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Texas Instruments LPC660AIM/NOPB
- Part No.:
- LPC660AIM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LPC660AIM/NOPB.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,658
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Product details
Overview
LPC660AIM/NOPB from Texas Instruments is a low-power CMOS quad operational amplifier optimized for single-supply operation from +5 V to +15 V, featuring rail-to-rail output swing, ultra-low input bias current (2 fA), and 120 dB open-loop voltage gain into 100 kΩ load - ideal for high-impedance sensor interfaces and precision analog signal conditioning in battery-powered instrumentation.
For engineers reviewing the LPC660AIM/NOPB datasheet, LPC660AIM/NOPB pinout, LPC660AIM/NOPB application, or LPC660AIM/NOPB equivalent, key selection criteria include micropower consumption (160 μA per amplifier), input common-mode range extending to V−, low offset drift (1.3 μV/°C), and guaranteed performance across −40°C to +85°C industrial temperature range.
Technical Context
The LPC660AIM/NOPB employs a proprietary compound integrator-based output stage-bypassing traditional unity-gain buffers-to achieve rail-to-rail output swing while maintaining stability into 5 kΩ loads. Its topology includes dual feed-forward compensation (Cf and Cff) and a push-pull output stage capable of sourcing/sinking ≥16 mA at V+ = 5 V.
Designed for high-impedance applications, it delivers 3 mV max input offset voltage, 42 nV/√Hz input voltage noise at 1 kHz, and 0.01% THD at 1 kHz with 100 kΩ load-performance matching bipolar op amps while consuming <1 mW total quiescent power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +4.75 V to +15.5 V - supports single-supply operation in portable and industrial systems without split rails. |
| Input Bias Current | 2 fA typical - enables femtoampere-level leakage-critical designs such as photodiode transimpedance amplifiers. |
| Open-Loop Gain | 120 dB into 100 kΩ - ensures ≤0.0025% gain error in precision buffer and amplifier configurations. |
| Slew Rate | 0.11 V/μs - sufficient for 1 kHz sine-wave generation and low-frequency active filtering without distortion. |
| Input Offset Voltage | 3 mV max - allows direct DC-coupled interfacing with 12-bit ADCs without external trimming. |
| Output Swing | 0.004 V above V− and 0.05 V below V+ (RL = 100 kΩ, V+ = 5 V) - maximizes dynamic range in single-supply data acquisition. |
| Quiescent Current | 160 μA per amplifier - enables four-channel analog front-end operation at <650 μW total supply power. |
Pinout & Package
Package: 14-pin SOIC (D0014A), 3.9 mm × 8.75 mm body, 1.27 mm pitch, 1.75 mm max height, RoHS-compliant Sn lead finish, MSL Level-1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node requiring guard ring layout; accepts signals down to V− (ground in single-supply). |
| 2 | Non-Inverting Input (Amplifier A) | Same input structure as Pin 1; used for follower, summing, or differential configurations. |
| 3 | Output (Amplifier A) | Rail-to-rail capable output; drives capacitive loads up to ~100 pF with series resistor compensation. |
| 4 | V− (Ground / Negative Supply) | Reference for all four amplifiers; must be low-impedance and decoupled near device. |
| 5 | Non-Inverting Input (Amplifier B) | Independent input for second amplifier; shares same CMOS input stage characteristics as Pins 1 & 2. |
| 6 | Inverting Input (Amplifier B) | Matched to Pin 5; supports dual-channel instrumentation amplifier topologies. |
| 7 | Output (Amplifier B) | Electrically isolated from other outputs; supports independent feedback networks. |
| 8 | Output (Amplifier C) | Third channel output; usable for multi-stage filtering or reference buffering. |
| 9 | Inverting Input (Amplifier C) | Part of third amplifier pair; identical electrical specs to Pins 1 and 6. |
| 10 | Non-Inverting Input (Amplifier C) | Enables three independent high-Z gain stages on one die. |
| 11 | V+ (Positive Supply) | Power rail for all amplifiers; requires 0.1 μF ceramic bypass capacitor placed ≤2 mm from Pin 11. |
| 12 | Non-Inverting Input (Amplifier D) | Fourth amplifier input; supports quad-channel signal conditioning in compact layouts. |
| 13 | Inverting Input (Amplifier D) | Matches input offset and bias current specs across all four channels. |
| 14 | Output (Amplifier D) | Final output; verified stable into 5 kΩ loads with ≤0.35 V headroom at V+ = 15 V. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range in single-supply systems - e.g., 0.004 V to 4.95 V output with 5 V supply and 100 kΩ load. |
| Ultra-low input bias current (2 fA) | Enables >1 TΩ effective input impedance - critical for electrometer-grade current-to-voltage conversion and long-term integrators. |
| Micropower operation (160 μA per amp) | Supports always-on sensor nodes with four-channel analog front ends drawing <650 μW total. |
| Specified for 5 kΩ and 100 kΩ loads | Guarantees rail-to-rail swing and gain accuracy across both high-Z and moderate-Z applications without external boosters. |
| Input common-mode range includes V− | Allows ground-referenced inputs in single-supply systems - eliminates need for level-shifting circuitry in DC-coupled sensors. |
| Low offset voltage drift (1.3 μV/°C) | Ensures <15 μV total drift over −40°C to +85°C - suitable for uncalibrated industrial temperature sensing front ends. |
Applications
| Photodiode Current-to-Voltage Converter | Precision Long-Term Integrator |
|---|---|
|
Use Scenario: Converting weak photocurrents (pA–nA) from scientific or medical photodiodes into measurable voltage signals under ambient light or dark conditions. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-low input bias current and rail-to-rail output to maximize SNR and dynamic range. Use Value: 2 fA input bias current minimizes dark-current-induced offset errors; 120 dB gain ensures stable closed-loop transimpedance accuracy up to 1 GΩ feedback resistors. |
Use Scenario: Accumulating charge from low-leakage sources (e.g., piezoelectric sensors, radiation detectors) over minutes to hours with minimal drift. IC Role / Device Role / Timing Role: Integrator core with femtoampere input leakage and sub-mV offset to preserve integration accuracy over time. Use Value: 3 mV max VOS and 1.3 μV/°C drift limit integrated error to <10 mV after 1-hour integration at 25°C; rail-to-rail output avoids saturation during long accumulation. |
| High-Impedance Preamplifier for Electrochemical Sensors | Single-Supply Active Filter (10 Hz Bandpass) |
|
Use Scenario: Amplifying microvolt-level signals from pH, ion-selective, or glucose electrodes without loading the high-impedance electrode interface. IC Role / Device Role / Timing Role: First-stage buffer with >1 TΩ input resistance and low noise to preserve signal integrity before further processing. Use Value: Input resistance >1 TΩ prevents electrode polarization; 42 nV/√Hz noise ensures >60 dB SNR for 100 μV signals at 1 kHz; rail-to-rail output interfaces directly with 12-bit SAR ADCs. |
Use Scenario: Filtering bio-signal or environmental monitoring data (e.g., ECG, seismic) at very low frequencies with minimal phase distortion. IC Role / Device Role / Timing Role: Quad-op-amp implementation of 10 Hz bandpass filter (Q = 2.1, gain = −8.8) using single 5 V supply. Use Value: Guaranteed 0.01% THD at 1 kHz ensures clean passband response; rail-to-rail swing accommodates ±2.25 V peak output; micropower operation extends battery life in portable monitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad CMOS operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L4CDR | Higher input offset (10 mV max), higher bias current (60 pA), lower gain (100 dB), but wider supply range (3 V to 16 V). | Better suited for cost-sensitive, non-precision applications where femtoampere bias current is unnecessary. | Select TLC27L4CDR when budget constraints outweigh ultra-low-input-bias requirements and 10 mV VOS is acceptable. |
| LMC6064IMX/NOPB | Lower input bias current (0.02 fA), lower offset drift (0.35 μV/°C), but slower slew rate (0.015 V/μs) and no guaranteed 5 kΩ load drive. | Ideal for ultra-high-impedance, low-frequency (<100 Hz) applications like electrophysiology, where speed is secondary to leakage control. | Choose LMC6064IMX/NOPB for sub-femtoampere leakage-critical systems operating below 100 Hz; avoid for >1 kHz active filters or fast settling integrators. |
Compared with TLC27L4CDR and LMC6064IMX/NOPB, the LPC660AIM/NOPB uniquely balances femtoampere input bias, rail-to-rail output, 0.11 V/μs slew rate, and guaranteed 5 kΩ load drive - making it optimal for precision single-supply systems needing both speed and leakage immunity.
Availability
LPC660AIM/NOPB is available at Aetrix Electronics and suitable for high-impedance sensor interfaces, battery-powered instrumentation, and precision analog front ends requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LPC660AIM/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 excellence.
The LPC660AIM/NOPB belongs to TI's legacy precision CMOS op amp family, engineered specifically for ultra-low-power, high-input-impedance applications in single-supply industrial, medical, and test equipment.
FAQ
What is the maximum capacitive load the LPC660AIM/NOPB can drive without oscillation?
The LPC660AIM/NOPB is not inherently stable into large capacitive loads. It may oscillate with >100 pF when configured as a unity-gain follower. Stability can be restored using a 50 Ω–100 Ω series resistor at the output and a 5 pF–10 pF feedback capacitor from inverting input to output. With this compensation, loads up to ~1 nF are tolerable. The LPC660AIM/NOPB datasheet Figure 23 and Figure 24 provide empirical stability boundaries versus capacitance and gain.
Does the LPC660AIM/NOPB support true rail-to-rail input common-mode range?
No - the LPC660AIM/NOPB features rail-to-rail *output* swing, but its input common-mode range extends only to V− (including ground) and up to V+ − 1.9 V (min) at V+ = 5 V. It does not accept inputs at V+; attempting to do so risks phase reversal or increased offset. This limitation is explicitly defined in the "Input Common Mode Voltage Range" table of the LPC660AIM/NOPB datasheet.
Can the LPC660AIM/NOPB operate from a 3.3 V supply?
No - the LPC660AIM/NOPB has a minimum specified supply voltage of +4.75 V. Operation below this violates the Absolute Maximum Ratings and is not characterized. For 3.3 V single-supply applications, consider TI's LMC6044 or MCP6004 families, which are explicitly rated down to 1.8 V or 2.7 V respectively. The LPC660AIM/NOPB must be used within its 4.75 V–15.5 V operating range.
Is the LPC660AIM/NOPB pin-compatible with the LPC660IM/NOPB?
Yes - both LPC660AIM/NOPB and LPC660IM/NOPB use identical 14-pin SOIC (D0014A) packaging and share identical pinout, electrical specifications, and thermal characteristics. The only difference is temperature grade: LPC660AIM/NOPB is rated for −40°C to +85°C (industrial), while LPC660IM/NOPB carries the same rating. They are functionally and mechanically interchangeable in PCB layouts.
How does the LPC660AIM/NOPB achieve rail-to-rail output with CMOS technology?
The LPC660AIM/NOPB uses a custom compound integrator output stage that eliminates the conventional unity-gain buffer. Instead, the output is taken directly from the integrator's push-pull stage, fed forward via dedicated compensation paths (Cf and Cff). This architecture allows full swing to both rails while maintaining stability into 5 kΩ loads - a departure from standard CMOS op amp topologies, as detailed in Application Hints Section "AMPLIFIER TOPOLOGY" of the LPC660AIM/NOPB datasheet.
LPC660AIM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 0.11V/µs
- Gain Bandwidth Product:
- 350 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.002 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 160µA (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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LPC660AIM/NOPB FAQ
1.How can I place an order for LPC660AIM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC660AIM/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 LPC660AIM/NOPB reliable?
The price and inventory of LPC660AIM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC660AIM/NOPB is usually 5 days.
3.What payment methods are accepted for LPC660AIM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC660AIM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC660AIM/NOPB?
LPC660AIM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC660AIM/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 LPC660AIM/NOPB?
For technical support, including LPC660AIM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC660AIM/NOPB requirements.
6.How does Aetrix verify that LPC660AIM/NOPB is sourced from the original manufacturer or authorized distributors?
All LPC660AIM/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 LPC660AIM/NOPB meets industry standards.
7.What is the process for return or replacement of LPC660AIM/NOPB?
All LPC660AIM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LPC660AIM/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 LPC660AIM/NOPB part is unused and in its original packaging.
Return procedure for LPC660AIM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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