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Texas Instruments LMH6639MFX/NOPB
- Part No.:
- LMH6639MFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
LMH6639MFX/NOPB.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,008
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Product details
Overview
LMH6639MFX/NOPB from Texas Instruments is a 190MHz rail-to-rail output voltage-feedback operational amplifier with shutdown control, 3.6mA supply current (enabled), 110mA linear output drive, and 33ns settling time at ±0.1%. It operates from 3V to 12V single supply or ±5V dual supply and is used in high-speed ADC buffering, portable video signal conditioning, and active filter stages.
For engineers reviewing the LMH6639MFX/NOPB datasheet, LMH6639MFX/NOPB pinout, LMH6639MFX/NOPB application, or LMH6639MFX/NOPB equivalent, key selection criteria include rail-to-rail output swing (40mV from rails), shutdown isolation (−70dB @ 1MHz), differential gain/phase (0.12%/0.045°), and no output phase reversal over full input common-mode range.
Technical Context
The LMH6639MFX/NOPB employs TI's VIP10 process to achieve 190MHz −3dB bandwidth at AV = +1 under 5V supply while maintaining 172V/μs slew rate and 28MHz full-power bandwidth. Its input stage features anti-parallel diodes and series resistors for ±2.5V differential input protection, and the shutdown function enables fast on/off switching (TON = 83ns, TOFF = 160ns) without output phase reversal.
It supports stable operation at unity gain and higher, with fully characterized performance across 3V, 5V, and ±5V supplies. The device delivers rail-to-rail output swing (within 30mV of either rail), wide input common-mode range (−0.2V to 4V on 5V supply), and low closed-loop output resistance (253mΩ @ 1MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 190MHz at AV = +1, 5V supply - enables high-fidelity video and RF signal amplification without gain peaking. |
| Supply Current (Enabled) | 3.6mA typical - allows low-power operation in battery-powered portable video and instrumentation systems. |
| Output Drive Capability | 110mA linear sourcing/sinking - drives 150Ω video loads or ADC input capacitors without distortion. |
| Settling Time | 33ns to ±0.1% - meets timing requirements for high-speed data acquisition and multiplexed signal paths. |
| Input Common-Mode Range | −0.2V to 4V on 5V supply - supports true single-supply operation with ground-referenced inputs. |
| Shutdown Isolation | −70dB @ 1MHz - suppresses crosstalk in multiplexer applications when amplifier is disabled. |
| Total Harmonic Distortion | −60dBc @ 5MHz - ensures clean signal integrity in NTSC video and precision analog front-ends. |
Pinout & Package
LMH6639MFX/NOPB is packaged in SOT-23-6, a space-constrained surface-mount package with thermal resistance θJA = 265°C/W. Pin assignments are validated per TI SNOS989G datasheet Figure 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply rail connection - accepts 3V to 12V single supply or +5V in dual-supply configuration. |
| 2 | Inverting Input (−IN) | Differential input node - internal ESD protection diodes clamp to V+ and V− rails at ~1V beyond rails. |
| 3 | Non-inverting Input (+IN) | Differential input node - common-mode range extends to −0.2V below V− and within 1V of V+. |
| 4 | V− | Negative supply rail - grounded for single-supply use; −5V for dual-supply operation. |
| 5 | Output | Rail-to-rail output capable of swinging within 30mV of V+ or V− - supports full dynamic range in low-voltage systems. |
| 6 | Shutdown (SD) | Active-low enable control - device disables when SD < (V+ − 1.65V); draws only 400μA in off mode. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 30mV of either supply rail at 110mA load - maximizes signal headroom in 3.3V/5V systems. |
| Fast shutdown switching | 83ns turn-on / 160ns turn-off - enables precise timing control in multiplexed video or data acquisition paths. |
| No output phase reversal | Guaranteed over full CMVR (−0.2V to 4V on 5V) - eliminates signal inversion artifacts during input transients. |
| Input overvoltage protection | Anti-parallel diodes + series resistors limit differential input to ±2.5V - prevents latch-up in comparator or shutdown modes. |
| Low distortion video performance | 0.12% differential gain / 0.045° differential phase - meets NTSC/PAL broadcast-grade linearity requirements. |
Applications
| ADC Buffer Amplifier | Portable Video Signal Chain |
|---|---|
Use Scenario: Driving SAR or pipeline ADC inputs with fast-settling, low-distortion analog signals. IC Role / Device Role / Timing Role: High-speed buffer isolating sensor front-end from ADC sampling capacitance and providing gain/level shift. Use Value: 33ns settling time and −60dBc THD ensure accurate digitization of 5–10MHz video or IF signals without aperture error. |
Use Scenario: Conditioning composite video (CVBS) or RGB signals in handheld displays or camcorders. IC Role / Device Role / Timing Role: Gain stage and DC restoration buffer before video DAC or display driver. Use Value: 0.12% differential gain and 0.045° phase preserve color fidelity; rail-to-rail output matches 3.3V display interface levels. |
| Active Filter Stage | Current Sense Buffer |
Use Scenario: Implementing 2nd-order high-speed low-pass or band-pass filters in power supply monitoring or RF front-ends. IC Role / Device Role / Timing Role: Unity-gain stable voltage-feedback amplifier configuring filter transfer function with precision resistors/capacitors. Use Value: 190MHz bandwidth and 172V/μs slew rate support filter cutoffs up to 20MHz without phase lag degradation. |
Use Scenario: Amplifying mV-level shunt resistor voltage drops in motor control or battery management systems. IC Role / Device Role / Timing Role: Low-offset, high-CMRR buffer converting bidirectional current sense voltage to single-ended output. Use Value: −0.2V to 4V input common-mode range accommodates shunt placed on high-side or low-side; 95dB CMRR rejects supply noise. |
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 |
|---|---|---|---|
| LMH6642MF/NOPB | Higher supply current (6.5mA), wider bandwidth (240MHz), SOIC-8 only - no SOT-23-6 option. | Better suited for >20MHz filter design or RF IF amplification where power budget permits. | Select LMH6642MF/NOPB when bandwidth >200MHz is required and board space allows SOIC-8. |
| THS3201DBVR | Current-feedback architecture, 1.8GHz bandwidth, 4000V/μs slew rate - requires careful layout and feedback resistor optimization. | Targeted at ultra-high-speed applications like pulse amplification or optical receiver TIA stages. | Choose THS3201DBVR only for >500MHz small-signal gain or sub-10ns transient response needs. |
Compared with LMH6639MFX/NOPB, LMH6642MF/NOPB trades 2.9× higher quiescent current for 26% more bandwidth and improved harmonic performance, while THS3201DBVR offers 9.5× higher slew rate but demands specialized CFB design practices and lacks integrated shutdown.
Availability
LMH6639MFX/NOPB is available at Aetrix Electronics and suitable for portable video, ADC buffering, and active filter applications requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.
Supply support for LMH6639MFX/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 signal chain solutions.
The LMH6639MFX/NOPB belongs to TI's high-speed voltage-feedback op-amp product line, designed specifically for low-voltage, low-power, rail-to-rail output applications in portable video, test equipment, and data acquisition systems.
FAQ
What is the maximum supply voltage rating for LMH6639MFX/NOPB?
The LMH6639MFX/NOPB has an absolute maximum supply voltage (V+ − V−) of 13.5V. Its operating supply range is 3V to 12V for single supply or ±5V for dual supply. Exceeding 13.5V risks permanent damage to the internal VIP10 process transistors, as confirmed in the Absolute Maximum Ratings table of TI SNOS989G.
Does LMH6639MFX/NOPB support true single-supply operation with ground-referenced inputs?
Yes. The LMH6639MFX/NOPB supports true single-supply operation: its input common-mode voltage range extends to −0.2V below V− (i.e., −0.2V with V− = 0V) and to within 1V of V+, enabling direct connection of ground-referenced sensors or DAC outputs without level-shifting circuitry.
What is the shutdown behavior of LMH6639MFX/NOPB when the SD pin is left floating?
When the SD pin is left floating, the LMH6639MFX/NOPB may enter unintended shutdown due to capacitive coupling or noise. TI recommends tying SD directly to V+ for reliable normal operation. The device asserts shutdown when SD falls below (V+ − 1.65V), drawing only 400μA in that state.
Can LMH6639MFX/NOPB drive a 150Ω video load while maintaining NTSC specifications?
Yes. At 5V supply, LMH6639MFX/NOPB delivers 0.12% differential gain and 0.045° differential phase into a 150Ω load at NTSC frequencies, meeting broadcast-grade video linearity standards. Its 110mA output current ensures stable 1VPP signal delivery without clipping or distortion.
Is LMH6639MFX/NOPB unity-gain stable?
Yes. The LMH6639MFX/NOPB is explicitly characterized and guaranteed stable at AV = +1 across all supply voltages (3V, 5V, ±5V). Its voltage-feedback architecture and internal compensation eliminate the need for external stabilization components in unity-gain buffer configurations.
LMH6639MFX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- VIP10™
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- 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 µA
- 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:
- SOT-23-6
LMH6639MFX/NOPB FAQ
1.How can I place an order for LMH6639MFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6639MFX/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 LMH6639MFX/NOPB reliable?
The price and inventory of LMH6639MFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6639MFX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6639MFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6639MFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6639MFX/NOPB?
LMH6639MFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6639MFX/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 LMH6639MFX/NOPB?
For technical support, including LMH6639MFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6639MFX/NOPB requirements.
6.How does Aetrix verify that LMH6639MFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6639MFX/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 LMH6639MFX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6639MFX/NOPB?
All LMH6639MFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6639MFX/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 LMH6639MFX/NOPB part is unused and in its original packaging.
Return procedure for LMH6639MFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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