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Texas Instruments LMC6022IM/NOPB
- Part No.:
- LMC6022IM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6022IM/NOPB.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,865
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Product details
Overview
LMC6022IM/NOPB from Texas Instruments is a low-power CMOS dual operational amplifier designed for high-impedance signal conditioning in single-supply (4.75–15.5 V) or split-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 rail-to-rail output swing down to V−. It is used in photodiode current-to-voltage converters and long-term integrators where leakage-sensitive precision is critical.
For engineers reviewing the LMC6022IM/NOPB datasheet, LMC6022IM/NOPB pinout, LMC6022IM/NOPB application, or LMC6022IM/NOPB equivalent, key selection criteria include input bias current stability over temperature, common-mode range extending to V−, micropower operation (86 μA per amplifier), and compatibility with high-impedance sensor interfaces requiring <100 fA leakage tolerance.
Technical Context
The LMC6022IM/NOPB uses a compound integrator-based output stage-without a traditional unity-gain buffer-to achieve 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 that provides asymmetric sourcing/sinking gain paths: four gain stages when sourcing, three when sinking.
This architecture enables high open-loop gain (≥200 V/mV into 5 kΩ) and stable operation with capacitive loads up to ~100 pF when compensated with series output resistance (50–100 Ω) and feedback capacitance (5–10 pF), as verified in TI's Application Hints section and Figure 27.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.75 V to 15.5 V - supports both single-supply industrial sensing and dual-supply instrumentation without level-shifting. |
| Input Bias Current | 40 fA typical - enables >1 TΩ effective input impedance, critical for photodiode and piezoelectric sensor front-ends. |
| Input Offset Drift | 2.5 μV/°C - ensures <15 μV total drift over −40°C to +85°C, minimizing calibration burden in unregulated environments. |
| Large-Signal Voltage Gain | 200 V/mV min into 100 kΩ - sustains high closed-loop accuracy even under heavy loading, unlike many CMOS op amps. |
| Slew Rate | 0.05 V/μs min - sufficient for DC–1 kHz precision applications including sample-and-hold and medical bio-signal amplification. |
| Common-Mode Range | Extends to V− - allows direct interfacing with grounded sensors or current sources without level-shifting circuitry. |
| Quiescent Current | 86 μA per amplifier - enables battery-powered operation for >10 years in 10 μA-systems with duty-cycled measurement cycles. |
Pinout & Package
LMC6022IM/NOPB is housed in an 8-pin SOIC (D) package, 3.91 mm wide, 4.90 mm long, 1.75 mm max height, with 1.27 mm pitch and JEDEC MS-012 AA compliance. Pin 1 identifier is located at top-left corner with beveled edge marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node accepting differential input; requires guard ring layout to preserve 40 fA bias current spec. |
| 2 | Non-Inverting Input (Amplifier A) | Reference node for A-channel; common-mode range includes V−, enabling ground-referenced sensor inputs. |
| 3 | Output (Amplifier A) | Rail-to-rail capable output driving ≥5 kΩ loads; stable with ≤100 pF capacitive load when compensated per Figure 27. |
| 4 | V− (Negative Supply) | Ground reference in single-supply mode; must be connected directly to PCB ground plane with low-inductance path. |
| 5 | Non-Inverting Input (Amplifier B) | Independent high-Z input for second channel; layout symmetry with Pin 2 recommended for matched thermal drift. |
| 6 | Inverting Input (Amplifier B) | Second differential input; shares same ultra-low bias current and CMRR specs as Pin 1. |
| 7 | Output (Amplifier B) | Independent rail-to-rail output; amp-to-amp isolation >130 dB prevents crosstalk in dual-channel instrumentation. |
| 8 | V+ (Positive Supply) | Power rail supporting up to 15.5 V; internal ESD protection limits output short-circuit to V+ at >13 V per Absolute Maximum Ratings. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 40 fA typical - preserves signal integrity in femtoamp-level current measurements from photodiodes or ion-selective electrodes. |
| Rail-to-rail output swing | Reaches within 60 mV of V− and 30 mV of V+ at 5 kΩ - maximizes dynamic range in low-voltage single-supply systems. |
| Input common-mode range includes V− | Operates with inputs at ground potential - eliminates need for input biasing resistors in grounded-source transducer interfaces. |
| Micropower operation | 86 μA per amplifier - enables integration into energy-harvesting nodes and portable medical devices with multi-year battery life. |
| High open-loop gain stability | ≥200 V/mV into 5 kΩ load - maintains closed-loop accuracy across temperature and supply variation without gain trimming. |
Applications
| Photodiode Current-to-Voltage Converter | Long-Term Integrator |
|---|---|
Use Scenario: Converting weak photocurrents (pA–nA) from scientific-grade photodiodes into measurable voltage signals under ambient light or low-light conditions. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current and high DC gain to minimize dark-current-induced offset errors. Use Value: Enables sub-picoamp resolution without guard-ring layout degradation-critical for spectrophotometry and particle detection systems. | Use Scenario: Accumulating charge from low-leakage current sources (e.g., radiation dosimeters or electrochemical sensors) over hours or days. IC Role / Device Role / Timing Role: High-input-impedance integrator core with <2.5 μV/°C drift to maintain integration accuracy across temperature cycling. Use Value: Achieves <0.1% error over 24-hour integration at room temperature-superior to bipolar op amps due to negligible input bias current drift. |
| Medical Instrumentation Front-End | Industrial Control Signal Conditioning |
Use Scenario: Amplifying microvolt-level biopotential signals (ECG, EEG) in battery-powered patient monitors with strict power budgets. IC Role / Device Role / Timing Role: Dual-channel DC-coupled preamplifier providing matched gain, low noise (42 nV/√Hz), and rail-to-rail output for ADC interface. Use Value: Delivers >110 dB SNR at 1 kHz with 86 μA per channel-enabling Class I medical device certification without active cooling or complex power management. | Use Scenario: Buffering and scaling high-impedance outputs from RTDs, thermocouples, or strain gauges in factory automation PLC modules. IC Role / Device Role / Timing Role: High-Z unity-gain buffer with input common-mode range to V−, allowing direct connection to grounded sensor bridges. Use Value: Eliminates external level-shifting components and reduces BOM count by 3 parts per channel versus standard rail-splitter solutions. |
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 |
|---|---|---|---|
| TLC27L2CD | Higher input bias current (0.6 pA), lower gain (100 dB), wider offset drift (10 μV/°C) | Less suitable for pA-level current measurement or long-term integration | Preferred only when cost is primary constraint and 10× higher bias current is acceptable |
| OPA2313IDR | Lower quiescent current (50 μA), higher GBW (1 MHz), but input bias current 10× higher (0.3 pA) | Better for AC-coupled sensor interfaces above 10 kHz; unsuitable for DC-stable integrators | Select when bandwidth >100 kHz is required and femtoamp leakage is not critical |
Compared with TLC27L2CD and OPA2313IDR, the LMC6022IM/NOPB uniquely balances femtoamp input bias, rail-to-rail output, and sub-100 μA quiescent current-making it irreplaceable in ultra-high-impedance DC signal chains where leakage and drift dominate error budgets.
Availability
LMC6022IM/NOPB is available at Aetrix Electronics and suitable for photodiode interfaces, long-term integrators, and medical front-ends requiring stable component supply, long-lifecycle support, and guaranteed traceability for ISO 13485 and IATF 16949 programs.
Supply support for LMC6022IM/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 delivering analog and embedded processing solutions, with over 50 years of op amp innovation and manufacturing excellence.
The LMC6022IM/NOPB belongs to TI's precision CMOS op amp product line, engineered specifically for ultra-low-input-bias, micropower, single-supply sensor signal conditioning in medical, scientific, and industrial instrumentation.
FAQ
What is the maximum capacitive load the LMC6022IM/NOPB can drive without oscillation?
The LMC6022IM/NOPB can drive up to ~100 pF capacitively without oscillation when configured as a unity-gain follower and compensated with a 50–100 Ω series resistor at the output plus 5–10 pF feedback capacitor, as documented in Figure 27 of the SNOS622D datasheet. Uncompensated operation becomes unstable beyond ~30 pF in high-gain configurations.
Does the LMC6022IM/NOPB support true rail-to-rail input operation?
No-the LMC6022IM/NOPB features rail-to-rail *output* swing but its input common-mode range extends only to V− (not to V+). The upper limit is V+ − 2.5 V at 25°C, as specified in the DC Electrical Characteristics table. This allows ground-referenced inputs but not full rail-to-rail differential input voltage capability.
Can the LMC6022IM/NOPB operate from a 3.3 V supply?
No-the LMC6022IM/NOPB has a minimum specified supply voltage of 4.75 V per the Operating Ratings table. Operation below 4.75 V is outside guaranteed specifications and may result in degraded gain, reduced output swing, or increased offset drift; TI does not characterize or warrant performance at 3.3 V.
How is the input bias current of the LMC6022IM/NOPB measured and validated?
The input bias current of the LMC6022IM/NOPB is measured using the test circuit in Figure 32 of the datasheet: a 5–10 pF NPO capacitor charged via switch S2, then isolated to observe voltage ramp rate on the input node. Typical value (40 fA) is confirmed across temperature and process corners, with maximum limit of 200 fA guaranteed per production testing per the DC Electrical Characteristics table.
Is the LMC6022IM/NOPB pin-compatible with the LMC6024 quad variant?
No-the LMC6022IM/NOPB is an 8-pin SOIC dual op amp, while the LMC6024 is a 14-pin SOIC quad op amp with different pinout, supply pin arrangement (V+ on Pin 14, V− on Pin 7), and no shared pin mapping. They share electrical specifications but require separate PCB layouts and cannot be substituted without redesign.
LMC6022IM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMC®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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
LMC6022IM/NOPB FAQ
1.How can I place an order for LMC6022IM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6022IM/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 LMC6022IM/NOPB reliable?
The price and inventory of LMC6022IM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6022IM/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6022IM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6022IM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6022IM/NOPB?
LMC6022IM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6022IM/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 LMC6022IM/NOPB?
For technical support, including LMC6022IM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6022IM/NOPB requirements.
6.How does Aetrix verify that LMC6022IM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6022IM/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 LMC6022IM/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6022IM/NOPB?
All LMC6022IM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6022IM/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 LMC6022IM/NOPB part is unused and in its original packaging.
Return procedure for LMC6022IM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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