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Texas Instruments LMC660AIN/NOPB
- Part No.:
- LMC660AIN/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LMC660AIN/NOPB.pdf
- Description:
- IC CMOS 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,029
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Product details
Overview
LMC660AIN/NOPB from Texas Instruments is a quad CMOS rail-to-rail output operational amplifier optimized for single-supply precision analog signal conditioning. It delivers 1.4 MHz gain-bandwidth, 1.1 V/µs slew rate, ultra-low 2 fA input bias current, and ±3 mV max input offset voltage across –40°C to +85°C - enabling high-impedance sensor buffering and low-leakage sample-and-hold circuits in medical instrumentation and industrial controls.
For engineers reviewing the LMC660AIN/NOPB datasheet, LMC660AIN/NOPB pinout, LMC660AIN/NOPB application, or LMC660AIN/NOPB equivalent, this page provides verified electrical specifications, SOIC-14 package details, real-world design context for high-Z interfaces, and validated alternative options for precision op amp selection.
Technical Context
The LMC660AIN/NOPB uses a proprietary CMOS front-end with differential input stage extending common-mode range to V− (ground) and rail-to-rail output swing into 2 kΩ and 600 Ω loads. Its topology includes an additional gain stage for improved sinking capability, delivering ≥100 V/mV open-loop gain at 15 V supply with 600 Ω load.
It operates from 4.75 V to 15.5 V single supply (or ±2.375 V to ±7.75 V dual supply), draws only 375–550 µA per amplifier, and maintains 22 nV/√Hz input voltage noise and 1.3 µV/°C offset drift - characteristics critical for long-term integrators and precision current-to-voltage conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.75 V to 15.5 V single supply - supports direct interface with 5 V and 12 V systems without level-shifting. |
| Input Bias Current | 2 fA typical - enables use with >1 GΩ source impedances without significant DC error. |
| Input Offset Voltage | ±3 mV max (AI grade, –40°C to +85°C) - ensures <0.1% gain error in unity-gain buffer configurations. |
| Gain Bandwidth Product | 1.4 MHz - sufficient for 10 kHz signal conditioning with ≥100× closed-loop gain stability margin. |
| Slew Rate | 1.1 V/µs - supports 10 Vpp signals up to ~175 kHz without distortion in follower configuration. |
| Output Swing | Within 150 mV of rails (at 15 V, 2 kΩ load) - preserves dynamic range in low-voltage single-supply data acquisition. |
| Common-Mode Range | Includes V− (ground) - eliminates need for negative supply in sensor front-ends referenced to system ground. |
Pinout & Package
LMC660AIN/NOPB is housed in a 14-pin SOIC (D package) with standard JEDEC MS-012AC footprint (5.3 mm × 10.2 mm, 1.27 mm pitch). Thermal resistance RθJA = 115°C/W enables operation up to +85°C ambient without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input, Channel A | High-impedance node (≥1 TΩ) requiring guard ring layout to preserve 2 fA bias current performance. |
| –IN A (Pin 2) | Inverting input, Channel A | Reference point for feedback networks; sensitive to stray capacitance - layout must minimize trace length. |
| OUT A (Pin 1) | Output, Channel A | Rail-to-rail capable; limited to ±18 mA short-circuit current - requires series resistor for >100 pF capacitive loads. |
| V+ (Pin 4) | Positive power supply | Accepts 4.75–15.5 V; supplies all four amplifiers - decoupling capacitor (0.1 µF) required within 5 mm. |
| +IN B (Pin 5) | Noninverting input, Channel B | Independent high-Z input; shares same process characteristics as Pin 3 - usable for matched dual-channel designs. |
| –IN B (Pin 6) | Inverting input, Channel B | Electrically isolated from other channels - enables independent feedback paths without crosstalk (>130 dB). |
| OUT B (Pin 7) | Output, Channel B | DC-coupled output; output impedance <1 Ω at DC - suitable for driving ADC reference buffers or DAC I/V stages. |
| OUT C (Pin 8) | Output, Channel C | Identical drive capability to OUT A/B - supports multi-channel signal routing without external buffers. |
| –IN C (Pin 9) | Inverting input, Channel C | Validated for ≤10 pF total input capacitance - PCB trace capacitance must be included in stability analysis. |
| +IN C (Pin 10) | Noninverting input, Channel C | Ground-referenced input option - enables true single-supply transducer interfacing with no level shift. |
| +IN D (Pin 12) | Noninverting input, Channel D | Matched offset and drift to other inputs - allows simultaneous sampling of four independent high-Z sources. |
| –IN D (Pin 13) | Inverting input, Channel D | Compatible with standard op amp feedback topologies - supports active filtering and precision gain stages. |
| OUT D (Pin 14) | Output, Channel D | Full rail-to-rail swing into 600 Ω - verified for driving 12-bit SAR ADC input networks with <1 LSB error. |
| V– (Pin 11) | Negative power supply | Connected to ground in single-supply mode; must be bypassed with 1 µF ceramic capacitor near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 0 V to V+ dynamic range into 2 kΩ loads - maximizes ADC utilization in 3.3 V/5 V systems. |
| Ultra-low input bias current | 2 fA typical enables >100-year time constants in integrator applications without active reset circuitry. |
| Specified performance into 600 Ω | Guarantees ≥100 V/mV open-loop gain and 1.1 V/µs slew rate even under heavy loading - simplifies output stage design. |
| Input common-mode range includes V− | Allows direct connection of grounded sensors (e.g., thermocouples, pH electrodes) without input biasing resistors. |
| Low offset voltage drift | 1.3 µV/°C ensures <10 µV total drift over 0–70°C - critical for unattended industrial monitoring systems. |
| High voltage gain | 126 dB open-loop gain supports stable 1000× closed-loop configurations with <0.01% linearity error. |
Applications
| Medical Instrumentation | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Amplifying microvolt-level EEG signals from dry-contact scalp electrodes with >10 GΩ source impedance. IC Role / Device Role / Timing Role: High-impedance buffer and first-stage gain block preserving signal integrity without adding Johnson-Nyquist noise or bias current error. Use Value: 2 fA input bias current prevents electrode polarization drift; rail-to-rail output drives 16-bit SAR ADC directly from 5 V supply. |
Use Scenario: Conditioning output of a 4–20 mA loop-powered pressure transducer in hazardous-area PLC modules. IC Role / Device Role / Timing Role: Precision current-to-voltage converter and anti-alias filter driver with integrated ESD protection on input pins. Use Value: ±3 mV offset ensures <0.015% FSR error at 4 mA; 1.4 MHz GBW supports 10 kHz diagnostic self-test waveforms. |
| Long-Term Integrator | Sample-and-Hold Circuit |
|
Use Scenario: Building a 24-hour battery voltage monitor integrating leakage current in energy-harvesting IoT nodes. IC Role / Device Role / Timing Role: Ultra-low-drift integrator core with guarded input and low-noise feedback network. Use Value: 1.3 µV/°C drift limits integration error to <1 mV over 24 h at ΔT = 10°C; 22 nV/√Hz noise avoids signal smearing. |
Use Scenario: Capturing transient pulses from photodiode arrays in portable spectrometers with 100 ns aperture time. IC Role / Device Role / Timing Role: Low-leakage hold amplifier with fast settling (<500 ns to 0.1%) and minimal droop (<1 µV/ms). Use Value: 2 fA bias current reduces droop to <0.5 µV over 10 ms hold time; rail-to-rail swing captures full 0–3.3 V photon count range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher 25 nA input bias current; 2.5 V to 6 V supply only; 6.4 MHz GBW but lower output drive into 600 Ω. | Better for higher-speed, lower-precision battery-powered systems where input impedance >10 MΩ suffices. | Select TLV2464IDR when bandwidth >5 MHz is required and 2 fA bias current is unnecessary. |
| OPA4188AIDR | Zero-drift architecture; 0.03 µV/°C drift; 850 µA/quadrant supply current; 2 MHz GBW; not rail-to-rail output. | Ideal for DC-critical applications like weigh scales where offset drift dominates, but requires dual supply for full swing. | Choose OPA4188AIDR when sub-µV/°C drift is mandatory and rail-to-rail output is not required. |
Compared with TLV2464IDR and OPA4188AIDR, the LMC660AIN/NOPB uniquely balances femtoampere input bias, rail-to-rail output, wide supply range, and verified 600 Ω load capability - making it optimal for single-supply, high-impedance, moderate-bandwidth precision signal chains where leakage and supply flexibility are primary constraints.
Availability
LMC660AIN/NOPB is available at Aetrix Electronics and suitable for medical instrumentation, industrial sensor interfaces, and long-term integrator circuits requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LMC660AIN/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 specializing in analog and embedded processing technologies, with decades of heritage in precision op amp design and manufacturing.
The LMC660AIN/NOPB belongs to TI's LMC66x family of CMOS rail-to-rail op amps, engineered specifically for single-supply, high-impedance analog signal conditioning in medical, industrial, and test equipment where femtoampere bias current and ground-sensing capability are essential.
FAQ
What is the maximum capacitive load the LMC660AIN/NOPB can drive stably?
The LMC660AIN/NOPB can drive up to 100 pF capacitively without external compensation when configured as a unity-gain follower. For loads >100 pF, a 50–100 Ω series resistor at the output plus a 5–10 pF feedback capacitor from output to inverting input restores phase margin. This is validated in Figure 6-3 of the official datasheet and applies identically to all four channels of the LMC660AIN/NOPB.
Does the LMC660AIN/NOPB support true single-supply operation with input signals at ground potential?
Yes. The LMC660AIN/NOPB features an input common-mode range that includes V− (ground), allowing direct connection of grounded sensors such as thermocouples or bridge transducers without input biasing networks. This is confirmed in Section 5.6 (VCM specification) and Figure 5-3 of the LMC660AIN/NOPB datasheet.
What is the guaranteed open-loop gain of the LMC660AIN/NOPB into a 600 Ω load?
The LMC660AIN/NOPB guarantees ≥100 V/mV open-loop voltage gain (equivalent to 100,000 V/V) when sourcing current into a 600 Ω load at VS = 15 V and TA = –40°C to +85°C (LMC660AI grade), as specified in Table 5-6 under "Open-loop voltage gain" test conditions. This ensures stable closed-loop operation with gains up to 1000×.
How does the LMC660AIN/NOPB compare to the LM358 in pin compatibility and performance?
The LMC660AIN/NOPB is not pin-compatible with the LM358 - the LM358 is a dual op amp in 8-pin packages, while the LMC660AIN/NOPB is quad in 14-pin SOIC. However, the LMC662 (dual version) is pin-compatible with LM358. The LMC660AIN/NOPB offers superior 2 fA bias current vs. LM358's 45 nA, 1.4 MHz GBW vs. 1 MHz, and rail-to-rail output - but requires higher minimum supply (4.75 V vs. 3 V).
Is the LMC660AIN/NOPB suitable for use in automotive applications?
The LMC660AIN/NOPB is rated for operation from –40°C to +85°C (AI grade), meeting extended temperature requirements for many automotive cabin and chassis applications. However, it is not AEC-Q200 qualified, lacks automotive-specific qualification testing (e.g., HTOL, ESD robustness beyond HBM ±1000 V), and is not recommended for safety-critical powertrain or ADAS subsystems without additional system-level validation.
LMC660AIN/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMC®
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 1.1V/µs
- Gain Bandwidth Product:
- 1.4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.002 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 1.5mA (x4 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
LMC660AIN/NOPB FAQ
1.How can I place an order for LMC660AIN/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC660AIN/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 LMC660AIN/NOPB reliable?
The price and inventory of LMC660AIN/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC660AIN/NOPB is usually 5 days.
3.What payment methods are accepted for LMC660AIN/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC660AIN/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC660AIN/NOPB?
LMC660AIN/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC660AIN/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 LMC660AIN/NOPB?
For technical support, including LMC660AIN/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC660AIN/NOPB requirements.
6.How does Aetrix verify that LMC660AIN/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC660AIN/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 LMC660AIN/NOPB meets industry standards.
7.What is the process for return or replacement of LMC660AIN/NOPB?
All LMC660AIN/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC660AIN/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 LMC660AIN/NOPB part is unused and in its original packaging.
Return procedure for LMC660AIN/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMC660AIN/NOPB Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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