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Texas Instruments LMH6626MAX
- Part No.:
- LMH6626MAX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6626MAX.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,447
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Product details
Overview
LMH6626MAX from Texas Instruments is a dual-channel ultra-low-noise, wideband voltage-feedback operational amplifier optimized for high-fidelity signal conditioning in demanding analog front-ends. It delivers 1.3 GHz gain bandwidth, 0.92 nV/√Hz input voltage noise, and ±0.7 mV max input offset voltage over temperature - enabling precision amplification of low-amplitude, high-frequency signals in ultrasound pre-amplifiers and instrumentation sense circuits.
For engineers reviewing the LMH6626MAX datasheet, LMH6626MAX pinout, LMH6626MAX application, or LMH6626MAX equivalent, key selection criteria include its dual-channel SOIC-8/VSSOP-8 packaging, stable operation at |AV| ≥ 10, 350 V/μs slew rate (±6 V), and compatibility with ±2.5 V to ±6 V dual supplies or 5 V to 12 V single supplies.
Technical Context
The LMH6626MAX implements a traditional voltage-feedback topology with balanced differential inputs, delivering 81 dB open-loop gain, 95 dB CMRR, and 88 dB PSRR. Its architecture supports both inverting and non-inverting configurations with closed-loop gains ≥10 while maintaining stability across supply ranges and load conditions (e.g., 100 Ω).
It features low-input-bias-current cancellation design, rail-to-rail output swing capability (±4.3 V into 100 Ω at ±6 V), and integrated ESD protection (±2000 V HBM). The device operates across −40°C to +125°C and exhibits <±0.2 μV/°C input offset drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 1.3 GHz - enables stable closed-loop gain ≥10 up to ~130 MHz with minimal phase margin degradation |
| Input Voltage Noise | 0.92 nV/√Hz at 1 MHz - preserves SNR in low-level signal chains like magnetic tape/disk pre-amps |
| Slew Rate | 350 V/μs (±6 V, AV = 20) - supports fast transient response in pulse-based medical imaging systems |
| Input Offset Voltage | ±0.7 mV max (−40°C to +125°C) - ensures DC accuracy in precision instrumentation sense amplifiers |
| Supply Range | ±2.5 V to ±6 V dual or 5 V to 12 V single - compatible with legacy industrial and modern low-voltage embedded rails |
| Harmonic Distortion | HD2 = −63 dBc, HD3 = −80 dBc at 10 MHz - critical for clean signal reproduction in professional audio and opto-electronics |
| Output Current | ±100 mA sourcing/sinking per channel (LMH6626) - drives 100 Ω loads directly without external buffers |
Pinout & Package
LMH6626MAX is packaged in an 8-pin SOIC (D package), 4.90 mm × 3.91 mm body size, with exposed pad not present. Pin functions are validated per TI SNOSA42G Rev G datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Channel A output - drives external load or next-stage input; capable of ±100 mA drive into 100 Ω |
| 2 | IN A− | Channel A inverting input - connects to feedback network; matched impedance critical for distortion control |
| 3 | IN A+ | Channel A non-inverting input - high-impedance node (6.6 MΩ common-mode); requires guarding in sensitive layouts |
| 4 | V− | Negative supply rail - must be decoupled locally with 0.1 μF ceramic capacitor to ground |
| 5 | N/C | No connection - electrically isolated; no PCB trace or thermal pad required |
| 6 | IN B− | Channel B inverting input - independent of Channel A; crosstalk rejection >75 dB at 1 MHz |
| 7 | OUT B | Channel B output - fully independent output stage; supports simultaneous dual-signal processing |
| 8 | V+ | Positive supply rail - shared supply for both channels; requires low-ESR bulk + local decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input voltage noise | 0.92 nV/√Hz enables detection of microvolt-level signals in ultrasound transducer interfaces |
| Stable for |AV| ≥ 10 | Eliminates need for external compensation in standard gain configurations, reducing BOM count |
| Dual-channel isolation | 75 dB crosstalk rejection at 1 MHz allows independent high-fidelity amplification of two sensor channels |
| Rail-to-rail output swing | ±4.3 V into 100 Ω at ±6 V supplies maximizes dynamic range without clipping in active filter stages |
| Wide supply flexibility | Operates from ±2.5 V to ±6 V or 5–12 V single supply - simplifies integration into mixed-rail systems |
Applications
| Ultrasound Pre-amplifiers | Instrumentation Sense Amplifiers |
|---|---|
Use Scenario: Amplifying weak, high-frequency echo signals (1–15 MHz) from piezoelectric transducers in portable and diagnostic ultrasound systems. IC Role / Device Role / Timing Role: First-stage low-noise voltage amplifier with gain ≥20 and bandwidth >100 MHz. Use Value: 0.92 nV/√Hz input noise and −63 dBc HD2 at 10 MHz preserve image resolution and contrast-to-noise ratio. | Use Scenario: Conditioning low-level bridge sensor outputs (e.g., strain gauges, pressure sensors) in industrial test equipment. IC Role / Device Role / Timing Role: Precision differential-to-single-ended converter with <±0.7 mV offset and <±0.2 μV/°C drift. Use Value: Enables 16-bit+ effective resolution without calibration over −40°C to +125°C ambient. |
| Magnetic Tape & Disk Pre-amps | Professional Audio Systems |
Use Scenario: Recovering high-frequency analog playback signals from magnetic storage media with minimal added noise. IC Role / Device Role / Timing Role: Wideband, low-distortion gain block in analog playback channel before ADC sampling. Use Value: 1.3 GHz GBW and −80 dBc HD3 at 10 MHz ensure faithful reproduction of harmonically rich analog waveforms. | Use Scenario: Line-level signal distribution and buffering in studio-grade mixing consoles and digital audio workstations. IC Role / Device Role / Timing Role: Dual-channel unity-gain buffer with high slew rate and low THD+N. Use Value: 350 V/μs slew rate prevents slew-induced distortion on transient-rich program material (e.g., drum transients). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ultra-low-noise op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6626MMX | VSSOP-8 package (3.0 mm × 3.0 mm); identical electrical specs; higher thermal resistance (RθJA = 235°C/W vs. 166°C/W) | Better suited for space-constrained PCBs where thermal management is handled externally | Select LMH6626MMX when board area is critical and ambient temperature remains ≤85°C |
| OPA211AIDR | Lower noise (1.1 nV/√Hz), lower GBW (45 MHz), higher precision (±25 μV VOS), but not optimized for >100 MHz operation | Targeted at DC-critical, medium-bandwidth instrumentation-not RF or ultrasound front-ends | Choose OPA211AIDR only for sub-50 MHz, ultra-precision DC applications requiring lower offset drift |
Compared with LMH6626MMX, LMH6626MAX offers superior thermal performance in SOIC-8 and proven layout compatibility with legacy designs; versus OPA211AIDR, it delivers 28× higher gain bandwidth at the cost of slightly higher DC precision - making LMH6626MAX the only viable option for >100 MHz signal chain stages.
Availability
LMH6626MAX is available at Aetrix Electronics and suitable for ultrasound pre-amplifiers, instrumentation sense amplifiers, and professional audio systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LMH6626MAX 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 specializing in analog and embedded processing technologies, with leadership in high-performance op-amps, data converters, and power management ICs.
The LMH6626MAX belongs to TI's LMH high-speed amplifier product line, engineered specifically for wideband, low-noise signal acquisition in medical imaging, test equipment, and communications infrastructure.
FAQ
What is the maximum operating supply voltage for LMH6626MAX?
The LMH6626MAX supports dual-supply operation from ±2.5 V to ±6 V (12 V total) and single-supply operation from 5 V to 12 V. Absolute maximum supply voltage is ±6.3 V or 13.2 V total, beyond which permanent damage may occur per TI SNOSA42G Section 6.1.
Is LMH6626MAX stable in unity-gain configuration?
No - the LMH6626MAX is specified and characterized for stable operation only at closed-loop gains |AV| ≥ 10. Unity-gain use risks oscillation due to insufficient phase margin; TI explicitly recommends minimum gain of 10 in datasheet Section 1 and Features list.
Does LMH6626MAX include ESD protection?
Yes - LMH6626MAX features integrated ESD protection rated at ±2000 V HBM (Human Body Model) and ±200 V MM (Machine Model), as confirmed in Section 6.2 of the TI SNOSA42G datasheet. This meets standard manufacturing ESD control requirements.
What is the output current capability of LMH6626MAX per channel?
LMH6626MAX delivers ±100 mA sourcing and sinking current per channel into 100 Ω loads at ±6 V supplies (Section 6.5), and ±80 mA at ±4.3 V output swing. Short-circuit current is rated up to ±156 mA (momentary, 1.5 ms duration).
Can LMH6626MAX operate from a single 5-V supply?
Yes - LMH6626MAX is fully specified for single-supply operation from 5 V to 12 V (Section 6.3). Input common-mode range extends to within 0.5 V of V− and 1.75 V below V+, and output swings to within ~0.8 V of each rail under load, enabling functional use in 5-V systems with appropriate biasing.
LMH6626MAX 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:
- Obsolete
- 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 FAQ
1.How can I place an order for LMH6626MAX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6626MAX 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 reliable?
The price and inventory of LMH6626MAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6626MAX is usually 5 days.
3.What payment methods are accepted for LMH6626MAX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6626MAX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6626MAX?
LMH6626MAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6626MAX 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?
For technical support, including LMH6626MAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6626MAX requirements.
6.How does Aetrix verify that LMH6626MAX is sourced from the original manufacturer or authorized distributors?
All LMH6626MAX 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 meets industry standards.
7.What is the process for return or replacement of LMH6626MAX?
All LMH6626MAX units undergo pre-shipment inspection (PSI). If there is an issue with LMH6626MAX, 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 part is unused and in its original packaging.
Return procedure for LMH6626MAX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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