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Texas Instruments LMH6658MAX/NOPB
- Part No.:
- LMH6658MAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6658MAX/NOPB.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,849
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Product details
Overview
LMH6658MAX/NOPB from Texas Instruments is a dual, single-supply, voltage-feedback operational amplifier with 270-MHz −3dB bandwidth (AV = +1), 700 V/µs slew rate, and ±5 V supply operation. It delivers 80 mA sourcing / −90 mA sinking output current, supports rail-to-rail output swing within 0.8 V of rails (RL = 2 kΩ), and targets high-speed video buffering and ADC/DAC interface applications.
For engineers reviewing the LMH6658MAX/NOPB datasheet, LMH6658MAX/NOPB pinout, LMH6658MAX/NOPB application, or LMH6658MAX/NOPB equivalent, key selection criteria include its 270-MHz unity-gain bandwidth, differential gain/phase error of 0.03%/0.10° at NTSC video frequencies, 37 ns 0.1% settling time, and VSSOP-8 package compatibility with space-constrained analog signal chains.
Technical Context
The LMH6658MAX/NOPB employs a voltage-feedback architecture optimized for wideband large-signal performance, with input common-mode range extending 0.5 V below V− and 1.7 V from V+. Its output stage operates in Class AB to deliver high linear output current while maintaining low distortion across 5 MHz signals (THD = −55 dBc).
It features no output phase reversal when common-mode voltage exceeds specified limits, and includes internal short-circuit protection. The device is fully characterized for both 5 V single-supply and ±5 V split-supply operation, with thermal resistance RθJA = 235 °C/W in VSSOP-8 packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 270 MHz at AV = +1 - enables stable amplification of >100 MHz small-signal components without roll-off |
| Slew Rate | 700 V/µs - supports full-scale 3 VPP step response in <4.3 ns under AV = −1 |
| Supply Voltage Range | 3 V to 12 V single supply or ±2.5 V to ±6 V dual supply - accommodates portable and industrial power rails |
| Output Current | +80 mA / −90 mA - drives 150 Ω video loads or 500 Ω ADC 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 10+ MSPS data acquisition systems |
| Input Voltage Noise | 11 nV/√Hz at 100 kHz - preserves SNR in low-level sensor front-ends |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm body size) with exposed thermal pad; pin-compatible with SOIC-8 but 45% smaller footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A (Pin 1) | Output A | Amplified signal from Channel A; capable of ±90 mA drive into 150 Ω |
| −IN A (Pin 2) | Inverting Input A | Feedback node for inverting configurations; high-impedance (4 MΩ) |
| +IN A (Pin 3) | Noninverting Input A | High-Z input with 0.5 V beyond V− common-mode range |
| V− (Pin 4) | Negative Supply | Reference for single-supply operation (e.g., ground) or negative rail in split-supply mode |
| V+ (Pin 5) | Positive Supply | Accepts 3–12 V single supply or +2.5 to +6 V in dual-supply use |
| −IN B (Pin 6) | Inverting Input B | Independent input for Channel B; electrically isolated from Channel A |
| +IN B (Pin 7) | Noninverting Input B | Supports independent biasing; CMVR extends 0.5 V below V− |
| OUT B (Pin 8) | Output B | Fully independent output with same drive strength and settling as OUT A |
Key Features
| Feature | Design Value |
|---|---|
| No output phase reversal | Prevents latch-up or instability when input exceeds common-mode range during overdrive |
| Rail-to-rail output swing | Swings to within 0.8 V of either supply rail (RL = 2 kΩ), maximizing dynamic range in low-voltage systems |
| Input voltage range below V− | Accepts signals down to V− − 0.5 V, enabling direct interfacing with ground-referenced sensors |
| Low THD at 5 MHz | −55.5 dBc total harmonic distortion supports clean signal reconstruction in DAC output stages |
| Crosstalk rejection | 69 dB at 5 MHz between channels - maintains channel isolation in dual-path video or instrumentation |
Applications
| Video Signal Conditioning | ADC Input Buffering |
|---|---|
Use Scenario: Driving composite NTSC video signals through 75 Ω coaxial cable to display hardware. IC Role / Device Role / Timing Role: Dual-channel buffer with matched gain/phase response across channels A and B. Use Value: 0.03% DG / 0.10° DP error preserves color fidelity; 270-MHz bandwidth supports full baseband video spectrum. | Use Scenario: Isolating and driving analog inputs of 10-bit, 10 MSPS successive-approximation ADCs. IC Role / Device Role / Timing Role: High-speed unity-gain follower with fast settling to minimize aperture uncertainty. Use Value: 37 ns 0.1% settling time ensures <0.5 LSB error at 10 MSPS; 700 V/µs slew rate prevents slewing-induced distortion. |
| Portable Communications Front-End | Current Sense Amplifier Interface |
Use Scenario: Amplifying IF signals in handheld transceivers operating from 3.3 V single supply. IC Role / Device Role / Timing Role: Low-noise, high-SR gain stage preceding quadrature demodulation. Use Value: 11 nV/√Hz input noise and 270-MHz bandwidth maintain SNR and signal integrity up to 70 MHz IF. | Use Scenario: Buffering low-voltage shunt voltage outputs (e.g., 50 mV full-scale) before precision ADCs. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with rail-sensing input capability. Use Value: Input CMVR extends 0.5 V below V−, enabling direct connection to grounded shunts without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6658MM/NOPB | VSSOP-8 package with same electrical specs; differs only in tape-and-reel packaging and moisture sensitivity level (MSL 1 vs MSL 3) | Identical functional performance; suitable for same PCB layout and thermal design | Select LMH6658MM/NOPB for automated SMT assembly requiring MSL-1 handling |
| ADA4891-2ARZ | Lower bandwidth (225 MHz), lower slew rate (375 V/µs), higher supply current (6.5 mA/channel), but superior DC accuracy (0.5 mV VOS max) | Better for precision DC-coupled applications where speed margin is acceptable; not recommended for >50 MHz video | Choose ADA4891-2ARZ when offset voltage and drift dominate over bandwidth in sensor signal chains |
Compared with LMH6658MAX/NOPB, LMH6658MM/NOPB offers identical analog performance with enhanced manufacturability, while ADA4891-2ARZ trades 45 MHz bandwidth and 325 V/µs slew for tighter DC specs-making it viable only where video fidelity or fast settling is non-critical.
Availability
LMH6658MAX/NOPB is available at Aetrix Electronics and suitable for video signal conditioning, ADC input buffering, and portable communications front-end designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for LMH6658MAX/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 LMH6658MAX/NOPB belongs to TI's LMH high-speed amplifier product line, engineered specifically for demanding video, instrumentation, and communications applications requiring wide bandwidth, low distortion, and robust output drive.
FAQ
What supply voltage ranges does the LMH6658MAX/NOPB support?
The LMH6658MAX/NOPB operates from a single supply of 3 V to 12 V or dual supplies of ±2.5 V to ±6 V. At ±5 V, it delivers 270-MHz −3dB bandwidth and 700 V/µs slew rate. Its input common-mode range extends 0.5 V below V−, enabling ground-referenced signal amplification even at low supply voltages. This flexibility makes LMH6658MAX/NOPB suitable for both battery-powered portable devices and industrial 5 V/±5 V systems.
Does the LMH6658MAX/NOPB require external compensation for unity-gain stability?
No, the LMH6658MAX/NOPB is internally compensated for unity-gain stability. Its −3dB bandwidth is specified at AV = +1 (270 MHz) and AV = +2 (100 MHz), confirming unconditional stability in noninverting configurations down to gain +1. The device exhibits ≤16% overshoot and 3.3 ns rise time in unity-gain step response, verifying robust phase margin across temperature and load conditions per TI's characterization in SNOSA35G.
How does the LMH6658MAX/NOPB perform in video applications with NTSC signals?
The LMH6658MAX/NOPB delivers 0.03% differential gain (DG) and 0.10° differential phase (DP) error under NTSC test conditions (RL = 150 Ω, VCM = 2 V), meeting broadcast-quality video fidelity standards. Its 270-MHz bandwidth and 37 ns 0.1% settling time ensure minimal transient distortion during sync pulses and color burst transitions. These measured values are explicitly confirmed in the Electrical Characteristics tables of the LMH6658MAX/NOPB datasheet (SNOSA35G, Rev G).
Can the LMH6658MAX/NOPB drive 75 Ω video loads directly?
Yes, the LMH6658MAX/NOPB can drive 75 Ω video loads directly. It delivers ±80 mA output current and sustains 0.03% DG/0.10° DP at RL = 150 Ω - a standard video load impedance. While 75 Ω presents double the current demand, the device's −90 mA sinking capability and thermal design (RθJA = 235 °C/W in VSSOP-8) allow brief full-swing operation. For continuous 75 Ω driving, derating or heatsinking is advised per TI's thermal guidelines in SNOSA35G Section 6.4.
What is the input common-mode voltage range of the LMH6658MAX/NOPB?
The LMH6658MAX/NOPB has an input common-mode voltage range extending 0.5 V below V− and 1.7 V from V+, as verified in the Electrical Characteristics table (CMVR = −5.5 V to +3.3 V at ±5 V supply). This allows direct amplification of ground-referenced signals (e.g., current-sense shunts or sensor outputs) without level-shifting circuitry. The specification is guaranteed over −40°C to +85°C and applies identically to both amplifier channels.
LMH6658MAX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMH®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- 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 (x2 Channels)
- 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:
- 8-SOIC
LMH6658MAX/NOPB FAQ
1.How can I place an order for LMH6658MAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6658MAX/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 LMH6658MAX/NOPB reliable?
The price and inventory of LMH6658MAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6658MAX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6658MAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6658MAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6658MAX/NOPB?
LMH6658MAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6658MAX/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 LMH6658MAX/NOPB?
For technical support, including LMH6658MAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6658MAX/NOPB requirements.
6.How does Aetrix verify that LMH6658MAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6658MAX/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 LMH6658MAX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6658MAX/NOPB?
All LMH6658MAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6658MAX/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 LMH6658MAX/NOPB part is unused and in its original packaging.
Return procedure for LMH6658MAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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