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Texas Instruments LMH6657MF/NOPB
- Part No.:
- LMH6657MF/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMH6657MF/NOPB.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:582
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Product details
Overview
LMH6657MF/NOPB from Texas Instruments is a single-channel, voltage-feedback operational amplifier optimized for high-speed, low-distortion applications including video buffering and ADC/DAC interface circuits. It delivers 270-MHz −3dB bandwidth (AV = +1), 700 V/µs slew rate, and ±80/−90 mA output drive capability while operating from a 3-V to 12-V single supply or ±2.5-V to ±6-V dual supply - enabling use in portable video systems and instrumentation front-ends.
For engineers reviewing the LMH6657MF/NOPB datasheet, LMH6657MF/NOPB pinout, LMH6657MF/NOPB application, or LMH6657MF/NOPB equivalent, key selection criteria include its rail-to-rail output swing (0.8 V from rails at 2 kΩ), 0.03% differential gain / 0.10° differential phase performance for NTSC video, and input common-mode range extending 0.5 V below V− - critical for ground-referenced signal conditioning.
Technical Context
The LMH6657MF/NOPB employs a voltage-feedback architecture with a 140-MHz gain-bandwidth product and low input-referred voltage noise (11 nV/√Hz at 100 kHz). Its input stage supports operation with common-mode voltages down to 0.5 V below V−, enabling direct amplification of near-ground signals without level-shifting circuitry.
Output stage design provides symmetrical sourcing/sinking current (±80/−90 mA typical) and fast settling (37 ns to 0.1%) with minimal overshoot (18%). The amplifier maintains stable operation across AV = +1 to +10 configurations and exhibits no phase reversal when input common-mode range is exceeded.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 270 MHz at AV = +1 - enables wideband signal amplification up to UHF frequencies without gain peaking |
| Slew Rate | 700 V/µs at ±5 V supply - supports clean 5-VPP, 50-MHz square wave reproduction |
| Supply Range | 3 V to 12 V single supply or ±2.5 V to ±6 V dual supply - compatible with battery-powered and industrial rail systems |
| Output Current | +80 mA / −90 mA - drives 75 Ω video loads or 500 Ω ADC inputs directly without external buffers |
| DG/DP Error | 0.03% / 0.10° at NTSC - meets broadcast-grade video fidelity requirements |
| Input Voltage Noise | 11 nV/√Hz at 100 kHz - preserves SNR in precision analog front-ends |
| Settling Time | 37 ns to 0.1% - suitable for high-speed data acquisition sampling clocks |
Pinout & Package
LMH6657MF/NOPB is housed in a 5-pin SC70 package (2.00 mm × 1.25 mm body size), optimized for space-constrained portable designs. Pin functions are validated per TI SNOSA35G Rev G.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Amplified signal source; capable of ±80/−90 mA drive into resistive or capacitive loads |
| 2 - V− | Negative Supply | Ground reference or negative rail connection; supports single-supply operation with input extending below this node |
| 3 - +IN | Noninverting Input | High-impedance (4 MΩ) node accepting signals down to 0.5 V below V− |
| 4 - −IN | Inverting Input | High-impedance node used for feedback network connection in standard op-amp configurations |
| 5 - V+ | Positive Supply | Primary power rail; accepts 3–12 V (single) or up to ±6 V (dual) with full specification compliance |
Key Features
| Feature | Design Value |
|---|---|
| No output phase reversal | Guaranteed operation without polarity inversion even when input exceeds common-mode range - eliminates latch-up risk in overdriven video or sensor interfaces |
| Rail-to-rail output swing | Swings within 0.8 V of either supply rail at 2 kΩ load - maximizes dynamic range in low-voltage systems |
| Input beyond rail capability | Accepts common-mode voltages 0.5 V below V− - enables direct amplification of ground-referenced sensor outputs |
| Output short-circuit protection | Internally limited current prevents damage during accidental shorts; safe for continuous operation at VS < 6 V |
| Low THD at 5 MHz | −55 dBc total harmonic distortion - preserves signal integrity in RF IF stages and high-fidelity audio paths |
Applications
| Video Signal Conditioning | ADC Front-End Buffering |
|---|---|
Use Scenario: Amplifying composite NTSC video signals in portable DVD players and set-top boxes. IC Role / Device Role / Timing Role: Video driver with DC-coupled output and precise gain flatness across 0–10 MHz. Use Value: 0.03% DG / 0.10° DP error ensures color fidelity compliant with broadcast standards without external calibration. | Use Scenario: Driving the input of 12-bit, 50-MSPS analog-to-digital converters in test equipment. IC Role / Device Role / Timing Role: High-slew-rate buffer isolating ADC input from source impedance variations. Use Value: 37 ns 0.1% settling time and 700 V/µs slew rate prevent aperture uncertainty and maintain ENOB under fast step transients. |
| Current-Sense Amplification | Portable Communications Interface |
Use Scenario: Amplifying millivolt-level shunt resistor voltages in battery management ICs. IC Role / Device Role / Timing Role: Precision low-offset, low-noise amplifier with input extending below system ground. Use Value: 0.5 V beyond V− input range allows direct sensing of negative-side shunts without level shifters. | Use Scenario: Signal conditioning in Bluetooth/WiFi module baseband chains. IC Role / Device Role / Timing Role: Low-power, high-speed gain block for I/Q path amplification. Use Value: 6.2 mA supply current at 5 V and 270-MHz bandwidth enable compact RF subsystems with minimal thermal overhead. |
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 | Lower 130-MHz bandwidth, 220 V/µs slew rate, but lower 2.7-mA supply current | Better suited for power-sensitive medium-speed applications where 270-MHz BW is unnecessary | Select when optimizing for quiescent power over speed; not drop-in due to different AC performance envelope |
| THS3201DBVT | Higher 1.8-GHz bandwidth and 6000 V/µs slew rate, but requires ±5 V minimum and draws 12.5 mA | Targeted at RF/IF gain blocks and pulse amplification, not video or general-purpose buffering | Choose only when >1-GHz bandwidth is mandatory; incompatible supply and layout due to higher speed and power |
Compared with LMH6657MF/NOPB, LMH6642MF/NOPB trades bandwidth for lower power, while THS3201DBVT targets ultra-high-frequency applications at significantly higher supply and layout complexity - making LMH6657MF/NOPB the optimal balance for video, ADC buffering, and portable communications where 270-MHz BW and 700 V/µs are required within 6.2-mA power budget.
Availability
LMH6657MF/NOPB is available at Aetrix Electronics and suitable for video signal conditioning, ADC front-end buffering, and portable communications applications requiring stable component supply, long-term manufacturability, and TI's industry-standard quality assurance.
Supply support for LMH6657MF/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 delivering analog and embedded processing solutions, with over 90 years of innovation in high-performance analog ICs.
The LMH6657MF/NOPB belongs to TI's high-speed voltage-feedback op-amp product line, engineered specifically for video, instrumentation, and communications systems demanding wide bandwidth, low distortion, and robust rail-to-rail output drive.
FAQ
What is the maximum supply voltage for LMH6657MF/NOPB?
The LMH6657MF/NOPB supports a maximum supply voltage of 12 V for single-supply operation or ±6 V for dual-supply operation, as specified in the Absolute Maximum Ratings table of the TI SNOSA35G datasheet. Exceeding these limits risks permanent device damage, and operation above 12 V (or ±6 V) is not characterized or guaranteed.
Does LMH6657MF/NOPB support rail-to-rail input?
No, LMH6657MF/NOPB does not support rail-to-rail input. Its input common-mode voltage range extends 0.5 V below V− and 1.7 V from V+, meaning it accepts inputs down to V− − 0.5 V but not to V− or V+. However, the output is rail-to-rail - swinging within 0.8 V of both supply rails under 2-kΩ load.
Can LMH6657MF/NOPB be used with a 3.3-V single supply?
Yes, LMH6657MF/NOPB is fully specified and functional with a 3.3-V single supply (V+ = 3.3 V, V− = 0 V). Key parameters including 270-MHz bandwidth, 700 V/µs slew rate, and 0.03% DG error remain valid per TI's recommended operating conditions and electrical characteristics tables at 3.3 V.
What is the thermal resistance (RθJA) of the SC70 package for LMH6657MF/NOPB?
The junction-to-ambient thermal resistance (RθJA) for LMH6657MF/NOPB in the SC70 (DCK) package is 478 °C/W, as documented in Section 6.4 of the TI SNOSA35G datasheet. This value assumes standard JEDEC 2-layer board conditions and must be factored into power dissipation calculations at elevated ambient temperatures.
Is LMH6657MF/NOPB pin-compatible with other members of the LMH665x family?
No, LMH6657MF/NOPB (5-pin SC70) is not pin-compatible with LMH6658 (dual, 8-pin SOIC/VSSOP) or LMH6657 variants in SOT-23 or SOIC packages. Pin count, pinout, and package footprint differ across variants - PCB layout must be specific to the SC70-5 configuration used by LMH6657MF/NOPB.
LMH6657MF/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:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 700V/µs
- Gain Bandwidth Product:
- 140 MHz
- -3db Bandwidth:
- 270 MHz
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 6.5mA
- Current - Output / Channel:
- 110 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-23-5
LMH6657MF/NOPB FAQ
1.How can I place an order for LMH6657MF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6657MF/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 LMH6657MF/NOPB reliable?
The price and inventory of LMH6657MF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6657MF/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6657MF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6657MF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6657MF/NOPB?
LMH6657MF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6657MF/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 LMH6657MF/NOPB?
For technical support, including LMH6657MF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6657MF/NOPB requirements.
6.How does Aetrix verify that LMH6657MF/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6657MF/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 LMH6657MF/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6657MF/NOPB?
All LMH6657MF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6657MF/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 LMH6657MF/NOPB part is unused and in its original packaging.
Return procedure for LMH6657MF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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