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Texas Instruments LMH6702 MDC
- Part No.:
- LMH6702 MDC
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- Die
- Datasheet:
-
LMH6702 MDC.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT DIESALE
- Quantity:
- Payment:
- Shipping:
Inventory:3,403
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Product details
Overview
LMH6702 MDC from Texas Instruments is a 1.7-GHz current-feedback operational amplifier optimized for ultra-low harmonic distortion in high-speed signal conditioning paths. It delivers −100 dBc HD2 and −96 dBc HD3 at 5 MHz (SOT-23), 3100 V/µs slew rate, 13.4 ns settling to 0.1%, and 1.83 nV/√Hz input voltage noise - enabling precision drive of flash ADCs and wide-dynamic-range IF stages in radar and communications receivers.
For engineers reviewing the LMH6702 MDC datasheet, LMH6702 MDC pinout, LMH6702 MDC application, or LMH6702 MDC equivalent, key selection criteria include its current-feedback architecture's gain-bandwidth independence, SOT-23 vs SOIC package distortion trade-offs, supply decoupling layout sensitivity, and compatibility with 237-Ω feedback networks for optimal pulse fidelity and IMD suppression.
Technical Context
The LMH6702 MDC employs a current-feedback topology where bandwidth and stability are set primarily by the external feedback resistor (optimized at 237 Ω), not closed-loop gain - enabling 1.7 GHz −3-dB bandwidth at AV = 2 and 140 MHz at AV = +10. Its VIP10™ complementary bipolar process delivers low input bias current mismatch and high slew rate without external compensation.
Harmonic distortion performance is highly dependent on package (SOT-23 shows −100/−96 dBc HD2/HD3 at 5 MHz vs −87/−98 dBc for SOIC) and PCB layout: split ground planes for supply decoupling caps (CPOS/CNEG) versus analog input return paths are required to minimize supply-induced coupling into the inverting input node.
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-VPP step response with <1.7 ns fall time and zero overshoot. |
| HD2 / HD3 (5 MHz) | −100 dBc / −96 dBc (SOT-23) - meets 10-bit SFDR requirements up to 60 MHz for ADC driver applications. |
| Input Voltage Noise | 1.83 nV/√Hz above 1 MHz - limits thermal noise floor in wideband receiver front ends. |
| Settling Time | 13.4 ns to 0.1% - ensures accurate sampling window alignment for >75 MSPS ADCs. |
| Supply Current | 12.5 mA at ±5 V - balances speed and power in high-channel-count instrumentation systems. |
| Output Current | 80 mA - drives 100-Ω loads directly, eliminating need for external buffers in video line drivers. |
Pinout & Package
LMH6702 MDC is available in SOT-23 (5-pin) and SOIC (8-pin) packages. The SOT-23 variant offers superior harmonic distortion due to shorter internal bond wires and reduced supply-to-input coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | Accepts +4 V to +6 V (dual-supply ±4 to ±6 V); requires local 6.8-µF + 0.01-µF ceramic decoupling. |
| V− | Negative supply input | Accepts −4 V to −6 V; decoupling must use separate ground return from analog input nodes. |
| +IN | Non-inverting input | High-impedance node (1.4 MΩ, 1.6 pF); bias current −6 µA typical - requires impedance matching only if DC accuracy critical. |
| −IN | Inverting input | Low-impedance current-summing node; primary feedback path for current-feedback operation. |
| OUT | Amplifier output | Capable of ±3.5 V swing into 100 Ω; requires series resistor (RS) when driving capacitive ADC inputs to suppress ringing. |
| N/C | No internal connection | Pins 1, 5, 8 (SOIC) and pin 5 (SOT-23) are unconnected - must be left floating or tied to ground per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Enables stable unity-gain operation with 1.7-GHz bandwidth and minimal gain-dependent bandwidth roll-off. |
| Ultra-low distortion (SOT-23) | −100 dBc HD2 and −96 dBc HD3 at 5 MHz - exceeds CLC409/CLC449 performance for 10+ bit data acquisition. |
| Fast settling & slew rate | 13.4 ns to 0.1% and 3100 V/µs - supports accurate sampling of multi-cycle transients in radar pulse processing. |
| Low input voltage noise | 1.83 nV/√Hz - preserves SNR in wide-dynamic-range IF amplifiers operating from baseband to 150 MHz. |
| Robust capacitive load drive | Stable with >100 pF output capacitance when using recommended RS network - simplifies ADC interface design. |
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: High-fidelity buffer providing low-noise, low-distortion signal conditioning with sub-14 ns settling to meet aperture uncertainty requirements. Use Value: Enables >68 dB SNR and >72 dB SFDR at 60 MHz input frequency by suppressing amplifier-induced harmonics below converter quantization noise floor. |
Use Scenario: Intermediate-frequency amplification in a 75-MHz L-band radar receiver chain. IC Role / Device Role / Timing Role: Wideband gain block delivering flat group delay and linear phase response (<0.09° deviation to 100 MHz). Use Value: Maintains pulse integrity and minimizes range sidelobes via −67 dBc OIM3 at 75 MHz, supporting high-resolution target discrimination. |
| Radar Pulse Amplifier | High Resolution Video Line Driver |
Use Scenario: Transmit pulse shaping and amplification in a pulsed Doppler weather radar system. IC Role / Device Role / Timing Role: Fast-settling driver delivering 6-VPP pulses with <1.7 ns fall time and zero overshoot into 50-Ω coaxial loads. Use Value: Preserves leading-edge fidelity and eliminates pulse smearing, enabling accurate velocity measurement down to <0.1 m/s. |
Use Scenario: RGB video signal distribution across 150-Ω transmission lines in broadcast-grade camera systems. IC Role / Device Role / Timing Role: DC-coupled line driver with 0.024% differential gain and 0.004° differential phase error at 3.58 MHz. Use Value: Eliminates color bleeding and hue shift in NTSC signals, meeting SMPTE RP 168 compliance for professional video infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6703 MDC | Single-channel, same VIP10 process but higher supply current (15 mA) and improved HD2 (−103 dBc @ 5 MHz, SOT-23). | Better suited for ultra-low-noise IF chains where 3 dB lower HD2 justifies +2.5 mA quiescent penalty. | Select LMH6703 MDC when SFDR > 75 dB is required beyond 20 MHz; LMH6702 MDC remains optimal for cost-sensitive, power-constrained ADC drivers. |
| THS3201DGN | Current-feedback op amp with 1.8-GHz bandwidth but higher input noise (2.1 nV/√Hz) and lower output current (60 mA). | Limited drive capability into 100-Ω loads; requires external buffer for video line driving. | Choose THS3201DGN only when legacy board space mandates MSOP-8 footprint; LMH6702 MDC provides superior distortion/noise trade-off in SOT-23/SOIC. |
Compared with LMH6703 MDC, the LMH6702 MDC trades 3 dB HD2 improvement for 20% lower supply current and identical 1.7-GHz bandwidth - making it more suitable for multi-channel, thermally constrained systems. Versus THS3201DGN, LMH6702 MDC delivers 0.27 nV/√Hz lower noise and 20 mA higher output drive, directly enabling single-stage 150-Ω video line termination.
Availability
LMH6702 MDC is available at Aetrix Electronics and suitable for flash ADC driver, wideband IF amplifier, radar pulse conditioning, high-resolution video line driving, and communication receiver front-end applications requiring stable component supply across military, aerospace, and industrial production cycles.
Supply support for LMH6702 MDC 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-speed amplifiers, data converters, and precision signal chain solutions.
The LMH6702 MDC belongs to TI's ultra-wideband current-feedback op amp product line, engineered specifically for demanding RF, test equipment, and defense applications where distortion, noise, and settling performance define system-level dynamic range.
FAQ
What is the recommended feedback resistor value for LMH6702 MDC?
The LMH6702 MDC is optimized for a 237-Ω feedback resistor in both inverting and non-inverting configurations. Using values significantly lower than 237 Ω causes excessive ringing in the step response, while higher values reduce bandwidth and degrade distortion performance. This resistor sets loop gain in the current-feedback architecture and must be placed close to the −IN pin with short, low-inductance traces.
Does LMH6702 MDC require external compensation?
No, the LMH6702 MDC is unity-gain stable and does not require external compensation components. Its current-feedback architecture inherently provides stable operation across gains from −1 to +10 when used with the recommended 237-Ω feedback resistor and proper PCB layout - including split ground planes for supply decoupling and minimized parasitic capacitance at the −IN node.
How does package choice affect harmonic distortion in LMH6702 MDC?
The SOT-23 package delivers −100 dBc HD2 and −96 dBc HD3 at 5 MHz, outperforming the SOIC version (−87 dBc HD2, −98 dBc HD3) due to shorter internal bond wires that reduce supply-to-input coupling. For applications demanding best-in-class distortion - such as 10+ bit ADC drivers - the SOT-23 variant of LMH6702 MDC is strongly preferred despite identical die functionality.
Can LMH6702 MDC drive capacitive ADC inputs directly?
No - LMH6702 MDC requires a series resistor (RS) between its output and capacitive ADC inputs to prevent instability and ringing. Typical RS values range from 5 Ω to 25 Ω depending on load capacitance (CL); Figure 27 in the datasheet provides settling-time-optimized RS values for CL from 1 pF to 10 kΩ. Direct connection risks overshoot and extended settling beyond 13.4 ns specification.
What is the maximum safe supply voltage for LMH6702 MDC?
The absolute maximum supply voltage for LMH6702 MDC is ±6.75 V. Recommended operating conditions specify ±4 V to ±6 V dual supplies. Exceeding ±6.75 V risks permanent damage; operation at ±6 V is fully characterized and supported across the −40°C to +85°C temperature range. Single-supply operation is possible if input common-mode range (±1.9 V) and output swing (±3.3 V) remain within rail constraints.
LMH6702 MDC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Die
- 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:
- Diesale
LMH6702 MDC FAQ
1.How can I place an order for LMH6702 MDC through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6702 MDC 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 LMH6702 MDC reliable?
The price and inventory of LMH6702 MDC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6702 MDC is usually 5 days.
3.What payment methods are accepted for LMH6702 MDC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6702 MDC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6702 MDC?
LMH6702 MDC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6702 MDC 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 LMH6702 MDC?
For technical support, including LMH6702 MDC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6702 MDC requirements.
6.How does Aetrix verify that LMH6702 MDC is sourced from the original manufacturer or authorized distributors?
All LMH6702 MDC 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 LMH6702 MDC meets industry standards.
7.What is the process for return or replacement of LMH6702 MDC?
All LMH6702 MDC units undergo pre-shipment inspection (PSI). If there is an issue with LMH6702 MDC, 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 LMH6702 MDC part is unused and in its original packaging.
Return procedure for LMH6702 MDC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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