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Texas Instruments LMH6642QMFX/NOPB
- Part No.:
- LMH6642QMFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMH6642QMFX/NOPB.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,350
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Product details
Overview
LMH6642QMFX/NOPB from Texas Instruments is a single-channel, rail-to-rail output voltage feedback operational amplifier optimized for low-power, high-speed applications. It delivers 130 MHz −3 dB bandwidth (±5 V), 135 V/µs slew rate, ±75 mA linear output current, and 40 mV from rails output swing - enabling precision buffering in ADC front-ends, video signal chains, and automotive sensor interfaces.
For engineers reviewing the LMH6642QMFX/NOPB datasheet, LMH6642QMFX/NOPB pinout, LMH6642QMFX/NOPB application, or LMH6642QMFX/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 3 qualification, 2.7–10 V supply range, −62 dBc THD at 5 MHz, and guaranteed performance across −40°C to +85°C ambient temperature.
Technical Context
The LMH6642QMFX/NOPB employs a voltage-feedback architecture with fully differential input stage and Class AB rail-to-rail output stage, supporting stable operation at gains ≥ +1 without external compensation. Its input common-mode range extends 0.5 V below V− and 1 V from V+, while output swing reaches within 40 mV of either rail under 2 kΩ load.
It features internal short-circuit protection (infinite duration at VS < 6 V), no phase reversal when CMVR is exceeded, and robust thermal design with RθJA = 265°C/W in SOT-23-5 package. Performance is fully characterized at 3 V, 5 V, and ±5 V supplies, with 0.1 dB gain flatness up to 12 MHz into 150 Ω.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 130 MHz at ±5 V, AV = +1 - supports high-fidelity video and wideband signal conditioning without external equalization. |
| Slew Rate | 135 V/µs (±5 V, AV = −1) - maintains full-scale 2 VPP output at >40 MHz without slewing distortion. |
| Output Current | ±75 mA linear drive - directly drives 150 Ω video loads or multiple 10-bit+ ADC inputs without external buffers. |
| Input Voltage Noise | 17 nV/√Hz at 100 kHz - preserves SNR in precision sensor amplification and low-level analog front-ends. |
| THD | −62 dBc at 5 MHz, 2 VPP, AV = +2 - meets broadcast-grade video and high-resolution data acquisition requirements. |
| Supply Range | 2.7 V to 10 V single supply or ±1.5 V to ±5 V dual supply - enables direct interface with Li-ion, 3.3 V, and 5 V systems. |
| Operating Temp | −40°C to +85°C - qualified per AEC-Q100 Grade 3 for under-hood automotive and industrial control environments. |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, surface-mount, thermally enhanced layout with exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUTPUT | Amplifier output | Rail-to-rail capable; sinks up to −145 mA / sources +115 mA; short-circuit protected. |
| 2 - IN− | Inverting input | Differential input node; supports CMVR down to 0.5 V below V− and up to 1 V from V+. |
| 3 - IN+ | Non-inverting input | High-impedance input (3 MΩ common-mode resistance); low input bias current (−1.6 µA typ). |
| 4 - V− | Negative supply | Accepts ground (single-supply) or negative rail (dual-supply); must be decoupled locally. |
| 5 - V+ | Positive supply | Supports 2.7–10 V range; PSRR >78 dB up to 1 MHz ensures noise immunity in noisy power domains. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 40 mV of V+ or V− at 2 kΩ load - maximizes dynamic range in low-voltage systems (e.g., 3.3 V ADC reference buffers). |
| AEC-Q100 Grade 3 qualification | Rated for −40°C to +85°C operation with automotive flow manufacturing - suitable for engine control, ADAS camera modules, and infotainment. |
| No output phase reversal | Remains stable even when input exceeds CMVR - eliminates latch-up risk in overvoltage transients (e.g., sensor fault conditions). |
| Low power consumption | 2.7 mA per channel at no load - reduces thermal load and extends battery life in portable video and IoT edge nodes. |
| Video-optimized linearity | DG/DP ≤ 0.01% / 0.01° at NTSC, 150 Ω load - preserves color fidelity in automotive backup cameras and display drivers. |
Applications
| ADC Buffer Amplifier | Automotive Camera Interface |
|---|---|
|
Use Scenario: Driving SAR or pipeline ADC inputs with fast settling and minimal distortion. IC Role / Device Role / Timing Role: High-speed, low-noise buffer between signal source and ADC sampling node. Use Value: 68 ns ±0.1% settling time and −62 dBc THD ensure accurate digitization of 10+ bit signals up to 10 MSPS. |
Use Scenario: Conditioning analog RGB or CVBS video signals from rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Video driver with DC-coupled rail-to-rail output for direct connection to video decoder ICs. Use Value: DG/DP ≤ 0.01% and 130 MHz bandwidth preserve color accuracy and edge sharpness in 720p/1080p video streams. |
| Current Sense Amplifier | Portable Medical Sensor Front-End |
|
Use Scenario: Amplifying mV-level shunt voltage in motor control or battery management systems. IC Role / Device Role / Timing Role: Precision gain stage with low offset drift and high CMRR for bidirectional current sensing. Use Value: ±5 µV/°C VOS drift and 95 dB CMRR minimize temperature-induced errors in 1% accuracy current measurement. |
Use Scenario: Signal conditioning for ECG, pulse oximeter, or glucose sensor analog outputs. IC Role / Device Role / Timing Role: Low-noise, low-power gain block preceding anti-aliasing filter and ADC. Use Value: 17 nV/√Hz input voltage noise and 2.7 mA quiescent current enable high-SNR acquisition with extended battery runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, rail-to-rail output op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6642QMF/NOPB | Identical electrical specs and AEC-Q100 Grade 3 qualification; same SOT-23-5 package but non-automotive grade marking. | Approved for industrial/commercial use only; not certified for automotive safety-critical functions. | Select LMH6642QMFX/NOPB for production automotive systems requiring traceable Grade 3 qualification. |
| OPA355IDBVR | Lower bandwidth (200 MHz), higher supply current (5.3 mA), no AEC-Q100 rating; SOIC-5 and SOT-23-5 options. | Lacks automotive qualification and guaranteed −40°C to +85°C performance; better suited for lab instrumentation. | Choose OPA355IDBVR only if higher bandwidth outweighs automotive compliance and power budget constraints. |
Compared with LMH6642QMF/NOPB, LMH6642QMFX/NOPB adds full AEC-Q100 Grade 3 documentation and process traceability, while OPA355IDBVR trades qualification for marginally higher speed and lacks guaranteed video-linearity metrics.
Availability
LMH6642QMFX/NOPB is available at Aetrix Electronics and suitable for automotive camera modules, industrial ADC front-ends, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMH6642QMFX/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 delivering analog and embedded processing solutions, with deep expertise in high-performance amplifiers, data converters, and automotive-qualified ICs.
The LMH6642QMFX/NOPB belongs to TI's LMH664X family of low-power, high-output-current op-amps designed specifically for automotive video, sensor signal conditioning, and precision data acquisition where rail-to-rail swing, speed, and reliability are critical.
FAQ
What is the maximum supply voltage for LMH6642QMFX/NOPB?
The absolute maximum supply voltage (V+ − V−) for LMH6642QMFX/NOPB is 13.5 V. However, recommended operating conditions specify 2.7 V to 10 V total supply range. Operation above 10 V risks exceeding junction temperature limits and invalidates AEC-Q100 qualification - always observe derating curves in Section 7.4 of the datasheet when designing for thermal margin.
Does LMH6642QMFX/NOPB support single-supply operation?
Yes, LMH6642QMFX/NOPB fully supports true single-supply operation from 2.7 V to 10 V. Its input common-mode range extends 0.5 V below V− (i.e., to ground) and 1 V from V+, while output swings within 40 mV of both rails - enabling direct interfacing with 3.3 V microcontrollers and unipolar sensors without level-shifting circuitry.
Is LMH6642QMFX/NOPB pin-compatible with LMH6642QMF/NOPB?
Yes, LMH6642QMFX/NOPB and LMH6642QMF/NOPB share identical SOT-23-5 (DBV) package, pinout, and electrical specifications. The "X" suffix denotes full AEC-Q100 Grade 3 qualification and automotive flow manufacturing; the "MFX" part number is functionally and physically interchangeable with "QMF" in PCB layout, though only "QMFX" carries automotive certification documentation.
What is the typical THD performance of LMH6642QMFX/NOPB at 5 MHz?
LMH6642QMFX/NOPB achieves −62 dBc total harmonic distortion at 5 MHz, 2 VPP output, AV = +2, and RL = 2 kΩ (±5 V supply). This value is measured under standard test conditions and reflects its suitability for broadcast-quality video and high-fidelity data acquisition where spectral purity is essential.
How does LMH6642QMFX/NOPB handle overdrive recovery?
LMH6642QMFX/NOPB recovers from output saturation in 100 ns, as specified in the datasheet. This fast recovery time ensures minimal dead time in closed-loop systems experiencing large transient inputs - critical for maintaining loop stability in active filters and servo control amplifiers where overdrive events may occur during startup or fault conditions.
LMH6642QMFX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 135V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 130 MHz
- Current - Input Bias:
- 1.6 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 2.7mA
- Current - Output / Channel:
- 75 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12.8 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMH6642QMFX/NOPB FAQ
1.How can I place an order for LMH6642QMFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6642QMFX/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 LMH6642QMFX/NOPB reliable?
The price and inventory of LMH6642QMFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6642QMFX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6642QMFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6642QMFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6642QMFX/NOPB?
LMH6642QMFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6642QMFX/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 LMH6642QMFX/NOPB?
For technical support, including LMH6642QMFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6642QMFX/NOPB requirements.
6.How does Aetrix verify that LMH6642QMFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6642QMFX/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 LMH6642QMFX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6642QMFX/NOPB?
All LMH6642QMFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6642QMFX/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 LMH6642QMFX/NOPB part is unused and in its original packaging.
Return procedure for LMH6642QMFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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