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Texas Instruments LMH6672MAX/NOPB
- Part No.:
- LMH6672MAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6672MAX/NOPB.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,391
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Product details
Overview
LMH6672MAX/NOPB from Texas Instruments is a dual, high-speed, high-output-current voltage-feedback operational amplifier designed for demanding line driver applications. It delivers ±200 mA output current into 25 Ω loads at 9.6 VPP, achieves 90 MHz −3 dB bandwidth (G = +2), and maintains −105 dBc SFDR at 100 kHz with 8.4 VPP swing - enabling full-rate upstream ADSL signal integrity on PCI modem cards.
For engineers reviewing the LMH6672MAX/NOPB datasheet, LMH6672MAX/NOPB pinout, LMH6672MAX/NOPB application, or LMH6672MAX/NOPB equivalent, key selection criteria include differential output drive capability (19.2 VPP into 50 Ω), rail-to-rail output swing within 1 V of supplies, low distortion at high frequencies, thermal performance in SOIC packaging, and compatibility with ±2.5 V to ±6.5 V dual-supply operation.
Technical Context
The LMH6672MAX/NOPB employs a class-AB output stage optimized for low-distortion, high-current delivery into 25–100 Ω loads. Its architecture supports stable operation at gains ≥ +2 V/V without external compensation, and features input common-mode range extending to ±6 V with ±6 V supplies.
It operates across −40°C to +150°C ambient temperature, with quiescent supply current of 7.2 mA per amplifier and total power dissipation up to 346 mW in DSL line-driver configurations. Thermal resistance is 172°C/W for the SOIC (D) package, requiring attention to PCB copper area and ambient airflow in high-power applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 90 MHz at G = +2 - enables wideband xDSL signal amplification without phase loss. |
| Slew Rate | 135 V/µs - supports fast transient response for high-fidelity DMT ADSL upstream bursts. |
| Output Current | ±200 mA @ 9.6 VPP, RL = 25 Ω - drives low-impedance transformer-coupled lines directly. |
| Harmonic Distortion | −105 dBc 2nd HD @ 100 kHz, 8.4 VPP, RL = 25 Ω - meets upstream full-rate ADSL spectral mask requirements. |
| Input Noise | 3.1 nV/√Hz - preserves SNR in high-gain, broadband front-end stages. |
| Supply Range | ±2.5 V to ±6.5 V - compatible with standard dual-rail telecom and industrial power rails. |
| Operating Temp | −40°C to +150°C - qualified for extended-temperature industrial and CPE environments. |
Pinout & Package
LMH6672MAX/NOPB is housed in an 8-pin SOIC (D) package measuring 4.89 mm × 3.90 mm, with exposed pad floating (not internally connected). Thermal resistance is 172°C/W junction-to-ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Channel A output | High-current, low-distortion output node capable of ±200 mA sourcing/sinking into 25 Ω. |
| 2 (−IN A) | Channel A inverting input | Differential input terminal for closed-loop gain configuration; supports stable G ≥ +2 V/V. |
| 3 (+IN A) | Channel A non-inverting input | High-impedance input referenced to system ground or bias network; CMVR extends to ±6 V. |
| 4 (V−) | Negative supply rail | Connects to −2.5 V to −6.5 V rail; must be bypassed locally with low-ESR ceramic capacitor. |
| 5 (+IN B) | Channel B non-inverting input | Independent second channel input; identical specs and biasing to Channel A. |
| 6 (−IN B) | Channel B inverting input | Enables dual-channel line driver or independent signal conditioning without cross-talk. |
| 7 (OUT B) | Channel B output | Matched output performance to OUT A; used for differential pair or separate load driving. |
| 8 (V+) | Positive supply rail | Connects to +2.5 V to +6.5 V rail; requires local 0.1 µF ceramic bypass near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual high-output-current op amp | Two independent channels each deliver ±200 mA into 25 Ω - eliminates need for external buffer stages in line drivers. |
| Rail-to-rail output swing | Drives within 1 V of V+ and V− rails - maximizes dynamic range for fixed-supply systems like PCI modem cards. |
| Low distortion at high frequency | −98 dBc SFDR @ 1 MHz, 2 VPP, RL = 100 Ω - ensures clean spectral purity in xDSL upstream transmission bands. |
| Stable at G ≥ +2 V/V | No external compensation required - simplifies layout and reduces component count in gain-setting networks. |
| Extended temperature range | Specified from −40°C to +150°C - supports deployment in uncooled CPE enclosures and industrial base stations. |
Applications
| ADSL PCI Modem Card | xDSL External Modem |
|---|---|
|
Use Scenario: Full-rate upstream ADSL signal amplification on PCI-based DSL interface cards. IC Role / Device Role / Timing Role: Dual-channel line driver delivering differential 19.2 VPP into 50 Ω transformer primary. Use Value: Meets ITU-T G.992.1 spectral mask with −105 dBc 2nd harmonic distortion at 100 kHz, eliminating need for post-amplifier filtering. |
Use Scenario: High-fidelity analog line driver in compact external DSL modems with space-constrained PCBs. IC Role / Device Role / Timing Role: Single-ended 9.6 VPP driver into 25 Ω termination, operating from ±5 V supplies. Use Value: Delivers 135 V/µs slew rate and 90 MHz bandwidth while consuming only 7.2 mA per channel - extends battery life in portable test equipment variants. |
| Line Driver for Active Filters | High-Speed Signal Conditioning |
|
Use Scenario: Driving low-impedance active filter outputs in telecom test instrumentation. IC Role / Device Role / Timing Role: Output buffer stage maintaining signal fidelity through 2nd-order Chebyshev filter response. Use Value: 3.1 nV/√Hz input noise and −110 dBc 3rd harmonic distortion preserve SNR and THD across 100 kHz–1 MHz band. |
Use Scenario: Wideband pulse amplification in automated test equipment (ATE) signal sources. IC Role / Device Role / Timing Role: Fast-settling gain block for 23.5 ns rise/fall time pulses with minimal overshoot. Use Value: 135 V/µs slew rate and 90 MHz bandwidth ensure <1% settling error for 4 V step signals - critical for digital pattern generator interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-output-current op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6672MA/NOPB | Identical electrical specs and SOIC (D) package; differs only in tube packaging (95 pcs vs. 2500 pcs tape-and-reel). | Same functional use in ADSL line drivers and high-speed buffers; suited for prototyping or low-volume production. | Select LMH6672MA/NOPB for evaluation or small-batch builds where reel handling is unnecessary. |
| LMH6672MR/NOPB | SO PowerPAD (DDA) package with RθJA = 58.6°C/W - 66% lower thermal resistance than SOIC (D). | Better suited for sustained high-power operation (e.g., continuous 346 mW dissipation) in thermally constrained enclosures. | Choose LMH6672MR/NOPB when junction temperature must stay below 125°C at 85°C ambient with full ADSL load. |
Compared with LMH6672MAX/NOPB, LMH6672MA/NOPB offers identical performance in smaller packaging quantities, while LMH6672MR/NOPB provides superior thermal management via PowerPAD - making it preferable for high-duty-cycle or sealed-environment deployments where SOIC thermal limits would otherwise constrain output power.
Availability
LMH6672MAX/NOPB is available at Aetrix Electronics and suitable for ADSL line drivers, xDSL modem designs, and high-speed active filter applications requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.
Supply support for LMH6672MAX/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 amps and communications infrastructure ICs.
The LMH6672MAX/NOPB belongs to TI's high-output-current op amp product line, engineered specifically for xDSL line driver and broadband signal conditioning applications where low distortion, high slew rate, and robust thermal performance are mandatory.
FAQ
What is the maximum output voltage swing of LMH6672MAX/NOPB into a 25 Ω load?
The LMH6672MAX/NOPB delivers ±4.8 V output swing into a 25 Ω load with ±6 V supplies, meaning a total differential swing of 19.2 VPP. This is confirmed in the Electrical Characteristics table under "VO Output Swing" with RL = 25 Ω and VS = ±6 V. The device achieves this while maintaining low distortion and stability at gain ≥ +2 V/V - critical for xDSL line driver compliance.
Does LMH6672MAX/NOPB support single-supply operation?
No - the LMH6672MAX/NOPB is specified exclusively for dual-supply operation from ±2.5 V to ±6.5 V. Its input common-mode range and output swing are defined relative to symmetric rails, and the datasheet does not characterize performance with single-ended supplies. For single-supply line drivers, TI recommends alternatives such as the THS3201 or OPA567.
What is the thermal resistance (RθJA) of the LMH6672MAX/NOPB package?
The LMH6672MAX/NOPB uses the SOIC (D) 8-pin package with a junction-to-ambient thermal resistance of 172°C/W, as documented in Section 6.4 "Thermal Information". This value assumes standard JEDEC high-K board conditions; actual performance improves with added copper pour and airflow. For higher-power applications, the SO PowerPAD variant (LMH6672MR/NOPB) offers RθJA = 58.6°C/W.
Can LMH6672MAX/NOPB drive a 50 Ω load differentially?
Yes - the LMH6672MAX/NOPB is explicitly characterized for differential 50 Ω loading, delivering 19.2 VPP with −98 dBc distortion at full upstream ADSL power levels. The datasheet's Typical Application diagram shows two LMH6672 channels configured as a complementary pair feeding a center-tapped transformer, confirming its suitability for balanced line driving in xDSL CPE hardware.
Is LMH6672MAX/NOPB RoHS compliant and lead-free?
Yes - LMH6672MAX/NOPB is RoHS compliant and features 100% matte tin (Sn) lead finish, as confirmed in the Package Option Addendum. It carries MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH) and is qualified for reflow up to 260°C peak temperature, meeting IPC/JEDEC J-STD-020 standards for lead-free assembly.
LMH6672MAX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMH®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 135V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 90 MHz
- Current - Input Bias:
- 8 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 7.2mA (x2 Channels)
- Current - Output / Channel:
- 525 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMH6672MAX/NOPB FAQ
1.How can I place an order for LMH6672MAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6672MAX/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 LMH6672MAX/NOPB reliable?
The price and inventory of LMH6672MAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6672MAX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6672MAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6672MAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6672MAX/NOPB?
LMH6672MAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6672MAX/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 LMH6672MAX/NOPB?
For technical support, including LMH6672MAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6672MAX/NOPB requirements.
6.How does Aetrix verify that LMH6672MAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6672MAX/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 LMH6672MAX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6672MAX/NOPB?
All LMH6672MAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6672MAX/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 LMH6672MAX/NOPB part is unused and in its original packaging.
Return procedure for LMH6672MAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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