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Texas Instruments LM6144AIM
- Part No.:
- LM6144AIM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM6144AIM.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,129
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Product details
Overview
LM6144AIM 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, 30V/μs slew rate, 650μA per amplifier quiescent current, ±0.25V to +5.25V common-mode input range (at 5V supply), and rail-to-rail output swing - enabling high-fidelity signal conditioning in depth sounders and barcode scanners.
For engineers reviewing the LM6144AIM datasheet, LM6144AIM pinout, LM6144AIM application, or LM6144AIM equivalent, key selection considerations include its 2.7V–24V supply flexibility, 107dB CMRR, 87dB PSRR, ability to drive capacitive loads without oscillation, and suitability for single-supply precision buffering of ADC inputs and instrumentation amplifiers.
Technical Context
The LM6144AIM employs patented input stage topology combining NPN and PNP differential pairs to achieve true rail-to-rail input operation beyond the supply rails (−0.25V to +5.25V at 5V), eliminating common-mode voltage headroom constraints. Its slew-boosted output stage enables 30V/μs transient response while maintaining stability into ≥100pF capacitive loads.
This architecture supports wide-supply operation (2.7V–24V) with consistent 17MHz GBW across voltages and low distortion (0.003% THD+N at 10kHz). The device's 126MΩ common-mode input resistance and 100–270V/mV open-loop gain ensure high-precision DC performance in sensor interfaces and 3-op-amp instrumentation amplifier topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 17MHz at 50kHz (typ); enables stable unity-gain operation up to ~17MHz and closed-loop bandwidth >1MHz with moderate gain. |
| Slew Rate | 30V/μs (typ); supports fast settling of large-signal transients in ultrasonic receiver chains and ADC drivers. |
| Supply Current | 650μA per amplifier (typ at 5V); allows four-channel precision amplification on <3mA total, critical for multi-sensor battery systems. |
| Input Common-Mode Range | −0.25V to +5.25V at 5V supply; accepts signals below ground or above V+, simplifying level-shifting in single-supply front-ends. |
| Output Swing (RL = 100kΩ) | Within 30mV of positive rail and 45mV of negative rail (typ); maximizes dynamic range in low-voltage data acquisition. |
| CMRR / PSRR | 107dB / 87dB (typ at 5V); rejects power supply noise and common-mode interference in noisy industrial or automotive environments. |
| Input Offset Voltage | 1mV (typ), 2.2mV (max over −40°C to +85°C); ensures sub-10μV/°C drift-critical DC accuracy in strain gauge or thermocouple amps. |
Pinout & Package
LM6144AIM is housed in a 14-pin SOIC (D package) with 8.65mm × 3.91mm body size and standard quad op-amp pinout. Thermal resistance RθJA is 82.48°C/W, supporting operation up to +85°C ambient without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 12 | Inverting Input (−) | High-impedance node for feedback network connection; accepts signals from −0.25V to V+ + 0.25V. |
| 2, 6, 10, 13 | Non-inverting Input (+) | High-impedance node for signal source; same rail-to-rail CMVR as inverting input. |
| 3, 7, 11, 14 | Output | Rail-to-rail swing capability; drives 100kΩ load within 30mV of rails, 10kΩ load within 40mV. |
| 4 | V− (Ground/Negative Supply) | Reference for all internal stages; must be connected to system ground or negative rail. |
| 14 | V+ (Positive Supply) | Power input for all four amplifiers; supports 2.7V–24V operation with 87dB PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input CMVR | Extends 0.25V beyond both supply rails, removing need for external level-shifting in single-supply sensor interfaces. |
| Rail-to-rail output swing | Delivers full dynamic range at low supply voltages (e.g., 4.97V output swing from 5V rail), maximizing SNR in ADC buffer stages. |
| 17MHz gain-bandwidth | Enables high-speed closed-loop configurations (e.g., 10× gain with >1.5MHz bandwidth) without sacrificing DC precision. |
| Stable into ≥100pF loads | Eliminates external isolation resistors in capacitive DAC or cable-driven applications, reducing component count and board space. |
| Low 650μA/amplifier IQ | Permits continuous four-channel amplification on coin-cell batteries for >1 year in intermittent-use instrumentation. |
Applications
| Depth Sounder Front-End | ADC Input Buffer |
|---|---|
Use Scenario: Amplifying weak, high-frequency echo pulses (20–200kHz) from piezoelectric transducers in portable fish finders. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate preamplifier with rail-to-rail output driving analog AGC and filter stages. Use Value: 30V/μs slew rate preserves pulse fidelity; 17MHz GBW supports clean amplification of ultrasonic bursts without phase distortion. |
Use Scenario: Driving SAR or delta-sigma ADC inputs in battery-powered data loggers with 0–5V single-supply rails. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating high-impedance sensors from ADC sampling kickback. Use Value: 126MΩ input resistance prevents sensor loading; rail-to-rail I/O ensures full-scale utilization of 12–16-bit ADCs. |
| Rail-to-Rail Instrumentation Amp | Barcode Scanner Signal Chain |
Use Scenario: Building a 3-op-amp INA using LM6144AIM's A/B channels as input buffers and C/D as difference amplifier. IC Role / Device Role / Timing Role: Dual-input buffer stage providing >100MΩ ZIN, eliminating precision resistor matching requirements. Use Value: Rail-to-rail I/O enables full common-mode rejection across 0–5V input ranges; 107dB CMRR maintains accuracy in noisy EMI environments. |
Use Scenario: Conditioning low-amplitude, high-frequency analog signals from CCD or CMOS image sensors in handheld scanners. IC Role / Device Role / Timing Role: High-speed transimpedance amplifier and post-filter gain stage before digitization. Use Value: 17MHz GBW supports >5MHz video bandwidth; 0.003% THD+N ensures accurate bar-width decoding at high scan rates. |
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/ch), 1.8V–6V supply range; no slew-boost architecture. | Better suited for ultra-low-voltage (1.8V) sensor nodes where speed is secondary to power. | Select TLV2464IDR only when operating below 2.7V or when lower cost outweighs bandwidth needs. |
| OPA4340UA | Higher precision (125μV VOS max), lower noise (12nV/√Hz), but slower (5.5MHz GBW) and higher IQ (750μA/ch). | Ideal for DC-critical applications like medical sensor front-ends where offset and drift dominate over speed. | Choose OPA4340UA when sub-200μV offset and <1μV/°C drift are mandatory, accepting bandwidth trade-off. |
Compared with TLV2464IDR and OPA4340UA, LM6144AIM uniquely balances 17MHz bandwidth, 30V/μs slew rate, and 650μA/ch IQ across 2.7V–24V supplies - making it optimal for battery-powered, medium-speed signal chains requiring rail-to-rail I/O and robust capacitive load drive.
Availability
LM6144AIM is available at Aetrix Electronics and suitable for depth sounders, barcode scanners, and portable instrumentation requiring stable component supply, long-lifecycle availability, and guaranteed traceable sourcing.
Supply support for LM6144AIM 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 innovation in precision amplifiers and signal chain solutions.
The LM614x family was designed specifically for battery-operated instrumentation demanding rail-to-rail I/O, wide supply range, and low power - addressing limitations of earlier op amps in portable test equipment and sensing systems.
FAQ
What supply voltage range does the LM6144AIM support?
The LM6144AIM operates from 2.7V to 24V single-supply or split-supply configurations. Absolute maximum rating is 33V. At 2.7V, it maintains 9MHz GBW and rail-to-rail output swing; at 24V, GBW increases to 18MHz. This wide range makes LM6144AIM suitable for both coin-cell-powered handheld devices and industrial 24V systems.
Does the LM6144AIM have true rail-to-rail input capability?
Yes - the LM6144AIM features a patented complementary NPN/PNP input stage that extends the common-mode input voltage range to −0.25V below V− and +0.25V above V+ at 5V supply. This exceeds the supply rails, eliminating clipping when interfacing with signals referenced to ground or external bias networks, a key advantage over conventional rail-to-rail input op amps.
Can the LM6144AIM drive capacitive loads without external compensation?
Yes - the LM6144AIM's slew-boosted output stage provides inherent stability into ≥100pF capacitive loads without requiring series isolation resistors. This is confirmed in TI's datasheet Figure 5-19 (Gain/Phase vs Load) and application note SNOS726E Section 6.2.2, enabling direct connection to ADC inputs, coaxial cables, or LCD column drivers.
What is the typical input offset voltage and drift of the LM6144AIM?
The LM6144AIM has a typical input offset voltage of 1mV at 25°C, with a maximum of 2.2mV over −40°C to +85°C. Its offset voltage drift is 3µV/°C (typ), ensuring minimal thermal error in precision measurement circuits. These values are specified for the "AI" grade variant and verified in Electrical Characteristics Table 5.6 of the official TI datasheet SNOS726E.
How does the LM6144AIM compare to the LM6144BINFF in terms of performance and package?
The LM6144AIM uses a 14-pin SOIC (D) package (8.65mm × 3.91mm), while LM6144BINFF uses a 14-pin PDIP (NFF) package (19.177mm × 6.35mm). Electrically identical, both share the same 17MHz GBW, 30V/μs slew rate, and rail-to-rail I/O. However, LM6144AIM's SOIC offers superior thermal performance (RθJA = 82.48°C/W vs 81°C/W) and is preferred for surface-mount, space-constrained designs.
LM6144AIM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LM6144AIM FAQ
1.How can I place an order for LM6144AIM through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6144AIM 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 LM6144AIM reliable?
The price and inventory of LM6144AIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6144AIM is usually 5 days.
3.What payment methods are accepted for LM6144AIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6144AIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6144AIM?
LM6144AIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6144AIM 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 LM6144AIM?
For technical support, including LM6144AIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6144AIM requirements.
6.How does Aetrix verify that LM6144AIM is sourced from the original manufacturer or authorized distributors?
All LM6144AIM 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 LM6144AIM meets industry standards.
7.What is the process for return or replacement of LM6144AIM?
All LM6144AIM units undergo pre-shipment inspection (PSI). If there is an issue with LM6144AIM, 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 LM6144AIM part is unused and in its original packaging.
Return procedure for LM6144AIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM6144AIM Tags
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