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Texas Instruments LMH6624 MDC
- Part No.:
- LMH6624 MDC
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- Die
- Datasheet:
-
LMH6624 MDC.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT DIESALE
- Quantity:
- Payment:
- Shipping:
Inventory:2,052
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Product details
Overview
LMH6624 MDC from Texas Instruments is a single ultra-low-noise wideband voltage-feedback operational amplifier optimized for high-fidelity signal conditioning in demanding analog front-ends. It delivers 1.5 GHz gain bandwidth, 0.92 nV/√Hz input voltage noise, and 350 V/μs slew rate at ±6 V supply, enabling precision low-noise amplification in ultrasound preamplifiers and instrumentation sense circuits.
For engineers reviewing the LMH6624 MDC datasheet, LMH6624 MDC pinout, LMH6624 MDC application, or LMH6624 MDC equivalent, key selection criteria include closed-loop stability at |AV| ≥ 10, input-referred distortion performance (–63 dBc HD2 / –80 dBc HD3 at 10 MHz), and dual-package availability (SOT-23-5 and SOIC-8) with validated thermal metrics (RθJA = 265°C/W and 166°C/W respectively).
Technical Context
The LMH6624 MDC employs a traditional voltage-feedback topology with balanced differential inputs, delivering 81 dB open-loop gain, 95 dB CMRR, and 88 dB PSRR - enabling precise DC-coupled gain stages without significant common-mode or supply-induced error. Its architecture supports both inverting and non-inverting configurations with stable operation at closed-loop gains ≥10.
It features intrinsic low-noise design (0.92 nV/√Hz voltage noise, 2.3 pA/√Hz current noise) and high-speed dynamic performance: 95 MHz –3-dB bandwidth at ±6 V, 3.7 ns rise/fall time, and 18 ns 0.1% settling time. Input offset voltage is specified at ±0.5 mV (±0.7 mV over temperature), with ±0.2 μV/°C drift - supporting precision DC accuracy in wideband applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 1.5 GHz - enables stable closed-loop gain ≥10 up to ~150 MHz, suitable for wideband active filters and RF signal chains. |
| Input Voltage Noise | 0.92 nV/√Hz at 1 MHz - sets fundamental SNR floor for low-amplitude sensor signals (e.g., piezoelectric transducers in ultrasound). |
| Slew Rate | 350 V/μs at AV = +20 (±6 V) - supports full-scale fast transient response without slewing distortion in 10–20 MHz pulse applications. |
| Harmonic Distortion | –63 dBc HD2 / –80 dBc HD3 at f = 10 MHz, RL = 100 Ω - ensures minimal spectral contamination in high-fidelity audio and medical imaging signal paths. |
| Supply Voltage Range | ±2.25 V to ±6.3 V (4.5 V to 12.6 V total) - compatible with both low-voltage portable systems and high-swing industrial rails. |
| Input Offset Voltage | ±0.5 mV (max) at 25°C, ±0.7 mV (max) over –40°C to +125°C - enables accurate DC-coupled amplification without frequent nulling. |
| Common-Mode Rejection | 90–95 dB over –4.5 V to +5.25 V input range - maintains signal integrity in noisy mixed-signal environments with ground shifts. |
Pinout & Package
LMH6624 MDC is available in two industry-standard packages: 5-pin SOT-23 (2.90 mm × 1.60 mm) and 8-pin SOIC (4.90 mm × 3.91 mm). Both packages support surface-mount assembly and are rated for operation from –40°C to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | Accepts +2.25 V to +6.3 V; requires local 0.1 µF ceramic bypass to minimize high-frequency supply impedance. |
| V− | Negative supply input | Accepts –2.25 V to –6.3 V; must be decoupled independently from V+ to prevent ground bounce coupling. |
| +IN | Non-inverting input | High-impedance node (6.6 MΩ common-mode); requires ≤25 Ω series resistor when driven from 0-Ω source to suppress bias current errors. |
| –IN | Inverting input | Differential input node; matched to +IN for optimal CMRR; external feedback network defines closed-loop gain and bandwidth. |
| OUT | Amplifier output | Capable of sourcing/sinking 100 mA; drives 100 Ω loads to ±4.4 V swing at ±6 V supply; isolation resistor recommended for capacitive loads >100 pF. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input voltage noise | 0.92 nV/√Hz enables detection of sub-microvolt signals in magnetic tape heads and ultrasound transducers without added noise penalty. |
| Bias current cancellation support | Explicit Rf||Rg = Rseq design rule minimizes offset drift in non-inverting configurations, preserving DC accuracy at high gains. |
| Stable for |AV| ≥ 10 | Eliminates need for external compensation in most gain ≥10 applications, reducing BOM count and layout complexity. |
| High slew rate with low distortion | 400 V/μs at AV = +10 and –80 dBc HD3 at 10 MHz allow clean amplification of fast-rising pulses in medical diagnostics and opto-electronics. |
| Wide supply range & temp rating | Operates from ±2.25 V to ±6.3 V across –40°C to +125°C, supporting military-grade instrumentation and automotive under-hood sensing. |
Applications
| Ultrasound Preamplifier | Instrumentation Sense Amplifier |
|---|---|
Use Scenario: Amplifies weak, high-frequency echo signals (1–15 MHz) from piezoelectric transducers in portable and cart-based diagnostic systems. IC Role / Device Role / Timing Role: First-stage low-noise voltage amplifier in analog front-end, directly coupled to transducer array with minimal added noise. Use Value: 0.92 nV/√Hz input noise preserves SNR of microvolt-level echoes; 1.5 GHz GBW supports wideband beamforming without phase distortion. |
Use Scenario: Measures low-level DC-coupled sensor outputs (e.g., strain gauges, RTDs, current shunts) in test equipment and process controllers. IC Role / Device Role / Timing Role: Precision gain stage with low offset drift and high CMRR, rejecting power-line interference and ground loop noise. Use Value: ±0.2 μV/°C offset drift and 95 dB CMRR ensure <1 µV error over 100°C ambient range; stable AV ≥10 eliminates external compensation. |
| Wideband Active Filter | Professional Audio System |
Use Scenario: Implements high-order Sallen-Key and multiple-feedback filters in RF test gear and communications receivers requiring flat group delay. IC Role / Device Role / Timing Role: High-speed op-amp core in active filter topologies, maintaining linearity and phase fidelity up to 100 MHz. Use Value: 95 MHz –3-dB BW and –63 dBc HD2 at 10 MHz enable clean filtering of multi-MHz signals without harmonic generation or passband ripple. |
Use Scenario: Used in microphone preamps, line drivers, and digital-to-analog reconstruction filters in studio-grade audio interfaces and broadcast mixers. IC Role / Device Role / Timing Role: Low-noise, high-slew buffer and gain stage handling 20 Hz–20 kHz full-bandwidth signals with ultra-low THD+N. Use Value: –80 dBc HD3 at 10 MHz translates to <0.01% THD at 20 kHz; 350 V/μs slew rate prevents slew-induced distortion on transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-noise wideband op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6629MDE | Higher GBW (3.8 GHz), lower voltage noise (0.74 nV/√Hz), but higher supply current (22 mA vs. 16 mA) and narrower supply range (±2.5 V to ±5.5 V). | Preferred for >100 MHz signal chains where noise and speed outweigh power constraints; not suitable for ±6 V systems. | Select LMH6629MDE only when system requires >2× bandwidth and can accommodate tighter supply limits and higher quiescent power. |
| OPA847ID | Lower voltage noise (0.85 nV/√Hz), higher slew rate (950 V/μs), but unstable below AV = 12 and no guaranteed operation above +85°C. | Used in high-speed oscilloscope front-ends and laser diode drivers; unsuitable for extended-temperature industrial or MIL-spec designs. | Choose OPA847ID for lab-grade high-speed test equipment where temperature range is limited and gain ≥12 is acceptable. |
Compared with LMH6624 MDC, LMH6629MDE offers superior speed/noise trade-off at higher power cost and reduced voltage margin, while OPA847ID provides extreme slew performance but sacrifices temperature robustness and minimum gain stability - making LMH6624 MDC the balanced choice for ruggedized wideband instrumentation.
Availability
LMH6624 MDC is available at Aetrix Electronics and suitable for ultrasound preamplifiers, instrumentation sense amplifiers, and wideband active filters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMH6624 MDC 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-performance op-amps and signal-chain solutions.
The LMH6624 MDC belongs to TI's high-speed precision op-amp product line, engineered specifically for applications demanding simultaneous ultra-low noise, wide bandwidth, and DC accuracy - such as medical imaging, test & measurement, and professional audio.
FAQ
What is the minimum stable closed-loop gain for LMH6624 MDC?
The LMH6624 MDC is specified as stable for closed-loop gains |AV| ≥ 10 in both inverting and non-inverting configurations. This eliminates the need for external compensation networks in most high-gain wideband applications. Gain settings below 10 may exhibit peaking or instability depending on layout and load conditions - always verify stability via small-signal AC analysis and pulse testing for the target gain and load.
Does LMH6624 MDC support single-supply operation?
Yes, LMH6624 MDC supports true single-supply operation from 4.5 V to 12.6 V (VCC to GND), with input common-mode range extending to within 0.5 V of the negative rail and output swing to within 1.0 V of each rail under 100 Ω load. For single-supply use, bias the +IN pin to mid-rail using a low-noise reference or resistor divider, and ensure proper decoupling on VCC.
What package options are available for LMH6624 MDC?
LMH6624 MDC is offered in two standard packages: 5-pin SOT-23 (DBV, 2.90 mm × 1.60 mm) and 8-pin SOIC (D, 4.90 mm × 3.91 mm). Both are RoHS-compliant, lead-free, and qualified for operation from –40°C to +125°C. The SOT-23 variant is optimized for space-constrained PCBs; the SOIC version provides better thermal dissipation (RθJA = 166°C/W vs. 265°C/W) for high-output-power applications.
How does LMH6624 MDC handle capacitive loads?
LMH6624 MDC can drive moderate capacitive loads (<100 pF) directly, but larger loads require isolation. For loads >100 pF, insert a 10–50 Ω series resistor between OUT and the capacitor to isolate the amplifier's output stage and maintain phase margin. This technique is validated in TI's application notes for LMH6624 MDC and preserves stability without degrading bandwidth significantly.
Is LMH6624 MDC pin-compatible with CLC425?
Yes - LMH6624 MDC is explicitly designed as an improved replacement for the CLC425, sharing identical pinouts in both SOIC-8 and SOT-23-5 packages. Key improvements include 3× lower input voltage noise (0.92 nV/√Hz vs. 2.7 nV/√Hz), 2× higher slew rate (350 V/μs vs. 175 V/μs), and enhanced distortion performance (–80 dBc HD3 vs. –65 dBc), with no PCB layout changes required for drop-in replacement.
LMH6624 MDC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- 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
- Current - Output / Channel:
- 100 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:
- Diesale
LMH6624 MDC FAQ
1.How can I place an order for LMH6624 MDC through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6624 MDC 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 LMH6624 MDC reliable?
The price and inventory of LMH6624 MDC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6624 MDC is usually 5 days.
3.What payment methods are accepted for LMH6624 MDC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6624 MDC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6624 MDC?
LMH6624 MDC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6624 MDC 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 LMH6624 MDC?
For technical support, including LMH6624 MDC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6624 MDC requirements.
6.How does Aetrix verify that LMH6624 MDC is sourced from the original manufacturer or authorized distributors?
All LMH6624 MDC 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 LMH6624 MDC meets industry standards.
7.What is the process for return or replacement of LMH6624 MDC?
All LMH6624 MDC units undergo pre-shipment inspection (PSI). If there is an issue with LMH6624 MDC, 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 LMH6624 MDC part is unused and in its original packaging.
Return procedure for LMH6624 MDC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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