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Texas Instruments LMH6723MFX-TI
- Part No.:
- LMH6723MFX-TI
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMH6723MFX-TI.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:23,308
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Product details
Overview
LMH6723MFX-TI from Texas Instruments (formerly National Semiconductor) is a single-channel current-feedback operational amplifier optimized for high-speed video and portable signal conditioning. It delivers 260 MHz small-signal bandwidth at +2 V/V gain, 600 V/µs slew rate, and 110 mA linear output current while consuming only 1.2 mA from ±5V supplies - enabling NTSC/PAL line driving and A/D converter buffering in battery-powered systems.
For engineers reviewing the LMH6723MFX-TI datasheet, LMH6723MFX-TI pinout, LMH6723MFX-TI application, or LMH6723MFX-TI equivalent, key selection criteria include its 0.03% differential gain / 0.11° differential phase performance, 0.1 dB gain flatness to 100 MHz, unity-gain stability, and SOT-23-5 package compatibility with space-constrained portable video and instrumentation designs.
Technical Context
The LMH6723MFX-TI employs a current-feedback architecture with a low-impedance inverting input (~500 Ω) and high-impedance non-inverting input (~100 kΩ), enabling gain-bandwidth independence via precise feedback resistor (RF) selection. Its VIP10 complementary bipolar process ensures stable operation across 4.5–12 V supply ranges and supports both single- and split-supply configurations without internal ground reference.
It achieves 2.5 ns rise/fall time and 30 ns settling to 0.05% for 2 V steps, with distortion of –65 dBc (HD2) and –63 dBc (HD3) at 5 MHz. Input voltage range extends to ±4.0 V (CMVR) under ±5 V supplies, and output swing reaches ±3.9 V into high-impedance loads - critical for driving back-terminated 75 Ω video lines and ADC inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 260 MHz at AV = +2 V/V - enables full HD video signal amplification without gain peaking |
| Slew Rate | 600 V/µs - supports fast transient response for composite video sync pulses and digital waveform edges |
| Supply Current | 1.2 mA per amplifier at ±5 V - allows integration into power-sensitive portable DVD and camera modules |
| Differential Gain/Phase | 0.03% / 0.11° at 4.43 MHz - meets broadcast-grade NTSC/PAL video fidelity requirements |
| Output Current | ±110 mA linear sourcing/sinking - drives 75 Ω cables and heavy capacitive loads without clipping |
| Gain Flatness | 0.1 dB to 100 MHz - preserves amplitude integrity across baseband video spectrum |
| Input Offset Voltage | ±3.7 mV max - minimizes DC error in precision DC-coupled signal chains |
Pinout & Package
LMH6723MFX-TI is housed in a 5-pin SOT-23 package (NSC drawing MF05A), measuring 2.9 mm × 1.6 mm × 1.1 mm, with exposed pad thermal enhancement. Pin 1 is marked by a dot; device orientation follows JEDEC MO-178 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | High-impedance node (~100 kΩ); used for signal injection in non-inverting configurations |
| 2 (V−) | Negative supply rail | Connects to ground or negative supply; no internal reference - supports true single-supply operation |
| 3 (OUT) | Amplifier output | Low-output-impedance stage (~0.01 Ω closed-loop); capable of driving 100 Ω loads directly |
| 4 (IN−) | Inverting input | Low-impedance node (~500 Ω); sets feedback path impedance and governs RF selection |
| 5 (V+) | Positive supply rail | Accepts 4.5–12 V single supply or ±2.5–±6 V dual supply; bypassing required per Figure 4 |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable operation | Eliminates need for external compensation in buffer/gain=1 applications - simplifies layout for video line drivers |
| 0.1 dB gain flatness to 100 MHz | Preserves chroma/luma amplitude balance across entire NTSC/PAL baseband, avoiding color distortion |
| 2.5 ns rise/fall time | Meets timing budget for SD/HD video pixel clock distribution and fast-settling ADC front-ends |
| Back-termination compatible output | Supports 75 Ω cable driving with minimal reflections when used with series 37.5 Ω resistor (gain=2 configuration) |
| ESD protection | 2000 V HBM rating - withstands handling in portable assembly environments without additional protection circuitry |
Applications
| NTSC Line Driver | PAL Video Buffer |
|---|---|
Use Scenario: Driving composite NTSC video signals over 75 Ω coaxial cable to monitors or recording devices. IC Role / Device Role / Timing Role: High-current, low-distortion line driver with back-termination support and 0.03% differential gain. Use Value: Maintains broadcast-compliant color fidelity and sync pulse integrity up to 4.43 MHz without external equalization. | Use Scenario: Buffering PAL composite video in portable media players and set-top boxes. IC Role / Device Role / Timing Role: Unity-gain stable amplifier delivering 0.11° differential phase and 100 MHz flat bandwidth. Use Value: Preserves PAL-specific luminance/chrominance timing alignment across long PCB traces and connectors. |
| A/D Converter Driver | Portable DVD Output Stage |
Use Scenario: Conditioning analog sensor or video outputs prior to sampling by 10–12-bit ADCs. IC Role / Device Role / Timing Role: Low-noise, fast-settling driver with 30 ns to 0.05% and −65 dBc harmonic distortion. Use Value: Enables full-resolution digitization of fast transients without aperture error or harmonic contamination. | Use Scenario: Final-stage amplification of decoded video in handheld DVD players with 5 V single supply. IC Role / Device Role / Timing Role: Single-supply configured op amp delivering ±1.4 V swing into 100 Ω load at 1.1 mA quiescent current. Use Value: Extends battery life while maintaining HDMI/YPbPr interface signal integrity and EMI robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6723MA/NOPB | Same die, SOIC-8 package (θJA = 166°C/W vs. SOT-23's 230°C/W); higher thermal mass but larger footprint | Better suited for lab evaluation and multi-layer boards where thermal relief is prioritized over size | Select LMH6723MA/NOPB when board area permits and thermal derating margin is critical |
| THS3201DR | Higher 1.8 GHz GBW but 12 mA supply current; requires ±5 V min, not 4.5 V single-supply capable | Targeted at test equipment and wideband IF stages - not optimized for portable video power budgets | Choose THS3201DR only when >1 GHz bandwidth is mandatory and power efficiency is secondary |
Compared with LMH6723MFX-TI, LMH6723MA/NOPB offers identical electrical performance in a thermally superior but larger package, while THS3201DR trades 10× higher supply current for 7× greater bandwidth - making LMH6723MFX-TI the optimal choice for space- and power-constrained portable video interfaces.
Availability
LMH6723MFX-TI is available at Aetrix Electronics and suitable for portable video, A/D converter front-ends, and NTSC/PAL line driving requiring stable component supply, consistent parametric performance across temperature, and RoHS-compliant packaging.
Supply support for LMH6723MFX-TI 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 acquired National Semiconductor in 2011 and maintains full technical and manufacturing continuity for legacy high-speed analog products.
The LMH6723MFX-TI belongs to TI's current-feedback op amp portfolio designed specifically for portable video, instrumentation, and high-fidelity signal acquisition where bandwidth, power efficiency, and video distortion metrics are jointly critical.
FAQ
What is the recommended feedback resistor value for LMH6723MFX-TI at +2 V/V gain?
The LMH6723MFX-TI datasheet specifies 1200 Ω as the optimal feedback resistor (RF) for +2 V/V non-inverting gain with ±5 V supplies. This value balances bandwidth (260 MHz), gain flatness (0.1 dB to 100 MHz), and stability - deviating significantly causes peaking or roll-off. LMH6723MFX-TI's inverting input impedance (~500 Ω) makes RF selection critical; lower values risk oscillation, higher values reduce bandwidth.
Can LMH6723MFX-TI operate from a single 5 V supply for NTSC video?
Yes - LMH6723MFX-TI supports single 5 V operation with AC-coupled, level-shifted NTSC input centered at 2.5 V. Its common-mode input range extends to ±4.0 V (relative to V−), and output swings to ±3.9 V into high-Z loads. For 75 Ω cable driving, configure as gain=2 with 37.5 Ω series output resistor to compensate for 6 dB loss, as shown in TI's typical application diagram.
What is the maximum capacitive load LMH6723MFX-TI can drive without instability?
LMH6723MFX-TI can drive up to 100 pF directly, but for loads >20 pF, TI recommends adding a series output resistor (ROUT). The "Suggested ROUT vs. Cap Load" chart indicates 15 Ω for 50 pF and 47 Ω for 100 pF to limit peaking to ≤0.5 dB. Placing ROUT inside the feedback loop (Figure 6) preserves gain accuracy but reduces output swing - critical for maintaining NTSC differential phase specs.
How does LMH6723MFX-TI compare to CLC450 in video applications?
LMH6723MFX-TI is an improved replacement for CLC450, offering 260 MHz bandwidth (vs. 200 MHz), 600 V/µs slew rate (vs. 500 V/µs), and lower 0.03% differential gain error (vs. 0.05%). It also consumes 1.2 mA (vs. 1.8 mA) and supports wider 4.5–12 V supply range. These improvements directly enhance NTSC/PAL color fidelity and extend battery life in portable DVD and camcorder designs using LMH6723MFX-TI.
Is LMH6723MFX-TI pin-compatible with other LMH672x variants?
No - LMH6723MFX-TI (SOT-23-5) is not pin-compatible with LMH6724MA (SOIC-8 dual) or LMH6725MA (SOIC-14 quad). Each variant has distinct pin counts and assignments. The LMH6723MFX-TI pinout is unique to the single-channel SOT-23 package: IN+, V−, OUT, IN−, V+. Substituting packages requires PCB redesign; only LMH6723MF/LMH6723MFX share identical pinout and marking (AB1A).
LMH6723MFX-TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMH®
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- 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-TI FAQ
1.How can I place an order for LMH6723MFX-TI through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6723MFX-TI 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-TI reliable?
The price and inventory of LMH6723MFX-TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6723MFX-TI is usually 5 days.
3.What payment methods are accepted for LMH6723MFX-TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6723MFX-TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6723MFX-TI?
LMH6723MFX-TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6723MFX-TI 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-TI?
For technical support, including LMH6723MFX-TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6723MFX-TI requirements.
6.How does Aetrix verify that LMH6723MFX-TI is sourced from the original manufacturer or authorized distributors?
All LMH6723MFX-TI 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-TI meets industry standards.
7.What is the process for return or replacement of LMH6723MFX-TI?
All LMH6723MFX-TI units undergo pre-shipment inspection (PSI). If there is an issue with LMH6723MFX-TI, 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-TI part is unused and in its original packaging.
Return procedure for LMH6723MFX-TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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