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Texas Instruments LMH6618MKX/NOPB
- Part No.:
- LMH6618MKX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMH6618MKX/NOPB.pdf
- Description:
- IC OPAMP VFB 1 CIRC SOT23-THIN
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
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Product details
Overview
LMH6618MKX/NOPB from Texas Instruments is a single-channel, rail-to-rail input/output operational amplifier optimized for high-speed ADC driving and video signal conditioning. It delivers 130 MHz small-signal bandwidth, 55 V/µs slew rate, 1.25 mA supply current at 5V, ±0.75 mV max input offset voltage, and operates from 2.7V to 11V supply rails - enabling precision, low-power signal acquisition in portable video and industrial sensor front-ends.
For engineers reviewing the LMH6618MKX/NOPB datasheet, LMH6618MKX/NOPB pinout, LMH6618MKX/NOPB application, or LMH6618MKX/NOPB equivalent, key selection criteria include its 90 ns 0.1% settling time, 100 dBc SFDR at 100 kHz, 35 mA output drive capability, and active-low shutdown pin supporting ultra-low 72 µA disable current - critical for battery-powered instrumentation and high-resolution data acquisition systems.
Technical Context
The LMH6618MKX/NOPB employs a voltage-feedback architecture with balanced differential inputs and high open-loop gain (>98 dB), enabling stable unity-gain and high-gain active filter designs. Its rail-to-rail input stage extends 200 mV beyond supply rails, while the output swings to within 37 mV of ground on a 5V single supply with 150Ω load - ensuring full dynamic range in low-voltage systems.
It integrates an active-low ENABLE pin (threshold: 2.0 V high, 1.0 V low) with 25 ns turn-on and 90 ns turn-off times, allowing precise power sequencing. The amplifier drives up to 30 pF capacitive loads without external compensation and sustains linear ±35 mA output current into mid-rail 1 kΩ loads - supporting direct interface to ADC inputs and video line drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 130 MHz at AV = +1, RL = 1 kΩ - supports wideband signal conditioning for 10+ MSPS ADCs and HD video. |
| Slew Rate | 55 V/µs - enables faithful reproduction of fast transient signals without slewing distortion. |
| Supply Current | 1.25 mA typical at 5V - balances speed and power efficiency for portable and thermally constrained designs. |
| Input Offset Voltage | ±0.75 mV max at 25°C - ensures DC accuracy in precision sensor amplification and DAC buffering. |
| 0.1% Settling Time | 90 ns for 2V step - meets timing budgets for high-throughput sampling systems requiring rapid acquisition. |
| Spurious-Free Dynamic Range | 100 dBc at f = 100 kHz, VOUT = 2 VPP - minimizes harmonic contamination in spectral-sensitive applications. |
| Rail-to-Rail I/O | Input CMVR extends −0.2 V to +5.2 V (5V supply); output swings to within 75 mV of either rail - maximizes signal swing on single supplies. |
Pinout & Package
LMH6618MKX/NOPB is housed in a 6-pin SOT-23 package (DDC0006A), optimized for space-constrained PCB layouts. Thermal resistance θJA is 231°C/W, supporting operation across −40°C to +125°C ambient.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output terminal - capable of sourcing/sinking ±35 mA, drives 150Ω video loads or ADC input capacitance directly. |
| 2 | IN− | Inverting input - high-impedance (8 MΩ), low-input-bias-current node for feedback network connection. |
| 3 | IN+ | Non-inverting input - rail-to-rail common-mode range (−0.2 V to +5.2 V on 5V supply) enables direct sensor interfacing. |
| 4 | V− | Negative supply rail - accepts ground (single supply) or negative voltage (dual supply) down to −5V. |
| 5 | V+ | Positive supply rail - operates from 2.7V to 11V; PSRR >84 dB ensures immunity to supply noise. |
| 6 | DISABLE | Active-low enable control - pulls supply current to 72 µA when low; threshold defined at 1.0 V (max) for reliable shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal utilization on 2.7V–11V supplies, eliminating level-shifting circuitry in portable systems. |
| 130 MHz bandwidth with 55 V/µs slew rate | Supports high-fidelity amplification of multi-MHz sensor outputs and composite video signals without phase lag. |
| 90 ns 0.1% settling time | Meets timing requirements for 10+ MSPS successive-approximation ADCs, reducing aperture uncertainty. |
| 72 µA shutdown current | Extends battery life in intermittent-sampling instruments by minimizing quiescent drain during idle cycles. |
| 10 nV/√Hz input voltage noise | Maintains SNR integrity in low-level transducer amplification stages, especially below 100 kHz. |
Applications
| ADC Driver | DAC Buffer |
|---|---|
Use Scenario: Driving the analog input of a 12-bit, 10 MSPS SAR ADC in a portable data logger. IC Role / Device Role / Timing Role: High-speed buffer isolating DAC or sensor source from ADC input capacitance while maintaining linearity and settling fidelity. Use Value: 90 ns 0.1% settling ensures accurate sampling before next conversion cycle; 100 dBc SFDR preserves ENOB in spectral analysis. |
Use Scenario: Isolating a precision DAC output from varying load impedance in industrial control loop outputs. IC Role / Device Role / Timing Role: Low-offset, rail-to-rail output stage delivering full-scale DAC voltage to actuator drivers or reference circuits. Use Value: ±0.75 mV max VOS minimizes static error; RRO output guarantees 0–5 V swing on 5V supply without headroom loss. |
| High-Speed Sensor Amplifier | STB/TV Video Amplifier |
Use Scenario: Amplifying fast transient outputs from piezoelectric vibration sensors in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: Wideband, low-noise gain stage preserving rise time and amplitude fidelity of sub-µs mechanical events. Use Value: 55 V/µs slew rate prevents pulse distortion; 10 nV/√Hz noise floor maintains resolution on low-amplitude signals. |
Use Scenario: Driving 75Ω coaxial video lines in set-top box RGB or YPbPr output stages. IC Role / Device Role / Timing Role: Composite video driver with 0.1%/0.1° differential gain/phase performance at 4.43 MHz. Use Value: DG/DP <0.1% ensures color fidelity; 130 MHz bandwidth supports HD baseband video without roll-off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6609MMX/NOPB | Lower bandwidth (100 MHz), no shutdown pin, SO-8 package - lacks enable control and SOT-23 footprint. | Not suitable where power gating or board area constraints apply; better for fixed-power, higher-voltage dual-supply use. | Select only if shutdown functionality and compact packaging are unnecessary and 100 MHz BW suffices. |
| OPA355DBVR | Higher GBW (200 MHz), lower supply current (4.9 mA), no rail-to-rail input - limited CMVR (to V− + 1.5 V). | Preferred for ultra-high-speed, low-noise preamps but incompatible with ground-referenced sensor inputs. | Choose when speed outweighs input range and power; avoid when sensing near ground or rail. |
Compared with LMH6618MKX/NOPB, LMH6609MMX/NOPB trades shutdown capability and package size for cost and simplicity, while OPA355DBVR offers greater bandwidth at higher quiescent current and reduced input voltage range - making LMH6618MKX/NOPB optimal for space-limited, battery-aware, rail-to-rail acquisition systems.
Availability
LMH6618MKX/NOPB is available at Aetrix Electronics and suitable for portable video, industrial sensor signal chains, and high-speed data acquisition requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LMH6618MKX/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 specializing in analog and embedded processing technologies, with decades of expertise in high-performance op-amps and precision signal chain solutions.
The LMH6618MKX/NOPB belongs to TI's PowerWise® high-speed op-amp family, engineered for exceptional speed-to-power efficiency in demanding applications like ADC/DAC interfacing, video signal routing, and real-time sensor conditioning.
FAQ
What is the operating temperature range of the LMH6618MKX/NOPB?
The LMH6618MKX/NOPB is rated for industrial operation from −40°C to +125°C ambient temperature. This extended range is validated per TI's production testing and thermal characterization, enabling deployment in harsh environments such as automotive engine compartments, industrial PLCs, and outdoor instrumentation - without derating or thermal margin compromise.
Does the LMH6618MKX/NOPB support single-supply operation?
Yes, the LMH6618MKX/NOPB fully supports true single-supply operation. With rail-to-rail input extending 200 mV beyond the supply rails and output swing to within 37 mV of ground on a 5V supply driving a 150Ω load, it delivers maximum dynamic range without external level-shifting components - ideal for battery-powered portable video and sensor systems.
What is the function of the DISABLE pin on the LMH6618MKX/NOPB?
The DISABLE pin on the LMH6618MKX/NOPB is an active-low control that reduces supply current to 72 µA (typical) when pulled low. Its 25 ns turn-on and 90 ns turn-off times allow precise power gating in duty-cycled systems. Thresholds are specified at 2.0 V (min high) and 1.0 V (max low), ensuring robust noise immunity in mixed-signal PCB layouts.
Can the LMH6618MKX/NOPB drive a 150Ω video load directly?
Yes, the LMH6618MKX/NOPB is explicitly characterized to drive 150Ω loads with minimal distortion: differential gain and phase are <0.1% and <0.1° at 4.43 MHz, and output swing reaches within 230 mV of either rail under this condition. Its 35 mA linear output current and 130 MHz bandwidth make it suitable for SD/HD composite and component video line driving without external buffers.
How does the LMH6618MKX/NOPB compare to the dual-channel LMH6619 in performance?
The LMH6618MKX/NOPB shares identical AC/DC specifications with the LMH6619 per channel - including 130 MHz bandwidth, 55 V/µs slew rate, and 90 ns settling - but adds an active-low DISABLE pin and uses a 6-pin SOT-23 package. The LMH6619 omits shutdown and occupies an 8-pin SOIC, making LMH6618MKX/NOPB preferable where board area, power control, or single-channel density are prioritized.
LMH6618MKX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 57V/µs
- Gain Bandwidth Product:
- 65 MHz
- -3db Bandwidth:
- 140 MHz
- Current - Input Bias:
- 1.5 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 1.35mA
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
LMH6618MKX/NOPB FAQ
1.How can I place an order for LMH6618MKX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6618MKX/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 LMH6618MKX/NOPB reliable?
The price and inventory of LMH6618MKX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6618MKX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6618MKX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6618MKX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6618MKX/NOPB?
LMH6618MKX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6618MKX/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 LMH6618MKX/NOPB?
For technical support, including LMH6618MKX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6618MKX/NOPB requirements.
6.How does Aetrix verify that LMH6618MKX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6618MKX/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 LMH6618MKX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6618MKX/NOPB?
All LMH6618MKX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6618MKX/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 LMH6618MKX/NOPB part is unused and in its original packaging.
Return procedure for LMH6618MKX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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