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Texas Instruments LMH6639MA/NOPB
- Part No.:
- LMH6639MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6639MA/NOPB.pdf
- Description:
- LMH6639 190MHZ RAIL-TO-RAIL OUTP
- Quantity:
- Payment:
- Shipping:
Inventory:10,605
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Product details
Overview
LMH6639MA/NOPB from Texas Instruments (formerly National Semiconductor) is a 190MHz rail-to-rail output voltage-feedback operational amplifier with integrated shutdown control, delivering 110mA linear output current and 172V/µs slew rate at 5V supply. It operates from 3V to 12V single supply or ±5V dual supply, features 33ns settling time (±0.1%), −60dBc THD at 5MHz, and is optimized for high-speed video buffering, ADC driving, and multiplexing applications.
For engineers reviewing the LMH6639MA/NOPB datasheet, LMH6639MA/NOPB pinout, LMH6639MA/NOPB application, or LMH6639MA/NOPB equivalent, key selection criteria include its 190MHz unity-gain bandwidth, rail-to-rail output swing within 40mV of rails, 83nsec turn-on time after shutdown, differential gain/phase of 0.12%/0.045° (NTSC), and SOIC-8 package compatibility with industrial temperature range (−40°C to +85°C).
Technical Context
The LMH6639MA/NOPB employs National's VIP10 process to achieve wide bandwidth with low quiescent current (3.6mA typical at 5V). Its input common-mode range extends to 0.2V below V− and within 1V of V+, enabling true single-supply operation. The output stage delivers rail-to-rail swing (within 40mV of either rail) and 110mA sourcing/sinking capability without phase reversal when CMVR is exceeded.
Integrated shutdown functionality is controlled by a V+–referenced SD pin with 1.65V threshold (at 5V supply), 83nsec turn-on delay, and −70dB off-isolation at 1MHz. Input protection includes anti-parallel diodes and series resistors, while stability is ensured across all gains including +1, with fully characterized performance at 3V, 5V, and ±5V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth (AV = +1) | 190MHz at 5V supply - enables high-fidelity signal amplification up to UHF frequencies |
| Slew Rate | 172V/µs - supports full-power 28MHz sine wave output without distortion |
| Settling Time (±0.1%) | 33ns - critical for fast data acquisition and multiplexed video switching |
| Output Swing | Within 40mV of either rail at 5V - maximizes dynamic range in low-voltage systems |
| Total Harmonic Distortion | −60dBc at 5MHz - meets broadcast-quality video line driving requirements |
| Differential Gain / Phase | 0.12% / 0.045° (NTSC, RL = 150Ω) - preserves color fidelity in composite video paths |
| Supply Current (Enabled) | 3.6mA typical at 5V - balances speed and power efficiency for portable designs |
| Shutdown Current | 400µA typical - reduces system standby power without external circuitry |
Pinout & Package
LMH6639MA/NOPB is packaged in an 8-pin SOIC (NS Package M08A) with θJA = 190°C/W. Pin functions are validated per National Semiconductor's official connection diagram (Document No. 20030202).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Internally unused; must be left floating or grounded per layout guidelines |
| 2 (IN−) | Inverting Input | Differential input node; protected by series resistor and anti-parallel diodes |
| 3 (IN+) | Non-Inverting Input | Differential input node; supports common-mode range down to −0.2V (V−) |
| 4 (V−) | Negative Supply | Ground reference in single-supply mode; accepts −5V in dual-supply operation |
| 5 (SD) | Shutdown Control | V+-referenced digital input; <1.65V disables amplifier, >1.7V enables |
| 6 (OUT) | Output | Rail-to-rail capable; delivers 110mA linear current into 150Ω loads |
| 7 (V+) | Positive Supply | Accepts 3V–12V single supply or +5V in dual-supply configuration |
| 8 (NC) | No Connect | Internally unused; no electrical connection required |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 40mV of V+ or V− at 5V - preserves >99% of available voltage headroom |
| Fast enable/disable timing | TON = 83nsec, TOFF = 160nsec - enables precise time-gated signal routing |
| Input overvoltage protection | Anti-parallel diodes + series resistors - withstands ±2.5V differential input |
| Video-optimized AC performance | DG = 0.12%, DP = 0.045°, THD = −60dBc - meets NTSC/PAL broadcast standards |
| Stable at unity gain | No phase reversal beyond CMVR; flat frequency response at AV = +1 - eliminates need for gain-setting compensation |
| Wide supply range | 3V to 12V single supply or ±5V - supports battery-powered and industrial rail systems |
Applications
| Active Video Filtering | High-Speed ADC Buffering |
|---|---|
Use Scenario: Post-processing analog video signals in DVD/CD-ROM players before digitization or display. IC Role / Device Role / Timing Role: Rail-to-rail output buffer driving 75Ω coaxial cable with minimal group delay variation. Use Value: 0.12% differential gain and 0.045° differential phase ensure accurate color reproduction without hue/saturation shift. |
Use Scenario: Driving the input of a 10-bit, 50MSPS analog-to-digital converter in portable test equipment. IC Role / Device Role / Timing Role: High-slew-rate, low-settling-time buffer isolating source impedance from ADC sampling capacitor. Use Value: 33ns settling time (±0.1%) and 190MHz bandwidth prevent aperture error and maintain ENOB across full Nyquist band. |
| Portable Video Signal Routing | Current Sense Amplifier Interface |
Use Scenario: Multiplexing dual-frequency video streams (e.g., 5MHz and 10MHz) in handheld medical imaging displays. IC Role / Device Role / Timing Role: Shutdown-controlled gain stage enabling fast channel selection with 83nsec turn-on latency. Use Value: −70dB off-isolation at 1MHz prevents crosstalk between active and disabled signal paths during switching. |
Use Scenario: Amplifying mV-level shunt voltage in battery management systems with 3.3V microcontroller interface. IC Role / Device Role / Timing Role: Precision DC-coupled buffer with rail-to-rail output matching MCU ADC input range. Use Value: Input CMVR extending to −0.2V below ground allows accurate sensing of bidirectional current flow in low-side configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3201DR | Higher slew rate (4300V/µs), wider bandwidth (1.8GHz), but 12mA supply current and no shutdown | Better for RF/IF signal chain stages; unsuitable where low-power shutdown is required | Select THS3201DR only when extreme speed outweighs power and feature trade-offs |
| OPA695ID | 1.7GHz bandwidth, 4300V/µs slew rate, 13.5mA supply current, no rail-to-rail output (swing limited to 1.2V from rails) | Preferred for wideband IF amplification; cannot replace LMH6639MA/NOPB in rail-to-rail output or low-voltage video applications | Choose OPA695ID for GHz-range small-signal gain; avoid where output swing or shutdown control is mandatory |
Compared with THS3201DR and OPA695ID, LMH6639MA/NOPB uniquely combines 190MHz bandwidth, rail-to-rail output, sub-4µA shutdown current, and NTSC-qualified video performance in a single SOIC-8 package-making it irreplaceable in portable video, multiplexed ADC buffering, and low-power analog front-ends requiring precise timing control.
Availability
LMH6639MA/NOPB is available at Aetrix Electronics and suitable for active filters, portable video interfaces, and high-speed ADC buffer applications requiring stable component supply across industrial temperature ranges and long-term production cycles.
Supply support for LMH6639MA/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 acquired National Semiconductor in 2011 and maintains full technical and manufacturing continuity for legacy high-performance analog products.
The LMH6639MA/NOPB belongs to National's VIP10 high-speed op-amp family, engineered specifically for video signal conditioning, precision data acquisition, and time-critical analog multiplexing in resource-constrained systems.
FAQ
What is the maximum supply voltage rating for LMH6639MA/NOPB?
The LMH6639MA/NOPB has an absolute maximum supply voltage (V+ – V−) of 13.5V. It operates reliably across 3V to 12V single supply or ±5V dual supply ranges. Exceeding 13.5V risks permanent damage to internal ESD protection structures and input transistors, as confirmed in the Absolute Maximum Ratings table on page 1 of the official datasheet.
Does LMH6639MA/NOPB support rail-to-rail input operation?
No, LMH6639MA/NOPB does not support rail-to-rail input. Its input common-mode voltage range extends to −0.2V below V− and within 1V of V+ (e.g., −0.2V to 4V at 5V supply). This enables true single-supply use but requires input signals to remain within those bounds to maintain specified CMRR (>72dB) and avoid clipping or increased offset drift.
How does the shutdown function behave under dual-supply conditions?
Under ±5V operation, the LMH6639MA/NOPB's shutdown pin (Pin 5) remains referenced to V+ (+5V), so the threshold is V+ − 1.67V = +3.33V. Pulling SD below +3.33V disables the amplifier, drawing only 758µA typical. This V+-referenced design simplifies interface with both single- and dual-supply logic without level-shifting circuitry, as detailed in Figure 7 of the Application Notes section.
Can LMH6639MA/NOPB drive a 75Ω video load directly?
Yes, LMH6639MA/NOPB is fully characterized driving 150Ω loads (e.g., differential gain/phase specs at RL = 150Ω), and its 110mA output current supports 75Ω termination with appropriate gain configuration. At 5V supply, it delivers >4.65V swing into 150Ω; derating applies for 75Ω, but published harmonic distortion (−60dBc) and settling time (33ns) remain valid under standard video test conditions per datasheet Section 5.
Is LMH6639MA/NOPB suitable for use as a comparator?
LMH6639MA/NOPB is not recommended as a comparator. Its internal input protection diodes conduct under large differential inputs (±2.5V max), causing excessive input current and potential output corruption during overdrive. The datasheet explicitly warns against comparator use in the "Input and Output Topology" application note (page 14), citing risk of violating absolute maximum ratings and degraded switching behavior versus purpose-built comparators.
LMH6639MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- VIP10™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 200V/µs
- Gain Bandwidth Product:
- 90 MHz
- -3db Bandwidth:
- 228 MHz
- Current - Input Bias:
- 1.4 nA
- Voltage - Input Offset:
- 1.3 mV
- Current - Supply:
- 4.18mA
- Current - Output / Channel:
- 112 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMH6639MA/NOPB FAQ
1.How can I place an order for LMH6639MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6639MA/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 LMH6639MA/NOPB reliable?
The price and inventory of LMH6639MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6639MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6639MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6639MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6639MA/NOPB?
LMH6639MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6639MA/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 LMH6639MA/NOPB?
For technical support, including LMH6639MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6639MA/NOPB requirements.
6.How does Aetrix verify that LMH6639MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6639MA/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 LMH6639MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6639MA/NOPB?
All LMH6639MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6639MA/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 LMH6639MA/NOPB part is unused and in its original packaging.
Return procedure for LMH6639MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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