My Inquiry
My Account
Texas Instruments LM6142BIM
- Part No.:
- LM6142BIM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM6142BIM.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:140
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM6142BIM 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 at 50kHz, 30V/μs slew rate, 650μA per amplifier quiescent current, 2.7V to 24V supply range, and 107dB CMRR - enabling high-fidelity signal conditioning in depth sounders and barcode scanners.
For engineers reviewing the LM6142BIM datasheet, LM6142BIM pinout, LM6142BIM application, or LM6142BIM equivalent, key selection criteria include rail-to-rail I/O swing at low supply voltages, capacitive load drive stability, input offset voltage drift (3µV/°C), and compatibility with single-supply 3V–5V systems requiring >80dB PSRR and >100dB open-loop gain.
Technical Context
The LM6142BIM employs a patented dual-input-stage architecture combining NPN and PNP differential pairs to achieve true rail-to-rail input common-mode range (−0.25V to 5.25V at 5V supply) without phase reversal or CMVR limitation. Its slew-boosted output stage enables 30V/μs transient response while maintaining stability into ≥100pF loads.
This architecture supports precision DC-coupled amplification across its full 2.7V–24V operating range, with guaranteed performance at −40°C to +85°C ambient. Input bias current remains ≤300nA over temperature, and open-loop gain exceeds 100V/mV (108dB) into 10kΩ loads - critical for high-accuracy sensor buffering and ADC driver applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 17MHz at 50kHz - enables stable unity-gain operation up to ~10MHz and preserves phase margin in active filters and transimpedance amps. |
| Slew rate | 30V/μs - supports fast settling of 10-bit+ signals in ADC front-ends without distortion at full-scale transitions. |
| Supply current per amp | 650μA - extends battery life in portable instrumentation; draws <1.3mA total for dual-channel operation at 5V. |
| Input CMVR | −0.25V to 5.25V at VS = 5V - accepts inputs beyond rails, eliminating level-shifting in single-supply sensor interfaces. |
| Output swing (RL = 100kΩ) | Within 30mV of rails - delivers >99% dynamic range at 3V/5V supplies, maximizing SNR in low-voltage data acquisition. |
| CMRR | 107dB - rejects common-mode noise from shared power rails or EMI-coupled sources in noisy industrial environments. |
| PSRR | 87dB - maintains DC accuracy despite ±100mV supply ripple, critical for precision analog front-ends. |
Pinout & Package
LM6142BIM is housed in an 8-pin SOIC (D package) with 4.90mm × 3.91mm body size, rated for −40°C to +85°C operation and compatible with standard surface-mount reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Delivers rail-to-rail voltage swing; capable of sourcing/sinking ≥10mA into 2kΩ loads. |
| 2 (−IN A) | Inverting input A | Differential node for feedback networks; supports common-mode voltages down to −0.25V at 5V supply. |
| 3 (+IN A) | Non-inverting input A | High-impedance sensor interface node; input bias current ≤300nA ensures minimal loading on high-Z sources. |
| 4 (V−) | Negative supply rail | Ground reference for single-supply operation or negative rail in split-supply configurations. |
| 5 (+IN B) | Non-inverting input B | Independent channel input; electrically isolated from Channel A with >130dB amp-to-amp isolation. |
| 6 (−IN B) | Inverting input B | Configurable for differential or single-ended feedback; identical CMVR and bias specs as Pin 2. |
| 7 (OUT B) | Amplifier B output | Functionally identical to Pin 1; enables dual-channel signal processing without cross-talk degradation. |
| 8 (V+) | Positive supply rail | Accepts 2.7V–24V; internal regulation ensures stable biasing across full voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input with extended CMVR | −0.25V to 5.25V at 5V supply eliminates external level shifters in single-supply sensor interfaces. |
| Slew-boosted output architecture | 30V/μs response sustains fidelity in pulse-amplification and fast-settling data acquisition paths. |
| Stable into large capacitive loads | Drives ≥100pF directly without external compensation - simplifies ADC buffer layout and reduces BOM count. |
| Low input offset drift | 3µV/°C ensures <100µV total drift over −40°C to +85°C - critical for uncalibrated portable measurement systems. |
| High open-loop gain | 108dB (100V/mV) into 10kΩ maintains closed-loop accuracy even with high feedback resistor values. |
Applications
| Depth Sounder Signal Conditioning | Barcode Scanner Analog Front-End |
|---|---|
Use Scenario: Amplifying weak, high-frequency echo return signals from underwater transducers in battery-powered fish finders. IC Role / Device Role / Timing Role: Dual-channel op amp configured as transimpedance amplifier (Channel A) and post-amplifier (Channel B) with DC-coupled gain staging. Use Value: Rail-to-rail I/O preserves full dynamic range at 3.3V supply; 17MHz GBW resolves ultrasonic bursts up to 1MHz without phase lag. | Use Scenario: Buffering and conditioning analog photodiode outputs in handheld laser barcode scanners. IC Role / Device Role / Timing Role: Single-supply rail-to-rail amplifier driving 12-bit SAR ADC inputs with minimal settling time. Use Value: 30V/μs slew rate achieves <500ns settling to 0.1% for rapid scan line digitization; 650μA supply current extends AA-battery life to >10 hours. |
| Portable Instrumentation Amplifier Core | Battery-Operated Sensor Interface |
Use Scenario: Building 3-op-amp instrumentation amplifiers for medical or environmental sensors using single 5V supply. IC Role / Device Role / Timing Role: Two LM6142BIM units provide matched input buffers (A/B channels) and difference amplifier in discrete IA topology. Use Value: >130dB amp-to-amp isolation prevents channel crosstalk; rail-to-rail I/O enables full-scale sensor output utilization without clipping. | Use Scenario: Interfacing thermocouples, strain gauges, or pH electrodes in field-deployable environmental monitors. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with programmable gain, filtering, and ADC driver functionality. Use Value: 107dB CMRR rejects power-line interference; 3µV/°C drift minimizes calibration frequency; 2.7V min supply supports Li-ion battery discharge down to 2.8V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Lower GBW (6.4MHz), higher IQ (550μA/amp), same SOIC-8 package; 100dB CMRR. | Better suited for lower-speed, ultra-low-power sensor nodes where 17MHz bandwidth is unnecessary. | Select TLV2462IDR when supply current is primary constraint and bandwidth ≤5MHz suffices. |
| OPA2333AIDR | Zero-drift architecture (0.02µV/°C), lower VOS (12µV max), but lower GBW (350kHz) and higher cost. | Ideal for high-precision DC measurements (e.g., weigh scales, medical diagnostics) where drift dominates error budget. | Choose OPA2333AIDR only when sub-µV/°C drift is mandatory and bandwidth requirements are <500kHz. |
Compared with TLV2462IDR and OPA2333AIDR, the LM6142BIM uniquely balances 17MHz bandwidth, 30V/μs slew rate, and 650μA quiescent current in a cost-effective SOIC-8 package - making it optimal for mid-speed, battery-constrained signal chains requiring both AC fidelity and DC accuracy.
Availability
LM6142BIM is available at Aetrix Electronics and suitable for depth sounders, barcode scanners, and portable instrumentation requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LM6142BIM 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 expertise in precision amplifiers and power-efficient signal conditioning ICs.
The LM614x family was designed specifically for battery-operated instrumentation demanding rail-to-rail I/O, wide supply range, and low quiescent current - targeting applications like portable test equipment, marine electronics, and handheld industrial sensors.
FAQ
What is the maximum supply voltage rating for LM6142BIM?
The absolute maximum supply voltage for LM6142BIM 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 performance guaranteed across that span. At 24V supply, LM6142BIM maintains 18MHz gain-bandwidth and 114dB CMRR, confirming robust high-voltage capability.
Does LM6142BIM support true rail-to-rail input at 2.7V supply?
Yes, LM6142BIM supports rail-to-rail input at 2.7V supply, with a common-mode input voltage range of 0V to 2.7V under those conditions. This allows direct interfacing with sensors or DACs operating at the same low supply without external level shifting. The −0.25V to 5.25V specification applies at 5V supply; the input stage dynamically adapts to the applied rails.
What is the typical output voltage swing for LM6142BIM into a 10kΩ load at 5V supply?
At 5V supply and 25°C, LM6142BIM 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 - ensuring >95% usable dynamic range in most single-supply designs.
Can LM6142BIM drive capacitive loads without external compensation?
Yes, LM6142BIM is designed to drive capacitive loads up to 100pF stably without external compensation, as confirmed by TI's characterization data and application notes. This capability simplifies ADC buffer design and eliminates series resistance or isolation components typically needed with older op amps - reducing board space and improving signal integrity.
How does the LM6142BIM differ from the LM6142AIM variant?
The LM6142BIM and LM6142AIM share identical pinout, package, and electrical architecture, but differ in input offset voltage grade: LM6142BIM has a maximum VOS of 2.5mV (typ 2mV) at 25°C, while LM6142AIM is tighter at 1mV (typ 0.3mV). Both exhibit identical 3µV/°C drift, GBW, slew rate, and supply current - making LM6142BIM optimal for cost-sensitive applications where <2.5mV offset is acceptable.
LM6142BIM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
LM6142BIM FAQ
1.How can I place an order for LM6142BIM through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6142BIM 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 LM6142BIM reliable?
The price and inventory of LM6142BIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6142BIM is usually 5 days.
3.What payment methods are accepted for LM6142BIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6142BIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6142BIM?
LM6142BIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6142BIM 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 LM6142BIM?
For technical support, including LM6142BIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6142BIM requirements.
6.How does Aetrix verify that LM6142BIM is sourced from the original manufacturer or authorized distributors?
All LM6142BIM 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 LM6142BIM meets industry standards.
7.What is the process for return or replacement of LM6142BIM?
All LM6142BIM units undergo pre-shipment inspection (PSI). If there is an issue with LM6142BIM, 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 LM6142BIM part is unused and in its original packaging.
Return procedure for LM6142BIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM6142BIM Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
