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Texas Instruments LM6142AIMX
- Part No.:
- LM6142AIMX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM6142AIMX.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,751
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Product details
Overview
LM6142AIMX from Texas Instruments is a dual-channel 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 full dynamic range in single-supply systems such as depth sounders and barcode scanners.
For engineers reviewing the LM6142AIMX datasheet, LM6142AIMX pinout, LM6142AIMX application, or LM6142AIMX equivalent, key selection criteria include its guaranteed rail-to-rail operation at 2.7V–24V supply, low-input-bias-current PNP/NPN composite input stage, high CMRR (107dB), and stable drive capability into capacitive loads without external compensation.
Technical Context
The LM6142AIMX employs a patented composite input stage combining PNP and NPN transistors to achieve true rail-to-rail common-mode input voltage range beyond the supply rails (−0.25V to +5.25V at VS = 5V) while maintaining low input bias current (250nA typ). Its slew-boosted architecture enables 30V/μs slew rate without sacrificing stability into ≥100pF loads.
This dual op-amp integrates internal frequency compensation and operates across 2.7V–24V supplies with thermal metrics validated for SOIC-8 (RθJA = 127.1°C/W). It features 107dB CMRR, 87dB PSRR, and 108dB open-loop gain (RL = 10kΩ), supporting precision signal conditioning in noise-sensitive analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 17MHz at 50kHz (typ); enables stable unity-gain operation up to ~17MHz with minimal phase margin degradation. |
| Slew rate | 30V/μs (typ); supports fast settling of large-signal transients in ADC drivers and active filters. |
| Supply voltage range | 2.7V to 24V; allows direct use in 3.3V microcontroller systems and 24V industrial sensors without level-shifting. |
| Input common-mode range | −0.25V to +5.25V at VS = 5V; eliminates input clamping concerns when interfacing with signals extending below ground or above VCC. |
| Output swing (RL = 100kΩ) | Within 30mV of positive rail and 45mV of negative rail (typ); preserves >99% of available dynamic range in low-voltage designs. |
| Quiescent current | 650μA per amplifier (typ); extends battery life in portable instrumentation where power budget is constrained to <1.5mA per channel. |
| CMRR | 107dB (typ); rejects common-mode noise in differential sensor interfaces like strain gauges and thermocouples. |
Pinout & Package
LM6142AIMX is packaged in an 8-pin SOIC (D package), body size 4.90mm × 3.91mm, with standard dual-op-amp pinout compatible with industry layout conventions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input (Amplifier A) | High-impedance node accepting differential signal; biased by internal PNP/NPN composite stage for rail-to-rail CMVR. |
| 2 | Non-inverting input (Amplifier A) | Accepts input signals down to −0.25V below V−; enables single-supply sensing of grounded-referenced sensors. |
| 3 | Output (Amplifier A) | Delivers rail-to-rail swing with 100kΩ load; capable of sourcing/sinking ≥10mA for driving ADC reference buffers or active filters. |
| 4 | Negative supply (V−) | Ground or negative rail connection; supports true single-supply operation when tied to 0V. |
| 5 | Non-inverting input (Amplifier B) | Independent input stage identical to Pin 2; allows dual-channel signal conditioning without crosstalk (130dB isolation). |
| 6 | Inverting input (Amplifier B) | Matches Pin 1 performance; enables matched gain configurations in instrumentation amplifier topologies. |
| 7 | Output (Amplifier B) | Functionally identical to Pin 3; supports independent dual-path signal processing in compact PCB layouts. |
| 8 | Positive supply (V+) | Accepts 2.7V–24V; internal regulation ensures consistent GBW and slew rate across full supply range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input CMVR | Extends −0.25V below V− and +0.25V above V+ at 5V supply, eliminating external level-shifting for bipolar sensor outputs. |
| Rail-to-rail output swing | Delivers ≤30mV from rails into 100kΩ, maximizing SNR in 3.3V ADC interfaces without headroom loss. |
| Slew-boosted architecture | Enables 30V/μs slew rate while maintaining stability into ≥100pF capacitive loads-no external compensation required. |
| Low quiescent current | 650μA per amplifier at 5V allows two channels to operate within 1.3mA total, critical for coin-cell–powered devices. |
| High CMRR (107dB) | Rejects power-supply noise and EMI in noisy environments like motor-driven depth sounders or wireless comms modules. |
Applications
| Depth Sounder Signal Conditioning | Barcode Scanner Analog Front-End |
|---|---|
Use Scenario: Amplifying weak, low-frequency echo return signals from piezoelectric transducers in marine depth sounders powered by 9V batteries. IC Role / Device Role / Timing Role: Dual-channel op-amp providing programmable gain and DC offset correction before ADC sampling. Use Value: Rail-to-rail input accepts transducer signals near ground; 17MHz GBW supports clean amplification of 100kHz pulse echoes without phase distortion. |
Use Scenario: Buffering and conditioning analog photodiode current outputs in handheld laser barcode scanners operating from 3.3V Li-ion cells. IC Role / Device Role / Timing Role: Transimpedance amplifier and post-amplifier stage converting photocurrent to digitizable voltage. Use Value: 650μA/channel quiescent current extends scan session duration; rail-to-rail output drives 12-bit SAR ADC inputs fully across 0–3.3V range. |
| Battery-Powered Instrumentation Amp | ADC Input Driver for Portable DMMs |
Use Scenario: Building a 3-op-amp instrumentation amplifier for portable multimeters using single 9V supply. IC Role / Device Role / Timing Role: Two LM6142AIMX amplifiers serve as matched input buffers in INA topology, third as difference amplifier. Use Value: >100MΩ input impedance preserves sensor accuracy; rail-to-rail I/O eliminates clipping on low-amplitude mV-range measurements. |
Use Scenario: Driving the input of a 16-bit sigma-delta ADC in a handheld digital multimeter with 2.7V–3.6V battery supply. IC Role / Device Role / Timing Role: Precision buffer isolating ADC from source impedance variations and providing low-noise, low-distortion signal path. Use Value: 16nV/√Hz input voltage noise and 0.003% THD+N ensure measurement fidelity; stable into 10nF ADC input capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Lower GBW (6.4MHz), higher IQ (550μA/channel), narrower CMVR (to V− + 0.1V), no slew-boost architecture. | Less suitable for >100kHz signal chains or ultra-low-power battery systems requiring >10MHz bandwidth. | Prefer TLV2462IDR only when cost sensitivity outweighs bandwidth and rail-to-rail input requirements. |
| OPA2333AIDR | Zero-drift architecture, lower VOS (2μV max), higher IQ (17μA/channel), limited supply range (1.8V–5.5V), no rail-to-rail input. | Better for DC-critical applications (e.g., precision weigh scales), but incompatible with 12V/24V sensor interfaces or wide-VS designs. | Select OPA2333AIDR only when microvolt-level offset stability is mandatory and supply is strictly ≤5.5V. |
Compared with TLV2462IDR and OPA2333AIDR, LM6142AIMX uniquely balances 17MHz bandwidth, true rail-to-rail I/O, 2.7V–24V operation, and sub-1mA total quiescent current - making it the only option among the three viable for battery-powered depth sounders, multi-supply industrial sensors, and wide-dynamic-range portable instrumentation.
Availability
LM6142AIMX is available at Aetrix Electronics and suitable for battery-operated instrumentation, depth sounders/fish finders, and barcode scanners requiring stable component supply across extended temperature ranges (−40°C to +85°C) and long production lifecycles.
Supply support for LM6142AIMX 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 company specializing in analog and embedded processing technologies, with leadership in precision op-amps, data converters, and power management ICs.
The LM6142AIMX belongs to TI's precision rail-to-rail op-amp product line, designed specifically for low-voltage, low-power, high-fidelity signal conditioning in portable and single-supply measurement systems.
FAQ
What is the maximum supply voltage rating for LM6142AIMX?
The absolute maximum supply voltage for LM6142AIMX is 33V, as specified in the Absolute Maximum Ratings table. Operation beyond this limit risks permanent device damage. Recommended operating conditions specify a maximum of 32V for reliable long-term performance across −40°C to +85°C ambient temperature.
Does LM6142AIMX support rail-to-rail input at 2.7V supply?
Yes, LM6142AIMX supports rail-to-rail input at 2.7V supply, with a common-mode input voltage range of 0V to 2.7V (typical) and guaranteed operation from 0V to 2.7V over temperature. This enables direct interfacing with grounded sensors and single-supply microcontrollers without external biasing networks.
What is the typical output voltage swing for LM6142AIMX into a 10kΩ load at 5V supply?
At 5V supply and 25°C, LM6142AIMX delivers a typical output swing within 40mV of the positive rail and 50mV of the negative rail into a 10kΩ load. Over temperature (−40°C to +85°C), the worst-case swing is within 140mV of the positive rail and 133mV of the negative rail - preserving usable dynamic range in demanding environments.
Is LM6142AIMX stable when driving capacitive loads?
Yes, LM6142AIMX is designed to drive capacitive loads up to 100pF without external compensation, thanks to its slew-boosted architecture and internal frequency compensation. The datasheet confirms stable operation into ≥100pF loads, eliminating oscillation risk in ADC driver and filter applications.
What packaging and ordering information applies to LM6142AIMX?
LM6142AIMX is supplied in an 8-pin SOIC (D package) with body dimensions 4.90mm × 3.91mm. The "MX" suffix denotes tape-and-reel packaging (2500 units per reel), RoHS-compliant, and lead-free. It is distinct from the PDIP variant (LM6142AIM) and shares pin compatibility with other LM614x family members in SOIC-8 format.
LM6142AIMX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 Channels)
- Current - Output / Channel:
- 24 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:
- 8-SOIC
LM6142AIMX FAQ
1.How can I place an order for LM6142AIMX through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6142AIMX 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 LM6142AIMX reliable?
The price and inventory of LM6142AIMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6142AIMX is usually 5 days.
3.What payment methods are accepted for LM6142AIMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6142AIMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6142AIMX?
LM6142AIMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6142AIMX 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 LM6142AIMX?
For technical support, including LM6142AIMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6142AIMX requirements.
6.How does Aetrix verify that LM6142AIMX is sourced from the original manufacturer or authorized distributors?
All LM6142AIMX 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 LM6142AIMX meets industry standards.
7.What is the process for return or replacement of LM6142AIMX?
All LM6142AIMX units undergo pre-shipment inspection (PSI). If there is an issue with LM6142AIMX, 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 LM6142AIMX part is unused and in its original packaging.
Return procedure for LM6142AIMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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