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Texas Instruments LMH6657MGX/NOPB
- Part No.:
- LMH6657MGX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMH6657MGX/NOPB.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,654
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Product details
Overview
LMH6657MGX/NOPB from Texas Instruments is a single-channel, voltage-feedback operational amplifier optimized for high-speed video and precision analog signal conditioning. It delivers 270MHz −3dB bandwidth (AV = +1), 700V/µs slew rate (±5V supply), 0.03% differential gain and 0.10° differential phase at NTSC, and operates from 3V to 12V single or split supplies. It serves as a buffer/amplifier in ADC front-ends, portable video interfaces, and current-sense circuits.
For engineers reviewing the LMH6657MGX/NOPB datasheet, LMH6657MGX/NOPB pinout, LMH6657MGX/NOPB application, or LMH6657MGX/NOPB equivalent, key selection criteria include its rail-swing capability (0.8V from rails into 2kΩ), input common-mode range extending 0.5V below V−, output short-circuit protection, and verified performance in NTSC video and high-fidelity buffering applications.
Technical Context
The LMH6657MGX/NOPB uses a voltage-feedback architecture with a 140MHz gain-bandwidth product and low input-referred voltage noise (11nV/√Hz at 100kHz). Its input stage supports common-mode voltages down to 0.5V below V− and up to 1.7V from V+, enabling direct interfacing with ground-referenced sensors and low-voltage logic.
Output stage design incorporates high-speed clamps enabling 18ns overload recovery and eliminating phase reversal under CMVR exceedance. It delivers ±80/−90mA output current while maintaining 37ns 0.1% settling time (5V supply, RL = 500Ω) and −55.5dBc THD at 5MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 270MHz at AV = +1 - enables full-spectrum video signal amplification without attenuation. |
| Slew Rate | 700V/µs at ±5V - supports fast large-signal transitions (e.g., 3VPP in <5ns) without slewing distortion. |
| Differential Gain / Phase | 0.03% / 0.10° at NTSC - meets broadcast-grade video fidelity requirements for CD/DVD and set-top boxes. |
| Supply Voltage Range | 3V to 12V - compatible with both single-supply portable systems (3.3V/5V) and industrial ±5V rails. |
| Input Common-Mode Range | Extends 0.5V below V− and 1.7V from V+ - allows direct amplification of ground-referenced signals without level-shifting. |
| Output Short-Circuit Protection | Momentary protection per Note 11 - safeguards against transient faults without latch-up or damage. |
| Settling Time (0.1%) | 37ns into 500Ω - ensures accurate sampling in high-speed ADC buffer applications with minimal acquisition error. |
Pinout & Package
LMH6657MGX/NOPB is packaged in SC70-5 (SOT-353), a 1.25mm × 1.65mm surface-mount package rated for −40°C to +85°C operation. Thermal resistance θJA is 478°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-swing output (0.8V from rails into 2kΩ); internally clamped for fast overload recovery. |
| 2 (IN−) | Inverting input | High-impedance node; accepts differential input signals; supports wide common-mode range. |
| 3 (IN+) | Non-inverting input | High-impedance node; enables unity-gain follower and non-inverting configurations. |
| 4 (GND/V−) | Negative supply / ground reference | Functions as V− in split-supply mode or system ground in single-supply; input extends 0.5V below this pin. |
| 5 (V+) | Positive supply | Accepts 3V–12V; output swing limited to ~0.8V below this rail under load. |
Key Features
| Feature | Design Value |
|---|---|
| No output phase reversal | Immune to CMVR exceedance - eliminates catastrophic failure in servo loops and closed-loop control systems. |
| Rail-swing output stage | Swings within 0.8V of either supply rail into 2kΩ - maximizes dynamic range in low-voltage systems. |
| Low distortion at video frequencies | 0.03% DG / 0.10° DP at NTSC - satisfies broadcast video timing and fidelity standards without external compensation. |
| Fast overload recovery | 18ns recovery from output overdrive - maintains signal integrity during transient transients in communication and test equipment. |
| Single-supply operability | Input extends 0.5V below V− - enables direct interface with 0V-referenced sensors and DAC outputs without biasing networks. |
Applications
| ADC buffer amp | CD/DVD ROM |
|---|---|
Use Scenario: Buffering analog sensor or DAC output before high-speed ADC sampling. IC Role / Device Role / Timing Role: High-fidelity voltage follower with 37ns settling and low THD to preserve SNR in 10+ bit converters. Use Value: Prevents sampling aperture error and harmonic distortion by delivering full-scale step response within 0.1% accuracy. | Use Scenario: Amplifying RF pickup signals from optical pickup head in CD/DVD drive electronics. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth post-amplifier for analog read channel with NTSC-compatible linearity. Use Value: Maintains 0.03% differential gain across video bandwidth, ensuring color fidelity and reduced chroma crosstalk. |
| Portable video | Current sense buffer |
Use Scenario: Driving composite video output in handheld media players or digital camcorders. IC Role / Device Role / Timing Role: Video line driver with rail-swing output and fast settling for 480i/576i resolution signals. Use Value: Delivers 270MHz bandwidth and 0.10° DP to prevent hue shift and luminance delay in real-time display paths. | Use Scenario: Isolating and scaling shunt voltage in battery management or motor control current sensing. IC Role / Device Role / Timing Role: Precision, low-offset amplifier with extended input CMR for bidirectional sensing near ground. Use Value: Enables accurate sub-mV sensing with no level-shift circuitry, reducing BOM count and layout area. |
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 bandwidth (130MHz), lower supply current (2.3mA), no short-circuit protection. | Better suited for low-power portable audio; insufficient for NTSC video fidelity. | Select when power budget <3mA is critical and video DG/DP specs are relaxed. |
| THS3201DR | Higher slew rate (4700V/µs), higher supply current (12.5mA), no input CMR extension below V−. | Optimized for RF/IF signal chains; lacks ground-sensing capability for current sense. | Select for ultra-fast pulse amplification where input cannot go below V− and rail-swing is secondary. |
Compared with LMH6657MGX/NOPB, LMH6642MF/NOPB trades bandwidth and protection for power efficiency, while THS3201DR sacrifices input flexibility and robustness for extreme slew performance - making LMH6657MGX/NOPB the balanced choice for video, ADC buffering, and ground-referenced sensing.
Availability
LMH6657MGX/NOPB is available at Aetrix Electronics and suitable for portable video, ADC buffer amp, and current sense buffer applications requiring stable component supply, long-term production continuity, and guaranteed TI original packaging.
Supply support for LMH6657MGX/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, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The LMH6657MGX/NOPB belongs to TI's high-speed voltage-feedback op-amp family, designed specifically for video signal conditioning, precision buffering, and ground-referenced analog front-ends in cost-sensitive, high-volume systems.
FAQ
What is the maximum operating temperature range for LMH6657MGX/NOPB?
The LMH6657MGX/NOPB is specified for operation from −40°C to +85°C ambient temperature. This range is validated across all electrical characteristics in the official TI datasheet (SNOSA35E), including bandwidth, slew rate, and distortion performance. The device's thermal resistance (θJA = 478°C/W in SC70-5) requires attention to PCB copper area and airflow in high-temperature environments to maintain junction temperature below 150°C.
Does LMH6657MGX/NOPB support rail-to-rail input or output?
LMH6657MGX/NOPB does not provide rail-to-rail input or output. Its input common-mode range extends 0.5V below V− and 1.7V from V+, and its output swings to within 0.8V of either rail into 2kΩ. This "near-rail" behavior avoids the power consumption and recovery penalties of true rail-to-rail designs while retaining robustness and speed - confirmed in TI's Application Section on Output Characteristics and Figure 1's connection diagram.
Can LMH6657MGX/NOPB be used with a 3.3V single supply?
Yes, LMH6657MGX/NOPB is fully characterized for 3V to 12V supply operation, including 3.3V single supply. At 3.3V, it maintains 220MHz −3dB bandwidth (AV = +1), 37ns settling time, and 0.8V rail margin - verified in the 5V Electrical Characteristics table (which applies down to 3V per Operating Ratings). Input CMR extends to −0.5V, enabling direct interface with 0V-referenced sources.
Is LMH6657MGX/NOPB pin-compatible with other SC70-5 op-amps like OPA355 or TLV2460?
No, LMH6657MGX/NOPB is not pin-compatible with OPA355 or TLV2460. While all use SC70-5, LMH6657MGX/NOPB pinout is OUT–IN−–IN+–V−–V+, whereas OPA355 is OUT–IN−–IN+–V+–GND and TLV2460 is OUT–IN−–IN+–V+–GND. Substitution requires PCB redesign. TI explicitly states "Refer to the Ordering Information section for packaging options available for each device," confirming unique pin mapping per part number.
What is the typical supply current for LMH6657MGX/NOPB at 5V?
The typical supply current for LMH6657MGX/NOPB is 6.2mA per channel at VS = 5V, TA = 25°C, with no load - directly specified in the "FEATURES" section and confirmed in the 5V Electrical Characteristics table under "IS Supply Current (per channel)" (Typ = 6.2mA). This value remains stable across input common-mode voltage and output load conditions per TI's IS vs. VCM plots on page 13.
LMH6657MGX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- SC-70-5
LMH6657MGX/NOPB FAQ
1.How can I place an order for LMH6657MGX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6657MGX/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 LMH6657MGX/NOPB reliable?
The price and inventory of LMH6657MGX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6657MGX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6657MGX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6657MGX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6657MGX/NOPB?
LMH6657MGX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6657MGX/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 LMH6657MGX/NOPB?
For technical support, including LMH6657MGX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6657MGX/NOPB requirements.
6.How does Aetrix verify that LMH6657MGX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6657MGX/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 LMH6657MGX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6657MGX/NOPB?
All LMH6657MGX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6657MGX/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 LMH6657MGX/NOPB part is unused and in its original packaging.
Return procedure for LMH6657MGX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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