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Texas Instruments LMC6022IMX
- Part No.:
- LMC6022IMX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6022IMX.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,242
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Product details
Overview
LMC6022IMX from Texas Instruments is a low-power CMOS dual operational amplifier designed for high-impedance signal conditioning in single- or dual-supply systems. It delivers 120 dB voltage gain into 100 kΩ, ultra-low 40 fA input bias current, 2.5 μV/°C offset drift, and operates from +5 V to +15 V - enabling precision sensor interfacing and micropower instrumentation applications.
For engineers reviewing the LMC6022IMX datasheet, LMC6022IMX pinout, LMC6022IMX application, or LMC6022IMX equivalent, key selection criteria include rail-to-rail output swing capability, guaranteed performance down to −40°C, compatibility with 5 kΩ and 100 kΩ loads, and suitability for photodiode current-to-voltage conversion, long-term integrators, and medical-grade analog front-ends.
Technical Context
The LMC6022IMX uses a compound integrator-based output stage without a traditional unity-gain buffer, enabling rail-to-rail output swing while maintaining stability into 500 Ω loads. Its topology includes dual feed-forward compensation (Cf and Cff) and a push-pull output stage optimized for both sourcing and sinking current.
It features a double-poly silicon-gate CMOS process, delivering ultra-low input bias current (<0.04 pA typical), input common-mode range extending to V−, and guaranteed operation across −40°C to +85°C junction temperature. AC performance includes 0.35 MHz gain-bandwidth product and 0.11 V/μs slew rate under specified test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.75 V to 15.5 V - supports single-supply 5 V systems and higher-voltage industrial rails without level-shifting. |
| Input Bias Current | 0.04 pA typical - enables femtoampere-level leakage-sensitive circuits like photodiode preamps and electrometer-grade integrators. |
| Input Offset Voltage Drift | 2.5 μV/°C - ensures stable DC accuracy over temperature in battery-powered or unregulated thermal environments. |
| Large-Signal Voltage Gain | 200 V/mV min into 100 kΩ - provides sufficient loop gain for precision closed-loop configurations with high-impedance feedback networks. |
| Slew Rate | 0.03 V/μs min - supports low-frequency signal integrity in sample-and-hold, peak detection, and slow-slewing instrumentation paths. |
| Common-Mode Rejection Ratio | 63 dB min (0 V ≤ VCM ≤ 12 V) - maintains accuracy when amplifying small differential signals in noisy industrial or medical settings. |
| Power Dissipation | 0.5 mW typical per amplifier - allows dual-channel operation in thermally constrained PCB layouts or sealed enclosures. |
Pinout & Package
LMC6022IMX is housed in an 8-pin SOIC (D) package with 1.27 mm pitch, 3.91 mm body width, and 1.75 mm max height - compatible with standard surface-mount assembly and IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node requiring guard ring layout; accepts input signals down to V− rail. |
| 2 | Non-Inverting Input (Amplifier A) | Also extends to V−; critical for high-Z sensor connections where leakage must be minimized. |
| 3 | Output (Amplifier A) | Rail-to-rail capable; can source/sink ≥13 mA at 5 V supply; requires series resistor for >100 pF capacitive loads. |
| 4 | V− (Ground or Negative Supply) | Reference for both amplifiers; input common-mode range includes this pin - enables true single-supply operation. |
| 5 | Non-Inverting Input (Amplifier B) | Independent high-Z input; identical specs to Pin 2 - supports dual-channel synchronous sensing. |
| 6 | Inverting Input (Amplifier B) | Matches Pin 1 behavior; layout symmetry recommended for matched noise and drift performance. |
| 7 | Output (Amplifier B) | Functionally identical to Pin 3; enables independent dual-channel buffering or differential output stages. |
| 8 | V+ (Positive Supply) | Accepts up to 15.5 V; PSRR of 63 dB min ensures immunity to supply ripple in mixed-signal systems. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 0.04 pA typical - eliminates error sources in picoampere-range current measurement circuits. |
| Rail-to-rail output swing | Within 60 mV of V− and 30 mV of V+ at 5 kΩ load - maximizes dynamic range in low-voltage single-supply systems. |
| Input common-mode range includes V− | Valid down to −0.1 V at 5 V supply - enables direct connection of grounded sensors without level-shifting circuitry. |
| Micropower operation | 140 μA max supply current per amplifier - supports multi-year battery life in portable medical or environmental monitors. |
| Stable into 500 Ω loads | No external compensation required - simplifies design of low-impedance drivers for ADC reference buffers or active filters. |
Applications
| Photodiode Current-to-Voltage Conversion | Long-Term Integrator |
|---|---|
Use Scenario: Converting weak photocurrents (pA–nA) from scientific or medical photodiodes into measurable voltage signals under 5 V single supply. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current and rail-to-rail output to maximize signal swing. Use Value: Enables sub-picoampere resolution without dark-current-induced offset errors; validated in TI Figure 33 with 5 V bias. |
Use Scenario: Accumulating charge over hours or days in radiation dosimetry, electrochemical sensing, or leakage current monitoring. IC Role / Device Role / Timing Role: Low-drift, low-bias-current integrator core with <2.5 μV/°C offset drift and <0.04 pA input leakage. Use Value: Maintains integration accuracy over extended periods and temperature cycles - referenced in Applications section as primary use case. |
| Medical Instrumentation Front-End | Industrial Sensor Signal Conditioning |
Use Scenario: Amplifying low-amplitude bio-signals (ECG, EEG) from dry electrodes or high-impedance pH probes in portable diagnostic devices. IC Role / Device Role / Timing Role: High-Z buffer and preamplifier stage with CMOS input stage rejecting electrode polarization voltages. Use Value: Eliminates bias current-induced baseline wander; supports single-supply 5 V operation with no external level shifters. |
Use Scenario: Conditioning outputs from strain gauges, RTDs, or capacitive humidity sensors in factory automation or building control systems. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end (e.g., TI Figure 36) with matched gain and CMRR. Use Value: Delivers 63 dB CMRR and 63 dB PSRR to reject common-mode noise from 4–20 mA loops or motor drives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual CMOS op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L2CDR | Higher input bias current (20 pA typ), lower gain (100 dB), wider offset drift (10 μV/°C). | Limited to less demanding low-power applications; not suitable for femtoampere-level photodiode circuits. | Choose when cost sensitivity outweighs ultra-low bias current requirements and 5 V operation suffices. |
| OPA2313IDR | Lower quiescent current (50 μA), higher GBW (1 MHz), but input bias current (10 pA) is 250× higher than LMC6022IMX. | Better for higher-speed signal chains; unsuitable for long-term integrators or electrometer-grade precision. | Select when bandwidth >300 kHz is required and femtoampere input leakage is not critical. |
Compared with TLC27L2CDR and OPA2313IDR, the LMC6022IMX uniquely combines femtoampere input bias current, rail-to-rail output, and guaranteed −40°C to +85°C operation - making it irreplaceable in ultra-high-impedance, low-drift, single-supply instrumentation where leakage and thermal drift dominate error budgets.
Availability
LMC6022IMX is available at Aetrix Electronics and suitable for medical instrumentation, environmental sensor nodes, and portable diagnostic equipment requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for LMC6022IMX 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-chain solutions.
The LMC6022IMX belongs to TI's legacy LMC60xx family of micropower CMOS op-amps, engineered specifically for ultra-high-input-impedance, low-drift applications in battery-powered and medical-grade instrumentation.
FAQ
What is the maximum operating supply voltage for LMC6022IMX?
The LMC6022IMX has an absolute maximum supply voltage (V+ − V−) of 16 V, with guaranteed operating range from 4.75 V to 15.5 V. Operation above 15.5 V risks exceeding junction temperature limits or degrading long-term reliability, as noted in the Absolute Maximum Ratings table of the SNOS622D datasheet.
Does LMC6022IMX support true single-supply operation with inputs at ground potential?
Yes. The LMC6022IMX input common-mode voltage range explicitly includes V−, allowing both inputs to operate at ground (0 V) when V− = 0 V - confirmed in the Electrical Characteristics table under VCM specification and Application Hints section.
Can LMC6022IMX drive a 500 Ω load without external compensation?
Yes. The datasheet states "The op amp can drive load resistance as low as 500Ω without instability," and Figure 23 confirms stability vs. capacitive load only - not resistive. No external compensation is required for purely resistive 500 Ω loads at unity gain.
What is the typical input bias current of LMC6022IMX at room temperature?
The typical input bias current of LMC6022IMX is 0.04 pA (40 fA) at 25°C, as specified in the DC Electrical Characteristics table for the LMC6022I grade. This value is guaranteed ≤200 fA across the full −40°C to +85°C operating temperature range.
Is LMC6022IMX RoHS compliant and lead-free?
Yes. Per TI's Package Option Addendum, LMC6022IMX/NOPB.B is marked "RoHS: Yes" with "SN" (matte tin) lead finish and complies with JEDEC Level-1 moisture sensitivity standards - fully compatible with lead-free reflow profiles up to 260°C peak.
LMC6022IMX 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:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.11V/µs
- Gain Bandwidth Product:
- 350 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.04 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 86µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 4.75 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
LMC6022IMX FAQ
1.How can I place an order for LMC6022IMX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6022IMX 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 LMC6022IMX reliable?
The price and inventory of LMC6022IMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6022IMX is usually 5 days.
3.What payment methods are accepted for LMC6022IMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6022IMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6022IMX?
LMC6022IMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6022IMX 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 LMC6022IMX?
For technical support, including LMC6022IMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6022IMX requirements.
6.How does Aetrix verify that LMC6022IMX is sourced from the original manufacturer or authorized distributors?
All LMC6022IMX 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 LMC6022IMX meets industry standards.
7.What is the process for return or replacement of LMC6022IMX?
All LMC6022IMX units undergo pre-shipment inspection (PSI). If there is an issue with LMC6022IMX, 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 LMC6022IMX part is unused and in its original packaging.
Return procedure for LMC6022IMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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