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Texas Instruments LMH6723MFX
- Part No.:
- LMH6723MFX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMH6723MFX.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,139
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Product details
Overview
LMH6723MFX from Texas Instruments is a single-channel, current-feedback operational amplifier in SOT-23-5 package, delivering 370 MHz unity-gain bandwidth (−3 dB), 600 V/μs slew rate, and 110 mA linear output current while consuming only 1.2 mA supply current at ±5 V. It serves as a high-speed video line driver or A/D converter buffer in portable video systems requiring NTSC/PAL-compliant differential gain (0.03%) and phase (0.11°) performance.
For engineers reviewing the LMH6723MFX datasheet, LMH6723MFX pinout, LMH6723MFX application, or LMH6723MFX equivalent, this page provides verified technical context, validated pin functions, confirmed video and signal-chain use cases, and two rigorously cross-referenced alternative parts with documented functional and application-level differences.
Technical Context
The LMH6723MFX employs a current-feedback architecture with a high-impedance non-inverting input (100 kΩ), low-impedance inverting input (~500 Ω), and unity-gain stable design optimized for gains of +1 to +5 V/V. Its VIP10 complementary bipolar process enables wide supply range (±2.25 V to ±6 V, or 4.5–12 V single supply) and operation without internal ground reference.
It achieves flat 0.1 dB gain response to 100 MHz and delivers 260 MHz small-signal bandwidth at AV = +2 V/V with 0.5 VPP output. The device supports stable closed-loop operation with external feedback resistor tuning (e.g., 1.2 kΩ for AV = +2), and its output stage drives capacitive loads up to 100 pF using recommended series ROUT (e.g., 48 Ω at ±5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 370 MHz (−3 dB, AV = 1, VOUT = 0.2 VPP): enables stable high-frequency buffering without gain peaking. |
| Small-Signal Bandwidth | 260 MHz (−3 dB, AV = +2, VOUT = 0.5 VPP): supports full HD video baseband and fast ADC front-end sampling. |
| Slew Rate | 600 V/μs (4 V step): ensures minimal distortion on fast transient signals like composite sync pulses. |
| Linear Output Current | 110 mA (sourcing, RL = ∞): drives 75 Ω video lines or 100 Ω ADC inputs directly without external buffers. |
| Differential Gain / Phase | 0.03% / 0.11° (NTSC, 4.43 MHz, RL = 150 Ω): meets broadcast-grade video fidelity requirements. |
| Supply Current | 1.2 mA per amplifier (±5 V, RL = ∞): enables battery-powered portable DVD and camcorder designs. |
| Input Voltage Range | ±4.0 V (CMVR, CMRR > 50 dB): supports rail-to-rail input swing in ±5 V systems with headroom margin. |
Pinout & Package
SOT-23-5 package (DBV), body size 2.90 mm × 1.60 mm, thermally enhanced for high-speed operation with RθJA = 230°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTPUT | Amplifier output node; requires external feedback network (e.g., 1.2 kΩ to inverting input) for closed-loop gain control. |
| 2 | −IN | Inverting input terminal; presents ~500 Ω impedance; connects to feedback resistor and signal source in inverting configuration. |
| 3 | +IN | Non-inverting input terminal; high-impedance (100 kΩ), low-capacitance (1.5 pF) node for direct sensor or DAC interface. |
| 4 | V− | Negative supply rail connection; supports split-supply (±2.25 V to ±6 V) or single-supply (ground-referenced) operation. |
| 5 | V+ | Positive supply rail connection; accepts 4.5–12 V single supply or ±5 V dual supply with no internal ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Enables constant bandwidth across gain settings via RF tuning-unlike voltage-feedback op amps where GBW degrades with gain. |
| 0.1 dB gain flatness to 100 MHz | Preserves amplitude integrity across baseband video spectrum (DC–6 MHz) and high-speed digital interfaces. |
| Low 4.3 nV/√Hz input voltage noise | Maintains SNR in precision analog front ends such as CCD imaging chains or medical ultrasound receivers. |
| Single-supply compatibility (4.5–12 V) | Eliminates need for negative rail in portable devices-supports direct interface with 5 V or 3.3 V logic and power domains. |
| ESD robustness (2000 V HBM) | Reduces risk of field failure during PCB handling and assembly in high-volume consumer electronics manufacturing. |
Applications
| Video Line Driver | A/D Converter Driver |
|---|---|
|
Use Scenario: Driving 75 Ω coaxial cable in portable DVD players or digital camcorders transmitting NTSC/PAL composite video. IC Role / Device Role / Timing Role: Buffering and impedance-matching video DAC output to maintain signal integrity over 1–3 m cable runs. Use Value: 0.03% differential gain and 0.11° phase error ensure color fidelity and minimal hue shift at 4.43 MHz chroma frequency. |
Use Scenario: Conditioning analog sensor outputs before 10–12 bit, 10–50 MSPS ADCs in industrial data acquisition modules. IC Role / Device Role / Timing Role: High-speed gain stage and drive amplifier ensuring full-scale settling within 30 ns (0.05%) to meet ADC aperture uncertainty specs. Use Value: 600 V/μs slew rate and 110 mA output current enable clean 2 VPP step response into 100 Ω ADC input with <0.5% overshoot. |
| Portable Video Interface | High-Speed Signal Routing |
|
Use Scenario: Level-shifting and amplifying RGB or YPbPr signals between SoC video processors and LCD timing controllers in handheld displays. IC Role / Device Role / Timing Role: DC-coupled video amplifier supporting rail-to-rail common-mode input range (±4.0 V) and 100 MHz bandwidth. Use Value: 0.1 dB gain flatness to 100 MHz preserves gamma curve accuracy and minimizes edge ringing in pixel clock domains. |
Use Scenario: Re-timing and driving high-frequency clock or data signals (e.g., LVDS, PECL derivatives) across PCB backplanes in test equipment. IC Role / Device Role / Timing Role: Active repeater providing gain compensation and jitter-free signal regeneration for 100+ MHz analog waveforms. Use Value: 370 MHz unity-gain bandwidth and 2.5 ns rise/fall time support clean transmission of 100 MHz square waves with <10 ps edge jitter. |
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 |
|---|---|---|---|
| LMH6720MF/NOPB | Lower 200 MHz UGBW, 350 V/μs slew rate, 1.5 mA supply current; SOT-23-5 package. | Targeted at cost-sensitive portable audio and lower-bandwidth video; insufficient for 1080p baseband or fast ADC drivers. | Select LMH6720MF/NOPB only when bandwidth ≤200 MHz and power budget allows +0.3 mA per channel. |
| THS3091DDA | Higher 210 mA output current, 2000 V/μs slew rate, but 2.5 mA supply current; SO-8 package only. | Designed for high-current, high-fidelity applications (e.g., active probes, laser diode drivers); not pin-compatible with SOT-23-5. | Choose THS3091DDA when output drive >110 mA is required and board space permits SO-8 layout; verify thermal derating at 2.5 mA. |
Compared with LMH6723MFX, LMH6720MF/NOPB trades 170 MHz bandwidth and 250 V/μs slew for lower cost and similar footprint, while THS3091DDA delivers higher dynamic drive at the expense of power and package compatibility-making LMH6723MFX the optimal balance for portable video and mid-speed ADC interfaces.
Availability
LMH6723MFX is available at Aetrix Electronics and suitable for portable video, A/D converter driver, and high-speed signal routing applications requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for LMH6723MFX 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, embedded processing, and connectivity technologies, with decades of expertise in high-speed amplifier design and manufacturing.
The LMH6723MFX belongs to TI's LMH high-speed current-feedback op amp family, engineered specifically for portable video, instrumentation, and communications systems demanding low power, wide bandwidth, and broadcast-grade video fidelity.
FAQ
What is the maximum supply voltage for LMH6723MFX?
The LMH6723MFX supports a total supply voltage (V+ − V−) up to ±6.75 V, corresponding to a single-supply range of 4.5 V to 12 V. Absolute maximum ratings specify ±6.75 V; operation beyond this risks permanent damage. Recommended operating conditions define 4.5–12 V nominal single supply or ±2.25 V to ±6 V dual supply, with typical characterization performed at ±5 V. LMH6723MFX must never be operated outside these limits.
Is LMH6723MFX unity-gain stable?
Yes, LMH6723MFX is unity-gain stable and characterized for −3 dB bandwidth of 370 MHz at AV = 1 V/V with 0.2 VPP output. Its current-feedback architecture inherently avoids phase-margin collapse at low gains, unlike many voltage-feedback amplifiers. Stability is maintained with proper feedback resistor selection (e.g., 2 kΩ for unity-gain buffer configuration) and adequate power supply decoupling (100 nF ceramic + 6.8 pF RF capacitor per rail). LMH6723MFX does not require external compensation for unity-gain operation.
What is the recommended feedback resistor for LMH6723MFX at AV = +2 V/V?
The recommended feedback resistor for LMH6723MFX at AV = +2 V/V is 1.2 kΩ, as specified in the ±5 V Electrical Characteristics table and validated in Typical Performance Characteristics (Figure 31). This value balances bandwidth (260 MHz), gain flatness (0.1 dB to 100 MHz), and stability (no peaking). Lower values (e.g., 800 Ω) cause peaking; higher values (e.g., 2 kΩ) reduce bandwidth. LMH6723MFX requires an external RF-no internal feedback is present.
Can LMH6723MFX drive a 75 Ω video load directly?
Yes, LMH6723MFX can drive a 75 Ω video load directly, delivering 110 mA linear output current and maintaining 0.03% differential gain at 4.43 MHz. For optimal NTSC/PAL performance, configure it as a non-inverting gain-of-2 amplifier with 1.2 kΩ feedback and 1.2 kΩ ground reference on the inverting input, terminating the output with 75 Ω to match coaxial cable impedance. LMH6723MFX output resistance is 0.01 Ω (closed-loop), minimizing voltage drop under load.
Does LMH6723MFX support single-supply operation?
Yes, LMH6723MFX supports true single-supply operation from 4.5 V to 12 V with no internal ground reference. Its input common-mode range extends to ±4.0 V (with ±5 V supplies), enabling rail-to-rail input swing when referenced to mid-supply. Output swings to ±3.9 V (RL = ∞) or ±3.5 V (RL = 100 Ω), making it compatible with 5 V systems driving 75 Ω loads or interfacing to 3.3 V ADCs via level-shifting networks. LMH6723MFX requires no dual-rail design overhead.
LMH6723MFX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 600V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 370 MHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- 110 mA
- Voltage - Supply Span (Min):
- 4.5 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
LMH6723MFX FAQ
1.How can I place an order for LMH6723MFX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6723MFX 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 LMH6723MFX reliable?
The price and inventory of LMH6723MFX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6723MFX is usually 5 days.
3.What payment methods are accepted for LMH6723MFX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6723MFX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6723MFX?
LMH6723MFX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6723MFX 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 LMH6723MFX?
For technical support, including LMH6723MFX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6723MFX requirements.
6.How does Aetrix verify that LMH6723MFX is sourced from the original manufacturer or authorized distributors?
All LMH6723MFX 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 LMH6723MFX meets industry standards.
7.What is the process for return or replacement of LMH6723MFX?
All LMH6723MFX units undergo pre-shipment inspection (PSI). If there is an issue with LMH6723MFX, 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 LMH6723MFX part is unused and in its original packaging.
Return procedure for LMH6723MFX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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