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Texas Instruments LMH6642QMF/NOPB
- Part No.:
- LMH6642QMF/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMH6642QMF/NOPB.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,394
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Product details
Overview
LMH6642QMF/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 high-fidelity video buffering and precision ADC driving in automotive and portable systems.
For engineers reviewing the LMH6642QMF/NOPB datasheet, LMH6642QMF/NOPB pinout, LMH6642QMF/NOPB application, or LMH6642QMF/NOPB equivalent, key selection considerations include its AEC-Q100 Grade 3 qualification, 2.7–10 V supply range, 17 nV/√Hz input voltage noise at 100 kHz, and guaranteed performance across −40°C to +85°C ambient temperature.
Technical Context
This op-amp uses a voltage-feedback architecture with fully differential input stage and Class AB 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 swings within 40 mV of either rail under 2 kΩ load - critical for single-supply signal conditioning.
The device achieves 0.1 dB gain flatness up to 12 MHz into 150 Ω (AV = +2), exhibits no phase reversal when CMVR is exceeded, and features infinite short-circuit protection for VS < 6 V - making it suitable for robust front-end amplification in safety-critical automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 130 MHz at ±5 V, AV = +1 - supports wideband video and high-speed data acquisition |
| Slew Rate | 135 V/µs (±5 V, AV = −1) - preserves large-signal fidelity up to ~40 MHz full-power bandwidth |
| Output Current | ±75 mA linear drive - drives 150 Ω video loads or heavy capacitive ADC inputs directly |
| Input Voltage Noise | 17 nV/√Hz at 100 kHz - enables low-noise sensor interface and precision signal chain stages |
| Supply Range | 2.7 V to 10 V single or split - operates from 3 V logic supplies or ±5 V analog rails |
| Operating Temp | −40°C to +85°C - qualified per AEC-Q100 Grade 3 for automotive cabin and engine bay use |
| Output Swing | Within 40 mV of rails (RL = 2 kΩ) - maximizes dynamic range in low-voltage systems |
Pinout & Package
LMH6642QMF/NOPB is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts in automotive modules and portable electronics.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTPUT | Amplified output node; rail-to-rail capable, ±75 mA sourcing/sinking |
| 2 | −IN | Inverting input; supports unity-gain stable configurations with feedback to this pin |
| 3 | +IN | Non-inverting input; common-mode range extends 0.5 V below V− and 1 V from V+ |
| 4 | V− | Negative supply terminal; accepts ground or negative rail (e.g., −5 V) |
| 5 | V+ | Positive supply terminal; supports up to +10 V or +5 V in split-rail operation |
Key Features
| Feature | Design Value |
|---|---|
| No output phase reversal | Remains stable even when input exceeds CMVR - eliminates latch-up risk in overdrive conditions |
| Output short-circuit protection | Infinite duration at VS < 6 V - enables safe operation during transient faults in automotive power domains |
| Differential Gain/Phase | 0.01% DG / 0.01° DP (NTSC, RL = 1 kΩ) - meets broadcast-grade video fidelity requirements |
| Settling time | 68 ns to ±0.1% - ensures accurate sampling in high-speed SAR and pipeline ADC buffer stages |
| THD at 5 MHz | −62 dBc (VO = 2 VPP, AV = +2, ±5 V) - supports clean signal reconstruction in communication interfaces |
Applications
| Automotive Camera Front-End | Portable Medical Sensor Interface |
|---|---|
Use Scenario: Amplifying analog video output from CMOS image sensors in ADAS rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Single-supply video buffer with rail-to-rail output swing and 0.01° DP to preserve color accuracy. Use Value: Enables direct connection to analog video decoders without level-shifting, reducing BOM count and board area. | Use Scenario: Conditioning low-amplitude biopotential signals (ECG, EEG) before digitization in handheld diagnostics. IC Role / Device Role / Timing Role: Low-noise, low-distortion gain stage with 17 nV/√Hz input noise and −62 dBc THD at 5 MHz. Use Value: Maintains signal integrity across battery-powered operation while meeting IEC 60601-2-51 SNR requirements. |
| Industrial ADC Driver | Current Sense Amplifier |
Use Scenario: Driving the input of 16-bit+ SAR ADCs in PLC analog input modules with fast settling and low distortion. IC Role / Device Role / Timing Role: High-speed buffer with 68 ns ±0.1% settling time and 130 MHz bandwidth. Use Value: Eliminates aperture uncertainty and supports >1 MSPS sampling without external filtering. | Use Scenario: Amplifying mV-level shunt voltage drops in motor control inverters with high common-mode rejection. IC Role / Device Role / Timing Role: Precision current sense buffer with 95 dB CMRR and rail-to-rail input (−0.5 V to 4.0 V @ 5 V). Use Value: Accurately resolves bidirectional current flow in 24 V industrial drives without external level shifters. |
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 |
|---|---|---|---|
| LMH6642MA/NOPB | Same silicon, non-automotive grade; not AEC-Q100 qualified; identical electrical specs | Not suitable for automotive safety-critical systems; rated for 0°C to +70°C commercial temp range | Select LMH6642MA/NOPB only for cost-sensitive industrial or consumer designs where automotive qualification is unnecessary |
| OPA355UA/2K5 | Lower bandwidth (200 MHz), higher supply current (5.3 mA), no AEC-Q100 rating; 11 nV/√Hz noise | Lacks guaranteed −40°C to +85°C operation and short-circuit durability for automotive environments | Choose OPA355UA/2K5 only when ultra-low noise dominates over temperature range and fault tolerance |
Compared with LMH6642MA/NOPB, the LMH6642QMF/NOPB adds AEC-Q100 Grade 3 qualification and extended temperature validation, while versus OPA355UA/2K5 it trades minor noise advantage for guaranteed automotive reliability, lower quiescent current (2.7 mA), and robust short-circuit behavior.
Availability
LMH6642QMF/NOPB is available at Aetrix Electronics and suitable for automotive camera modules, portable medical devices, industrial ADC front-ends, and current sensing applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMH6642QMF/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 op-amps and automotive-qualified components.
The LMH6642QMF/NOPB belongs to TI's LMH664X family of low-power, high-speed rail-to-rail output amplifiers - designed specifically for automotive vision systems, portable instrumentation, and precision signal conditioning where speed, power efficiency, and reliability must coexist.
FAQ
What is the maximum supply voltage for LMH6642QMF/NOPB?
The LMH6642QMF/NOPB supports a total supply voltage range of 2.7 V to 10 V, meaning the difference between V+ and V− can be up to 10 V. Absolute maximum ratings specify (V+ − V−) ≤ 13.5 V, but ensured operation is limited to 10 V per recommended conditions. Exceeding 10 V risks parametric degradation or reliability loss.
Does LMH6642QMF/NOPB support true single-supply operation?
Yes, LMH6642QMF/NOPB supports true single-supply operation: its input common-mode voltage range extends 0.5 V below V− (i.e., to −0.5 V when V− = 0 V) and 1 V from V+, while output swings within 40 mV of both rails. This allows clean amplification of ground-referenced signals with 3 V or 5 V supplies without level-shifting circuitry.
Is LMH6642QMF/NOPB pin-compatible with LMH6642MA/NOPB?
Yes, LMH6642QMF/NOPB and LMH6642MA/NOPB share identical 5-pin SOT-23 (DBV) packaging, pinout, and electrical functionality. The sole distinction is qualification: LMH6642QMF/NOPB is AEC-Q100 Grade 3 qualified and tested across −40°C to +85°C, whereas LMH6642MA/NOPB is commercial-grade (0°C to +70°C) with identical pin mapping and footprint.
What is the typical input bias current of LMH6642QMF/NOPB?
The typical input bias current of LMH6642QMF/NOPB is −1.6 µA at ±5 V supply (25°C), with a maximum of −3.25 µA across temperature. This FET-input-derived value enables high-impedance sensor interfacing and minimizes DC error in precision gain networks without requiring bias current cancellation resistors.
Can LMH6642QMF/NOPB drive a 150 Ω video load while maintaining NTSC fidelity?
Yes, LMH6642QMF/NOPB maintains 0.17% differential gain and 0.05° differential phase into 150 Ω at AV = +2 under NTSC conditions - meeting broadcast video standards. Its ±75 mA output current and rail-to-rail swing ensure full 1 VPP signal delivery without clipping, even under heavy capacitive loading typical of coaxial video traces.
LMH6642QMF/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):
- 10 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMH6642QMF/NOPB FAQ
1.How can I place an order for LMH6642QMF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6642QMF/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 LMH6642QMF/NOPB reliable?
The price and inventory of LMH6642QMF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6642QMF/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6642QMF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6642QMF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6642QMF/NOPB?
LMH6642QMF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6642QMF/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 LMH6642QMF/NOPB?
For technical support, including LMH6642QMF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6642QMF/NOPB requirements.
6.How does Aetrix verify that LMH6642QMF/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6642QMF/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 LMH6642QMF/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6642QMF/NOPB?
All LMH6642QMF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6642QMF/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 LMH6642QMF/NOPB part is unused and in its original packaging.
Return procedure for LMH6642QMF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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