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Texas Instruments LMH6626MAX/NOPB
- Part No.:
- LMH6626MAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6626MAX/NOPB.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,002
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Product details
Overview
LMH6626MAX/NOPB from Texas Instruments is a dual ultra-low-noise, wideband voltage-feedback operational amplifier in an 8-pin SOIC package. It delivers 1.3 GHz gain bandwidth, 0.92 nV/√Hz input voltage noise, and 350 V/μs slew rate at ±6 V supply, enabling high-fidelity signal conditioning in ultrasound pre-amplifiers and instrumentation sense amplifiers.
For engineers reviewing the LMH6626MAX/NOPB datasheet, LMH6626MAX/NOPB pinout, LMH6626MAX/NOPB application, or LMH6626MAX/NOPB equivalent, key selection criteria include input noise density below 1.0 nV/√Hz, stable operation for |AV| ≥10, dual-channel crosstalk rejection of −75 dB at 1 MHz, and SOIC-8 thermal resistance of 166 °C/W.
Technical Context
The LMH6626MAX/NOPB implements a traditional voltage-feedback topology with balanced differential inputs, delivering 81 dB open-loop gain and 95 dB common-mode rejection ratio. Its architecture supports both inverting and non-inverting configurations with closed-loop gains ≥10 without stability compromise.
It operates across ±2.25 V to ±6.3 V dual-supply or 5 V to 12 V single-supply ranges, with rail-to-rail output swing up to ±4.9 V (RL = 100 Ω) at ±6 V. Input bias current cancellation techniques minimize offset errors in high-impedance sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 1.3 GHz - enables stable closed-loop operation up to 100 MHz with gain ≥10 |
| Input Voltage Noise | 0.92 nV/√Hz at 1 MHz - preserves SNR in low-level analog front-ends like ultrasound receivers |
| Slew Rate | 350 V/μs (AV = +20, ±6 V) - supports fast transient response in pulse-amplification systems |
| Input Offset Voltage | ±0.5 mV max (−40°C to +125°C) - ensures DC accuracy in precision instrumentation |
| Crosstalk Rejection | −75 dB at 1 MHz - isolates channels in dual-signal-path applications such as stereo audio or dual-sensor readout |
| Supply Current per Channel | 16 mA typical (±6 V) - balances performance and power in space-constrained medical electronics |
| Output Swing | ±4.9 V into 100 Ω (±6 V supply) - drives 50 Ω transmission lines directly without external buffering |
Pinout & Package
LMH6626MAX/NOPB uses an 8-pin SOIC (Package D, body size 4.90 mm × 3.91 mm) with exposed pad not electrically connected. Thermal resistance RθJA is 166 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Channel A output - drives load with 100 mA sourcing/sinking capability |
| 2 | IN A− | Inverting input Channel A - accepts feedback network for precise gain control |
| 3 | IN A+ | Non-inverting input Channel A - connects to high-impedance sensor sources |
| 4 | V− | Negative supply - referenced to system ground in single-supply operation |
| 5 | N/C | No connection - must remain unconnected; no internal function |
| 6 | OUT B | Channel B output - independent signal path with matched AC/DC performance to Channel A |
| 7 | IN B− | Inverting input Channel B - isolated from Channel A except via shared supply rails |
| 8 | V+ | Positive supply - supplies both channels; decoupling required within 1 cm |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input voltage noise | 0.92 nV/√Hz enables detection of microvolt-level signals in medical imaging front-ends |
| Stable for |AV| ≥10 | Eliminates need for external compensation in high-gain sensor amplifiers |
| Dual-channel crosstalk rejection | −75 dB at 1 MHz prevents interference between parallel signal paths in multi-channel systems |
| Wide supply range | Operates from ±2.25 V to ±6.3 V dual or 5–12 V single supply - simplifies integration into legacy and new designs |
| High slew rate | 350 V/μs supports accurate reproduction of fast-rising pulses in time-of-flight measurements |
Applications
| Ultrasound Pre-amplifiers | Instrumentation Sense Amplifiers |
|---|---|
Use Scenario: Amplifying weak RF echo signals (2–15 MHz) from piezoelectric transducers in portable ultrasound machines. IC Role / Device Role / Timing Role: First-stage low-noise voltage amplifier with gain ≥20 before ADC digitization. Use Value: 0.92 nV/√Hz input noise preserves signal-to-noise ratio critical for image resolution and tissue differentiation. | Use Scenario: Conditioning low-level bridge outputs (e.g., strain gauges, RTDs) in industrial process controllers. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with minimal drift over temperature. Use Value: ±0.5 mV max input offset and ±0.2 μV/°C drift ensure <0.1% measurement error across −40°C to +125°C. |
| Magnetic Tape & Disk Pre-amps | Professional Audio Systems |
Use Scenario: Recovering high-frequency analog playback signals from magnetic storage heads with minimal added distortion. IC Role / Device Role / Timing Role: Wideband analog front-end with flat frequency response up to 85 MHz (−3 dB). Use Value: −80 dBc third-harmonic distortion at 10 MHz ensures faithful reproduction of high-frequency content without spectral contamination. | Use Scenario: Driving balanced line outputs in studio-grade microphone preamplifiers and digital audio converters. IC Role / Device Role / Timing Role: Dual-channel output driver with matched channel performance and low crosstalk. Use Value: −75 dB crosstalk at 1 MHz prevents left/right channel bleed in stereo monitoring systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual ultra-low-noise op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6626MM/NOPB | VSSOP-8 package (3.0 mm × 3.0 mm); 235 °C/W RθJA; identical electrical specs | Better suited for space-constrained PCBs where SOIC footprint is prohibitive | Select LMH6626MM/NOPB when board area is limited and thermal management allows higher junction temperature rise |
| ADA4898-2 | Lower input voltage noise (0.9 nV/√Hz), higher supply current (18 mA/ch), ±3 V to ±12 V supply range | Preferred in high-precision DC-critical applications due to lower offset drift (±0.1 μV/°C) | Choose ADA4898-2 when sub-μV/°C drift and wider supply flexibility outweigh 2 mA/ch current penalty |
Compared with LMH6626MAX/NOPB, LMH6626MM/NOPB offers identical performance in a smaller package but requires tighter thermal design, while ADA4898-2 trades higher quiescent current for superior DC precision and broader supply compatibility.
Availability
LMH6626MAX/NOPB is available at Aetrix Electronics and suitable for ultrasound pre-amplifiers, instrumentation sense amplifiers, and professional audio systems requiring stable component supply, long-term manufacturability, and TI-qualified automotive-grade traceability.
Supply support for LMH6626MAX/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 company headquartered in Dallas, Texas, designing and manufacturing analog ICs, embedded processors, and digital signal processors for industrial, automotive, and communications markets.
The LMH6626MAX/NOPB belongs to TI's high-speed precision op-amp product line, engineered specifically for wideband, low-noise signal acquisition in medical imaging, test equipment, and high-fidelity audio.
FAQ
What is the maximum recommended supply voltage for LMH6626MAX/NOPB?
The absolute maximum supply voltage (V+ − V−) for LMH6626MAX/NOPB is 13.2 V. The recommended operating range is ±2.25 V to ±6.3 V in dual-supply mode or 5 V to 12 V in single-supply configuration. Exceeding ±6.3 V risks permanent damage, and operation above 12 V in single-supply violates the Absolute Maximum Ratings table in the LMH6626MAX/NOPB datasheet.
Does LMH6626MAX/NOPB require external compensation for unity-gain stability?
No, LMH6626MAX/NOPB is not unity-gain stable. It is explicitly characterized and guaranteed stable only for closed-loop gains |AV| ≥10, as stated in the Features section and Electrical Characteristics tables. Attempting unity-gain or low-gain configurations without external compensation will result in oscillation or peaking, confirmed by Figure 45–46 showing gain peaking versus feedback resistor value in the LMH6626MAX/NOPB datasheet.
What is the thermal resistance (RθJA) of LMH6626MAX/NOPB in SOIC-8 package?
The junction-to-ambient thermal resistance (RθJA) for LMH6626MAX/NOPB in SOIC-8 (Package D) is 166 °C/W, as specified in Section 6.4 "Thermal Information" of the LMH6626MAX/NOPB datasheet. This value assumes standard JEDEC 2-layer board conditions and applies to both LMH6624 and LMH6626 variants in this package.
Can LMH6626MAX/NOPB drive a 50 Ω load directly?
Yes, LMH6626MAX/NOPB can drive a 50 Ω load directly: its output swing reaches ±4.9 V into 100 Ω at ±6 V supply, and it delivers 100 mA sourcing/sinking current (per channel). For 50 Ω, expected swing is ≥±4.3 V with <1% THD at 10 MHz, verified by output current vs. VOUT curves (Figures 21–28) and distortion data (Figure 35) in the LMH6626MAX/NOPB datasheet.
Is LMH6626MAX/NOPB pin-compatible with LMH6624?
No, LMH6626MAX/NOPB is not pin-compatible with LMH6624. LMH6624 is a single-channel device in SOT-23-5 or SOIC-8 packages with different pin mapping (e.g., pin 1 = OUT, pin 2 = V−, pin 3 = +IN, pin 4 = −IN, pin 5 = V+), whereas LMH6626MAX/NOPB is dual-channel in SOIC-8 with pins 1/6 = OUT A/B, pins 2/7 = IN A−/B−, pins 3/5 = IN A+/N/C, pin 4 = V−, pin 8 = V+. No shared pinout exists between the two devices.
LMH6626MAX/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:
- 400V/µs
- Gain Bandwidth Product:
- 1.5 GHz
- -3db Bandwidth:
- 95 MHz
- Current - Input Bias:
- 13 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 12mA (x2 Channels)
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMH6626MAX/NOPB FAQ
1.How can I place an order for LMH6626MAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6626MAX/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 LMH6626MAX/NOPB reliable?
The price and inventory of LMH6626MAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6626MAX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6626MAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6626MAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6626MAX/NOPB?
LMH6626MAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6626MAX/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 LMH6626MAX/NOPB?
For technical support, including LMH6626MAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6626MAX/NOPB requirements.
6.How does Aetrix verify that LMH6626MAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6626MAX/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 LMH6626MAX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6626MAX/NOPB?
All LMH6626MAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6626MAX/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 LMH6626MAX/NOPB part is unused and in its original packaging.
Return procedure for LMH6626MAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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