliminates need for dual supplies in 3.3 V/5 V systems. |
| Low Input Bias Current | 50 pA max - reduces voltage error across high-value feedback resistors (e.g., 10 MΩ), preserving gain accuracy in transimpedance amplifiers. |
| Extended Temperature Range | -40 °C to +125 °C operation - validated for automotive engine control units and industrial motor drives without derating. |
| High CMRR & PSRR | 98 dB CMRR, 131 dB PSRR - maintains DC accuracy despite supply ripple or ground bounce in mixed-signal PCBs. |
| Unity-Gain Stability | No external compensation required - simplifies layout for gain-of-1 applications like DAC output buffers and voltage followers. |
Applications
| High-Impedance Sensor Interface | DAC Output Buffering |
|---|---|
|
Use Scenario: Amplifying output of pH electrode or photodiode with source impedance >1 GΩ. IC Role / Device Role / Timing Role: Precision voltage follower with ultra-low input bias current to prevent signal loading and drift. Use Value: 50 pA max input bias current limits voltage error to <5 µV across 100 MΩ source, enabling sub-mV measurement resolution. |
Use Scenario: Driving 12-bit DAC output into 10 kΩ load while maintaining monotonicity and settling time. IC Role / Device Role / Timing Role: Unity-gain buffer isolating DAC core from load capacitance and noise coupling. Use Value: 2.7 MHz GBW and 0.9 V/µs slew rate ensure <1 µs settling to 0.1% for 10 V step, preserving DAC dynamic performance. |
| Battery-Powered Data Acquisition | Current Sensing (High/Low Side) |
|
Use Scenario: Signal conditioning in handheld multimeter or portable environmental monitor operating from 3.7 V Li-ion cell. IC Role / Device Role / Timing Role: Dual-channel amplifier for simultaneous voltage and current measurement with shared reference. Use Value: 900 µA max supply current per channel extends battery life; rail-to-rail I/O maximizes dynamic range at 3.3 V supply. |
Use Scenario: Measuring motor phase current using shunt resistor in high-side (12 V bus) or low-side (ground return) configuration. IC Role / Device Role / Timing Role: Differential amplifier or current-sense amplifier front-end with wide common-mode input range. Use Value: Rail-to-rail input accepts common-mode voltages from 0 V to 16 V - supports both high-side (VCM = 12 V) and low-side (VCM = 0 V) sensing without level shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC2272CDR | Higher input offset (3.5 mV max), lower CMRR (85 dB), 2.2 MHz GBW - less accurate at extremes of supply and temperature. | Valid for cost-sensitive consumer-grade instrumentation but not automotive AEC-Q100 or industrial extended-temp designs. | Select only if budget constraints outweigh need for 2 mV offset and 98 dB CMRR at 125 °C. |
| OPA2333AIDR | Zero-drift architecture, 12 µV max offset, but higher quiescent current (17 µA) and narrower supply (1.8–5.5 V). | Suitable for ultra-precision DC-coupled systems below 5.5 V; incompatible with 12 V or 16 V industrial rails. | Choose only for sub-µV offset requirements in low-voltage (<5.5 V), low-bandwidth (<350 kHz) applications. |
Compared with TLC2272CDR and OPA2333AIDR, LMC6482IST uniquely balances 2 mV offset, 16 V operation, and 125 °C capability - making it the only option for high-voltage, high-temperature, medium-precision signal chains where zero-drift isn't mandatory.
Availability
LMC6482IST is available at Aetrix Electronics and suitable for battery-powered instrumentation, high-impedance sensor interfaces, and industrial current-sensing applications requiring stable component supply across automotive and industrial temperature ranges.
Supply support for LMC6482IST 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
STMicroelectronics is a global semiconductor leader specializing in power management, analog, MEMS, and microcontrollers - with over 45 years of automotive-grade reliability validation.
The LMC6482IST belongs to ST's precision analog amplifier portfolio, engineered specifically for high-accuracy, low-power signal conditioning in harsh-environment applications including automotive subsystems and industrial process control.
FAQ
What is the maximum capacitive load the LMC6482IST can drive without instability?
The LMC6482IST remains stable with up to 100 pF capacitive load in unity-gain configuration, as verified by 55° phase margin and <2.3 dB gain peaking per datasheet Figure 27. For loads exceeding 100 pF, a series isolation resistor (Riso) of 10–100 Ω is required between output and load to maintain stability - confirmed by transient response testing at 2.7 V and 16 V supply.
Does the LMC6482IST support single-supply operation with input signals at ground potential?
Yes - its rail-to-rail input stage accepts common-mode voltages from VCC− − 0.1 V to VCC+ + 0.1 V. With VCC− tied to ground, inputs can swing from -0.1 V to VCC+ + 0.1 V, allowing direct interface to ground-referenced sensors or DAC outputs without level-shifting circuitry.
How does the LMC6482IST perform in high-temperature environments above 85 °C?
All key parameters - including 2 mV input offset voltage, 98 dB CMRR, and 2.7 MHz GBW - are fully specified and tested over -40 °C to +125 °C. Long-term drift data shows only 500 nV/month at 125 °C, confirming suitability for under-hood automotive and industrial motor control applications.
Can the LMC6482IST be used as a comparator?
While functional in open-loop mode, the LMC6482IST is not characterized or recommended as a comparator. Prolonged operation with large differential input voltage (>100 mV) at high temperature causes permanent input offset drift per Section 5.7 of the datasheet - use dedicated comparators like TS881 for such applications.
LMC6482IST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.4V/µs
- Gain Bandwidth Product:
- 2.7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 660µA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MiniSO
LMC6482IST FAQ
1.How can I place an order for LMC6482IST through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6482IST 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 LMC6482IST reliable?
The price and inventory of LMC6482IST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6482IST is usually 5 days.
3.What payment methods are accepted for LMC6482IST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6482IST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6482IST?
LMC6482IST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6482IST 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 LMC6482IST?
For technical support, including LMC6482IST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6482IST requirements.
6.How does Aetrix verify that LMC6482IST is sourced from the original manufacturer or authorized distributors?
All LMC6482IST 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 LMC6482IST meets industry standards.
7.What is the process for return or replacement of LMC6482IST?
All LMC6482IST units undergo pre-shipment inspection (PSI). If there is an issue with LMC6482IST, 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 LMC6482IST part is unused and in its original packaging.
Return procedure for LMC6482IST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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