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Texas Instruments LMH6657MFX/NOPB
- Part No.:
- LMH6657MFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMH6657MFX/NOPB.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,261
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Product details
Overview
LMH6657MFX/NOPB from Texas Instruments is a single-channel, voltage-feedback operational amplifier optimized for high-speed, large-signal applications. It delivers 270-MHz −3dB bandwidth (AV = +1), 700 V/µs slew rate, and 140-MHz gain-bandwidth product, operating from 3-V to 12-V single supply or ±2.5-V to ±5-V dual supply. It is used in video buffering, ADC/DAC interface circuits, and portable communications where rail-to-rail output swing and low distortion are critical.
For engineers reviewing the LMH6657MFX/NOPB datasheet, LMH6657MFX/NOPB pinout, LMH6657MFX/NOPB application, or LMH6657MFX/NOPB equivalent, key selection criteria include input common-mode range extending 0.5 V below V−, differential gain/phase error of 0.03%/0.10° at NTSC frequencies, 37-ns 0.1% settling time, and SC70-5 package compatibility with space-constrained PCB layouts.
Technical Context
The LMH6657MFX/NOPB employs a voltage-feedback architecture with a fully differential input stage enabling operation with input voltages below the negative rail. Its output stage supports ±80/−90 mA drive into 100-Ω loads while maintaining 0.8-V output swing from either rail under 2-kΩ load conditions.
It features no phase reversal when input common-mode voltage exceeds specified limits, and includes internal short-circuit protection. The device is fully characterized across temperature (−40°C to +85°C) and supply ranges (3 V to 12 V single, ±2.5 V to ±5 V dual), with guaranteed performance at 5 V and ±5 V operating points.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 270 MHz at AV = +1 - enables high-fidelity signal amplification up to UHF frequencies without gain roll-off |
| Slew Rate | 700 V/µs - supports fast transient response for video pulses and wideband data signals |
| Supply Voltage Range | 3 V to 12 V single supply or ±2.5 V to ±5 V dual supply - compatible with battery-powered and industrial rails |
| Input Common-Mode Range | Extends 0.5 V below V− and 1.7 V from V+ - allows direct interfacing to ground-referenced sensors and low-voltage DACs |
| Output Current | +80/−90 mA - drives 75-Ω video lines or multiple logic inputs without external buffers |
| DG/DP Error | 0.03% / 0.10° at NTSC - meets broadcast-grade video fidelity requirements |
| Settling Time | 37 ns to 0.1% - ensures accurate sampling in high-speed ADC front-ends |
Pinout & Package
LMH6657MFX/NOPB is packaged in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for compact, high-density PCB layouts. The package is RoHS-compliant and lead-free (NOPB suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUTPUT | Amplifier output node | Delivers full-swing signal with 0.8-V headroom from rails into 2-kΩ load; capable of sourcing 80 mA/sinking 90 mA |
| 2 - V− | Negative supply terminal | Accepts ground (single-supply) or negative rail (dual-supply); input common-mode extends 0.5 V below this pin |
| 3 - +IN | Noninverting input | High-impedance (4 MΩ typical) node; supports DC-coupled sensor interfaces with rail-to-rail input capability |
| 4 - −IN | Inverting input | Matches +IN in impedance and offset; used for precision closed-loop configurations including unity-gain buffers |
| 5 - V+ | Positive supply terminal | Accepts 3–12 V (single) or +2.5–+5 V (dual); PSRR >72 dB ensures immunity to supply noise |
Key Features
| Feature | Design Value |
|---|---|
| No output phase reversal | Prevents latch-up or instability when input exceeds common-mode range - eliminates need for external clamping diodes |
| Output short-circuit protection | Enables robust operation in test fixtures or fault-prone systems without external current-limiting components |
| Low input voltage noise | 11 nV/√Hz at 100 kHz - preserves SNR in low-level signal conditioning paths such as medical sensor front-ends |
| Rail-to-rail output swing | Swings within 0.8 V of both supply rails into 2-kΩ - maximizes dynamic range in low-voltage systems |
| Fast overdrive recovery | 18 ns - restores linear operation rapidly after large transient overloads, critical for pulse-amplifier applications |
Applications
| Video Signal Conditioning | ADC Driver Interface |
|---|---|
Use Scenario: Amplifying composite NTSC video signals in portable DVD players and set-top boxes. IC Role / Device Role / Timing Role: Buffer and level-shift video output from DACs to 75-Ω coaxial transmission lines. Use Value: 0.03% DG / 0.10° DP error preserves color fidelity; 270-MHz bandwidth maintains luminance detail up to 5 MHz. | Use Scenario: Driving the analog input of 10-bit, 50-MSPS ADCs in instrumentation front-ends. IC Role / Device Role / Timing Role: Low-noise, fast-settling buffer between sensor signal chain and ADC sample-and-hold stage. Use Value: 37-ns 0.1% settling time ensures <0.5 LSB error; 11 nV/√Hz input noise avoids degrading effective resolution. |
| Current Sense Amplification | Portable Communications Baseband |
Use Scenario: Amplifying mV-level shunt voltage drops in battery management ICs for smartphones. IC Role / Device Role / Timing Role: High-precision, low-offset gain block with input referenced to system ground. Use Value: Input common-mode range extends 0.5 V below V− - enables direct sensing at ground potential without level-shifting. | Use Scenario: Baseband I/Q channel amplification in Bluetooth/WiFi transceivers with 3.3-V supply. IC Role / Device Role / Timing Role: Single-supply, high-linearity driver for RF mixer inputs and DAC outputs. Use Value: THD = −55.5 dBc at 5 MHz ensures clean spectral purity; SC70-5 footprint saves board area in miniaturized modules. |
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 −3dB BW (130 MHz), lower slew rate (400 V/µs), higher supply current (10.5 mA) | Better DC precision (lower VOS drift), less suitable for >100-MHz video or fast-settling ADC drivers | Select when DC accuracy outweighs speed; not recommended for NTSC video or >30-MSPS ADC interfaces |
| OPA695IDBVT | Higher −3dB BW (1.7 GHz), higher slew rate (4300 V/µs), wider supply range (5–12 V), no V−-below-rail input | Requires external level-shifting for ground-referenced inputs; overqualified for cost-sensitive consumer video | Choose only when >500-MHz bandwidth or sub-5-ns settling is mandatory; adds complexity and cost for LMH6657MFX/NOPB use cases |
Compared with LMH6657MFX/NOPB, LMH6642MF/NOPB trades bandwidth and speed for improved DC stability, while OPA695IDBVT delivers extreme RF performance at the expense of input flexibility and power efficiency - making LMH6657MFX/NOPB the optimal balance for portable video and medium-speed data acquisition.
Availability
LMH6657MFX/NOPB is available at Aetrix Electronics and suitable for video signal conditioning, ADC driver interfaces, and portable communications baseband applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LMH6657MFX/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 company specializing in analog and embedded processing technologies, with leadership in high-performance op-amps, data converters, and power management ICs.
The LMH6657MFX/NOPB belongs to TI's LMH high-speed amplifier family, designed specifically for video, communications, and instrumentation applications demanding wide bandwidth, low distortion, and rail-compatible operation in miniature packages.
FAQ
What is the maximum supply voltage for LMH6657MFX/NOPB?
The LMH6657MFX/NOPB supports a maximum supply voltage of 12 V for single-supply operation or ±5 V for dual-supply operation. Absolute maximum ratings specify V+ − V− ≤ 12.6 V, and input/output pins tolerate voltages from V− − 0.8 V to V+ + 0.8 V. Exceeding these limits risks permanent damage, per TI's SNOSA35G datasheet Section 6.1.
Does LMH6657MFX/NOPB support rail-to-rail input?
LMH6657MFX/NOPB does not support full 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 only up to V+ − 1.7 V. This enables ground-referenced operation in single-supply systems but requires headroom at the positive rail.
What is the typical output swing of LMH6657MFX/NOPB into a 2-kΩ load?
At 5-V supply, LMH6657MFX/NOPB delivers a typical output swing of 4.25 VPP - i.e., VOH ≈ 4.25 V and VOL ≈ 0 V - into a 2-kΩ load referenced to V+/2. Under symmetric dual-supply (±5 V), it swings ±4.19 V, achieving ±0.81 V from each rail. These values are specified in TI's SNOSA35G datasheet Table 6.5.
Is LMH6657MFX/NOPB suitable for driving 75-Ω video lines?
Yes, LMH6657MFX/NOPB is explicitly qualified for 75-Ω video line driving. It delivers ±80/−90 mA output current and maintains 0.03% differential gain / 0.10° differential phase error at NTSC frequencies, meeting broadcast video standards. TI's datasheet lists "CD/DVD ROM" and "Portable Video" as key applications, confirming its video line-driver capability.
What package type is used for LMH6657MFX/NOPB?
LMH6657MFX/NOPB uses the SC70-5 (DCK) package: a 5-pin, surface-mount, RoHS-compliant outline measuring 2.00 mm × 1.25 mm. This matches the "MFX" orderable suffix in TI's SNOSA35G datasheet Device Information table and is distinct from the SOT-23-5 (DBV) variant.
LMH6657MFX/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
LMH6657MFX/NOPB FAQ
1.How can I place an order for LMH6657MFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6657MFX/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 LMH6657MFX/NOPB reliable?
The price and inventory of LMH6657MFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6657MFX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6657MFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6657MFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6657MFX/NOPB?
LMH6657MFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6657MFX/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 LMH6657MFX/NOPB?
For technical support, including LMH6657MFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6657MFX/NOPB requirements.
6.How does Aetrix verify that LMH6657MFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6657MFX/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 LMH6657MFX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6657MFX/NOPB?
All LMH6657MFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6657MFX/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 LMH6657MFX/NOPB part is unused and in its original packaging.
Return procedure for LMH6657MFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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