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Texas Instruments LMH6703MA/NOPB
- Part No.:
- LMH6703MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6703MA/NOPB.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:194
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Product details
Overview
LMH6703MA/NOPB from Texas Instruments is a 1.2 GHz current-feedback operational amplifier optimized for ultra-high-fidelity signal conditioning in video, ADC/DAC interface, and wide-dynamic-range IF applications. It delivers −69 dBc 2nd-harmonic distortion at 20 MHz (SOT-23-6), 4500 V/µs slew rate, 2.3 nV/√Hz input voltage noise, and supports ±5 V supplies with shutdown control.
For engineers reviewing the LMH6703MA/NOPB datasheet, LMH6703MA/NOPB pinout, LMH6703MA/NOPB application, or LMH6703MA/NOPB equivalent, this page provides verified package mapping (SOIC-8), confirmed current-feedback architecture, validated harmonic distortion vs. frequency curves, and real-world design guidance for capacitive load drive and video differential gain/phase compliance.
Technical Context
The LMH6703MA/NOPB implements a current-feedback topology where closed-loop bandwidth and stability are primarily set by the external feedback resistor (RF = 390 Ω for SOIC-8), not gain-enabling stable operation from ±1 to ±10 V/V without compensation. Its 30 Ω inverting-input impedance and 1 MΩ non-inverting-input resistance define distinct input termination requirements for inverting vs. non-inverting configurations.
Shutdown functionality is TTL-compatible (VIH ≥ 2.0 V, VIL ≤ 0.8 V) with 10 ns enable/disable timing and <50 mVPP output glitch; disabled quiescent current drops to 0.9 mA while maintaining high-impedance I/O states. Differential gain (0.01%) and phase (0.02°) are specified at 4.43 MHz into 150 Ω, confirming suitability for broadcast-grade RGB and composite video systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3-dB Bandwidth | 1200 MHz at AV = +2, VOUT = 0.5 VPP - enables full-spectrum fidelity for >600 MHz baseband signals |
| Slew Rate | 4500 V/µs - supports clean 6-V step transitions in ≤1.05 ns, critical for flash ADC front-end drive |
| 2nd Harmonic Distortion | −69 dBc at 20 MHz, 2 VPP (SOT-23-6) - ensures <−60 dBc spurious content in 50-MHz IF receivers |
| Input Voltage Noise | 2.3 nV/√Hz - limits integrated noise to ~12 µV RMS over 100 MHz, preserving SNR in wideband digitization |
| Supply Current | 12.5 mA (enabled), 0.9 mA (disabled) - allows dynamic power scaling in multi-channel video or radar beamforming systems |
| Differential Gain/Phase | 0.01%/0.02° at 4.43 MHz into 150 Ω - meets SMPTE RP-168 and ITU-R BT.601 broadcast video linearity specs |
| Output Current | ±90 mA - drives 75 Ω coaxial lines or 100 Ω differential ADC inputs without external buffering |
Pinout & Package
LMH6703MA/NOPB is packaged in an 8-pin SOIC (D package) with 4.90 mm × 3.91 mm body size and standard JEDEC MS-012AC footprint. Pin 1 is top-left corner (notch/dot indicator); pins are numbered counter-clockwise.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No connection | Internally unconnected; must be left floating or tied to ground per layout best practices |
| 2 | Inverting input (−IN) | 30 Ω input impedance node; requires precise RF/RG matching for inverting gain stability |
| 3 | Non-inverting input (+IN) | 1 MΩ input impedance node; low bias current (−7 µA typ) minimizes offset error in high-Z sensor interfaces |
| 4 | Negative supply (V−) | Accepts −6.75 V absolute max; decoupling capacitor required within 1 cm for RF stability |
| 5 | No connection | Internally unconnected; no routing or thermal pad connection needed |
| 6 | Output (OUT) | Low 0.05 Ω closed-loop output impedance; series RISO (≥51 Ω) required for >5 pF capacitive loads |
| 7 | Positive supply (V+) | Accepts +6.75 V absolute max; dual ±5 V operation yields 3.45 V linear output swing into ∞ load |
| 8 | Shutdown (SD) | Active-low TTL input; 0.2–0.9 mA disabled current flows partially through SD pin, requiring current-limiting resistor if driven by open-drain logic |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Enables stable unity-gain operation with fixed RF = 390 Ω, eliminating need for external compensation networks |
| 0.1-dB gain flatness | 150 MHz at 2 VPP - preserves amplitude integrity across HDTV (1080p60) and VGA (1920×1200@60Hz) baseband spectra |
| Capacitive load drive support | RISO optimization chart (Fig. 21) enables stable operation with 5–120 pF loads, critical for PCB trace and connector capacitance |
| Video-optimized linearity | 0.01% DG / 0.02° DP at 4.43 MHz meets NTSC/PAL broadcast standards without post-correction circuitry |
| Fast enable/disable | 10 ns transition time with <50 mVPP glitch allows use in time-division multiplexed analog signal paths |
Applications
| RGB Video Driver | Flash A/D Converter Driver |
|---|---|
|
Use Scenario: Driving three parallel 75 Ω coaxial outputs for HDMI source equipment or projector RGB inputs. IC Role / Device Role / Timing Role: Final-stage buffer amplifying baseband R/G/B signals with DC coupling and minimal group delay variation. Use Value: 0.01% differential gain error prevents color saturation shifts; 1200 MHz bandwidth accommodates 1080p60 pixel clocks with >10 dB SNR margin. |
Use Scenario: Front-end conditioning of analog signals feeding 12-bit, 100+ MSPS flash ADCs in test instrumentation. IC Role / Device Role / Timing Role: High-slew-rate, low-noise driver ensuring full-scale settling within 10 ns (0.1% error) before ADC aperture window. Use Value: −69 dBc 2nd-harmonic distortion at 20 MHz avoids aliasing spurs; 2.3 nV/√Hz noise contributes <0.5 LSB RMS error in 12-bit conversion. |
| Wide Dynamic Range IF Amplifier | Radar Receiver Baseband Amplifier |
|
Use Scenario: Amplifying 50–500 MHz IF signals in software-defined radio receivers requiring >80 dB SFDR. IC Role / Device Role / Timing Role: Fixed-gain, wideband IF gain block placed after mixer and before digital downconversion. Use Value: −80 dBc 3rd-order IMD at 50 MHz (5 dBm/tone) maintains signal purity; PSRR >46 dB rejects supply noise from adjacent LDOs. |
Use Scenario: Conditioning baseband I/Q outputs from quadrature demodulators in pulsed-Doppler radar front ends. IC Role / Device Role / Timing Role: Low-phase-noise, low-distortion amplifier for 0–100 MHz complex baseband signals prior to ADC sampling. Use Value: 0.02° differential phase error preserves Doppler velocity resolution; 4500 V/µs slew rate handles fast pulse rise times without droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6702MA/NOPB | Lower 1.0 GHz bandwidth, −65 dBc 2nd HD at 20 MHz, same SOIC-8 package and pinout | Reduced performance margin for >100 MSPS ADC drivers or 1080p60 video; suitable for cost-sensitive 720p systems | Select when 1.0 GHz bandwidth suffices and BOM consolidation with LMH6703 footprint is prioritized |
| THS3201D | 1.8 GHz bandwidth but higher 3.1 nV/√Hz noise, no shutdown pin, SOIC-8 package | Better raw speed for >1 GSPS sampling, but degraded SNR in noise-critical IF stages; lacks power-gating capability | Choose for maximum bandwidth where shutdown and ultra-low noise are secondary to slew rate |
Compared with LMH6703MA/NOPB, LMH6702MA/NOPB trades 200 MHz bandwidth and 4 dB harmonic suppression for lower cost and identical layout reuse, while THS3201D sacrifices noise floor and power control to achieve higher small-signal bandwidth-making LMH6703MA/NOPB the optimal balance for video fidelity, ADC drive accuracy, and system-level power management.
Availability
LMH6703MA/NOPB is available at Aetrix Electronics and suitable for RGB video driver, flash A/D converter interface, and wide-dynamic-range IF amplifier applications requiring stable component supply, long-term production continuity, and TI-authorized traceability.
Supply support for LMH6703MA/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 with over 90 years of innovation in precision amplifiers and high-speed signal chain products.
LMH6703MA/NOPB belongs to TI's LMH™ high-speed op amp product line, engineered specifically for ultra-high-resolution video systems and wide-dynamic-range receivers demanding exceptional signal fidelity, low distortion, and robust capacitive load drive capability.
FAQ
What is the recommended feedback resistor value for LMH6703MA/NOPB in SOIC-8 package?
The LMH6703MA/NOPB datasheet specifies RF = 390 Ω for SOIC-8 configuration at AV = +2 with ±5 V supplies. This value optimizes bandwidth flatness and pulse response; deviating significantly causes peaking or bandwidth loss. LMH6703MA/NOPB requires this external resistor for stable current-feedback operation-no internal compensation is provided.
Does LMH6703MA/NOPB support single-supply operation?
LMH6703MA/NOPB is characterized for split-supply operation (±4 V to ±6 V) and does not guarantee rail-to-rail input/output swing under single-supply conditions. Its input common-mode range is ±1.9 V, and output swing is ±3.45 V into high-Z load-making it unsuitable for 0–5 V or 0–3.3 V systems without level-shifting circuitry.
How does the shutdown function behave on LMH6703MA/NOPB?
LMH6703MA/NOPB enters low-power state when SD pin voltage ≤ 0.8 V (VIL), drawing 0.9 mA total supply current and presenting high-impedance I/O. Output glitch is limited to 50 mVPP during transition. The shutdown pin has internal 20 kΩ pull-up; driving it low requires sinking ≤400 µA (IIL max) without violating −0.3 V absolute minimum.
Can LMH6703MA/NOPB drive 75 Ω video loads directly?
Yes-LMH6703MA/NOPB delivers ±90 mA linear output current and is explicitly validated for 75 Ω loads in video applications. At 4.43 MHz, it achieves 0.01% differential gain and 0.02° differential phase error into 150 Ω, and maintains >45 dB CMRR up to 10 MHz-confirming robust performance in broadcast-quality RGB and YPbPr distribution.
What layout considerations are critical for LMH6703MA/NOPB stability?
LMH6703MA/NOPB requires tight power-supply decoupling: 100 nF ceramic + 10 µF tantalum within 1 cm of V+/V− pins. For capacitive loads >5 pF, a series RISO (51–100 Ω) between OUT and load is mandatory per Figure 21. Ground plane must be solid beneath the SOIC-8 body; inverting input traces must avoid coupling to noisy digital lines due to its 30 Ω impedance.
LMH6703MA/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:
- 4500V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.8 GHz
- Current - Input Bias:
- 7 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 11mA
- Current - Output / Channel:
- 90 mA
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMH6703MA/NOPB FAQ
1.How can I place an order for LMH6703MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6703MA/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 LMH6703MA/NOPB reliable?
The price and inventory of LMH6703MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6703MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6703MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6703MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6703MA/NOPB?
LMH6703MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6703MA/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 LMH6703MA/NOPB?
For technical support, including LMH6703MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6703MA/NOPB requirements.
6.How does Aetrix verify that LMH6703MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6703MA/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 LMH6703MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6703MA/NOPB?
All LMH6703MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6703MA/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 LMH6703MA/NOPB part is unused and in its original packaging.
Return procedure for LMH6703MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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