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Texas Instruments LMH6702MA/NOPB
- Part No.:
- LMH6702MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6702MA/NOPB.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,540
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Product details
Overview
LMH6702MA/NOPB from Texas Instruments is a 1.7-GHz current-feedback operational amplifier optimized for ultra-low harmonic distortion in high-fidelity signal paths, delivering −100 dBc HD2 and −96 dBc HD3 at 5 MHz (SOT-23), 3100 V/µs slew rate, and 1.83 nV/√Hz input voltage noise - deployed as a flash ADC driver in radar receivers and high-resolution video systems.
For engineers reviewing the LMH6702MA/NOPB datasheet, LMH6702MA/NOPB pinout, LMH6702MA/NOPB application, or LMH6702MA/NOPB equivalent, key selection criteria include its current-feedback architecture enabling gain-independent bandwidth, SOT-23 vs SOIC package distortion trade-offs, 100 Ω load drive capability, and compatibility with ±4 V to ±6 V supplies in wideband IF amplifier designs.
Technical Context
The LMH6702MA/NOPB employs a current-feedback topology where loop gain and bandwidth are set primarily by the external feedback resistor (optimized at 237 Ω), not closed-loop gain - enabling stable 1.7 GHz small-signal bandwidth at AV = 2 and retaining >140 MHz bandwidth even at AV = +10. Its VIP10™ complementary bipolar process delivers low input bias current asymmetry (IBN = −15 µA, IBI = ±30 µA) and high output current (80 mA).
Harmonic distortion performance is highly sensitive to PCB layout: supply decoupling capacitor grounding must be isolated from analog input ground returns to minimize coupling-induced HD2 degradation, and package choice directly impacts distortion - SOT-23 yields up to 13 dB improvement in HD2 over SOIC at 20 MHz due to shorter bond wires and lower parasitic coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3-dB Bandwidth | 1.7 GHz at AV = 2, VOUT = 0.5 VPP - supports full-power operation through UHF band without gain peaking. |
| Slew Rate | 3100 V/µs - enables clean 6-V step response with 1.7 ns fall time into 100 Ω, critical for fast-settling ADC interfaces. |
| 2nd Harmonic Distortion | −100 dBc at 5 MHz, RL = 100 Ω (SOT-23) - ensures <0.001% THD+N in 10-bit+ data acquisition front ends. |
| Input Voltage Noise | 1.83 nV/√Hz above 1 MHz - preserves SNR in wideband IF amplifiers where noise dominates system floor. |
| Supply Current | 12.5 mA typical at ±5 V - balances ultra-high speed with moderate power in thermally constrained layouts. |
| Output Current | 80 mA - drives heavy resistive loads (e.g., 150 Ω video lines) or capacitive ADC inputs via series termination. |
| Settling Time | 13.4 ns to 0.1% for 2-V step - meets timing budgets for ≥75 MSPS sampling systems with minimal aperture uncertainty. |
Pinout & Package
LMH6702MA/NOPB is packaged in an 8-pin SOIC (D package) with 4.90 mm × 3.91 mm body size. Pin 1, 5, and 8 are no-connect (NC); functional terminals are fully compatible with industry-standard SOIC-8 footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | Accepts +4 V to +6 V; requires local 6.8 µF + 0.1 µF decoupling to minimize supply-induced HD2. |
| −IN | Inverting input | Current-summing node in CFB architecture; sets feedback path impedance and stability via RF = 237 Ω. |
| +IN | Non-inverting input | High-impedance voltage node (1.4 MΩ || 1.6 pF); must be guarded and routed away from noisy supply traces. |
| V− | Negative supply input | Accepts −4 V to −6 V; decoupling identical to V+; shared ground return degrades HD2 performance. |
| OUT | Amplifier output | Capable of ±3.5 V swing into 100 Ω; requires series resistor (RS) when driving capacitive ADC inputs to suppress ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Enables 1.7 GHz bandwidth independent of closed-loop gain - eliminates gain-bandwidth trade-off in voltage-feedback op amps. |
| Ultra-low distortion package optimization | SOT-23 variant achieves −100 dBc HD2 at 5 MHz; SOIC variant trades 13 dB distortion for higher power handling and thermal margin. |
| High-output-current drive | 80 mA continuous output sustains 2-VPP signals into 100 Ω loads while maintaining <0.1% settling accuracy within 13.4 ns. |
| Low-noise wideband design | 1.83 nV/√Hz input voltage noise + 3.0 pA/√Hz non-inverting current noise enables >70 dB SFDR in 75 MHz IF stages. |
| Robust capacitive-load compensation | Stable with RS-series termination into ADC input capacitance; layout-sensitive but predictable via CL vs RS settling curves. |
Applications
| Flash A-D Driver | Wide Dynamic Range IF Amp |
|---|---|
Use Scenario: Driving the input of a 10-bit, 100-MSPS flash ADC in a software-defined radio front end. IC Role / Device Role / Timing Role: Wideband buffer providing DC-coupled, low-distortion signal conditioning with sub-ns edge fidelity and minimal aperture jitter contribution. Use Value: −64 dBc HD3 at 60 MHz (SOIC) ensures converter-limited rather than amplifier-limited ENOB, preserving effective resolution across Nyquist band. |
Use Scenario: Amplifying 30–150 MHz IF signals in military radar receivers requiring >70 dB spurious-free dynamic range. IC Role / Device Role / Timing Role: High-linearity gain stage placed post-mixer to boost weak signals before digitization without adding intermodulation artifacts. Use Value: −67 dBc two-tone IMD at 75 MHz enables detection of low-RCS targets amid strong clutter without false alarms from distortion products. |
| Radar and Communication Receivers | High Resolution Video |
Use Scenario: Baseband or IF amplification in phased-array radar transceivers operating up to X-band with pulse compression requirements. IC Role / Device Role / Timing Role: Low-phase-noise, low-group-delay-variation amplifier ensuring coherent signal summation across hundreds of channels. Use Value: 0.09° linear phase deviation from DC to 100 MHz minimizes pulse distortion and preserves time-of-flight measurement accuracy. |
Use Scenario: RGB line driver in 4K/60 Hz broadcast monitors requiring SMPTE 424M compliance and <0.02% differential gain error. IC Role / Device Role / Timing Role: High-slew, low-distortion buffer isolating FPGA video DAC outputs from 75 Ω coaxial cable loads. Use Value: 0.021% DG and 0.007° DP at 4.43 MHz (PAL) meet ITU-R BT.601 color fidelity standards without external calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6703MA/NOPB | Higher supply current (15.5 mA), improved HD2 (−103 dBc @ 5 MHz), same SOIC-8 package and pinout. | Better suited for ultra-low-distortion lab instrumentation where power efficiency is secondary to spectral purity. | Select LMH6703MA/NOPB when HD2 below −100 dBc is mandatory and thermal headroom allows +3 mA extra quiescent draw. |
| THS3201DGN | Wider bandwidth (1.8 GHz), higher slew rate (5700 V/µs), but higher noise (2.1 nV/√Hz) and no SOT-23 option. | Preferred for optical receiver TIA post-amplification where speed dominates noise budget, but less optimal for ADC driving. | Choose THS3201DGN only when >1.7 GHz bandwidth is required and distortion below −95 dBc is acceptable at 20+ MHz. |
Compared with LMH6702MA/NOPB, LMH6703MA/NOPB offers measurable HD2 improvement at modest power cost, while THS3201DGN trades noise and distortion for raw speed - making LMH6702MA/NOPB the balanced choice for ADC drivers demanding both fidelity and efficiency.
Availability
LMH6702MA/NOPB is available at Aetrix Electronics and suitable for radar receivers, high-resolution video systems, and flash A-D converter interfaces requiring stable component supply with guaranteed long-term manufacturability and TI's full product lifecycle support.
Supply support for LMH6702MA/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-speed op amp design and manufacturing.
The LMH6702MA/NOPB belongs to TI's LMH ultra-wideband amplifier family, engineered specifically for applications demanding simultaneous high speed, low distortion, and DC coupling - including test equipment, defense electronics, and professional video infrastructure.
FAQ
What is the recommended feedback resistor value for LMH6702MA/NOPB?
The LMH6702MA/NOPB is optimized for a 237-Ω feedback resistor in both inverting and non-inverting configurations. Using this value ensures stable 1.7-GHz bandwidth and minimal pulse response ringing. Lower values cause excessive overshoot; higher values reduce bandwidth and degrade distortion performance, especially above 50 MHz.
Does LMH6702MA/NOPB support single-supply operation?
No, LMH6702MA/NOPB is specified only for dual-supply operation from ±4 V to ±6 V. It lacks rail-to-rail input/output capability and requires symmetric supplies to maintain DC common-mode integrity and avoid clipping in AC-coupled or DC-coupled wideband applications.
How does package type affect harmonic distortion in LMH6702MA/NOPB?
Package significantly impacts distortion: the SOT-23 version achieves −100 dBc HD2 at 5 MHz, while the SOIC version measures −87 dBc under identical conditions. This 13-dB difference stems from shorter internal bond wires in SOT-23 reducing supply-to-input coupling - critical for systems targeting <−90 dBc spurious levels.
Can LMH6702MA/NOPB drive a 150-Ω video load directly?
Yes, LMH6702MA/NOPB delivers 0.021% differential gain and 0.007° differential phase at 4.43 MHz into 150 Ω, meeting SMPTE 424M and ITU-R BT.601 broadcast video standards. For 75 Ω systems, a simple 75 Ω series termination maintains impedance match and preserves signal integrity.
What layout practices minimize HD2 degradation in LMH6702MA/NOPB circuits?
To minimize HD2, separate the ground returns of supply decoupling capacitors (CPOS/CNEG) from analog input ground nodes (RG, RT, RIN). Use split ground planes or star grounding - mixing these paths increases supply-transient coupling into the input stage and can raise HD2 by >10 dB between 10–20 MHz.
LMH6702MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 3100V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.7 GHz
- Current - Input Bias:
- 6 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 12.5mA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMH6702MA/NOPB FAQ
1.How can I place an order for LMH6702MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6702MA/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 LMH6702MA/NOPB reliable?
The price and inventory of LMH6702MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6702MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6702MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6702MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6702MA/NOPB?
LMH6702MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6702MA/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 LMH6702MA/NOPB?
For technical support, including LMH6702MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6702MA/NOPB requirements.
6.How does Aetrix verify that LMH6702MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6702MA/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 LMH6702MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6702MA/NOPB?
All LMH6702MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6702MA/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 LMH6702MA/NOPB part is unused and in its original packaging.
Return procedure for LMH6702MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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