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Texas Instruments LM6144AIN
- Part No.:
- LM6144AIN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LM6144AIN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,024
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Product details
Overview
LM6144AIN from Texas Instruments is a quad rail-to-rail input-output operational amplifier optimized for low-voltage, battery-powered instrumentation. It delivers 17MHz gain-bandwidth at 50kHz, 30V/μs slew rate, 650μA/amplifier quiescent current, rail-to-rail CMVR (−0.25V to 5.25V at VS = 5V), and 107dB CMRR - enabling high-precision signal conditioning in single-supply depth sounders and barcode scanners.
For engineers reviewing the LM6144AIN datasheet, LM6144AIN pinout, LM6144AIN application, or LM6144AIN equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The LM6144AIN employs a patented dual-input-stage architecture (NPN + PNP) to achieve true rail-to-rail input operation beyond supply rails (−0.25V to +5.25V at 5V), eliminating common-mode range limitations in single-supply systems. Its slew-boosted output stage enables 30V/μs transient response while maintaining stability into 100pF capacitive loads without external compensation.
Designed for wide supply flexibility (2.7V–24V), it sustains 17MHz GBW and 107dB CMRR across voltage extremes - with PSRR of 87dB at 24V and open-loop gain of 500 V/mV into 10kΩ - making it suitable for precision analog front-ends where supply rejection and dynamic range are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 17MHz at 50kHz - supports stable closed-loop gain ≥100 up to ~170kHz in sensor signal chains |
| Slew Rate | 30V/μs - enables full-scale 4V output transitions in ≤133ns, critical for pulse-amplified depth-sounder echoes |
| Input CMVR | −0.25V to 5.25V at VS = 5V - accepts inputs 250mV below negative rail and 250mV above positive rail, simplifying level-shifting |
| Quiescent Current | 650μA per amplifier - draws only 2.6mA total for all four op-amps, extending battery life in portable instruments |
| CMRR | 107dB - rejects >99.999% of common-mode noise on differential sensor inputs at DC–1kHz |
| Output Swing | Within 30mV of rails (RL = 100kΩ) - preserves >99% of available dynamic range at 5V supply |
| Supply Range | 2.7V to 24V - operates from single Li-ion cell (3.0V nominal) up to industrial 24V bus without redesign |
Pinout & Package
LM6144AIN is housed in a 14-pin plastic DIP (NFF) package measuring 19.177mm × 6.35mm, rated for −40°C to +85°C ambient operation. Pinout conforms to standard quad op-amp configuration with independent power, input, and output terminals per channel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives ADC input or transducer load with rail-to-rail swing |
| 2 | IN− A | Inverting input for Channel A - accepts differential signals referenced to ground or mid-supply |
| 3 | IN+ A | Non-inverting input for Channel A - used for unity-gain buffer or instrumentation amp front-end |
| 4 | V− | Negative supply rail - connects to system ground in single-supply configurations |
| 5 | IN+ B | Non-inverting input for Channel B - pairs with IN− B for second differential path |
| 6 | IN− B | Inverting input for Channel B - matches Channel A for matched gain/phase in dual-path designs |
| 7 | OUT B | Amplifier B output - provides independent signal path for multi-channel sensing |
| 8 | OUT C | Amplifier C output - enables 3-op-amp instrumentation amplifier topology with rail-to-rail I/O |
| 9 | IN− C | Inverting input for Channel C - used as differential stage input in INA configurations |
| 10 | IN+ C | Non-inverting input for Channel C - maintains high-Z input for precision bridge sensors |
| 11 | V+ | Positive supply rail - accepts 2.7V–24V; decoupling capacitor required near pin |
| 12 | IN+ D | Non-inverting input for Channel D - supports auxiliary reference or calibration path |
| 13 | IN− D | Inverting input for Channel D - configurable as summing node or feedback point |
| 14 | OUT D | Amplifier D output - provides fourth independent channel for system monitoring or redundancy |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input CMVR beyond supplies | Operates with inputs down to −0.25V and up to +5.25V at 5V supply - eliminates need for level-shifting circuitry in single-supply sensor interfaces |
| Slew-boosted output architecture | Delivers 30V/μs slew rate without oscillation into 100pF loads - removes requirement for isolation resistors in ADC driver applications |
| Low quiescent current per channel | 650μA/amplifier enables full quad operation at <2.6mA - extends runtime in AA-battery-powered barcode scanners beyond 100 hours |
| High PSRR (87dB) at 24V | Maintains 13.5μV/V supply-induced offset drift - ensures stable baseline in industrial 24V-powered instrumentation |
| 107dB CMRR at DC–1kHz | Rejects >316,000:1 common-mode interference on bridge sensor outputs - improves resolution in strain-gauge-based load cells |
Applications
| Depth Sounder Signal Conditioning | ADC Input Buffering |
|---|---|
Use Scenario: Amplifies weak, high-frequency echo returns (20–200kHz) from underwater transducers in battery-powered fish finders. IC Role / Device Role / Timing Role: Quad-channel signal conditioner: Channels A/B form differential receiver pair; Channel C buffers reference; Channel D drives display driver. Use Value: Rail-to-rail I/O preserves full 4.97Vpp dynamic range at 5V supply; 17MHz GBW resolves sub-microsecond echo timing; 650μA/channel minimizes battery drain during continuous ping operation. | Use Scenario: Drives SAR and sigma-delta ADC inputs in portable data loggers with ±10V sensor ranges scaled to 0–5V. IC Role / Device Role / Timing Role: Single-supply buffer isolating high-impedance sensor outputs from ADC sampling capacitance. Use Value: 107dB CMRR rejects power-supply-coupled noise during conversion; rail-to-rail output ensures full-scale ADC utilization; 30V/μs slew rate settles 12-bit codes in <500ns. |
| Rail-to-Rail Instrumentation Amp | Wireless Modem Baseband Filtering |
Use Scenario: Forms 3-op-amp instrumentation amplifier for single-supply medical ECG front-ends requiring >100dB CMR and 0–5V output swing. IC Role / Device Role / Timing Role: Channels A/B act as matched input buffers; Channel C serves as difference amplifier with gain-setting resistors. Use Value: Eliminates precision resistor arrays by using high-Z buffers - reduces CMR degradation from resistor mismatch; rail-to-rail I/O enables direct interface to 5V ADC without level shifters. | Use Scenario: Filters and amplifies baseband I/Q signals (DC–5MHz) in handheld RFID readers and Bluetooth LE modules. IC Role / Device Role / Timing Role: Dual-channel active filter (LPF/HPF) and gain stage preceding RF upconversion. Use Value: 17MHz GBW supports flat group delay up to 5MHz; 87dB PSRR prevents supply ripple from modulating RF carrier; low 16nV/√Hz noise maintains SNR >70dB in 1MHz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Lower GBW (6.4MHz), higher IQ (550μA/channel), same 14-pin SOIC package | Insufficient bandwidth for >100kHz depth-sounder echo processing | Prefer LM6144AIN where >10MHz closed-loop bandwidth or 30V/μs slew is required |
| OPA4340UA | Higher precision (50μV VOS), lower noise (11nV/√Hz), but limited CMVR (to rails only, not beyond) | Cannot accept inputs below negative rail - requires external biasing for true single-supply sensor interfaces | Select LM6144AIN when input signals exceed supply rails or when >17MHz GBW is mandatory |
Compared with TLV2464IDR and OPA4340UA, LM6144AIN uniquely combines rail-to-rail input *beyond* supplies, 17MHz GBW, and 30V/μs slew in a quad configuration - making it irreplaceable in battery-powered ultrasonic time-of-flight systems where signal fidelity, speed, and supply headroom are simultaneously constrained.
Availability
LM6144AIN is available at Aetrix Electronics and suitable for battery-operated instrumentation, depth sounders/fish finders, and barcode scanners requiring stable component supply and long-term industrial availability.
Supply support for LM6144AIN 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 over 90 years of innovation in precision amplifiers and power management ICs.
The LM614x family was designed specifically for low-power, single-supply precision analog signal conditioning - targeting portable test equipment, industrial sensors, and medical devices where rail-to-rail performance and microamp-level quiescent current are essential.
FAQ
What is the maximum supply voltage rating for LM6144AIN?
The absolute maximum supply voltage for LM6144AIN is 33V, as specified in the Absolute Maximum Ratings table. Operation above this voltage risks permanent damage. The recommended operating range is 2.7V to 32V, with full electrical specifications guaranteed from −40°C to +85°C ambient temperature. At 24V supply, LM6144AIN delivers 18MHz GBW and 87dB PSRR - confirming robust high-voltage performance without derating.
Does LM6144AIN support true rail-to-rail input operation beyond the supply rails?
Yes, LM6144AIN supports true rail-to-rail input operation beyond the supply rails: its common-mode input voltage range extends to −0.25V below V− and +0.25V above V+ at 5V supply. This is enabled by its patented dual-input-stage (NPN + PNP) architecture. At 24V supply, the CMVR expands to 0V–24V - allowing direct connection of sensors whose outputs may transiently exceed the supply, such as piezoelectric transducers in depth sounders.
What is the typical output voltage swing for LM6144AIN at 5V supply and 10kΩ load?
At VS = 5V and RL = 10kΩ, LM6144AIN delivers a typical output swing within 40mV of the positive rail and 50mV of the negative rail - i.e., 0.04V to 4.96V. This rail-to-rail capability preserves >99% of available dynamic range, critical for maximizing ADC resolution in battery-powered instrumentation. Performance is maintained across temperature (−40°C to +85°C), with worst-case swing degrading to 0.1V–4.9V under full thermal stress.
Can LM6144AIN drive capacitive loads without external compensation?
Yes, LM6144AIN is explicitly characterized to drive large capacitive loads without oscillation. Its slew-boosted output stage and internal compensation enable stable operation into 100pF loads - a key advantage over legacy op-amps that require series isolation resistors when driving ADC input capacitance. This eliminates added noise, gain error, and board space in data-acquisition systems using LM6144AIN as an ADC buffer.
What is the input offset voltage specification for LM6144AIN over temperature?
LM6144AIN has a maximum input offset voltage of 2.2mV over the full operating temperature range (−40°C to +85°C) for the 'AI' grade. At 25°C, typical VOS is 1.0mV, with drift of only 3µV/°C. This low drift ensures minimal baseline shift in precision instrumentation - for example, in a 3-op-amp instrumentation amplifier using LM6144AIN, total system offset remains under 7mV across temperature, supporting 12-bit accuracy without trimming.
LM6144AIN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 25V/µs
- Gain Bandwidth Product:
- 18 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 174 nA
- Voltage - Input Offset:
- 1.3 mV
- Current - Supply:
- 750µA (x4 Channels)
- Current - Output / Channel:
- 22 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 24 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
LM6144AIN FAQ
1.How can I place an order for LM6144AIN through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6144AIN 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 LM6144AIN reliable?
The price and inventory of LM6144AIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6144AIN is usually 5 days.
3.What payment methods are accepted for LM6144AIN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6144AIN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6144AIN?
LM6144AIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6144AIN 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 LM6144AIN?
For technical support, including LM6144AIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6144AIN requirements.
6.How does Aetrix verify that LM6144AIN is sourced from the original manufacturer or authorized distributors?
All LM6144AIN 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 LM6144AIN meets industry standards.
7.What is the process for return or replacement of LM6144AIN?
All LM6144AIN units undergo pre-shipment inspection (PSI). If there is an issue with LM6144AIN, 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 LM6144AIN part is unused and in its original packaging.
Return procedure for LM6144AIN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM6144AIN Tags
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