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Texas Instruments LMH6559MA
- Part No.:
- LMH6559MA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6559MA.pdf
- Description:
- IC BUFFER 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,010
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Product details
Overview
LMH6559MA from Texas Instruments is a high-speed, unity-gain closed-loop buffer IC designed for video signal distribution and wideband analog signal routing on PCBs. It delivers 1750 MHz small-signal bandwidth, 4580 V/µs slew rate, and 0.06% / 0.02° differential gain/phase at 3.58 MHz - enabling distortion-free composite video buffering in broadcast and test equipment.
For engineers reviewing the LMH6559MA datasheet, LMH6559MA pinout, LMH6559MA application, or LMH6559MA equivalent, key selection criteria include its ±5V/5V/3V supply flexibility, 1.2 Ω output resistance, 200 kΩ input resistance, −52 dBc THD at 20 MHz, and SOIC-8 package compatibility with high-frequency layout practices.
Technical Context
The LMH6559MA operates as a fixed-gain-1 buffer with internally configured feedback, eliminating external resistors and minimizing layout sensitivity. Its VIP10 BiCMOS process enables simultaneous high bandwidth (1750 MHz under ±5V) and ultrafast transient response (0.4 ns rise time, 9 ns settling to ±0.1%).
No external compensation is required; stability is guaranteed into 100 Ω loads and capacitive loads up to 100 pF. Input common-mode range extends to within 1.2 V of rails, and output swing reaches ±3.2 V into 100 Ω under ±5V supply - supporting full-scale video and RF intermediate-frequency signal handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small Signal Bandwidth | 1750 MHz at ±5V supply - supports baseband video and IF signals up to UHF without attenuation |
| Slew Rate | 4580 V/µs - ensures faithful reproduction of fast-edged digital video sync pulses and pulse-modulated waveforms |
| Differential Gain/Phase | 0.06% / 0.02° at 3.58 MHz - meets NTSC/PAL broadcast-grade video fidelity requirements |
| THD | −52 dBc at 20 MHz, 2 VPP into 100 Ω - preserves spectral purity in wideband instrumentation front-ends |
| Output Resistance | 1.2 Ω at 100 kHz - enables direct 50 Ω/75 Ω transmission line driving without series termination |
| Supply Current | 10 mA typical at ±5V - achieves high speed with low power, critical for multi-channel video systems |
| Input Resistance | 200 kΩ - minimizes loading on preceding stages such as ADC drivers or filter outputs |
Pinout & Package
LMH6559MA is supplied in an 8-pin SOIC package (Package Number D, R-PDSO-G8), with exposed pad not present. Thermal resistance θJA = 172°C/W on standard 2-layer PCB.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC (Positive Supply) | Connects to +5V (or +3V to +10V); decoupling with 100 nF ceramic + 10 nF RF cap required near pin |
| 2 | Inverting Input (NC) | No internal connection; must be left unconnected or grounded per layout best practice |
| 3 | Non-Inverting Input | High-impedance (200 kΩ) signal input; sensitive to parasitic capacitance - keep trace short and guard |
| 4 | VEE (Negative Supply) | Connects to −5V (or GND in single-supply mode); requires local 100 nF decoupling |
| 5 | Output | Low-impedance (1.2 Ω) buffered output; capable of sourcing/sinking ±74 mA linearly |
| 6 | NC | No internal connection; electrically isolated - do not route or connect |
| 7 | NC | No internal connection; electrically isolated - do not route or connect |
| 8 | VCC (Positive Supply) | Second VCC pin - must be tied to same supply as Pin 1; improves PSRR and high-frequency supply rejection |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable, no external components | Eliminates feedback resistor matching errors and board space; reduces phase shift vs. op-amp-based buffers |
| 75 mA linear output current | Drives multiple 75 Ω video loads or long PCB traces without gain droop or distortion |
| Single-supply operation down to 3V | Enables portable and low-voltage instrumentation designs while retaining >300 MHz bandwidth |
| −52 dBc THD at 20 MHz | Meets dynamic range requirements for 10-bit+ video digitization and spectrum analyzer front-ends |
| 0.4 ns rise time (20–80%) | Preserves edge integrity in HD/SDI timing recovery circuits and high-speed test point probing |
Applications
| Video Switching and Routing | Test Point Drivers |
|---|---|
Use Scenario: Routing composite NTSC/PAL signals across matrix switchers in broadcast control rooms. IC Role / Device Role / Timing Role: Closed-loop buffer isolating source from switching capacitance and maintaining signal integrity across 16+ outputs. Use Value: 0.06% DG/0.02° DP ensures color fidelity; 1750 MHz SSBW prevents high-frequency luma roll-off during switching transients. | Use Scenario: Providing low-impedance, high-fidelity access points on high-speed digital or RF PCBs for oscilloscope probing. IC Role / Device Role / Timing Role: Active test point buffer preventing probe loading-induced jitter and signal degradation. Use Value: 1.2 Ω output impedance and 4580 V/µs slew rate preserve nanosecond-scale edge fidelity; 10 mA quiescent current minimizes system power impact. |
| High Frequency Active Filters | Wideband DC Clamping Buffers |
Use Scenario: Output stage of 500 MHz elliptic low-pass filters in microwave receiver IF chains. IC Role / Device Role / Timing Role: Buffer isolating filter output from variable load impedance while preserving group delay flatness. Use Value: 1750 MHz bandwidth exceeds filter cutoff by >3×, ensuring no additional roll-off; 200 kΩ input resistance avoids filter Q degradation. | Use Scenario: DC restoration stage in video clamping circuits for CRT monitors and legacy display interfaces. IC Role / Device Role / Timing Role: High-speed buffer maintaining clamped DC level accuracy during blanking intervals. Use Value: 9 ns settling to ±0.1% ensures accurate black-level restoration within 1 µs blanking windows; rail-to-rail compatible output swing supports 1–2 VPP video standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar closed-loop buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6552MA | Lower bandwidth (900 MHz), higher supply current (13.5 mA), same SOIC-8 package | Targeted at cost-sensitive video distribution where <1 GHz BW suffices; less suitable for >1 GHz IF routing | Select when 1750 MHz is unnecessary and power budget allows higher IQ |
| THS3201D | Higher slew rate (6000 V/µs), wider supply range (±5V to ±15V), but requires external feedback network | Used in precision high-voltage pulse amplification; lacks integrated unity-gain configuration | Choose only if adjustable gain or >±10V operation is required; adds design complexity and layout sensitivity |
Compared with LMH6552MA and THS3201D, the LMH6559MA uniquely combines factory-configured unity gain, 1750 MHz bandwidth, and sub-10 mA quiescent current - making it optimal for space-constrained, multi-channel video routing where simplicity, speed, and power efficiency are jointly critical.
Availability
LMH6559MA is available at Aetrix Electronics and suitable for video switching and routing, test point drivers, high-frequency active filters, and wideband DC clamping buffers requiring stable component supply across industrial and broadcast production cycles.
Supply support for LMH6559MA 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, embedded processing, and connectivity solutions with deep expertise in high-speed signal chain design.
The LMH6559MA belongs to TI's high-speed buffer product line, engineered specifically for distortion-critical video, instrumentation, and communications infrastructure where bandwidth, linearity, and layout simplicity must coexist.
FAQ
What is the maximum supply voltage rating for the LMH6559MA?
The LMH6559MA has an absolute maximum supply voltage (V+ – V−) rating of 13 V. Operation beyond this limit risks permanent damage. Recommended operating range is 3 V to 10 V total supply span - e.g., ±5 V (10 V), +5 V/0 V (5 V), or +3 V/0 V (3 V). Exceeding 13 V violates Absolute Maximum Ratings per SNOSA57C Rev. March 2013.
Does the LMH6559MA require external compensation components?
No, the LMH6559MA does not require external compensation. It is internally configured as a closed-loop unity-gain buffer with optimized stability across all specified supply voltages and load conditions - including 100 Ω resistive loads and up to 100 pF capacitive loads. This eliminates resistor matching errors and saves PCB area versus op-amp-based alternatives.
Can the LMH6559MA drive 75 Ω video lines directly?
Yes, the LMH6559MA can drive 75 Ω video lines directly. With 1.2 Ω output resistance and ±74 mA linear output current capability, it maintains signal integrity into 75 Ω loads without external series termination. Measured differential gain/phase of 0.06%/0.02° at 3.58 MHz confirms broadcast compliance when driving terminated coaxial video paths.
What is the small-signal bandwidth of the LMH6559MA at 3V single supply?
At 3 V single supply (V+ = 3 V, V− = 0 V), the LMH6559MA delivers 315 MHz small-signal bandwidth (SSBW) with <0.1 dB gain flatness up to 44 MHz. This enables use in battery-powered portable test gear and low-voltage imaging systems where bandwidth trade-offs are acceptable for reduced power consumption.
How does the LMH6559MA handle input overvoltage conditions?
The LMH6559MA specifies absolute maximum input voltage as V+ +0.8 V and V− −0.8 V. Exceeding these limits risks gate oxide damage. For inputs exceeding rail limits - such as AC-coupled video with large DC offsets - external clamping diodes or series current-limiting resistors are recommended. The device lacks built-in overvoltage protection beyond ESD-rated MOS gates.
LMH6559MA 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:
- 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:
- 8-SOIC
LMH6559MA FAQ
1.How can I place an order for LMH6559MA through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6559MA 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 LMH6559MA reliable?
The price and inventory of LMH6559MA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6559MA is usually 5 days.
3.What payment methods are accepted for LMH6559MA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6559MA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6559MA?
LMH6559MA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6559MA 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 LMH6559MA?
For technical support, including LMH6559MA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6559MA requirements.
6.How does Aetrix verify that LMH6559MA is sourced from the original manufacturer or authorized distributors?
All LMH6559MA 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 LMH6559MA meets industry standards.
7.What is the process for return or replacement of LMH6559MA?
All LMH6559MA units undergo pre-shipment inspection (PSI). If there is an issue with LMH6559MA, 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 LMH6559MA part is unused and in its original packaging.
Return procedure for LMH6559MA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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