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Texas Instruments LMH6559MFX/NOPB
- Part No.:
- LMH6559MFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMH6559MFX/NOPB.pdf
- Description:
- IC BUFFER 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,221
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Product details
Overview
LMH6559MFX/NOPB from Texas Instruments is a high-speed, unity-gain closed-loop buffer IC designed for video signal distribution and high-frequency analog signal routing on PCBs. It delivers 1750 MHz small-signal bandwidth, 4580 V/µs slew rate, 0.06% differential gain / 0.02° differential phase at 3.58 MHz, and −52 dBc THD at 20 MHz into 100 Ω - enabling precise composite video buffering in broadcast and instrumentation systems.
For engineers reviewing the LMH6559MFX/NOPB datasheet, LMH6559MFX/NOPB pinout, LMH6559MFX/NOPB application, or LMH6559MFX/NOPB equivalent, key selection criteria include its 8-pin SOIC package, single- or dual-supply operation (3–10 V), 1.2 Ω output resistance, 200 kΩ input resistance, and guaranteed performance across −40°C to +85°C industrial temperature range.
Technical Context
The LMH6559MFX/NOPB uses TI's VIP10 high-speed bipolar process and features internally fixed loop gain of 1, eliminating external feedback components. Its architecture supports stable operation into resistive, capacitive, and transmission-line loads up to 100 Ω without compensation.
It achieves ultra-fast transient response (0.4 ns rise time, 9 ns settling to ±0.1%) and maintains low distortion across supply voltages - with verified 745 MHz SSBW and 2070 V/µs slew rate under +5 V single supply, and 315 MHz SSBW at +3 V - making it suitable for portable and low-voltage high-fidelity signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small Signal Bandwidth | 1750 MHz (±5 V supply): enables full HD/SDI video signal passband without attenuation |
| Slew Rate | 4580 V/µs (±5 V): supports clean 3.3 VPP step response with <4% overshoot and sub-10 ns settling |
| Differential Gain/Phase | 0.06% / 0.02° at 3.58 MHz: meets NTSC/PAL broadcast-grade video fidelity requirements |
| Total Harmonic Distortion | −52 dBc at 20 MHz, 2 VPP into 100 Ω: ensures minimal spectral contamination in wideband IF stages |
| Output Resistance | 1.2 Ω (100 kHz): allows direct 50 Ω/75 Ω transmission line driving without series termination |
| Supply Current | 10 mA typical (±5 V): delivers extreme speed at low quiescent power for thermal-constrained layouts |
| Input Resistance | 200 kΩ: provides high-Z interface compatibility with DAC outputs, PLL VCXOs, and sensor front-ends |
Pinout & Package
LMH6559MFX/NOPB is supplied in an 8-pin SOIC package (Package Code D, R-PDSO-G8) with exposed pad not present. Pin functions are validated per TI SNOSA57C Rev. MARCH 2013.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VEE (Negative Supply) | Ground reference for dual-supply operation; tied to GND in single-supply configurations |
| 2 | Inverting Input (NC) | No-connect terminal; internally unused and must be left floating or grounded per layout guidelines |
| 3 | Non-Inverting Input | High-impedance (200 kΩ) signal input node; accepts DC-coupled or AC-coupled video/baseband sources |
| 4 | VCC (Positive Supply) | Primary power rail; supports 3–10 V operation with PSRR >48 dB up to 100 kHz |
| 5 | Output | Low-impedance (1.2 Ω) buffered output; drives 100 Ω loads directly with 3.45 V swing (±5 V) |
| 6 | NC | No-connect; electrically isolated and must remain unconnected |
| 7 | NC | No-connect; electrically isolated and must remain unconnected |
| 8 | VCC (Positive Supply) | Second positive supply pin; paralleled with Pin 4 to reduce supply inductance and improve HF PSRR |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable closed-loop architecture | Eliminates need for external feedback resistors - reduces BOM count and layout sensitivity |
| Ultra-low output impedance | 1.2 Ω enables direct 50 Ω/75 Ω cable driving without series termination resistors |
| Broadcast-grade video linearity | 0.06%/0.02° DG/DP at 3.58 MHz satisfies SMPTE RP-168 and ITU-R BT.470 standards |
| Wide supply range support | Operates from 3 V to 10 V (single or split), allowing reuse across 3.3 V, 5 V, and ±5 V systems |
| High output current capability | ±74 mA linear output current supports heavy capacitive loads and fast edge rates into mismatched lines |
Applications
| Video Switching and Routing | Test Point Drivers |
|---|---|
Use Scenario: Distribution of composite NTSC/PAL video signals across multi-output switch matrices in broadcast routers. IC Role / Device Role / Timing Role: Closed-loop buffer isolating source from switching capacitance while preserving color fidelity and timing integrity. Use Value: 0.06% differential gain error prevents hue shift; 1750 MHz bandwidth preserves chroma burst amplitude and phase. | Use Scenario: High-fidelity probing of high-speed digital clock nets or RF local oscillator outputs in production test fixtures. IC Role / Device Role / Timing Role: Low-capacitance, low-distortion buffer presenting minimal loading to sensitive nodes during in-circuit measurement. Use Value: 1.7 pF input capacitance and 4580 V/µs slew rate prevent signal degradation and edge rounding at >500 MHz. |
| High Frequency Active Filters | Wideband DC Clamping Buffers |
Use Scenario: Output stage of 200+ MHz active bandpass filters used in spectrum analyzers and communications receivers. IC Role / Device Role / Timing Role: Unity-gain buffer maintaining filter Q-factor and group delay flatness by isolating filter from load variations. Use Value: 1750 MHz SSBW ensures no peaking or roll-off within filter passband; 1.2 Ω output minimizes interaction with filter termination. | Use Scenario: DC restoration stage in video clamping circuits where black-level accuracy and transient response are critical. IC Role / Device Role / Timing Role: High-speed buffer interfacing clamping diode network to downstream ADC or sync separator. Use Value: 9 ns settling to ±0.1% ensures accurate black-level capture even after horizontal sync pulses with <100 ns duration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar closed-loop buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6554MA/NOPB | Higher 2.8 GHz SSBW but requires external feedback; not unity-gain stable | Used where adjustable gain >1 is needed; unsuitable for direct replacement in fixed-gain video paths | Select only when gain flexibility and higher bandwidth outweigh simplicity and layout robustness |
| THS3201DGNR | 1.8 GHz SSBW, 4000 V/µs slew, but 0.12% DG at 3.58 MHz - double LMH6559MFX/NOPB's error | Acceptable for non-broadcast video or instrumentation where DG/DP specs are relaxed | Choose when cost sensitivity outweighs broadcast compliance; verify system-level color fidelity |
Compared with LMH6559MFX/NOPB, LMH6554MA/NOPB offers higher bandwidth but demands careful compensation design, while THS3201DGNR trades video linearity for lower unit cost - making LMH6559MFX/NOPB the optimal choice for broadcast-qualified, drop-in unity-gain buffering.
Availability
LMH6559MFX/NOPB is available at Aetrix Electronics and suitable for video switching and routing, test point drivers, and high-frequency active filters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LMH6559MFX/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 over 50 years of innovation in high-performance signal chain solutions.
The LMH6559MFX/NOPB belongs to TI's high-speed buffer product line, engineered specifically for broadcast video, test equipment, and wideband analog signal distribution where unity-gain stability, ultra-low distortion, and transmission-line drive capability are essential.
FAQ
What supply voltage ranges does the LMH6559MFX/NOPB support?
The LMH6559MFX/NOPB operates from 3 V to 10 V total supply range - supporting both single-supply (e.g., +5 V / GND) and split-supply (e.g., ±5 V) configurations. At +3 V, it delivers 315 MHz bandwidth and 770 V/µs slew rate; at ±5 V, it achieves 1750 MHz bandwidth and 4580 V/µs. The LMH6559MFX/NOPB maintains specified differential gain/phase and THD performance across this full range.
Is the LMH6559MFX/NOPB unity-gain stable without external components?
Yes, the LMH6559MFX/NOPB is internally configured for closed-loop unity gain (ACL = 1) and requires no external feedback resistors. Its architecture is optimized for unconditional stability into 100 Ω loads, including reactive and transmission-line terminations. This eliminates layout sensitivity and component count - a key differentiator versus open-loop amplifiers like the LMH6554MFX/NOPB, which require external compensation.
What is the maximum output current capability of the LMH6559MFX/NOPB?
The LMH6559MFX/NOPB delivers ±74 mA linear output current (sourcing/sinking) under ±5 V supply with VIN–VOUT = ±0.5 V. Short-circuit current exceeds ±83 mA. This enables direct driving of 50 Ω or 75 Ω coaxial cables and heavy capacitive loads (e.g., >100 pF) without external buffers - confirmed in TI SNOSA57C Figure 28–29 and Electrical Characteristics Table.
Does the LMH6559MFX/NOPB meet broadcast video specifications?
Yes, the LMH6559MFX/NOPB meets broadcast-grade video requirements: 0.06% differential gain and 0.02° differential phase at 3.58 MHz (NTSC color subcarrier), verified per TI SNOSA57C Figure 7. These values satisfy SMPTE RP-168 and ITU-R BT.470 for professional video routing, switching, and distribution equipment - distinguishing it from general-purpose op amps with >0.2% DG error.
What package type is used for the LMH6559MFX/NOPB?
The LMH6559MFX/NOPB is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) with package code D (R-PDSO-G8), per TI SNOSA57C Figure 2. It is not offered in SOT-23; that variant corresponds to the LMH6559MF/NOPB. The SOIC package provides robust thermal performance (θJA = 172°C/W) and standard surface-mount compatibility for automated PCB assembly.
LMH6559MFX/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:
- Buffer
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 4580V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.75 GHz
- Current - Input Bias:
- 3 µA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 10mA
- Current - Output / Channel:
- 74 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMH6559MFX/NOPB FAQ
1.How can I place an order for LMH6559MFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6559MFX/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 LMH6559MFX/NOPB reliable?
The price and inventory of LMH6559MFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6559MFX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6559MFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6559MFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6559MFX/NOPB?
LMH6559MFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6559MFX/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 LMH6559MFX/NOPB?
For technical support, including LMH6559MFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6559MFX/NOPB requirements.
6.How does Aetrix verify that LMH6559MFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6559MFX/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 LMH6559MFX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6559MFX/NOPB?
All LMH6559MFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6559MFX/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 LMH6559MFX/NOPB part is unused and in its original packaging.
Return procedure for LMH6559MFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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